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View Full Version : best head gasket for 91 tsi

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Swifty1638
04-09-2007, 06:20 PM
I was running a stock oem coppersprayed hg, but since I did my valvesprings/retainers, I slapped on a cometic hp headgasket. I also torqued the arp's to 100 ft. lbs. Don't want it lifting, or having any gaps.

-A. Swift
kennydawgg
04-09-2007, 11:32 PM
cool, we should be down on saturday to pick one up
v8klla
04-10-2007, 10:52 AM
Sounds good!

Chris
niterydr
04-10-2007, 11:14 AM
cometic

Fail.
He needs a stock headgasket.


MD183808 List price $55.25
Mitsustyle.com price: $44.20

Can someone please explain to me why a STOCK car needs a copper or a MLS gasket? It comes factory with a composite. Without changing the RA value of the head surface, he is most likely shooting himself in the foot.
I've seen composite headgaskets hold north of 500whp w/o issues.
Kracka
04-10-2007, 11:31 AM
I'm going to say stock Mitsu headgasket with ARP headstuds, copper spray it if you feel saucy.
kennydawgg
04-10-2007, 12:32 PM
the head is getting machined so a thicker one is probably needed, the extra 20 bucks is worth not tearing it apart again when more mods inevitably get added
v8klla
04-10-2007, 12:48 PM
the head is getting machined so a thicker one is probably needed, the extra 20 bucks is worth not tearing it apart again when more mods inevitably get added

Yep once you start it's hard to stop lol

Chris
niterydr
04-10-2007, 12:51 PM
the head is getting machined so a thicker one is probably needed, the extra 20 bucks is worth not tearing it apart again when more mods inevitably get added

I would just simply suggest that you tell the machine shop what headgasket that you are going with. This is to insure they put the proper RA value on the head deck so the gasket will seal properly. Cometic recommends less than 50.
The slight bump in compression from the massive 7.8:1 factory compression ratio shouldn't nuke your motor. I would be more concerned as to why you blew a headgasket in the first place.
JET
04-10-2007, 02:03 PM
I am running a stocker with copper spray, it's even a Hyundai! It has held 35 psi, so I would also just recommend a stocker.
carltalon
04-10-2007, 04:09 PM
The stock headgasket Might be your savior in the long run. I've blown mine with detination before. If the head gasket hadent let go Id probly have tosted some pistons or damaged some valves. The cometic HP will hold more then the stocker and let engine Damage occore. I consider mine a fuse. Id rather replace a headgasket then a motor.