Keihin cv carb Fits 1989-2006 Harley CV40 carburetors and CVK40 carburetors. See All 10 Photos. The carburetor consists of several components, including a throttle valve, a main jet, a pilot jet, and an idle screw. Try here: identify that jet. Mar 27, 2012 · Once the carb body and bowl are cleaned and polished, and the carb throat is polished, I'm ready to reassemble. Keihin non-CV 1986 - 1987: Carburetor Serial Number Installed On All Models ; 27501-86A (B83H (86-87) - XLH 883 All Models Domestic and California: 27502-86B (B83H) (86-87) - XLH 1100 All Models Domestic and California Understanding the Inner Workings of the Keihin CVK32 Carburetor. Natural finish 40mm CV carburetor is for 1340 models and is an accurate reproduction of the Venerable Keihin CV carburetor. 3 out of 5 stars 122 Chrome Keihin CV Carburetor Top Cover - 82307 V-Factor. Carburetor runs clean to approximately ½ throttle but breaks up before ¾ throttle as a result of too rich condition. Jun 1, 2004 · I wrote this manual for Mikuni, and although it directly addresses the Mikuni carb, the diagnostic principles apply to the Keihin CV and many other carburetors as well. My Account; Harley Early Keihin KLR 650 Buell CV Carburetor Rebuild kit for Harley CV style carburetors. Harley Davidson 27492-96. The Keihin CVK32 carburetor is a vital component of an engine’s fuel system, responsible for precisely mixing air and fuel to ensure proper combustion. Condition: Needle or needle jet is too lean: Carburetor runs clean beyond ¾ throttle and has an erratic throttle response. Feb 17, 2016 · Harley Keihin CV Carburetor Allen Socket Cap Head Screws or Bolts Fits These Bikes: Sportsters 883 & 1200 1988–2006 Dynas 1992–2005 Softails 1990–2006 Glides 1990–2006 Road Kings 1994–2006 Replaces Stripped-out Original Keihin CV Screws No Rust Ever Grade 18-8 Stainless Steel Non-strip Socket Cap Head Style New Screws For: Accelerator Pump Cover Float Bowl Cover Top Cover Idle Screw Oct 14, 2018 · Buy Alpha Rider Pro Carb Rebuild Kit Mixture Screw For Keihin CV CVK Carbs For Harley Big Twin 1990-1999, Twin Cam 1999-2006 & Sportster XL 883 1200 1988-2006: Carburetors - Amazon. Visit CV Performance to get your American made carburetor parts for Harley motorcycles from CV Performance. * Only for use on CV 40mm carburetors from Keihin made for Harley-Davidson. This 13-piece kit includes gaskets, rings, manifold to carb seals, accelerator pump seal, upgrade Viton needles, float spring, boot and all other common parts necessary for a complete rebuild of your stock CV carb. Notes are included on modifying parts like drilling holes and using lighter springs. To get your Harley's stock carb right, follow these instructions: l. com Nov 16, 2018 · 100% Brand new and high quaility aftermarket Carburetor ; 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 ; Fits:<br> Softail 1988-2017<br> Dyna & FXR 1988-2016<br> Touring 1988-2016<br> Sportster 1998-Up<br> top cover with choke bracket for keihin cv carburetor v-factor accelerator pump diaphragm kit. It then provides step-by-step instructions for cleaning the carburetor through methods like draining the float bowl, spraying carburetor cleaner directly into ports, and partially disassembling the carburetor 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. 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. 27094-88). The Genuine James Rebuild Kit for Keihin CV Carbs is the rebuild kit you need to restore the performance of your ride. This needs to be replaced. See full list on gadgetsfixitpage. Accepts stock size 1/4" fuel hose while improving flow by up to 20% when compared to stock inlet fittings. Sizes #42, 44, 45, 46, 48, and 50. Sep 17, 2010 · Sometime in the mid 90's Keihin changed the venting on the CV. org 1 All images are for reference only and actual products may vary. Withdraw choke cable (moving the choke lever "on" helps here) and remove carb. v-factor accelerator pump diaphragm kit v-factor air mixture screw kit Unlike "slide" carbs (similar to Amals, or Mikunis), which can be finicky, hard to tune, and generally offer primarily top end performance as their specialty, the Keihin CV carb is designed for better all around drivability. It discusses potential carburetor problems like contamination, improper adjustment, and component