Harley Cv Carb Jetting Chart
This is also true of all road-going bikes sold in America for the last quarter century.
Harley cv carb jetting chart. Always remember to change one carburetor component at a time and keep a record of your changes. Keyster make generally supplied. H 05 Carb Application NOTE OEM PART NUMBERS USED FOR REFERENCE PURPOSES ONLY.
Please consult your factory service manual or a qualified technician when working on your motorcycle. I make sure the match of the AC is smooth. Precision American made main jets for Harley CV and CVK carburetors.
Sportster Carburetor Jet Sizes. Most carbs come from the factory with phillips head carb bowl screws. I have 96 Road King that has a KN filter upgrade Andrews EV27 cam Vance Hines slip ons and a SE 8000 limit ignition module.
150-250 Δ 10 8mm Length N424-32-SIZE 5mm Slot. However and this is important at idle and above ¼-throttle the jetting is pretty good. Stock Harley jetting is very lean from just off idle to about ¼-throttle.
You can do none of the radical stuff I do and still the CV-40 is a great carb. Keihin Part NoSize Dimensions N424-27-SIZE 7mm Slot head Harley-Davidson CVH CV Type carburetor. You can see the carb top diaphram spring disphram with slide plastic spring seat and the actual needle.
High Performance Harley-Davidson Motorcycles - Keihin CV Carburetor Modification and Tuning Get XiED. To avoid injury carburetors should be installed when the engine is cold. A CV carburetor Constant Velocity incorporates a vacuum operated slide that varies the venturi size within the carburetor thus maintaining a constant velocity.
The carb bowl will be removed quite a few times during the rejetting process. If you are rejetting for a trip to a high altitude the engine will run rich in the mountains then smaller number main and pilotslow jets will be needed. It also has a fat taper D147 and is a rich needle.
HD 200708 Performance Recommendations. The Harley CV carb uses an Idle mixture adjustment screw instead of an Idle Jet but many motorcycle carbs do not. For additional product support of CVP products please visit our Support Forum.
Can anyone recommend jet sizes low high speed for my stock CV carb. Engine pings or knocks excessive engine heat. Discussion in Engine Fuel and Exhaust started by T-Skully Mar 6 2009.
This one is a Dynojet needle. Quick Jetting Guide for Mikuni and Keihin CV carburetors with movable jet needles. Harley Davidson CV Carburetor Upgrade Harley Davidson started equipping models with the CV carburetor in 1989 and has utilized the same carb ever since.
This simple procedure is a great Harley tech tip that applies to all Harley carbs from 1989 to present that use the CV style Harley Davidson carburetorEarlier models equipped with the older butterfly style carbs pre-89 Evos Shovelheads Pans and Ironheads. Main jets supplied by CVP are sized to original OE specifications from H-D and Keihin. Tuning your Harley Davidson carburetor is simpler than most think and can be performed with a few common tools.
Dont let the Harley heat monster ruin your riding. Evo CV Carb Jet Recommendations. Mix screw depends on bike go for smooth idle 2-3 turns out.
JETTING RANGE EFFECTIVENESS CHART THROTTLE OPENING. Controls fuel mixture from 18th throttle opening to 14 throttle opening Needle jet both the taper of the needle and the circlip position on the end. Controls fuel mixture through the midrange from 14 throttle opening to 78ths throttle opening.
50 slow 030 shim under needle. Cool your exhaust temperature with. Read the owners manual for your vehicle before installing any Keihin product to prevent any damage to the vehicle due to improper installation.
While the Harley CV can become a performance carburetor with the right tuning and components there are circumstances where stepping up to an aftermarket carburetor may be necessary. Get installation instructions tuning tips videos and how-to guides for your Harley CV carburetor and other CV Performance brand parts. To visualize how the various circuits overlap please refer to the jetting chart.
Harley Cv Carb Jetting Chart S Cycle Cv Carburetor Jet Kits User Harley Davidson Sportster Parts Diagram Www Picswe Com 4 Steps S S Cycle Harley Fxr Wiring Diagram Diagram Data CV Carburetor Modifying the CV carb Tuning a CV carb Camshafts Selecting a cam Install a TC 8895 cam Install a Big Twin cam Install Sportster cams Camshaft Specifications Twin Cam. Harleys Keihin CV constant velocity carburetor is based on the basic Amal slide carb design from the early post-World War I era. If using with a DynoJet kit or various aftermarket jet holders emulsion tube the threads will not match.
Popping back thru carburetor. Jetting depends on bike where your at but I am running 197 drilled main. Sizes 170 175 180 185 190 195 and 200CVP jet quality exceeds OEM and imported carburetor jetsNote.
The slide also holds a needle that when lifted by the. I also laid out 2 more needles including a narrower taper Dynojet needle and a stock needle N72V which is a nother rich running needle. Note about repair advice.
CVP Tuners Kit and. Reduce Engine Surging Improve Throttle Response Reduce Engine Ping. What Harley carburetor jets should I use.
Home Products Aftermarket Tuning These guidelines should be followed when installing carburetors and other Keihin products. Year 1988 Engine 883 Jet Size 170 California 165 Year 1988 Engine 1200 Jet Size 200 California 180 Year 1989-1991 Engine 883 Jet Size 175 California 155 Year 1989-1991 Engine 1200 Jet Size 175 California 160 Year 1992-1994 Engine 883 Jet Size 160 Year 1992-1994. Keihin Jet ID Chart Type Size Sized in steps of 2 3 eg.
This includes racing or big bore builds that stretch the original CV beyond its limit. KEIHIN CARBURETOR MAIN JET SIZES 1988 TO 2006. Jetting Your Carb Circuits.
