What head gasket are you using???

[Clever Gs-t]

I'm in the final stages of my engine build. I was wanting to know what brand of headgasket has been working for high boost applications? I will be using a head stud combination with the higher grade head gasket.
Thanks

 

[talonalex92]

MLS is a good option. Has the block been decked or anything? If so go with MLS. I personally only use mitsu gasgets, but felpro and cometic make them as well. If the block and head have not been surfaced dont bother with an mls, a standard composite gasket will do you just fine. Felpro would be my first choice on that.

 

[BogusSVO]

What boost level?

What is your goal?

How has the block deck and the head surface been prepped?

Some on the board are running 30+ psi with a fel-pro composite and arp head studs.

 

[Clever Gs-t]

I guess I could have been a lil more forthcoming on my engine build.
It is a 4g64 from a 94 Galant.
87mm Wiseco Evo HD's
The block has been decked and the head resurfaced
I will be running the 7 bolt head and Evo 3 intake
I hope to be running in the upper 20psi of boost.
Hope this helps.

 

[LOVEBOOOST]

OEM MLS but only if u had ## block and head cleaned and resurfaced.

 

[Clever Gs-t]

Does anyone have the part # for the oem MLS gasket?

 

[J_HEATH]

I'm running cometic MLS. I have a built block and rebuilt head which all have been resurfaced and decked as well as sanded to almost mirror finish. I run 28psi no issues. Basic ARP head studs.

 

[BogusSVO]

Ok, Now do you know what kid of equipment will be used to deck the block and mill the head?

Are you for certin, that the machine shop that will perform the work will provide the proper surface finish?

http://www.dsmtuners.com/forums/cyl...0613-why-not-let-your-head-belt-surfaced.html

http://www.dsmtuners.com/forums/new...face-4g63t-cylinder-head-mls-head-gasket.html

http://www.dsmtuners.com/forums/cyl...-deck-4g63-cast-iron-block.html#post152790451

 

[Clever Gs-t]

Does polishing the mating surfaces really help??

 

[BogusSVO]

You do not "polish" the mating surfaces, they have to be machined.

 

[Junfan]

If the block is not machine perfect and the head has not been decked recently the OEM Mitsu composite gasket and ARP studs seem to do pretty well. Many people have good success and the cars are reliable if prepped and installed properly. MLS is better but I would be scared to do an MLS on older surfaces.

Best results I assume would be fresh machining of surfaces, MLS and new ARPs. Depending on goals maybe L19 ARPs.

 

[talonalex92]

MD 349347
is what I come up with.

 

[Clever Gs-t]

I thought that same thing. But it threw me off when J_HEATH said his block was sanded to an almost mirror finish.

 

[BogusSVO]

I thought that same thing. But it threw me off when J_HEATH said his block was sanded to an almost mirror finish.

Go read the links I posted up in #8

You will then see what we are talking about.

 

[Clever Gs-t]

Thanks for the input. I will read the links you posted.

 

[1fastlaser]

Key word. He is 87mm.

You have limited options but here they are.

Felpro mls 87mm
Cometic mls 87mm
Factory oem composite gasket an depending on what you are trying to do will determine if you should o ring the head or not

There is also the sce ics Titan copper
Power enterprise
Hks

The composite with a o ringed head is a pretty much sure thing. Felpro mls and cometic have had issues and the block and head have to be 50ra or lower and flat! I ran a straight felpro composite into the 10s at over 135mph on straight 93 with a gt42. It never gave me a issue until it finally got a little seepage one night crusing normal 4 years of abuse in.

 

[Clever Gs-t]

That is great information. But do you have any part numbers? Or can you suggest a distributer that can help me acquire these MLS gaskets for my piston bore size?

 

[LOVEBOOOST]

That is great information. But do you have any part numbers? Or can you suggest a distributer that can help me acquire these MLS gaskets for my piston bore size?

just pm some vendors and talk to them about it. They can help you out alot. Pm stm or map.

 

[Clever Gs-t]

What do you guys think of this distributer and part?
EXTREME PSI : Your #1 Source for In Stock Performance Parts

 

[Cornfed4G64]

EXTREME PSI : Your #1 Source for In Stock Performance Parts

Plus you get an extra $10 bucks off if you spend more than $250

 

[1fastlaser]

Jnz tuning is we're I just ordered a oem g4cs composite head gasket for my o ringed head.

 

[92AWDHX40]

Felpro with arps 25 psi all day, just did another build now using another felpro.

 

[MY1GDSM]

Some on the board are running 30+ psi with a fel-pro composite and arp head studs.

This ^


I have been on a Stock composite H/g copper sprayed and Standard Arp's for about 4-5ish years

Regardless of what H/g you chose OP make sure that the machines can get the Lowest RA possible and make sure your surfaces are Perfectly flat or it won't matter what you use.

 

[camfast]

Proven combo is oem composite with o-ring head and standard arp studs. This should be able to support 35+ psi.

 

[MY1GDSM]

Not saying that Standard Arp's can't hold... .

But if intent on running 35+ psi I suggest investing in higher grade A1/L19 studs if anything for the piece of mind. Really anyone getting to that power level shouldn't really be having to ask Imo what they should be running. Also all this has been discussed many times in fact a couple threads in last couple weeks comes to mind.