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gbmidyear66 · 09-15-2013

Jerry, read your questions more carefully. Your observation that the inboard gasket material is pushed out is interesting. I was focused on the vacuum leak - the outboard area pulled in - which I assumed was caused by vacuum. But that would not explain why the inboard is pushed out.

The gasket was bound in place as you see it - took an hour to scrape it off the plenum last night - but obviously I never mounted it like that.

Somehow it seems to have become distorted - I tightened the plenum down from the center working out towards the ends. I can only think that the gasket may have been slightly misaligned relative to the bolt holes and under stress - and what we see is the result?

By NOT attaching the gasket this time - it pretty much had to go on without any stress in the X-Y plane - hope this does it.

09-15-2013	#22
gbmidyear66 Join Date: Feb 2008 Location: Vancouver, BC Posts: 251	Re: Ported Intake Gasket Woes Jerry, read your questions more carefully. Your observation that the inboard gasket material is pushed out is interesting. I was focused on the vacuum leak - the outboard area pulled in - which I assumed was caused by vacuum. But that would not explain why the inboard is pushed out. The gasket was bound in place as you see it - took an hour to scrape it off the plenum last night - but obviously I never mounted it like that. Somehow it seems to have become distorted - I tightened the plenum down from the center working out towards the ends. I can only think that the gasket may have been slightly misaligned relative to the bolt holes and under stress - and what we see is the result? By NOT attaching the gasket this time - it pretty much had to go on without any stress in the X-Y plane - hope this does it.