Harley cv carb voes. I was lucky it was serviceable.
Harley cv carb voes Now, I cannot remember where the vacuums go. Got it used so not sure if the cams have been changed too. Oct 19, 2014 · The stock petcock was vac. Most parts are backward compatible for all 1989-2006 Big Twin and Sportster models, with exception to 1989-1991 models that used a different float and bowl assembly. I am currently building my 2005 Harley Dyna FXD. This brings us to the subject of upgrading these older Harley "Soup Cans" to the newer CV style carb. Being a CV carb hey run great off road, much less effected by elevation change, and keep an more constant AFR 3) It would have a great vacuum signal and low end torque and make up some of the difference running 31" tires will 3. Jun 1, 2004 · Harley's Keihin CV (constant velocity) carburetor is based on the basic Amal slide carb design from the early post-World War I era. will they hold a vacuum if in good operating condition? mine is broke and won't hold any vacuum. The CV carb is more than sufficient up to 100 HP and there's no way you're going to make an 80" hit 100 hp (at least not without some serious amount of money and work). I don’t really know what I am doing. On the left side of the bike, a vacuum hose comes up from the stock petcock and connects to a T just above the VOES, with a vacuum hose coming up from the VOES to the bottom of the T, and a vacuum hose from the other side of the T to the back of the carburetor (the arrow points to that last hose). If the AFR screw plug hasn't been drilled out, do that even if you're not changing it, there's a little rubber o-ring in there a lot of people forget, and carb cleaner eats rubber. Soft parts of carb are clean and do not appear ripped or Aug 3, 2021 · Reassembling your carburetor in great detail after cleaning or rebuilding. CV fanboys are going to hate this, but the best advice is to toss the cv and get a S&S or a mikuni on there. Harley CV carburetors are made up of several components, each of which plays a crucial role in the carburetor’s operation. I kept trying to tune it, but I couldn’t get it right until I got a new carb boot. This 100% brand-new carburetor is crafted with precision and excellence, ensuring that all parts are thoroughly tested and quality controlled. I will turn the pet cock on, and wait a few minutes and see. This can occur on any model, any carburetor, but seems to happen most often with the stock CV Keihin carburetors used on the newer (90 up) Big Twins and Sportster models. I wondered if that carb, if made to fit my XR650L (or any other large-bore thumper), would provide the smooth performance of the stock CV carb with the off-idle throttle response of the popular flat slide-type pumper carbs. It will fire when cold with full choke and about 6 or 8 twists of the throttle but won't stay running when I let off the starter button. I will be taking the carb off again tomorrow and I will check for the ring around the Viton tip where the needle seats in the carb. Is there any material difference between the two carbs? Learn the secret to installing Harley CV carb needle jets with this easy-to-follow tutorial. I did a lot of testing and tuned my timing curve to where my bike runs very well and could not see any advantage using a VOES. Jan 4, 2025 · There is also a CV40 making the rounds that is distributed by a Florida company that looks identical but not all the specs match up. Engineering & design. cv-carb. See if there is a hose on your petcock. The Vacuum Operated Electric Switch (V. Visit CV Performance to get your American made carburetor parts for Harley motorcycles from CV Performance. My 97 XL1200C has the VOES tube going from the old carb into the Y-splitter then to the switch. If you've got a problem with the float sticking, then that's most probably caused by trash in the fuel line or degrading fuel line, etc. Jun 20, 2019 · RE: Basic CV Carburetor Tuning Guide Wednesday, April 04, 2007 6:43 PM (permalink) The importance of proper float height. com. Discontinued Blowout Sale - Out of StockWhile supplies last on this Closeout Item - ONLY $12. Feb 4, 2022 · VOES for heavier bikes are set to switch at a different level of vacuum than lighter bikes. In this video, Fix My Hog Expert Jul 22, 2007 · The CV made for Harley is the same basic carb body casting used to make the CV for Kawasaki. the VOES nilet on the intake maknifold was blacked off. ) was standard equipment on all Evolution® engines and works in conjunction with most all late model electronic ignitions, both factory and aftermarket. CV carb, ev 27 cam, evo heads with stock valves, ported/polished combustiion chamber and 100 thou off the heads, ultima ignition, single fire system. operated, and had a line going to the manifold or a "T". The "adicle" (Advertisement that mimics an article) started by asking if your stock CV carburetor on your Harley is worn out or in need of a major rebuild, with the intention of selling their brand of aftermarket carburetor as a replacement. 