CL77 smokes after rebuild

pwdavis45 · Post by **pwdavis45** » Mon Mar 31, 2014 5:07 pm

I just finished a rebuild on my cl77 with .5 over pistons and new rings with a re-bore and honing. Engine started smoking (white out the exhaust) after warm up mainly from the right jug. I pulled a compression test after about a 30 minute engine run and the right cylinder was at 90 psi and the left at 120. I did the old oil in the cylinder test and both sides came up to 150. I feel I did everything right and measured and corrected the ring gap according to the instructions. Also positioning the ring gaps the right way and with the right side up. Am I not waiting long enough for the rings to seat? What else could be wrong. Need help...Thanks.

rustywrench · Post by **rustywrench** » Mon Mar 31, 2014 8:44 pm

Seems you did it right but need to let the rings seat. If your carbs are adjusted for running, drive it for a few miles and don't hold a constant RPM for long periods. You should be just fine. Rusty

pwdavis45 · Post by **pwdavis45** » Tue Apr 01, 2014 10:00 am

Thanks Rusty...will give it a try.

SWARDLAW · Post by **SWARDLAW** » Thu Apr 03, 2014 7:10 am

I have a CA78 1969 that I've restored and it took about 200 miles before the rings finally seated and now it's a completely different motor. The slight smoke and lack of power had me worried at first. Good luck and enjoy.