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Old 10-02-2001, 03:21 AM   #1
Eric SS
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Location: 2013 335i, 2011 G37 coupe
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2000 2.5RS w/ EJ22T
swap and N20. gone. : (

Default EJ22T with 2.5 SOHc heads. which head gasket?

as it says, which head gasket do I use when using 2.5 SOHC heads on an EJ22T engine? I need to be 100% sure on this. thanks

eric
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Old 10-02-2001, 04:01 AM   #2
8Complex

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Can you return the ones if they don't work? I would get a set of EJ22T's, EJ25 SOHC's, and a set of EJ25 DOHC's. Whatever fits the best, keep.

FYI, I've heard that the EJ25 DOHC (MY98) head gaskets are built a bit tougher then the SOHC (MY99-01) ones. Something about an extra layer of metal in the middle or something...
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Old 10-02-2001, 08:10 AM   #3
bill harvey
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don't use the dohc ones because they are the ones that fail all the time i used the sohc 2.5 ones
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Old 10-02-2001, 02:47 PM   #4
8Complex

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bill harvey - How do they fail? (curious) Just wondering if they puncture the wall real easy or whatever.

Hey Imprezinator - You might consider getting that block o-ringed if you're pushing a lot of boost into it, too.
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Old 10-02-2001, 02:56 PM   #5
Scoobyslack1
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How much have you guys paid for heads?
I would like to put them on my block some day when I can get $$$ for it. There aren't any extra parts needed to put them on is there?
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Old 10-02-2001, 07:13 PM   #6
bill harvey
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they fail in N/A form they aren't designed that well if you look at the gasket there is a very thin part ofcorse i am at home right now and the only head gaskets i have hear are in my car but if i can think of it i will grab a set and describe them better or even take a pic.
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Old 10-02-2001, 11:26 PM   #7
Really_Soaked
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Give the guys at Cobb a call, they'll probably be able to help you.


http://www.cobbtuning.com
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Old 10-03-2001, 04:35 AM   #8
8Complex

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bill harvey - Well, reason I ask about it is that I have a friend who has /will have a Cobb built car that will be pushing about 500+ hp, and he built it with stock MY98 head gaskets. *shrug*
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Old 10-03-2001, 08:17 AM   #9
bill harvey
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is he using the three layer one? we have seen them fail a few different ways but because of the material they are made of it is hard to tell why they went. i just saw a set that looked like the material melted causing a low spot on the gasket and the gasket let go and the block ended up craking in one of the cylinders. if you go to the new england forum you can find a post from Pat olson he is on his second set in less than a year and he doesn't have a turbo or sc..
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Old 10-03-2001, 11:27 AM   #10
GTBGUY
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Use the EJ25 SOHC head gaskets, these will line up directly w/o problems. The EJ22T headgaskets are too small and interfer with the quench area on the EJ25 SOHC heads.
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Old 10-03-2001, 11:40 AM   #11
mcgyver
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As I already told Bill, my second set is beginning to let go.

Subaru replaced mine in March @ 42k miles back when I was NA. Now it's got 47k miles, about 3k Turbo'd. The're not blown, but definately leaking-by when abused.

I'm just concerned about thickness, the DOHC 3-layer is quite thicker than the SOHC 1-layer. The question is though, is it enough to throw-off cam timing?

The DOHC 3-layer has a metal plate in the center and a flimsy, black, paper-thin metal layer on either side. That makes 4 surfaces to seal; Block/thin gasket/Metal Plate/thin gasket/Head

The SOHC single-layer, looks like most other head gaskets, possibly metal & graphite of some sort. But looks capable of being squished down for a better seal. Plus it only seals 2 surfaces; Block/Head

-Adam
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