what gas are you running c14 ????? that is hightDid a compression check on a buddys 925 with my craftsman gauge and read 235psi across the board. Couldn't believe it so we checked it with his snap-on gauge and read 240psi across. is there such a thing as too much compression? Only runnin 4-500ft with it.
is he jetted right 500ft elevation. how is the piston wash ???Its not my motor but im not sure who it was. Next time i see him ill ask him. Came with crankshop pipes and carbs and ignition and i think dyno sheets as well. My guess is that motor was build for high altitude where it wouldn't have this kinda compression up there but down here at 500ft elevation its got a ton of it.
The engine was probably designed to run at 10,000 ft. Compression will be about 32 psig less up there, then it is down here.Prolly have him try some c-14. Not sure who the engine builder is. Motor was bought second hand here on dootalk over year n a half ago from someone in utah.