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Oil vapor condensation-plugs/PCV valve/hose

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Old 02-18-2011, 03:28 PM
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Oil vapor condensation-plugs/PCV valve/hose

My buddy and I are in the process of tuning the 98 SH I just bought, and we found that there was oil all over the plugs and PCV valve and into the hose leading back to the intake manifold. We checked the valves, and the rings are still good, so we assumed it's oil vapor condensation.

So we tried shrouded plug extensions and I'm going to check it out again in a few days, but what about the PCV valve? Just replace it more often? Doesn't seem to be affecting functionality much, but it will eventually.

I'm also assuming this is a common problem for such a shallow block. Has anyone else dealt with this? I'm considering trying an oil cooler, but I don't think an oil cooler is going to cool the oil enough to completely prevent the oil from vaporizing.

Also, compression on cyl 1 and 2 are at 120lbs, 3 and 4 at 90lbs, so a valve adjustment is in order. We're just going to do a valve job, but we're conflicting on what cylinder pressure should really be. I'm saying 125-130, he insists it should be 145-150. He's used to working on V6 and V8s. What's a good max for VTEC?

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