1sick6 Posted August 4, 2009 Report Share Posted August 4, 2009 Hello, I just wanting to know a ruff main jet starting point for my new cheetah 535, Its running CPI big bore in-frame pipes, 39mm PWK Keihin carbs with K&N filters. Its got vortex X10 ignition and +4degrees on the timing plate. also has 21cc domes and running 98 octain pump fuel. also how many turns out should the pilot jet screws be? any info would be great, thank you, Paul Quote Link to comment Share on other sites More sharing options...
STINKYDELUXE Posted August 4, 2009 Report Share Posted August 4, 2009 I have a 543 cheetah with cpi inframes and 39 pwk running 110 octane with 6degrees I had a friend do the jetting so I don't know what the needle or the pilot jet are at but I think I'm running a 168 main hope that helps Pete Quote Link to comment Share on other sites More sharing options...
hercalmighty Posted August 4, 2009 Report Share Posted August 4, 2009 I have been helping a guy jet his 535 Cheetah. Here is his setup. Now we are thinking he needs a little bigger main right now: CP Industries 535cc Cheetah PV Cylinder (Drag Ported) Crankworks Billet 10mil Stroker Crank (Trued To 0.004", and Both Sides Of Pin Tig Welded) TZ Bearing on PTO Side, and Max-Load Bearing on Stator Side Crankworks 115mm Rods and Bearings Wiseco 73mm Pistons, Rings, and cir-clips Wiseco Wristpin and Top Bearings Cheetah Coolhead, with 25cc Removable Domes Cheetah/Trinity Power-valves with 230 Jets All ARP High Tensile Studs and Nuts V-Force 3 CR-250 Reeds Pro-Design CR-250 Billet Intakes Keihin 39mm PWK Carburetors K&N 14" Pod Filters Pingel Dual 5/16" Output Fuel Valve CPI Big Bore In-Frame Drag Pipes and Silencers Tusk Clutch Fibers and Steels, with stock weight springs Direct Drive Lock-out, with 2 Weights On All 6 Fingers Direct Drive Lock-out Clutch Cover ModQuad Billet Water Pump Cover Pro-Design Billet Water Impellor Shift Star Modified ModQuad Billet Dipstick Jetting is 52 Pilots, 180 Mains, CGK Needle 3rd Clip, 1 Turn Out on Air Screw Primary Drive 15/39 Gearing Quote Link to comment Share on other sites More sharing options...
seb4lo Posted August 5, 2009 Report Share Posted August 5, 2009 what fuel on that set up ? Quote Link to comment Share on other sites More sharing options...
hercalmighty Posted August 5, 2009 Report Share Posted August 5, 2009 Sunoco 110. He is getting it dynoed today for shits and giggles. Ill post what numbers he pulls. Oh with 25cc domes he had 198/200psi. Quote Link to comment Share on other sites More sharing options...
STINKYDELUXE Posted August 6, 2009 Report Share Posted August 6, 2009 Hello, I just wanting to know a ruff main jet starting point for my new cheetah 535, Its running CPI big bore in-frame pipes, 39mm PWK Keihin carbs with K&N filters. Its got vortex X10 ignition and +4degrees on the timing plate. also has 21cc domes and running 98 octain pump fuel. also how many turns out should the pilot jet screws be? any info would be great, thank you, Paul you may want to rethink the 98 octane idea. have you done a compression check? also it won't like only 4 degrees of timing just my opinion Pete Quote Link to comment Share on other sites More sharing options...
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