so...rebuilt 76 block, bored .30 over, whiplash cam. Heads were done by a separate builder and had stem height issues that i sorted out with a few diff length pushrods and adjustable rockers.
Since day one, i've had smoke on left bank exhaust. Also get a cloud on hard accel/decel. Compression ranges 129-140 across all cylinders cold.
All Plugs look good also. No oil on them.(permetex on threads in pic) I pull plug wires and see no difference in oil burning.
Tried replacing some valve seals with no change.
Engine has 1100 miles since rebuild.
One thought was a stuck oil control ring.
Another thought is..heads have unknown milling and Edelbrock performer intake is sitting slightly high and maybe pulling oil into a cylinder? I'm using a .060 intake gasket.
My leak down tester is Chinese garbage and needle didn't move off zero.
I'm leaning intake leak. Maybe use a thinner gasket to bring manifold down into "V" to seal better?
I thought about doing a B12 Chemtrol piston soak to unstick a ring on that side but i'm concerned how aggressive that is and hurting bearings even with changing oil right away. Pistons do have coking.
Any thoughts before i pull intake to check gasket?
See video below.
You used .030 over rings, right?
If you have a small intake gasket leak letting oil in, you should find some oil in the port on the head where the leak would be when you remove the intake manifold.
Before you rip things apart, check the PCV valve and breathers, they can cause issues as well if faulty or not setup correctly.