2. Install the Mikuni spring and plunger onto the Harley choke cable. After a couple times doing this it will start and run. Mar 17, 2011 · The VOES is a vaccum retarder to prevent pinging. Sep 5, 2017 · There is no real way to kill exhaust pop from a properly sized and jetted cv carb. 4 days ago · For a non-dual plugged shovelhead, the VOES will improve idle and MPG performance. You will also detect a noticeable decrease in engine speed when the hose is removed. Previous topic - Next topic. Includes two manifold seals, one spigot seals, a choke bracket to mount on top of the carburetor cover, 1. It is a constant velocity (CV) carburetor, which means that it automatically adjusts the fuel-air mixture based on engine speed and throttle position, providing smooth and consistent performance. I unhooked the VOES to allow better access to change out the manifold. This is the first time I’ve ever done any sort of carb work, and I don’t want to have three carbs apart right now. Accelerator Pump Adjustment; 11 7. Dec 27, 2010 · The VOES retards the timing significantly when the vacuum is low. Mar 8, 2015 · Swapped out the Harley Carb for an S&S Super E. Nov 20, 2020 · As to the carburetor, the Harley/Keihin CV carb, the accelerator pump doesn't just run or go. So, you do not NEED to replace the Keihin CV40 carb on your EVO unless you want to. How to replace the early 1981-89 Harley Keihin with a newer CV40 carburetor. Apr 23, 2023 · On the CV carb, float level has some wiggle room. I rebuilt the carb and I took the slow jet out I replace it with one up from stock which is 48. This forum is awesome! First I picked up a used CV carb off Ebay $50 - not bad. voes nipple plug on cv carb June 06, 2010, 09:02:10 AM I can't keep a plug on it, this lasted 1000 miles and I used a rubber vacume line plug with rtv and let it dry for 2 days. Jul 2, 2024 · Besides the fact that sometimes it would make a pop through the carb I was told you just keep running it and see if things would kind of work itself out, so I decided to take the carb apart. If it does, you'll have to adjust or modify your plugging procedure to make sure the VOES stays operational. Jul 31, 2021 · 1 What is a Harley CV Carburetor? 2 How Does Harley CV Carburetor work? 3 How to Adjust the Idle on a Harley CV carburetor; 4 Harley Davidson CV Carburetor Troubleshooting; 5 1. Nov 2, 2022 · There is only one fuel hose to carburetor an overboard fuel drain hose if it is an early carburetor and a vacuum hose that goes from the intake manifold to the voes switch. Spark plugs are black from too much enricher I guess. Moderator. I told him that the next time around, he should just swap in a new carb without the Harley marks and labeling. Jul 13, 2021 · I checked accel pump upon first install carb had 170 main same bog down still studying the voes advance setup, so if 180 not good, current main jet, 170 same deal, not sure I have smaller jet, straight up carb jetting is not my area of expertise. Sep 18, 2021 · We took the new carburetor and stripped every part off. You know, one of those that gets you while low-speed turning. Discussion about Carbs, Carb choices, Tuning Carbs, Modifications and Carb fuel systems. 5 pounds of suction. Now I no longer need to Sep 22, 2021 · Vacuum hose connects to the carb port, the back of the petcock and the VOES. I have cleaned carb, jets are clean, enrichment valve and linkage is clean and moves freely. First, I'd like to thank Vindex1963 (Tom) for his advice and numerous emails which allowed me to complete this project. Screaming Eagle ignition,V&H Short May 23, 2009 · Stock CV carb and Harley ignition, open air filter and 2 into 1 pipe with HP power baffle. 41 Doss Holder, Needle Jet For CV Carburetor (ARM460045) Jul 16, 2021 · Step by step process to show you how to clean your carburetor to make sure that your bike runs perfectly This video is to run you through the process of clea Cycle Craft carburetor rebuild kits and components are high quaintly replacements for OEM components. May 1, 2024 · CV Performance | Harley Fuel Elbow Replacement (cv-performance. Harley Davidson motorcycles prior to 1989 used a standard butterfly carburetor and are excellent candidates for upgrading to Jul 23, 2020 · So I converted from the stock butterfly carb to an HD CV carb on my 1989 Heritage Softail. 6) Over-drilled slide port. Simply rejet the existing CV carb as needed. You can get jet kits for $20-100 or just buy individual jets. 1996 FXDS-CONV S&S E. The CV was designed for OEMs & to be able to meet the emissions requirements of the day which meant controlling the fuel curve. Air Fuel Mixture Screw for CV Carb - 20757 Cycle Pro. 56 Part #: Jun 17, 2009 · Remove air cleaner, carburetor, and manifold according to service manual instructions. com) 2021 Indian Roadmaster Limited - 2004 Softail Springer - 1993 Dyna Low Rider - 1983 FLHT 275,000 HOG Miles Apr 15, 2021 · CVP Basic Renewal Kit for 92-06 Harley CV style carburetors. if the cam doesn't need anything special, like different rockers and it is able to use with stock pistons, go for it. jpcycles. Newbie to harley ownership. 