exhaust manifold - Pontiac GTO Forum
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post #1 of 7 (permalink) Old 08-24-2015, 09:57 PM Thread Starter
 
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exhaust manifold

While driving the goat the other day I noticed all of the sudden a terrible exhaust leak. I got her home and got underneath and noticed one of the flange studs on the passenger side exhaust manifold was gone. I inspected the hole and the threads looked good. I picked up another stud today thinking it may have come loose and vibrated its way out. The new stud went in with no issues. while taking a test drive after about 10 minutes the same thing happened. Im thinking there is a crack and as the exhaust heats up its expanding and falling out. I am contemplating going with ram air restorations enterprises manifolds. has anyone used this brand? im trying to stay away from headers and with the 428 a little hopped up I figured these would breath better.
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post #2 of 7 (permalink) Old 08-25-2015, 10:05 AM
 
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I had the ram air III on my 428. Never had a problem.
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post #3 of 7 (permalink) Old 08-25-2015, 10:18 AM
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Maybe you may be able to JB Weld the stud in? Or give it a tack weld or two?
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post #4 of 7 (permalink) Old 08-25-2015, 06:19 PM
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The RA restorations manifolds are well known for their quality, performance, and fit. For a temporary quick fix, you could insert a bolt from the top side of the flange and put a nut on the bottom side. No way a bolt would fall out, even if half of the hole in the flange was missing. Just a thought.
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post #5 of 7 (permalink) Old 08-30-2015, 01:34 PM Thread Starter
 
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Quote:
Originally Posted by geeteeohguy View Post
The RA restorations manifolds are well known for their quality, performance, and fit. For a temporary quick fix, you could insert a bolt from the top side of the flange and put a nut on the bottom side. No way a bolt would fall out, even if half of the hole in the flange was missing. Just a thought.
I was thinking the same thing. finally got some time today so gonna get at it. I still like the idea of the r/a manifolds. Thanks for the input.
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post #6 of 7 (permalink) Old 08-30-2015, 03:25 PM Thread Starter
 
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that did the trick. just a temp fix . gonna order the ram air manifolds. thnks geeteeoh
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post #7 of 7 (permalink) Old 08-31-2015, 03:07 PM
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Woody, I once used that 'temporary fix' on my own '67....from about 1983 to 1990!!! Glad it worked out for you.....and again, GREAT SAVE on that beautiful '67!
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, LeMans & GTO Engine Tuning and High Performance

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