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stock 70 L/C compression
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Posted by: Rayzer

when testing the compression on a stock 70cc liquid cooled what are the normal parameters. I am getting about 155psi. I am not concerned about the 155 but i would like to know when it gets down to the point where the piston and rings need to be changed out.

Posted by: bulldogfallon

I am not 100% sure how consistent the PSI is across the DRX70s from the factory...

Best bet would be to put in new rings and test again to know your baseline for comparision.

You will also find variances in results from guage to guage

Posted by: Rayzer

Good idea, it's the first time that I have checked it. It is getting time to change the rings anyway if you go by ride time but I still think that reading sounds kinda high to me.

Posted by: thedeatons

Did you ever come up with good compression numbers?