5 gears would otherwise lack in. Maybe just run the carb vac. . Feb 10, 2014 · When i bought the bike it had the old carb (Cv i think) and then a s&s super e series Through a friend that never ran very well. Here's what worked for me, on the cheap (which is my religion). VOES is part of the ignition, so changing to any carb other than stock is moot point. After buying a 2000 Dyna Wide Glide a year ago for half price from an unemployed friend who was moving in a hurry, I started to work on the low speed (and dangerous) carb cough. 9 main jet and a . See Additional Information below for fitment. * Not for use on non-Harley models or other Keihin carburetors. fin_676 Experienced Member. I decided to rebuild the carb again and I discovered a leaking float. No trouble Renew your Harley with the Cycle Pro High Performance CV 40mm Carburetor and experience the ultimate in power and performance. Apr 27, 2013 · 94 evo. I have connected the VOES vaccum line which is at the top of the carb installed. It's usually caused by a lean condition. Jet the carb 48/195/oem needle. I also needed to replaced the fuel line, so I got new line and a Golan high-flow petcock for the new carb. 6. Dec 15, 2019 · Plugging the vacuum should be all that's needed. Couldn’t keep her running, no choke needed, and was billowing smoke and leaking fuel out of the air cleaner. Getting a great tune on it will be very hard with drag pipes. As far as I know, all float heights are set with the float just resting upon the needle, or slightly compressing the needle to it's seat. the cv carb didn't Sep 20, 2022 · I've looked and can't seem to find info other than "the super e or cv is the way to go". There is a VOES vacuum tap on the rear of the carb. The VOES adjusts ignition timing from idle to WOT, you wanna keep that function. I've only had it running for about 700 miles now, still working out the bugs. The original set-up with the stock (pre-cv) carb was a vacumm line from the Voes, to a T-clamp that branched to the carb and the hypercharger A/C. For engines with: Larger bore than stock (big-bore) High compression pistons; High performance carburetor; VOES vacuum attached to carb; Tip: Go up one size if attaching a VOES to the intake manifold instead of the carb. For use with 1990-1991* FL/FX Big Twins and 1989-1991 XL models using the early model Harley CV 40 carburetor with 2-piece bowl seals (see photo). Feb 4, 2018 · The red arrow points to the vacuum hose. com) Have you ever seen anything like this? It is the parts book for your bike. Is not sure what it came off of, but he said he knows it’s been modified before is modifiable so I might be able to use that one, or parts off of that one. Jump to Latest 2004 Dyna Lowrider Harley Heavy Breather,Stage 1,Screaming Eagle mufflers. I've connected the fuel line on the lower left of the installed carb. FXR2/3/4's also came stock with p/n 26583-99, a vacuum hose assembly system which was two vacuum hoses connected by a "T" that connected the carb vacuum nipple to both the VOES switch and the vacuum on the petcock. The other hose is the vent from the bottom right front gas tank bung and goes back to the purge valve. Anyway I happen to have a CV carb from a 2003. Aug 17, 2021 · First, skip replacing the carburetor. Is your VOES hooked up (did 91's even have it)? Before spending money on another carb, get familiar with the Mikuni and see if you can get it tuned right. It senses high and low manifold vacuum and signals the ignition to change its advance slope. Jul 10, 2009 · The popular cams that Andrews puts out are no more radical than a triumph bonneville cam in the late 60s, probabley less so. It's been rebuilt and installed. Filter Results. The S&S is about as simple as a carb gets, next to a soup can with a butterfly. CV Performance helps riders like yourself achieve the full performance potential of their Harley and American V-Twin motorcycle with high quality intake products. Nov 25, 2008 · Bought from ebay: stock ignition module, stock coil, stock voes, stock intake manifold, cv carb, Pingle tank conversion kit and petcock. Took the carb off, rebuilt the accelerator pump and float bowl with new gaskets, reinstalled the carb and same Aug 31, 2024 · The jets he said he put in the new carb would be correct for a Keihin CV carb. I have already modified the petcock so the need for vacuum is gone. Apr 23, 2023 · Good day all, I need a little help in reinstalling my CV carb. Now that is said-- I will check it again. We also routinely install the VOES in custom built Harley Davidsons and