Aluminum Heads - Proper Gasket - Team Camaro Tech
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post #1 of 6 (permalink) Old Feb 3rd, 07, 07:55 PM Thread Starter
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Aluminum Heads - Proper Gasket

Is there a specific type of gasket to use with aluminum heads and cast iron block (copper)? My question is in regard to any chemical reaction due to electrical current or dissimilar metals or both that could cause leaks.

Thanks
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post #2 of 6 (permalink) Old Feb 3rd, 07, 08:05 PM
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Bill
 
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Re: Aluminum Heads - Proper Gasket

cc,
The dissimilar metals are not a problem as long as the proper coolant is used.

The head gaskets usually are specified by the cylinder head manufacturer. There are different types depending on the conditions the engine will see. There are the normal composition gaskets, copper, multilayer steel (MLS) and probably some others.

Bill Koustenis
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post #3 of 6 (permalink) Old Feb 3rd, 07, 10:38 PM
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Steve
 
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Re: Aluminum Heads - Proper Gasket

Use a gasket with a pre-flattened steel wire ring.
Regular head gaskets for cast iron head & blocks will make an impression in aluminum and will require machining (milling/decking) when reassembling at a later date.

For example, BBC with alumi heads.. http://store.summitracing.com/partdetail.asp?part=FPP%2D1027&autoview=sku

Don't worry about electolysis.

Nov 68 Van Nuys. 327 floor-shift-auto, Frost Green and not much else when new.

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post #4 of 6 (permalink) Old Feb 4th, 07, 06:52 AM
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Don
 
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Re: Aluminum Heads - Proper Gasket

Quote:
Originally Posted by BlackoutSteve View Post
Use a gasket with a pre-flattened steel wire ring.
Regular head gaskets for cast iron head & blocks will make an impression in aluminum and will require machining (milling/decking) when reassembling at a later date.

For example, BBC with alumi heads.. http://store.summitracing.com/partde...7&autoview=sku

Don't worry about electolysis.
Steve, are you saying the coated thin steel shim .015-.017 gasket is ok to use on alloy heads? I am using the GM graphite with flattened wire ring but look to increase compression.

Don
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968

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post #5 of 6 (permalink) Old Feb 4th, 07, 07:19 AM
 
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Re: Aluminum Heads - Proper Gasket

Fel-pro has said it is OK to use their SB #1094, .015" thick, rubber coated steel shims with aluminum heads.

pdq67



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post #6 of 6 (permalink) Old Feb 4th, 07, 09:15 AM
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Re: Aluminum Heads - Proper Gasket

Quote:
Originally Posted by pdq67 View Post
Fel-pro has said it is OK to use their SB #1094, .015" thick, rubber coated steel shims with aluminum heads.

pdq67
Thanks again, Then It will be done.

Don
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968

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