Re: Head gasket that does not brinell aluminum
[Re: hemienvy]
#2985466
11/15/21 03:22 PM
11/15/21 03:22 PM
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Joined: Jan 2010
Posts: 1,442 NW Chicago suburban area
Mopar Mitch
pro stock
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pro stock
Joined: Jan 2010
Posts: 1,442
NW Chicago suburban area
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HEMIENVY -- Where and how did you do your research? The 17059 (marine applications) and the 8519 (truck block) have simple flat folded over cylinder armors that should not brinell at all. The other two gaskets -- 1009 and 1039 -- are both "Performance" gaskets which have an internal pre-flattened soft wire ring with a stainless steel folded-over armor. The pre-flattening of the wire ring reduces any brinelling (as compared to earlier designs that were not pre-flattened), however, if it does have any, its actually better for combustion sealing, especially in higher CR applications.
I'm former Fel-Pro applications engineer and am well aware of the designs.
Mopar Mitch
"Road racers and autocrossers go in deeper and come out harder!"... and rain never stops us from having fun with our cars... in fact, it makes us better drivers!
Check out MOPAR ACTION MAGAZINE, August 2006 issue for feature article and specs on my autocross T/A!
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Re: Head gasket that does not brinell aluminum
[Re: lewtot184]
#2985771
11/16/21 02:19 PM
11/16/21 02:19 PM
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Joined: Jan 2003
Posts: 4,720 Moved to N.E. Tennessee
GomangoCuda
master
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master
Joined: Jan 2003
Posts: 4,720
Moved to N.E. Tennessee
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the alum the heads are cast from is soft. anything with a steel fire ring, wire or no wire, will mark the alum. the only material i can think of that may not mark the alum is dead soft copper. Mopar used to sell copper gaskets for the aluminum head Hemis. I am sure for this exact reason
In theory, there is no difference between theory and practice. In practice, there is.
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Re: Head gasket that does not brinell aluminum
[Re: hemienvy]
#2986298
11/18/21 01:32 AM
11/18/21 01:32 AM
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Joined: Jan 2003
Posts: 31,034 Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,034
Oregon
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Well, I don't know what to say. It seems people have had problems.
Maybe the next question is which heads are soft aluminum ?
Still can't ignore the brinelling problems. Depends what you're trying to do. If the motor is going together for 100,000 miles then don't worry about it. On my dyno motors I only use MLS gaskets since that solves the problem. Why are you worried about brinelling anyway? Buy a set of Cometic gaskets and you won't have a problem.
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Re: Head gasket that does not brinell aluminum
[Re: hemienvy]
#2986417
11/18/21 01:28 PM
11/18/21 01:28 PM
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Joined: Oct 2005
Posts: 270 Anchorage, Alaska
metallicareload
enthusiast
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enthusiast
Joined: Oct 2005
Posts: 270
Anchorage, Alaska
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Well, I don't know what to say. It seems people have had problems.
Maybe the next question is which heads are soft aluminum ?
Still can't ignore the brinelling problems. Not Trick Flow heads I've been using Cometics with Trick-Flow heads for the last 5 years or so. The heads have been on and off twice in that time. After the first time I had the heads surfaced just enough to remove almost all the brinelling. This last time around I didn't worry about it, just used new gaskets and so far so good. A few runs at the drag strip, several auto-Xs, and 8,000+ street miles
440, 4-Speed, 3.54 1968, when Dinosaurs ruled the Earth
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