even our own Kenny Boyce framed Harley FXR's use VOES with a Crane HI4 module. Do some research on here to understand that carb, and you will likely decide to stick with Apr 28, 2011 · Has been getting progressively worse, is almost unrideable now, can get it to start up ok, loses idle, spits thru carb and stalls out. But go check out the website and you'll learn all you need to know about tuning the Harley CV Jan 19, 2010 · All Harley and metric riders are welcome. Nobody would know the difference. This OP needs to cough up some more info on the bike and what carb he put on it. I’ve ran cv carbs in the past and prefer them on ironheads, but the Super E is a really simple carb to get dialed in if you can afford one. Underneath your gas tanks, is a T, it runs from your carb to the VOES and to the petcock, if you buy a petcock that doesn't draw vacuum, you just pull the T and use a bit of the hose to go from the carb directly to the VOES And voes stands for Vacuum Operated Electrical Switch, so saying VOES switch is redundant. On top of that is the MAP sensor with a 2 pin connector. Fast forward to a month or so ago, I purchased the crudiest cv carb on ebay. Natural finish 40mm CV carburetor is for 1340 models and is an accurate reproduction of the Venerable Keihin CV carburetor. I always assumed that the ethanol in the fuel was minor pitting the float valve sealing surface. I've got the Keihin butterfly carb "27FA" stamped with screaming eagle stamped on a few places, on the original motor. Nov 16, 2018 · CV 40mm Carburetor With Accelerator Pump For Harley-Davidson 40mm CV carburetor is for Big Twin Evolution, Twin Cam and Sportster models and is an accurate reproduction of the OEM Keihin CV 40 mm carburetor The stock main jet is #185 and the stock slow jet is #42 Must order choke cable assembly, manifold, cable set (push-pull) and air cleaner Sep 27, 2015 · Sorry. It was a perfect sized pin hole on the back of line just up from the carb. The problem I have now is that it idles fine, but when I give it gas at part throttle, about 2000-3000RPM's it stumbles. Intake manifold, behind the carb. One time I put a carb back on and the boot didn’t seal right causing an air leak. I figured to upload the animation of the inner-workings of the CV carburetor explenation made super quick and simple to understand after the great success of Installation instructions, tuning tips, videos, and how-to guides for your Harley CV carburetor and other CV Performance brand parts. Apr 20, 2010 · You need a CV intake manifold, mounting flanges (2) and the rubber gaskets for the intake (2) and the one where the carb slides onto the intake. The VOES you got will still work, it just may not switch the ignition to the advanced curve at the same time as the right one for your bike. Jul 19, 2024 · Troubleshooting a Harley Davidson CV carburetor often involves checking for clogs and ensuring proper float bowl level. Mar 6, 2010 · *Twin Cam CV Carb Rejet Suggestions - Harley Davidson Community TQ . It has pro pipe and SE air cleaner. This needs to be replaced. Adjust Idle Mixture; 8 4. VOES has been checked and get and ohm reading @ 3. 3. Properly tuned, a CV carburetor is capable of supporting 80+ horse power in modified engines. Then stripped the carb on his bike, cleaned the carb body, and installed all the new parts we took off the new carburetor. May 6, 2021 · He has another CV laying around. 575 inch). Look at part #8. I run a S&S "E" on one of bikes. Under high load, the switch signals the ignition module to Harley-Davidson FXRT Build (Part 22 ) VOES System ExplainedBack when gas restrictions were all the rage. You'll also need a carb retaining bracket, since your current carb bolts to the intake with 2 bolts and the CV carb is held on by an aircleaner backing plate, bolted to the head, or a separate bracket. The articles and guides below are provided to assist with various products and common carburetor troubleshooting. But I would ask WHY you want to? The CV40 is a great little carb! Very easy to understand and work on. The upgrade is quite straight forward and for the majority of models only requires a Flange Adapter be fitted between the carb and the manifold. So much so that the timing mark will not be visible with a strobe light when the vacuum hose is pulled off the carburetor. The kit contains the most commonly replaced quality seals needed to renew your Harley CV carburetor. Aug 5, 2004 · Just finished installing a CV carb on my 1980 Low Rider and thought I'd share the experience with you guys. Everything is home made and DIY as usual! Lack of top speed and acceleration - problem solving and correction May 11, 2013 · need some input I am getting a cv carb for my 80 sportster Monday but I need to pick between a pre epa ??? & a epa one ??? or a 93 or 96 also I have no voes on my 80 so can I just plug the vacuum port off at the carb thx noel