steel shim headgaskets,do use sealer? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 01-08-2011, 11:35 AM
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steel shim headgaskets,do use sealer?

I'm installing new AFR heads on my build and am using felpro 1094 steel shim headgaskets.Do you use sealer on the steel headgaskets and if so what(copper coat)?I've heard of people using high tack gasket sealer on the head bolts,is this better than thread sealer(both are by permatex).Finally,do you run sealer in the coolant system to keep the heads from"weeping"?If so what kind? Thanks for any advice!

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Old 01-08-2011, 11:57 AM
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I just talked to the Fel-Pro (Sealed Power) tech line the other day about the same issue. He told me that the steel shim gaskets are coated and need no addtional sealer.


Then he said one could use a spray sealer as well if one wanted to.........



tom
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Old 01-08-2011, 11:59 AM
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What does Felpro say? I run Cometic MLS gaskets with Dart Pro 1 aluminum heads, no sealer, gasket surfaces or in the system. Sealer in the cooling system is a very last resort for leaks to me and many others. JMO.

Looks like my post hit the same time as Tom's.
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Old 01-08-2011, 12:07 PM
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What is your deck clearance?What type of reciprocating mass do you have?
015 thousanths is too tight for even the best set of internals unless your slugs are down in the block.
Copper coat only a steel head gasket .
Maybe you should post the general info on the engine, you know deck height /piston clearance, piston type,internals, stock forged etc.Not much to go on here.
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Old 01-08-2011, 12:47 PM
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The pistons are down in the hole.036.They are hyper. flat top with 5 ccs of relief in them.I'm thinking that would give me a .051 squish with a .015 head gasket.Heads are AFR eliminator with 180 runners and 65 cc chamber.Stock crank and rods(resized with ARP rod bolts).I,m figuring about 9.9 to 1 compression.Thanks
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Old 01-08-2011, 02:37 PM
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Cheap aluminum "Chrome" paint works great. Used to use the shim gaskets all the time on SBC/BBC's, back in the day. Used it for years. The aluminum pigment flows, then sets, when heated.
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Old 01-08-2011, 04:21 PM
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I always install mine as delivered, no problems yet.
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Old 01-08-2011, 04:37 PM
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thanks for the replies!
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Old 01-08-2011, 04:41 PM
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Used them right out of the package without any sealant. It wasn't as if the block wasn't within specs nor the heads weren't milled and flat.

The last time I believed I added a can of stop leak to the coolant when breaking in the cam during the initial warm up.

Steel shim gaskets... good items.
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Old 01-08-2011, 05:01 PM
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Regardless of material types, head gasket material is all much softer than the heads or block, and will seal without any sealer. You can use it, but it's sure not required.
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