failure. Imported item by Cycle Pro*. The document provides images and diagrams of a Keihin CV carburetor to help understand its parts and circuits. www. Right Side Main Bearing Assembly Blue - 31-4055 S&S Cycle. I am thinking about putting a Keihin CV carb (40mm) on my 89 Heritage. CVP jet quality exceed OEM and Keihin (Harley) carburetor jets. Match your carburetor number to be sure. Do not buy it! It will not work. ClassicCycles. Natural finish 40mm CV carburetor is for Harley Davidson 1340 EVO and Sportster models and is an accurate reproduction of the Venerable Keihin 40mm CV carburetor Kit. CV40 Carb Rebuild Kit Replaces OEM kit 27006-88 for use with all 1990-2006 Harley Big Twin or 1989-2006 XL models using the CV carburetor only. Contrary to popular folklore, all Keihin non-CV carbs did come with accelerator pumps. Inside the CV carburetor there are a series of tiny passages connecting the mixture screw, pilot jet, and air intake jet located on the front face of the carburetor (pictured below). This brings us to the subject of upgrading these older Harley “Soup Cans” to the newer CV style carb. This document provides instructions for maintaining a Keihin CVK32 carburetor. By analyzing the diagram and making appropriate adjustments to the different components, motorcycle enthusiasts can achieve optimal performance and fuel efficiency. Quality reproduction of the 40mm Keihin Constant Vacuum with accelerator pump. Jan 1, 2023 · The Keihin CV carburetor with accelerator pump has been used on Sportsters since 1989 and on Big Twins from 1990 on. All constant velocity (CV) carburetors are designed to compensate for changes in altitude and barometric pressure. Refine Search * EXPLODED VIEW DIAGRAMS (954) Information. * Aug 21, 2015 · Secondly, I've had a fair amount of experience tuning/jetting carbs on Keihin CV carbs on 3 different types of bikes and have learned several things. If you have a 2003 Keihin CV, it won't have an Mar 28, 2016 · Unlike aftermarket carburetors using throttle controlled slides or butterfly valves, the Harley CV made by Keihin uses a vacuum actuated slide. CV Carburetor Rebuild Kit,CV Carb Repair Kit for Harley Davidson CV40 CV 40mm XL883 XL1200 carb engine. I have rad a lot of books about these. This kit packs gaskets, seals, and o-rings to refresh your Keihin CV carb, bringing back crisp throttle response and smooth idling. Everything is home made and DIY as usual! ** CARBURETOR DIAGRAMS & PARTS LIST. The old elbow id removed and a CV-Performance brass elbow is put in its place. The ThunderJet™ adds that much needed high speed fuel circuit to the CV, allowing the existing fuel circuits to be more fine-tuned to specific power ranges, resulting in a more balanced fuel curve. Properly tuned, a CV carburetor is capable of supporting 80+ horse power in modified engines. * Not for use on non-Harley models or other Keihin carburetors. A Harley CV carburetor by far outperforms it’s butterfly style predecessors, namely the Keihin, Zenith, and Bendix. The cv carbs are probably as sophisticated as a carburetor can get. The Keihin CV carburetor is a common type of carburetor found on many motorcycles. Up to that point the carb vented from a overflow tube under the bowl. In my "early" years I rebuilt a lot of auto carbs. The same injection molded fuel inlet elbow is installed on both types. The slide on a conventional carb is directly connected to the throttle cable. Harley brass fuel inlet elbow replaces the stock fuel inlet on Harley CV 40mm carburetors and earlier Harley Keihin butterfly carburetors. jpcycles. Click here; 4. Correction: replace needle with next leaner diameter and test again. So I have hands on and theory too. Only for H-D CV40 carburetors 1992-2006. com/motorcycle-air-intake-and-fuel-systems?utm_source=youtube&utm_medium=description&utm_campaign=The_Anatomy_of 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 CV or SLIDE CARB - The Great Compromise. Precision American made pilot jets for Harley CV and CVK carburetors. At the time I'm rewriting this for VN750, this includes 3 personal VN750s of mine and maybe a couple dozen other bikes. However, like any other part of your motorcycle, the Keihin CV carburetor requires regular cleaning and maintenance to ensure optimal performance. It labels different areas of the carburetor including air and fuel passages. 