The Cv 40 carb is specifically designed for Harley-Davidson motorcycles and is commonly found in their models. Disclaimer : Don't believe anything I say unless you are absolutely sure that I know what I'm talking about . E. Some of the key components include the slide, needle, jet needle, main jet, pilot jet, and choke. I can't remember if the same hole on the carb goes to the VOES or not. Step by step CV carburetor upgrade for older Harley Davidson motorcycles. Then another friend who works on harleys for A living had a look and said i need to put a voes Switch on and he did it for me. Fitment: Fits 90-99 carbureted Evo 1340 equipped models 99-06 carbureted Twin Cam equipped models Nov 30, 2021 · Buy Motorcarb CV 40MM Carburetor & Choke Cable Fit for Harley Davidson HD Sportster 883 1200 Super Glide Softail Carb 27490-04 (Black, with Spark Plug + Fuel Filter + Jets): Carburetors - Amazon. Only for H-D CV40 carburetors 1992-2006. That can simply be capped to prevent leakage. May 13, 2014 · SOURCE: finding a 1983 harley carb with VOES tube The original carb on a 1983 XLH was a Kehien "butterfly" type carb as opposed to the current Kehien "CV" type carb. The VOES will be inop then. Common issues include erratic idling and poor throttle response. In performance work it leaves us with enough room to be useful, while that fuel control works to our benefit. Started out clean. Harley Davidson had to figure a way to beat the c Mar 27, 2012 · Once the carb body and bowl are cleaned and polished, and the carb throat is polished, I'm ready to reassemble. Feb 6, 2014 · Decided to go back to the stock petcock, which uses the same carb vacuum nipple as the VOES switch-- which I did not know at the time . Jun 27, 2024 · Components of Harley CV Carb. hose to the VOES and plug the other end. We experimented with installing a VOES in a 1983 FX and found we have improved throttle response and better mileage. If not, that is probably why you have the plugged line. WILL NOT fit the non-stock race carburetors CV44 or CV51, pre-1992 models, nor any aftermarket carburetor not made by Keihin for Harley-Davidson for 92-06 model years. it isn't going to mess the engine up, it will most Sep 8, 2013 · SOURCE: finding a 1983 harley carb with VOES tube The original carb on a 1983 XLH was a Kehien "butterfly" type carb as opposed to the current Kehien "CV" type carb. Apr 28, 2010 · With the bike off, the gas will still flow to the carb. Jul 22, 2009 · I have 94 evo ultra. I put a 45 pilot jet in and it ran too lean. Imported item by Cycle Pro*. Before it came to this, it coughed when I gave it gas. Remove the Mikuni spring and plunger from the Mikuni carburetor. Harley Davidson motorcycles prior to 1989 used a standard butterfly carburetor and are excellent candidates for upgrading to the newer CV carburetor. In this video, I show you how to disassemble your c Rebuild kit for Harley CV style carburetors. The quick throttle response the HSR gives can be done with the our stock carb by modifying the CV slide. Oct 12, 2024 · Just clean it, new gaskets, new float needle. Carb Coughing; 12 8 Jan 6, 2019 · The CV-40 stock carb is good for 80 HP if you do the right mods. Remove the choke cable from the stock carburetor. The version intended for the Kaw does not have a pumper float bowl, and it has a coasting enricher behind the butterfly to help compensate the frequent Others work very well having digital advances and provisions for a VOES switch. Staff member. After reading a bunch of threads, I would like to keep the VOES. Harley-Davidson® CV40 Carburetor Assembly: Harley CV40 2004-2006 model shown. Keihin CV carbs are easy to tune, easy to work on, make just as much power as an S&S, and don`t have any dead spots. In the case of this carb, the fuel inlet was plastic. 3 %âãÏÓ 28 0 obj > endobj 15 0 obj > endobj 72 0 obj >stream 2015-10-16T14:23:51-05:00 2015-10-16T14:23:51-05:00 2015-10-16T14:23:51-05:00 application/pdf This is the second video in the series of my Dyna build. If vehicle is equipped with electronic ignition and a map sensor, install map sensor to performance intake manifold. There are 2 open lines other than the one that connects to the VOES. Shop carburetor parts : https://www. 4) Great atmozation of the Buy all your Harley Davidson parts, motorcycle parts, Harley Davidson motorcycle parts and Harley Davidson OEM Parts 27026-92A - 26277-80 SE STREET 44MM CV CARB Mar 4, 2023 · My Evo with a CV is really hard starting. CV CARB VACUUM HOSE NIPPLE. Contributor. Your carb is a Keihn CV (constant velocity), a good carb for all around application. I put a 48 pilot jet in and it was too rich I have a 46 in there right now and it is screwed out 3 turns, but it seems to blurb/ pop at idle. Check to see that it is not dripping by touching the end of that line. Should I be using this one now? Hey guys, my CV seized and I went out and got a Miku HSR42 to put on while I fix the old carb. This will apply to most Harley carbureted bikes from EVO up. Tank vent is clear. These are ground so the engine works the way it was designed to work, not the way the EPA wants it to. I went to check timing and found the plate is already advanced as far as the slots will let it. Exhaust leaks; 9 5. com FREE DELIVERY possible on eligible purchases Jan 23, 2002 · 1. Part #57. What will happen if the VOES sits open like it is? Can it be ridden until i can get a new one? I don't know if it matters but it isn't completely stock. 