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How much do head gaskets compress? #1144904 12/27/11 12:31 AM 12/27/11 12:31 AM
Joined: Jan 2003 Posts: 549 Bristol, Va fasteddie OP mopar
fasteddie OP mopar Joined: Jan 2003 Posts: 549 Bristol, Va	Got a new set of the p4120094 head gaskets. They are supposed to be .024 to .028 installed,, but they are .041 in the box. Will they compress that much? They have a metal fire ring around the cyls. Also,, why a .004 difference in what they compress to? Is mopar perf. just guessing? 2003 Bristol Dragway Sportsman Champion 2016 Bristol Dragway Power Hour Champion

Re: How much do head gaskets compress? [Re: fasteddie] #1144905 12/27/11 12:55 AM 12/27/11 12:55 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Got a new set of the p4120094 head gaskets. They are supposed to be .024 to .028 installed,, but they are .041 in the box. Will they compress that much? They have a metal fire ring around the cyls. Also,, why a .004 difference in what they compress to? Is mopar perf. just guessing? They're labeled wrong... they will go about .002... the .024-.028 is the variance in the specs so they can be at either end of the spec and still be good

Re: How much do head gaskets compress? [Re: fasteddie] #1144906 12/27/11 04:25 AM 12/27/11 04:25 AM
Joined: Aug 2003 Posts: 43,237 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,237 Bend,OR USA	I know a engine builder that takes a piece of lead shot around .050 diameter, he punches a .060 or so hole in the head gasket where it can't leak and puts the lead shot there, installs the head and torques it down and then removes the head and measure the compressed shot to see how much it did compress The gasket is still usable so he does Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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