truggy83
RCTalk Talkaholic
I picked up this OS engine for $25 from a local guy. He said it came out of an HPI. It says O.S. Max on one side. It says CV-R under the exhaust manifold. The muffler says HPI. It has good compression. I was just wondering how good of an engine this would be and if it would be fast as say a traxxas 2.5 R or 3.3?