Re: Steel shim head gasket, retorque?
[Re: AutoEngineer]
#950069
03/13/11 06:40 PM
03/13/11 06:40 PM
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Joined: Jan 2003
Posts: 1,235
TN
65racer
2009 IHRA World Champion
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2009 IHRA World Champion
Joined: Jan 2003
Posts: 1,235
TN
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I always went thru the trouble to go back and retorque
mine after the engine had been freshely fired up, and never had any of the fasteners to move after initial torque, but for the past few seasons I have been having trouble with them staying sealed up,
after seasons end when the engine came apart, they would always be signs of leakage, no matter what I did, or how I prepped them, never had the problem until I started squeezing the engine more, just put a new engine in the car, and went to the thicker felpro gaskets, and just cut the block and heads some more to take up the area of the thicker gaskets, I was getting tired of taking the engine apart, and seeing black marks on the head gaskets, from leakage.
Dave
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Re: Steel shim head gasket, retorque?
[Re: 65racer]
#950070
03/14/11 02:47 AM
03/14/11 02:47 AM
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Joined: Aug 2003
Posts: 43,126
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,126
Bend,OR USA
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Quote:
I always went thru the trouble to go back and retorque
mine after the engine had been freshely fired up, and never had any of the fasteners to move after initial torque, but for the past few seasons I have been having trouble with them staying sealed up,
after seasons end when the engine came apart, they would always be signs of leakage, no matter what I did, or how I prepped them, never had the problem until I started squeezing the engine more, just put a new engine in the car, and went to the thicker felpro gaskets, and just cut the block and heads some more to take up the area of the thicker gaskets, I was getting tired of taking the engine apart, and seeing black marks on the head gaskets, from leakage.
Dave
I used steel shims on my M.W. stocker for a lot of years when I ran it in NHRA stock, .022 thick. I've seen a lot of them have black marks bewteeen the cylinders and none of them leak bad enough to see it on a leakdown gauge  Same thing on iron head 440 with the thinner .017 thick steel shim head gaskests  I have blown a Fel Pro composition gasket that took the head and the block out(cut it like a cutting torch would) when it blew 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Steel shim head gasket, retorque?
[Re: quickd100]
#950072
03/14/11 09:53 AM
03/14/11 09:53 AM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
I've never retorqued a steel shim gasket and never had one blow out on me. Dave
 what he said
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Re: Steel shim head gasket, retorque?
[Re: quickd100]
#950073
03/14/11 03:15 PM
03/14/11 03:15 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
I've never retorqued a steel shim gasket and never had one blow out on me. Dave
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Re: Steel shim head gasket, retorque?
[Re: Mike Swann]
#950077
03/15/11 12:37 AM
03/15/11 12:37 AM
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Joined: Aug 2003
Posts: 43,126
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,126
Bend,OR USA
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I've used Copper coat, silver paint, single and 3 or 4 layers and I've put them on dry I've never blew one out I do use three different torque steps like 25, 50 and then 65 ft lbs starting on the left head first, old superstition from way back, you don't really want to know why  
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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