95 Part #: 1404897 Mfg Part #: 82307. I was a diesel mechanic for 10 years and went back to school and got a mechanical engineering degree. Oct 29, 2020 · Owners of Harleys® fitted with Keihin CV carburetors can reap the benefits of the ThunderJet™. After the change they started venting the bowl internally. Jun 26, 2019 · Alpha Rider Pro Carb Rebuild Kit Mixture Screw For Keihin CV CVK Carbs For Harley Big Twin 1990-1999, Twin Cam 1999-2006 & Sportster XL 883 1200 1988-2006. (Keihin CV-32) JBM also has 67 mm square groove for Kawasaki Ninja & Vulcan 88 1500 Keihin CVK36 carburetors replacement carburetor diaphragm for your vintage motorcycle. . It is designed to mix air and fuel in the correct ratio for combustion in the engine. The stock CV carburetor has a venturi diameter of 40mm (1. Available for all 1989-2006 Big Twin, Twin Cam, and Sportster models using CV style carburetors. 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. Currently, I have the original butterfly carb. 575 inch). On a CV carb the throttle cable is connected to a butterfly valve that varies 40mm CV carburetor. com FREE DELIVERY possible on eligible purchases Tune your carb with the Genuine James Carb Rebuild Kit for Keihin CV, a complete overhaul for Harley fuel systems. Keihin CV 34 Series Scroll down and review all types before ordering. _x000D_ _x000D_ In compliance with ARB emissions laws, this product is not sold or shipped to Here's the order we recommend tuning the circuits of the Keihin CV carburetor used on Harley Davidson models. In the case of this carb, the fuel inlet was plastic. pdf in the next posting. Cables, manifold, choke cable and air cleaner are not included. Buy and install a stock jet needle for a 1988 or '89 1200 Sportster (H-D Part No. Do not under-estimate the ability of the stock Keihin CV carburetor to produce good horsepower. Tuning tips are also discussed such as setting the idle screw, pilot jet, and main jet based on the engine configuration The Keihin 40mm CV Carburetor schematic diagram serves as a valuable resource for understanding the inner workings of this carburetor and can help with troubleshooting and tuning. However, it requires regular tuning and maintenance, which can be time-consuming and may not offer the same fuel efficiency as electronic fuel injection systems. The OEM elbow breaks easily, can be affected by today's fuels and has a restrictive flow rate. With the Yost Power Tube kit you get two drill bits, an Blueprinting Keihin Carburetors: Hi-Flow Air Filter Kit for Keihin Carbs: After much time and testing, FLO Headworks is pleased to announce to Harley-Davidson owners everywhere a new service: to blueprint your 1989-to-present-day 40 and 44 mm CV Carburetors with accelerator pump. The unique design constantly changes the size of the venturi (throat) based on manifold vacuum while simultaneously metering the air/fuel delivery. Exploded view diagram for KEIHIN FCR, FCR-MX, PWK, PWK-S, PWM, PJ, PE . Both the CV and conventional slide carbs are classified as variable venturi carbs. CV Rebuild Kit Replaces part number: 27490-04,27421-99,27421-99C,27421-99A,27465-04,27501-88,27004-89,27415-99C. Discontinued Blowout Sale - Out of StockWhile supplies last on this Closeout Item - ONLY $12. Four video clips on the KLR650 carburetor, the Keihin CVK40: If your needle jet is missing or worn CVP carries new needle jets. Dec 28, 2021 · Alpha Rider Pro Carb Rebuild Kit Mixture Screw For Keihin CV CVK Carbs For Harley Big Twin 1990-1999, Twin Cam 1999-2006 & Sportster XL 883 1200 1988-2006. These tuning steps apply to all Harley CV carbs from 1989 to present that use the CV 40mm style Harley Davidson carburetor but also apply to the CVK40 found on other models. Jun 29, 2015 · Care & Feeding Of The Keihin Carb This primer on the CVK40 (and generally, all CV carbs) has bounced around from elusive, and sometimes obsolete, websites; see the . You might want to print it out. 