Quote: Anybody think 8-10% is kinda high on a leakdown test? IIRC, 4% is about the most you would like to see. I'm sure you could run one that is worse than that and be fine but he is at double or more of that.
dont' know for sure. i was told that somewhere around 4% was great for a race engine, 8-10% was somewhat average for a street engine with some miles on it.
that said, would be nice it if was better, but my understanding was that it wasn't bad either.
