What's the compression suppose to be? '72 Whisker Sachs 47

72ext

New Member
#1
Well that about sums it up, I have a '72 Arctic Cat Whisker with a Sachs 47cc and I've looked all over the internet and I need to know if 85psi is good compression or what it should be.
 
Last edited:
#2
Great-looking bike. I did a google search for 2-stroke compression tests and pretty quickly found a couple of sites that said 85 psi usually indicates a worn engine. They said a good engine will run 140-150 psi.
 
Top