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 . Harley-Davidson® CV40 Carburetor Assembly: Harley CV40 2004-2006 model shown. Includes 1. Four video clips on the KLR650 carburetor, the Keihin CVK40: Things are wrapped up by installing the idle mixture screw and setting it for initial start up. Can I mount the 2001 on my 89? Harley CV carburetors* found on the following models: 1990-1999 Harley big twin Evo 1340; 1999-2006 Harley Twin Cam 88; 1989-2006 XL Sportster. The carburetor will need to be removed from the manifold so refer to your factory shop manual for this procedure. Refer to the STICKY on elbow replacement. Menu. $16. Don't buy the wrong kit. Complete tuning and jetting components for your CV carburetor. 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 Jun 29, 2015 · This primer on the CVK40 (and generally, all CV carbs) has bounced around from elusive, and sometimes obsolete, websites; recommend keeping track of the link, perhaps prudently printing out the article. Jan 4, 2025 · From 1986-1987, the stock Sportster carburetor was a Keihin 34mm, fixed-venturi “butterfly” model, as used on the Ironhead models from 1979 onward (BT models still used the 38mm version). Content is profound; I'm not kidding (now, though I often am!). 046 slow jet installed. 9 main jet and a . Finally we show you how to test the slide & diaphragm for proper operation; this is critical inspection on any CV or constant velocity style carburetor like the Keihin carbs used on Honda CL / CB350K from the factory. Will not fit CVK, aftermarket, or knock-off CV carburetors. Other models using a 1990-2006 retrofitted CV carburetor. Understanding its inner workings can help troubleshoot issues and optimize performance. H-D has used Keihin butterfly and CV type carburetors since 1976. * Pro Carb Rebuild Kit Mixture Screw For Harley Big Twin 1990-1999, for Keihin CV CVK Carbs Twin Cam 1999-2006, and for Kawasaki KLM CVK40 CVK36 CVK34 Carburetors 4. This change was because of an EPA requirement not to vent fumes or excess fuel directly to the open air. carb in hoses until free of airbox and engine intake hoses; rotate carb to expose choke cable plunger cap connection so you can unscrew the choke cable with a wrench or pliers or your fingers. Keihin carburetor number along with associated carburetor kit. Features: Jan 4, 2025 · From 1986-1987, the stock Sportster carburetor was a Keihin 34mm, fixed-venturi “butterfly” model, as used on the Ironhead models from 1979 onward (BT models still used the 38mm version). Twist the throttle grip and the slide is raised in the venturi. Keihin Replacement Diaphragm Page. 3) Clogged idle mixture circuit. Direct replacement for OE p/n 27371-76A. Instructions for ordering: check jet dimensions. If the jet in the carb does not dimensionally measure like ours, then it is not correct. Sep 21, 2020 · About this item . It is VERY common for the brass needle jets (in the top of the "emulsion tube") in 36mm, 38mm and 40mm Mikuni CV carbs to wear out in as little as 5,000 miles. Oct 9, 2004 · I was wondering if anybody could help me out. My questions: Are all 40 mm Keihin CV carbs the same? For example a 2001 vs a 1993. SKU: C200 Apr 11, 2013 · There are a few who know a bit more then me. Everything that I have read is that this is the best value carb around. Always start with a fresh set of spark plugs when tuning. #19 Keihin CV Carburetor Tuning: Hello Group, The Keihin constant velocity carburetor on your Honda CH250 should perform well with the standard recommended settings under average load, climatic, and barometric conditions. This is the most frequently used carburetor in the V-Twin industry and a great solution for many stock and custom applications. The Keihin 27038-90A 90-06 Harley-Davidson CV Carburetor is a reliable and cost-effective option for replacing a worn-out or damaged carburetor on FXR, XLH, and FLH models. Check them for "oblong" wear - the needle jet orifice starts out round! Factory Pro produces stock replacement needle jets / emulsion tubes for 36mm and 38mm Mikuni carbs. Fits Harley Davidson Big Twin 1984 - 2007 and Sportsters 1986 and later. Shop carburetor parts : https://www. It is designed to provide a smooth and consistent fuel flow to the engine, improving performance and fuel efficiency. JBM Industries replacement Keihin Carburetor Diaphragms for Kawasaki KZ250 and KZ440 & CSR305 twins & KZ750/4 with key groove and 71 mm. The Keihin CVK carburetor is a type of carburetor commonly used in motorcycles and other small engines. xvlmh wmnmwra qguld bvsmy noxc aro ozpu uclkugt obdj igaewfgw