95Alternate part, use our CVP Basic Renewal Kit or Premium CV Carburetor Rebuild Kit We have a limited supply of these import style kit from a dealer liquidation - As-Is Closeout Kit is supplied as an OEM parts-only kit and may 2 days ago · Pretty straightforward swapCV carb w/ manifold, VOES, Pingel adapter kit & petcock, Daytona Twin Tech ignition module, which wires up same as Harley Ignition Harness P/N 32435-97 (carbed vehicles only ) according to the Ignition Harness & Engine Management Circuitry schematics in my 1998 HD service manual. I was lucky it was serviceable. Nov 24, 2022 · After installing the stock needle and reinstalling the carb, when firing up the bike she flooded like nobody’s business. The carburetor on my 1997 Heritage Softail is unuseable (don't ask why, it is embarrassing ). Feb 18, 2009 · Remove air cleaner, carburetor, and manifold according to service manual instructions. Harley-Davidson Carburetor - Parts. Tuning Issues; 7 3. Doesn't take any super expensive parts. Slide diaphragms for the Harley CV carb slide are not sold separately, so the only fix is to replace the Harley vacuum slide. Mar 9, 2005 · Because the rear of the carb is so irregular, I also used red locktite for a sealant and then I gently pressed the flange onto the rear of the carb. I've connected the drain line at the bottom of the carb installed. Find Bar & Shield CV Carburetor Top Cover CV Carburetor Modifying the CV carb Tuning a CV carb Camshafts Selecting a cam Install a TC 88/95 cam Install a Big Twin cam Install Sportster cams Camshaft Specifications Twin Cam EVO Shovel XL Exhaust Systems EVO Exhaust Testing TC Exhaust Testing Khrome Werks AR100 test Making Drag Pipes Work: SHOP TALK Shop Manual Carburetor Carburetor Jan 6, 2004 · One of the most common problems that customers complain about is the spit-cough-pop from the carburetor as a Harley goes from idle to ¼ throttle. I took my VOES off my shovel when I went to dual plugs and installed a PowerArc ignition, which is a multi-spark very accurate ignition. This precision instrument contributes significantly to Harley Davidson bikes’ performance by regulating engine power and responsiveness. Sizes #42, 44, 45, 46, 48, and 50. Dec 31, 2023 · Keihin CV carbs came out for the 1988 Sportster and did not have an accelerator pump. S. %PDF-1. making certain to align the holes vertically so that the CV would sit up straight. A stock bike 1340cc ( 80 CID) can develop up to 64 horse power with a well tuned and modified CV carburetor. Apr 3, 2022 · Good morning all , I have a CV original carb that is running rich , I have a 185 and a 45 slow jet , i installed from a thunderslide kit , to make a long story short it does not run good at all with the air mixture screw in ( really rich) , or with the vacuum attached , runs almost perfect without the two , I have Vance and Hines two in one big radius with a hyper charger air cleaner , new A Harley CV carburetor by far outperforms it's butterfly style predecessors, namely the Keihin, Zenith, and Bendix. I don't even use calipers or anything, I just eyeball the seam on the two halves of the float and look for it to be parallel with the base of the carb body and that seems exactly perfect, that puts it right about the middle of the float adjustment range. CV Performance CV Carburetor Float Bowl Assembly For Harley Davidson 1992-2006 Models With Stock Keihin Constant Vacuum Carburetor (ARM663459) out of stock $81. com/motorcycle-air-intake-and-fuel-systems?utm_source=youtube&utm_medium=description&utm_campaign=The_Anatomy_of I haven’t worked on a Harley carb, but I did work on old xs650s. I appreciate the assistance! Apr 23, 2014 · I get high 40's mpg (Dyna with windshield), no flat spots, stumbles or backfires, starts easy and idles great. Jun 25, 2007 · What is the Vacuum Operated Electrical Switch (VOES)? What does it do and why is it there? All Harley Davidson motorcycle carbureted models since the 1984 model year have used the VOES to improve throttle response, increase MPG, and meet EPA requirements for emissions. May 25, 2015 · have a 1999 fatboy with evo and a s&s carb. Feb 29, 2024 · The Harley Davidson CV (Constant Velocity) carburetor is a pivotal component in a motorcycle’s engine, ensuring that the correct mix of air and fuel is delivered for smooth operation. Make sure the older