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Reuse head gasket? #3048780
06/08/22 12:23 AM
06/08/22 12:23 AM
Joined: Dec 2010
Posts: 392
Mississippi
lahatte Offline OP
enthusiast
lahatte  Offline OP
enthusiast

Joined: Dec 2010
Posts: 392
Mississippi
A mechanic friend of mine told me that since I haven't run my engine since assembly I can remove the head and reuse the head gasket. The gasket is Mopar Performance P4349559.

Anyone agree with that? I feel like it might not seal well since it has already been compressed. But I really don't want to have to spend another $100 if I don't have to.

Thanks.

Re: Reuse head gasket? [Re: lahatte] #3048781
06/08/22 12:59 AM
06/08/22 12:59 AM
Joined: Jun 2013
Posts: 847
Keizer, Oregon U.S.A.
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elmor353 Offline
super stock
elmor353  Offline
super stock
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Joined: Jun 2013
Posts: 847
Keizer, Oregon U.S.A.
Some might say you can but, I would be a little gun shy to do so. Are you willing to take the chance?

Re: Reuse head gasket? [Re: elmor353] #3048782
06/08/22 01:04 AM
06/08/22 01:04 AM
Joined: Feb 2010
Posts: 18,284
Granite Bay CA
Kern Dog Offline
I Live Here
Kern Dog  Offline
I Live Here

Joined: Feb 2010
Posts: 18,284
Granite Bay CA
I think that it depends on the gasket but I tend to agree that it should be fine. If you're running sky high compression, turbo, nitrous or a blower, I'd just get new ones. Otherwise, I think it is worth the small risk if it is a Fel Pro blue style.

Re: Reuse head gasket? [Re: lahatte] #3048783
06/08/22 01:58 AM
06/08/22 01:58 AM
Joined: Aug 2003
Posts: 40,855
Bend,OR USA
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Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
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Joined: Aug 2003
Posts: 40,855
Bend,OR USA
I'm going to ASSUME that gasket is a composite gasket, if so, reuse it without worrying twocents
I've been building and racing Mopars, early hemi, SB and BB since 1964 and building my own motors and 100s of customer motors since 1971.
I've experimented on my own motors on reusing the head gaskets on both BB and 426 Hemi that have been run as well as those new motors that had set for a long period of time and I removed both heads to make sure there was no rust or damage on the fresh honed cylinder walls before starting them up to break them in. wrench up
I saw Sox and Martin engine builder, Mr. King, reuse the same head gaskets at the 1974 Winter Nationals and I got to talk to him a little bit about that and he said as long as their is no damage to the gaskets, block or heads he has reused them several times with no bad results work scope up
Those guys made a hoop of power and RPM the dog snot out of those SS cross ram hemi motors work
Make sure and keep the head gasket head surface against the same head, don't flop them or switch sides tsk twocents

Last edited by Cab_Burge; 06/08/22 02:00 AM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Reuse head gasket? [Re: Cab_Burge] #3048795
06/08/22 06:59 AM
06/08/22 06:59 AM
Joined: Mar 2006
Posts: 9,252
MI, usa
dvw Offline
master
dvw  Offline
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Joined: Mar 2006
Posts: 9,252
MI, usa
I've reused them with no ill effect. My current 15-1 motor had the heads back off twice after they were torqued.
Doug

Re: Reuse head gasket? [Re: dvw] #3048823
06/08/22 08:54 AM
06/08/22 08:54 AM
Joined: May 2019
Posts: 4,991
nowhere
S
Sniper Offline
master
Sniper  Offline
master
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Joined: May 2019
Posts: 4,991
nowhere
I've run and reused composite head gaskets. Tried that once with the old steel shim type (OEM BB ones) ended up blowing one.

Copper head gaskets can usually be annealed and reused, which is probably what Sox and Martin was running.

My flathead ran an embossed copper head gasket, but they are no longer available, except NOS.

Re: Reuse head gasket? [Re: Sniper] #3048841
06/08/22 09:44 AM
06/08/22 09:44 AM
Joined: Oct 2005
Posts: 4,729
WI
Dcuda69 Offline
master
Dcuda69  Offline
master

Joined: Oct 2005
Posts: 4,729
WI
I had to pull my motor apart after losing a couple cam lobes. Reused the head gaskets......it's been fine for years now. 10.2:1 470" w/Felpro gaskets







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