Compression?

jaddict

New Member
Dec 18, 2011
93
0
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NORTHWEST INDIANA
Got stock motor ,Fmf full sst exhaust,boysen power reeds, oil injection block off, running 32:1. Did a compression test and it read 160. Now my Manual says between 140 & 160. I have read some threads that only modified heads will read higher than 130. Does any body have some insight on this?
 
your gauge is wrong or your head is modded !
 
I know if you bore it you will get some more compression. i deffinitly noticed when i kick my 03 which is bored .010 over then my 96 on stock bore which is around 125 psi and has about half a tank of gas on it. not sure what my 03 reads but 120 thorugh 130 should be good for stock bore and or head.
 
Checked it with another gauge and mine still reads between 150 and 160.

Then congratulations sir you have a modded head and probably one hell of a beast on your hands!I:I Thats definately a very healthy motor check it over and catch anything that may sacrifice any health or longevity in the engine.

My g/f's blaster is at 137psi with a .050 wiseco,boysen reeds,fmf gnarly and its a terror for what it is so im sure yours is beastly bro.