2-stroke thats 4-stroking? - Bobs 4 Cycle Karting The term 4-stroking" is really just a term for "mis-firing" When a 2-cycle engine is TOO rich, it doesn't *necessarily* fire every other stroke more like: it's just firing when the conditions are good enough to fire That may be every other stroke or every 3rd or 4th, or back to every other It's unpredictable (and doesn't really matter)
Cheapish stroker build | Bobs 4 Cycle Karting I hate to ask all this questions or list new postings on them all still tied in with stroking an animal you or anybody else would you happen to know off hand the stock cc's on a animal head and the cc's on a formula head thanks
Bores and Strokes - Bobs 4 Cycle Karting A 196cc crank at 54mm stroke OK but a 160 crank hard to make up the difference Our senior class years ago when the GX200 was introduced we grandfathered the 160 and allowed them a no weight advantage Real close racing in the twisties but the 200 would out pull the 160 out of the corners and down the straights even though some were 40 pounds heavier
Tillotson carb adjustment - Bobs 4 Cycle Karting The tillies are fun to to race if there maintained and the driver has a little experience on tuning the settings Initally I'd start a 1 5 turns out on the low side and 1 25 on the high
Tillotson carb adjustment | Bobs 4 Cycle Karting pop off is very critical so is fulcrum height i believe i used to set pop off 8-10 fulcrum height at 060 make sure to clean inlet valve so when it pops off the pressure doesnt drop too much a litttle is ok then set mixture screws like others said i dont like it to idle race engines dont need to idle but if it falls on its face lean out high side usually itll bog on starts i tend to keep it
Budget GX390 stroker build. | Bobs 4 Cycle Karting Stroking and boring this engine will increase the capacity to 440 cc from 390 that's a 12 % increase That means that you only get around 12 % more torque and thus 12% more power for all the money you spend stroking this thing It's the worst value performance mod you can do! To answer your questions: a)
GX340 Questions - Bobs 4 Cycle Karting Is there a crank readily available to get the added stroke? This could get expensive as apposed to simply boring to 390 spec Im all for added displacement but the case is already pretty full with a 66mm (420)stroke crank Boring is relatively cheap in comparison to any measurable gains by stroking these things
2006 CRF450 Build Recommendations | Bobs 4 Cycle Karting There's no replacement for displacement 500cc is simply bigger than 450cc To get there, now you're forced to look at boring and stroking -----Thanks and God bless, Brian Carlson Carlson Racing Engines Vector Cutz www CarlsonMotorsports com Carlson Motorsports on Facebook www youtube com 35 years of service to the karting industry ~ 1Cor 9:24
Custom Briggs Cylinder Sleeves. | Bobs 4 Cycle Karting If you want to sleeve or re-sleeve an Animal block i have some custom sleeves and pistons for you These sleeves are the correct length for the stock deck height Animal of Model 15 plus they have a shoulder on the top to make sure they don't slip deeper into the block Some will say just leave