exhaust manifold...again.
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Laughing Gas
Joined: Jan 2006
Posts: 1,098
Likes: 11
From: Minnesota
exhaust manifold...again.
On my 98 F-150...4.6. About 5 years ago busted lower back stud, pulled it all apart, replaced busted stud, all new nuts, new gasket, reused old manifold. Pinholes have been showing up after 5 years, so I pulled it apart, new manifiold...(Dorman...yeah..I know...), new gasket, new nuts, new EGR tube. All put together with anti-seize. Starts her up....ticky tick bottom rear stud area. Tighten it down some more...all is good. Go for a 10 mile ride, all is quiet. Jump in this morning start it up....the dreaded tick. Crawl underneath....flange on that lower bottom stud is cracked.....
. Do the old steel wool covered in boiler repair compound, all is quiet. All that nasty work and I have a patch on it....
Before I shell out another $100 bucks on a manifold, does anyone have any insight to lend on this? I pulled down everything evenly in 3 steps to try to avoid this. The thing that kind of bothers me was how thin the gasket was to begin with.....maybe double the gasket on that cylinder...i just don't know.....Thanks.....Jeff.
. Do the old steel wool covered in boiler repair compound, all is quiet. All that nasty work and I have a patch on it....Before I shell out another $100 bucks on a manifold, does anyone have any insight to lend on this? I pulled down everything evenly in 3 steps to try to avoid this. The thing that kind of bothers me was how thin the gasket was to begin with.....maybe double the gasket on that cylinder...i just don't know.....Thanks.....Jeff.
Thread Starter
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Laughing Gas
Joined: Jan 2006
Posts: 1,098
Likes: 11
From: Minnesota
They make this stuff for repair of boilers....it's like a putty. You can buy it now at like O'Reilly's.....it's on the rack with all the gasket making compounds. It's like $7.00 bucks in a little plastic container....will say "for manifolds"....high temps...stuff like that. Lets say you have a crack or a pinhole. You brush it off the best you can, then dampen it. Then rather than smear it on, I have found if you put the stuff on a piece of steel wool then press that into the area you are sealing. I dunno'...I have had really good luck sealing stuff up and it stays sealed...When I finally had time to get a new manifold I had like 8 or 9 places i had done that and none were leaking...The steel wool really makes a good patch with that stuff on it...be sure to follow the directions on the compound....don't rush it.....good luck..
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