318 - intake vacuum leaking

MOPAROFFICIAL said

Uh he either milled 18+ cc out of them to 50cc, or he milled 8cc out. Sounds like 8cc.
About .005 per cc for small 318 head, hair more for closed small chamber 273/318
Felpro "blue" ? Assuming a PT8553, measured crush is about .046.
He milled .100, or .040...
The stock shim was about .019-021

He's either .074 lower or .020 lower... the later points to just nothing but a bad gasket seal sucking oil. He may need nothing but the right gasket.

Gotta have the correct info.

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yes my mistake- called machinist- he remembered the job as he does a lot of work for my shop. He said it was probably 0.40” as .100” was for a similar head on a diesel we did for a farm tractor. Anyhow when I removed the gasket and dropped the intake on the heads bolt holes lines up with a tad more hole above the threads. A quick leak down test showed piston ring leakage only on the cylinders that had crusty plugs. All valves are sealing tight. A new compression test after sitting 24hrs and my readings were between 150psi and 154psi. I’m getting a proper set of 318 intake gaskets and putting it back together with new plugs and driving it and retesting results. If it clears or slows oil consumption I’ll leave it alone. It if continues I will pull this engine back out and take apart lower end. Thanks for the help.