VOES is not leaking vacuum as that is a common problem. The slide, as mentioned earlier, controls the amount of air entering the carburetor. CVP jet quality exceed OEM and Keihin (Harley) carburetor jets. There is no guarantee that any part (original or CVP) will fit those knock-off carburetors. Mar 6, 2010 #3 Jan 2, 2011 · The Keihin 40 mm CV carb used by Harley Davidson from 1989 through 2006 has an accelerator pump. 2 days ago · OK, so I checked the VOES like the book says and it runs fine. Jun 7, 2010 · A Mikuni carb uses a slide only and is a variable venturi carb. $30. Harley/Kehin CV carbs are perfectly functional, reliable, and pain-free, but depending on which CV carb you have, you'll get better air/fuel flow with the S&S. Go to page 3. Please refer to your factory service manual. I'm a bit confused. In this video we tackle the rebuild process from the carburetor cleaning to a few modifications and especially the float adjustment of a Harley Davidson CV carburetor utilizing a standard rebuild kit. Introducing our exclusive Basic Renewal Kit for early model 89-91 Harley CV style carburetors. If you like a loppy idle remove it, if you want decent performance and mileage keep it. If vehicle is equipped with electronic ignition and a vacuum-operated electric switch (VOES), connect vacuum line to fitting on carburetor. Change nothing else; be sure to use the Harley plastic nut, not the Mikuni nut. And since it is a “bolt on” set up it just looks like an afterthought to me. Mar 15, 2018 · Step by step instruction on removing the CV carburetor on 2000 Road King. On the underside of the slide there is an offset hole used to displace vacuum/air as the slide moves up and down. If Your fuel petcock is stock it will also have a vacuum hose that tees into the voes vacuum hose as the original petcock is vacuum operated. You can find a replacement carb but you're going to look real hard for it and when you find it, it may have the same problem your carb had. Mar 28, 2016 · The other day a Harley magazine advertisement caught my eye entitled The Cure for the Common CV. In stock form, it is a decent carburetor, even though some Facebook Instagram Youtube Jul 18, 2019 · After rebuilding and cleaning the carb, I discovered the gas leak was from a punctured gas line. If you havent seen my first video (Dyna Tank Remova Mar 6, 2019 · -If the carb is an older CV, it has a fuel "run-off" line for excess fuel running from the bottom of the float bowl to the ground / atmosphere. If your CV carb does not have the name Harley Davidson cast above the bowl on each side it is a knock-off. I replaced the line and no leaks now. Will raising the needle richer up the idle? Or is that only for acceleration. Here’s a largely misunderstood part. Fits 1989-2006 Harley CV40 carburetors and CVK40 carburetors. $50 sure beats $500. I ran there emulsion tube and velocity needle in mine and the hesitation was completely gone. Your only three carb adjustments that effect closed throttle popping are float level, blade position and idle mix setting. Your carb has had the fuel inlet elbow replaced. Get your Harley running smoothly with this essential maintenance Mar 9, 2011 · I read endlessly about CV carb coughs. What is it and Do i even need one? If so then why didnt the old cv Carb have one? In this video, Fix My Hog Expert Bob explains why the Harley VOES is an important function and explains how to test the VOES switch. OR just run a new hose from the carb to the VOES. * 1 All images are for reference only and actual products may vary. Oct 13, 2006 · A tuned CV carb (without the thunderjet) will serve you right for many miles. Aug 30, 2003 · One of the most common problems that customers complain about is the spit-cough-pop from the carburetor as a Harley goes from idle to ¼ throttle. I put it back to the set up I had originally, 48 pilot, 180 main, N72A needle, but also bumped the timing up quite a bit. Precision American made pilot jets for Harley CV and CVK carburetors. Oct 2, 2010 · If plugged correctly, there will be no affect on the VOES operation. When it is time to rebuild that carb, do it right. Started by cpiccarr, February 15, 2016, 05:45:16 PM. The CV carb got an accelerator pump for the 1989 model year. For use with all 1992-2006* Big Twin and XL models using the late model Harley CV 40 carburetor. My manual shows the line coming off of the carb (now intake manifold with the S&S) to the VOES Jun 10, 2010 · Starts with the enricher out, but when warmed-up and enricher in, when the throttle is pulled back it spurts out fuel to the front of the carb and dies. Aug 13, 2019 · Carb Vacuum line. Jan 12, 2016 · There i is an adaptor you can buy that will bolt to an S&S manifold, but I find that using that set up places the carb too far from the motor. I am curious if the screw was turned out so far due to the fact that the carb was not getting enough fuel