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> late model heads, plugging air ports
TheCabinetmaker
post Mar 31 2004, 07:05 AM
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What is the best method to block the air injection ports on the late model heads? All I have is two holes. I know there is susposed to be tubes in the holes, but they aren't there.

Thanks in advance, Curt
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nebreitling
post Mar 31 2004, 09:36 AM
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there's a comprehensive thread on this very thing if you search for it. me having the old tubes, i just blocked them off with a ball bearing and caps -- works great, except...

one (which was never very tight) came out the other day. i DID use JB weld to help support it back in place (IMG:style_emoticons/default/cool.gif) , and it's holding so far. head temps run, what, <400? JB weld is good for 500+? not much "headroom".

one thing i wonder about the late heads -- when blocking them, are we not letting them ventilate enough? earlier heads have a vaccuum tube for this purpose...
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