aluminum for block-off plate?

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May 17, 2004 | 08:46 PM

patSS/00

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From: AZ

aluminum for block-off plate?

Anyone know how hot the exhaust manifolds get? I need to know if it's OK to use aluminum to make block-off plates for the AIR holes in the manifolds. Aluminum melts at 1220 deg. F, can they get that hot?

May 17, 2004 | 09:20 PM

ACCELR8

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From: Brook Park, Ohio

Well, since you have aluminum heads, I would think you'd be O.K.

May 17, 2004 | 09:36 PM

LawmanSS

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I picked up a set of AIR blockoff plates from SJM---->

They're made of aluminum.

May 17, 2004 | 09:40 PM

Navy David SS

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I got my set from Thunder Racing >>>>> don't forget to get new gaskets.

David

May 17, 2004 | 09:40 PM

Ferocity02

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I made my own from stainless steel and they have worked well. Someone made some from super thin galvanized sheet metal and they worked. I drilled mine to 1/4", I thought that 3/16" was too small. Aluminum is fine.

EDIT: Oops, I was thinking restrictor plates...

Aluminum is still fine for block off plates, sheet metal isn't.

May 17, 2004 | 11:03 PM

patSS/00

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From: AZ

Quote:

Originally Posted by ACCELR8

Well, since you have aluminum heads, I would think you'd be O.K.

Heads have coolant flowing thru them. They don't make manifolds out of aluminum due to high temps (otherwise, think of the weight savings you could have).

May 18, 2004 | 12:06 AM

Ferocity02

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Our manifolds are lighter than any aluminum manifold you could ever buy....

Quote:

Originally Posted by patSS/00

Heads have coolant flowing thru them. They don't make manifolds out of aluminum due to high temps (otherwise, think of the weight savings you could have).