Th3g3rm4n4t0r
Brawlin' n Flippin'
- Location
- Ajax, Ontario, Canada
I know ADA posts what you should be using etc i wanna know from some people on here what is should run 35cc domes (200PSI) at? 94 octane? I have YA7635L.
ADA Dome Sizes & What Octane To Run
- Thread starter Th3g3rm4n4t0r
- Start date
Th3g3rm4n4t0r
Brawlin' n Flippin'
- Location
- Ajax, Ontario, Canada
Ill be using an MSD enhancer for now
Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
Run 37cc
What type of riding? 'Brapp brapp' freestyle type of riding or will you be riding wide open much?
Elevation?
Vumad
Super Hero, with a cape!
- Location
- St. Pete, FL
I can't remember exactly, but I think my 1mm overbore cylinder with 35cc domes put out 200+ lbs of compression. I had to go to 37cc domes and got 170 psi. I had the domes that by the chart should have been 180psi and had to buy a size up after install, fresh rebuild.
Th3g3rm4n4t0r
Brawlin' n Flippin'
- Location
- Ajax, Ontario, Canada
I am well in the know with tuning. Just need to get opinions as i know the compression varies, i will do mostly wide open, basically half freestyle, half freeride.
"Elevation differences range from 75 metres (246 ft) above sea level at the Lake Ontario shore to 209 m (686 ft) ASL near the York University grounds in the city's north end at the intersection of Keele Street and Steeles Avenue.
I will also be riding at 613ft in northern ontario.
pipe, aftermarket carbs, and proper prop pitch and slip all will pay a big role
start by learning mathematics of your engine and calculate compression ratios for a 760 engine with 35cc domes.... now select fuel octane to go with the math
altitude about 500-1000 ft is about .6 tenths of compression ratio you can go higher
especially if doing any wide open with an enhancer that really doesnt retard much on topend for high compression ratios on pump
maybe 2-3 degrees max if you short prop it and pickup extras revs unless you backpedal it out at the stator
start by learning mathematics of your engine and calculate compression ratios for a 760 engine with 35cc domes.... now select fuel octane to go with the math
altitude about 500-1000 ft is about .6 tenths of compression ratio you can go higher
especially if doing any wide open with an enhancer that really doesnt retard much on topend for high compression ratios on pump
maybe 2-3 degrees max if you short prop it and pickup extras revs unless you backpedal it out at the stator
Th3g3rm4n4t0r
Brawlin' n Flippin'
- Location
- Ajax, Ontario, Canada
Went with my 38 domes. I'll probably run 91. Thanks