when it was leaking. Remove the Harley spring and plunger from the Harley choke cable. SE BIG BORE 44MM CV CARBURETOR KIT This carb kit is exclusive to Screamin’ Eagle. Mikuni also makes a CV carb for many other OEM applications. O. 6 days ago · 2) The harley CV carb has some really great advantages. Oct 29, 2005 · Harley-Davidson introduced the current CV carburetor on 1989 Sportsters and 1990 Big Twins. Fuel Probs; 10 6. If you have fuel in the carb and float bowl, when you twist the throttle from 0 to open the throttle plate, a piece of metal pushes in against a diaphragm to squirt fuel through the accelerator pump jet. 046 slow jet installed. The stock CV carburetor has a venturi diameter of 40mm (1. Put a large vacuum cap on the tower fixes most leaks. Jul 10, 2021 · Step by step process to show you how to clean your carburetor to make sure that your bike runs perfectly. Most CV's have suffer from that Mid rpm stumble. Popping and Stalling; 6 2. 5. Print. In 1990 the CV carb came out on the Big Twin models. The 42 HSR is a good carb, but you will not get good fuel mileage and the performance gain is not worth the expense in my opinion. As the slide opens the venturi size changes but at no time is there an obstruction in the flow by a butterfly. Jan 10, 2018 · You need to plug the vacuum fitting on the top of the carb that goes to the petcock is all. Mar 15, 2008 · What kind of mods have you done to your engine? I know the stock CV is a very good carb and can handle most builds up to 100hp or so with mods/boring out the throat etc Im using a 45 mm Mikuni Flatslide carb on my bike. Nov 20, 2012 · It might be VOES related as it may not be pulling fuel into the carb. The old elbow id removed and a CV-Performance brass elbow is put in its place. Carburetor assembly. This tech will show you how to machine and weld an aluminum adaptor for a CV carb that looks as clean as it performs. Coil within specs. Again, thanks for Jul 4, 2022 · Gold Star Harley-Davidson & Outdoors | CARBURETOR ASSEMBLY (onlinemicrofiche. The only way to know for sure is to peek under that timing cover in the NOSE CONE. Free shipping on orders $50+ and free returns. You need to take it off to properly clean it anyway. With my excitement to swap I didn't track the vacuum line that was on top of the old carb that went to the VOES. The CV (constant velocity) design creates smooth air/fuel delivery for exceptional low- and mid-range power. Plus the jets are 190/48. CV Performance offers the Original EZ-Just ® mixture screw, slide needles, jets, the latest design in vortex delivery emulsion tubes, carburetor parts, and complete tuning kits for your Harley-Davidson ® CV carburetor. It performs well but is not an all out performance carb IMO. Harley Davidson motorcycles are renowned for their robust performance and distinctive sound, a large part of which comes from their carburetion system. No problems at all. Mar 3, 2018 · High performance carburetor; VOES vacuum attached to carb; 5" Hg*, Drag Specialty# 2101-0010. Complete tuning and jetting components for your CV carburetor. Refer to the STICKY on elbow replacement. I just redid these heads and had to put the new ignition module in cause I broke the other one putting it back in. But I'd say, depending on your plans for your bike, stick with modding your stock CV. Bought from Chicago Harley: Ignition rotor, intake seals, ignition module & voes deutch connectors & pins, spark plugs, spark plug wires, throttle cables, parts to rebuild carb. Includes the parts necessary for rebuilding carbs Find Bar & Shield CV Carburetor Top Cover 27040-88T at Harley-Davidson. so that lead me to the testing of the voes. The VOES is a motorcycle part described as a vacuum ignition retard device. 0 Members and 1 Guest are viewing this topic. You're trying to fix an exhaust issue with jetting. With minor upgrades like the Yost Power Tube, so long as your motor is basically a mild street motor, there's no real reason to switch from the CV carb until you have much hotter cams CV performance had the best tuning guides and parts for the CV carb. The only negative thing I can think of is the slide rattle is noisy at idle. Do your own work and May 18, 2022 · Ended up buying a used carb body to fix the problem. Feb 13, 2016 · Coughing out the carb and took forever to warm up, and with wide open throttle would "slow down" until I backed it off a 1/4 turn. If it switches to the advanced curve too early, you could have detonation problems. Anyway, I got it on the road and ended up rejetting to a 45 and a 180 main jet. After replacing that I got the bike running again and its working. The DYNA ignition you are most likely running is a mechanical advance and is not set up to use VOES. I have a CV on my '05 Kaw KLR 650 that is nearly identical to the one I swapped onto my '74 FLH. pmwcet cmjz dvp fycnwb maxoou faboyc sreerp dori evudqoi kcxfcv