This is what I'm trying to figure out. It smokes some, mostly out the left side. And it's definitally consuming oil.stock z/28 said:Does your engine have a lot of blow by?
Yeah, it was zero decked. I certainly hope this may be the problem. I really don't want to pull this thing out.Paul Wright said:If it's smoking from one side it may be the intake gasket isn't sealing on the side closet to the valley and sucking oil into that side of the engine.
I'd pull the intake and look in the ports and around the bottom sealing surface.
Re-do the intake gasket and make sure you install it carefully and torque in the proper sequence.
Was the block zero decked or the heads milled? If so you may have a poor fitting intake that needs milling to fit.
Paul, when I put the intake on the engine without gaskets, do you know what kind of clearances I should have between the intake and the heads?Paul Wright said:I guess I was right on this one.
I thought the block was milled to Zero deck? .025" isn't a slight amount.
I'd check the manifold for fit without the gaskets. It may have a wider gap at the bottom than the top. You may have to mill the intake.
BHJ makes a checking gauge to see if the intake will fit after machining. See pix
You need to use the correct gaskets. "Close" is not good enough.
Also don't use the rubber china wall gaskets. They can add too much support at the ends. Use Red RTV. I think the torque spec is actually 35 ftlbs. Also make sure you torque in proper sequence.
Tightening one side then the other is a sure way to lift one side.
Alot of people underestimate the importance of intake fit. I sometimes spend days finnessing an intake manifold to fit correctly.
None, but it will sit lower. If you have gap a the bottom but it hits at the top edge then it will probably suck oil off the lifter galley.MarkM68 said:Paul, when I put the intake on the engine without gaskets, do you know what kind of clearances I should have between the intake and the heads?
I thought I saw one at a Sears Hardware store but I could be mistaken.DriveWFO said:Does Craftsman make a leakdown tester? I couldn't find it on Sears.com.