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426 Fire rings or copper gasket
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AC 7060 View Drop Down
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Joined: 06 Jul 2010
Points: 144 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AC 7060 Quote  Post ReplyReply Direct Link To This Post Topic: 426 Fire rings or copper gasket
    Posted: 21 Feb 2015 at 5:30pm
Stock head gasket is not holding any more I have a dry head should I just add fire rings or a copper head gasket or both and where is the best place to get them. Thanks for the help.
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mf440 View Drop Down
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Points: 17 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mf440 Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 2015 at 8:21pm
depends on how much boost you are making or plan on making. copper gasket and wire rings are good for 70 lbs boost and i have run 100 lbs boost with .105 fire rings machined in sleeves and copper gasket. Robert Alves made my copper gasket 
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Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 2015 at 9:41pm
Steel fire rings. I make my own.  MACK
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Points: 574 		Post Options Post Options   Thanks (0) Thanks(0)   Quote O.P.S. Heads Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 2015 at 11:17pm
If you want it fixed forever machine your sleeves and use .105 diameter wire rings with a copper gasket. The gasket bores should be the correct diameter so the block and gasket together will back up the wire rings. If you don't want to machine the sleeves Ed has some drop in fire rings you could use that will work too.

I think it has a lot more to do with horsepower than it does boost. You can make 300 HP @ 70 lbs. of boost or over 1000 @ 70 lbs. of boost. Just depends of the combination of things. The head gasket will work harder at the higher HP level. No matter it you do the .105 rings and everything fits properly you will have no troubles.

Edited by O.P.S. Heads - 22 Feb 2015 at 11:19pm
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Joined: 13 Sep 2009
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Points: 4917 		Post Options Post Options   Thanks (0) Thanks(0)   Quote injpumpEd Quote  Post ReplyReply Direct Link To This Post Posted: 23 Feb 2015 at 8:38am
Yes, I have the size rings for a drop on, as well as the .105" rings for sleeve machining. This is obviously the more durable route to go. But not really practical for a 300hp farm class puller. The drop on rings are good to about 3-400 hp. 
210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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Points: 574 		Post Options Post Options   Thanks (0) Thanks(0)   Quote O.P.S. Heads Quote  Post ReplyReply Direct Link To This Post Posted: 23 Feb 2015 at 11:58am
Check the obvious stuff too. Be sure the head is flat no matter what gasket you choose to use.
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