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Old 11-19-1999, 01:14 AM   #1
Joel Gat, 1.8L
Scooby Specialist
 
Member#: 32
Join Date: Jun 1999
Post Headgaskets, anyone?

Hello,

I'm writing because I'm still working on identifying the complete head interchangeability throughout the Subaru EJ motor series. I think this research will help anyone determined on extracting the most power possible from their cars. Personally, I'm still debating whether to go with an EJ22 turbo block or one of the newer EJ25 blocks, and I'm still working on which heads to go with. Part of my decision obviously rests on knowing which heads fit on which engines.

So, to that end, I've examined the SOHC and DOHC heads and gaskets. I will be examining the EJ20 heads and gaskets in a week or so. The only thing I don't have access to is an EJ22 head or gasket. This is where you guys fit in. Dale from Teagues has very graciously offered to sell me a head gasket at cost so I can compare coolant passage size, location, bolt patterns, bore placement, gasket interchangeability, etc. My problem is that for the moment, I'm broke. I'm not allowed (fiancee) to spend any more money on car stuff for a little while. The head gaskets cost a measly $20 at Dale's cost.

Does anyone here with a turbo legacy want head gaskets? I have several ideas. First, and best, is if someone here wants a set. In that case, you could buy the set and Dale could e-mail me some pictures, a photocopy, and some specs, which would provide me with most of the information I want (he doesn't want to stock them since they'll end up sitting around for years possibly). He could then send you the head. The second idea was put forth by Bill Robinson. He suggested that if no one wants to buy the gaskets, he would send me $5, and if I could get 5 people do to that, I'd have the gaskets plus shipping covered. Anyone interested?

Now, the benefit of this as it applies to you. When I finish my comparison, which will include verifying header compatibility and other such things, we'll know all the heads that are swappable. If, for example, Mike Shields is right, and the EJ25, EJ20, and EJ22 heads are all compatible (he says, but has not verified in person), then a SOHC legacy turbo could take an EJ20 DOHC turbo head. If you used a non-hydraulic head (97+), you would instantly make the engine suitible for producing power up to 7500 rpm (of course, if the engine is 5-8 years old, you'd want to at least rebalance the bottom end and replace the bearings). Plus those heads breath a lot better than the SOHC legacy turbo heads. So the research has some good benefit for y'all, too.

Anyway, lemme know if any of you are interested in purchasing the head gaskets or contributing to a purchase. I'd post this on the general board, but I figured the number of people who will actually replace their EJ25s with EJ22s is pretty small, so most of those folks won't care about this - they just want to know about EJ20 heads on their EJ25s (which I'll know in a couple weeks).

------------------
Joel Gat, 1.8L
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Old 11-19-1999, 07:30 AM   #2
Submerk
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Join Date: Jul 1999
Location: Seattle, WA, USA
Post

What kind of head gasket? Is it just stock or copper one?
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Old 11-19-1999, 05:53 PM   #3
Joel Gat, 1.8L
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Join Date: Jun 1999
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Hello,

Since I want to get the most accurate picture, I want to use the stock gasket. I don't know what material it is on the legacy turbo - I do know that on DOHC RS 2.5s, the head gasket is metal. SOHC RSs get graphite/metal composite gaskets. Anyway, lemme know.

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Joel Gat, 1.8L
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Old 11-19-1999, 10:05 PM   #4
Submerk
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I don't think so. I have Legacy turbo, so I don't need it. I thought it likes high performance head gasket.
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