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Old 03-12-2012, 04:32 PM   #11
Bullet Ride
Cars in Perpetual Repair
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Join Date: Nov 2007
Location: Guelph
Posts: 5,992
Originally Posted by InfiniteDice View Post
haha... yes I talked myself backwards there, what I meant was,

BIGGEST --------------- Smallest
Exhaust Port.....Gasket.....Head

We're not talking a wall here, more like a very small .5 - 1mm lip.

That way the flow steps out to the larger area... when/if you get back flow it will hit the lip but that's not important.
That makes more sense

That's what I did as well, except I left the port diameter in the head about 2mm smaller all the way around to account for the ability of the exhaust gasket to shift. I don't want any overlapping of the gasket and the port in the head.
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