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So i just put together a minime for my civic (d15b7 block/ d16y8 head). It smokes like a train. Greyish blue thick smoke, so i assumed it was burning oil. Did a wet and dry compression test.

Dry results were: 140, 140, 155, and 160psi. Wet results were: 190, 185, 195, and 200psi.

Obviously the rings are bad because of the change in psi between dry and wet tests, but they are all above 135psi which is wat the "Haynes" manual says is the minimum allowed compression. Is it still safe to say that the amount of smoke is still only caused by the rings? I'd hate to replace them and figure out it didnt fix the prob.

 

ok so its more then obvious that your rings are bad, but rings are not the only cause of oil consumption. Valve stem seals are the second main thing to think about when your engine starts consuming oil. Did you do any work on the z6 head before installing it? If not, do you know how many miles the head had on it?

 

no didnt do any work to it before. (y8 head btw). if i remember correctly, head had a lil over 100k miles. came off of a motor that has been sitting for about 3 years. before that engine was pulled, it spun a rod bearing, had no smoking issues.

 

well you gotta remember that maybe when that engine ran the seals were fine. but sitting for three years the material they are made of gets really brittle