I was just woundering what amount of compression should be on a 50cc moped? When I tested my ped it only had about 30-40 lbs of compression??? That is with out rings though. I have ordered the rings and just want to know if they will make much of a difference...

Thanks for your help.

Re: Compression

My Puch and a friends Puch both tested at 105 psi.

Re: Compression

Yes, having rings on the piston will make a big difference, they're what actually provide the seal between the piston and cylinder.

Re: Compression

do not (i repeat) DO NOT run a moped w/o rings. you can damage your piston and cylinder. and those cost a lot of money.

w/ rings, you'll get much better compression.

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