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working on a sled I just acquired...a 1980 ET340 Enticer, runs decent however I want to go thru the entire sled starting with a compression test. Any one know what the recommended piston pressure should be at?? Thank you for any info
 

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Can't realy tell you what a recommended PSI would be on shuch a oler engine but the higher the better and anything over 110 on a small cc engine is good. And when you do the compession test they should not be more than a 5% difference between the 2 cylinders. So at 110 psi the other cylinder should not be 5.5 psi differance.
 
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