gasket mating surface damage
08-22-06, 09:21 PM
#1
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gasket mating surface damage
after using a steel wire brush on a drill to clean off the gasket on the intake manifolds, Ive noticed that there are now some gouges and pits on the surface where the gasket goes. With the gasket be able the seal even with these imperfections?
08-22-06, 10:02 PM
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i like to use a little bit of silicon, the thinking is that is helps seal up any really little potential leaks.
and back in the old days, that either let you reuse the paper gasket, or eliminate 90% of the scraping
and back in the old days, that either let you reuse the paper gasket, or eliminate 90% of the scraping
08-22-06, 11:29 PM
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Get some permatex gasket maker and add it to both sides of a NEW gasket, better safe than sorry, and the 5 bucks could potentially save u from taking off ur manifold again.
08-23-06, 01:50 AM
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clean the gasket mating surface with a flat sanding block and some 220 grit sandpaper and as Karack said, use RTV sealant on both sides of a new gasket.
08-23-06, 02:16 AM
#6
i probably wouldn't sand it down any further, the surface has already been knocked down so sanding it would create even more of an uneven surface, that's just my thought on it anyways. the damage has been done, try not to make it any worse. 
the only true way to fix it would be to remove the manifold from the block and remove the studs from the surface and have it planed which is a bit extreme when a little RTV works just fine, note 'little' in italics, i put it in italics because i mean a LITTLE!.
the only true way to fix it would be to remove the manifold from the block and remove the studs from the surface and have it planed which is a bit extreme when a little RTV works just fine, note 'little' in italics, i put it in italics because i mean a LITTLE!.
Last edited by RotaryEvolution; 08-23-06 at 02:20 AM.
08-23-06, 08:18 AM
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I've found that those black spun-plastic wheels for stripping paint, that fit in a drill ,work really well for taking off even the most tenacious gasket material, and it does no harm whatsoever to metal surfaces, not even to aluminum. They're about $6 at Home Depot. I used it on my UIM and LIM and it itook about 10 minutes on the whole job. The mating surfaces came out like new.
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08-23-06, 11:50 PM
#9
Originally Posted by Tanjo
3M makes little discs called Roloc, they are awesome for cleaning gaskets off. its all I use.
