I need someone's expertise: Just started a very old engine ('89 G2-13, and it started IMMEDIATELY. However, it sounded weak, maybe on one rotor, then after five seconds or so, it seemed to "clear up" and sounded OK (?). It had no noticeable vibration, actually felt smooth, without any unusual noises.

I guess my question is: What do they sound like when running with full exhaust...4 cylinder, 3 cylinder??

Aside from the smoking which I kind of expected, I'm not sure what it should sound like.

This is a chassis purchased to eventually be an ITS race car. Construction will start very soon if the underside looks as good as the outside.

Any thoughts?

Good racing.

Bill