smoke after rebuild
 

I have a little smoke coming out of both exhausts after about an hour and a half of running after a rebuild.

It is not noticeable at all while driving. The plugs look great. Going to drive it tomorrow, check plugs again and do a compression check.

I only really noticed it when it filled my garage up. Again it is thin smoke, really just a haze. Not a hundred percent sure it isn't fuel.
Hmm, wonder if I should put in some new O2's....

Good luck..
Happy to hear all your noises went away.

I would guess that the motor is not broken in, and you may be getting a little oil by the rings. I have heard stories about heating a motor to a real hot level a few times to "seat" certain types of rings. But before you go worrieing about it put a few more miles on it.

I've heard that a good way to break in a performance engine is drive the first couple hundred miles constantly varying the rpms across the entire range, ie. idle to just below redline, while not going WOT.

Supposedly this causes everything to be on the loose side, netting more power. Of course, the drawback is some oil consumption from the looseness of the rings, etc.

Never done it, just hearsay. Anybody else heard of this?

Rich D.

more or less right on richd. It helps seat the rings properly into the cylinder. Cam break in is the first step in engine break in though.

Smoke is gone...
 

Looks like everything seated well. No smoke now, except for some fuel b/c it's running wayyyy rich.

Always something.:D