curtiss_robinson

So i fire up my new motor after its rebuild (my first rebuild)...the car starts up fine...idle is off but acceptable for now. After about 5 mins of the car running i notice that oil is dripping out of my exhaust. I have hedman hedders so the oil is not coming out of the tail end...its coming out at the flange where it turns from 4 pipe to 2 pipe...I pulled off the headers and every cylinder was letting oil out. I just had a valve job done...so i know its not the valve seals. I put new piston rings in so i now its not the rings. So how else could so much oil get inside? Could it be the angle of the new piston rings were put in is wrong? Im totally stumped on this...i need to fix the problem soon...being that the car is now going to be my daily...I need help. What do you guys think is causing this???? feel free to ask questions. Thanks.

speed_demon018

did you get the right size piston rings?

curtiss_robinson

Im pretty sure i did...theres a small chance that the previous owner had the cylinder bored a little but to my knowledge the cylinders are not oversized...Know of any way to check if they are oversized?

speed_demon018

measure the cylinders with a dial, but make sure you know what the stock specs are for the cylinders..

curtiss_robinson

Ill check it out tommorow....I appreciate the quick help.

93LsVx

i had oil comming out of cylinder one, and it ended up being a valve stem seal.

curtiss_robinson

I finally fixed the problem! it was the rings...my bottom oil ring was not gapped correctly...and i did get the head bolt fixed so im sure that helped to. Thanks for the help.