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Whent to my friend this evening with my 2 short block halfs, to make another swap test just to make sure everything fits...

Conclusion :
EJ20T heads does fit well on the EJ22T block.

EJ22T Intake Manifold does not fit at all on the EJ20T heads.

EJ20T Intake Manifold fit and bolts perfectly on the EJ20T Heads on the EJ22T block

Pictures :
All the pics in hires (click the "get originaly uploaded photo" link under each picture)
http://public.fotki.com/morgie/morgie/o ... _on_ej22t/


Ej22T Intake gasket over Ej20T heads... You can see that nothing fit.. neither the side bolts, nor the center bolts... even the hole down fit.



Ej22T Intake manifold over Ej20T heads.. the side holes dont match.



On the other side, you can see that the manifold is about 1"1/2 too short



But, with the Ej20T intake, it fits and bolts perfect.





the Ej20T and Ej22T shortblock seems to be exactly the same in therms of dimentions. All the bolts holes on the front are the same too. I guess subaru produced only one mould and re-used it to produce the different "sauces" of the ej engine.

Morgie: I would paypal you the money to buy an EJ25 SOHC intake gasket from the dealer if you could check it against the ej22t heads if its not too much....


You need to edit your post specifially

"EJ22T Intake Manifold does fit at all on the EJ20T heads."

EJ22T Intake Manifold does not fit at all on the EJ20T heads.

oups, thanx, i corrected it

I'll stop at my dealer tomorrow to compare the 2 gaskets. They should have that in stock so it will cost nothing at all

Will you switch to coil-on-plugs or just custom mount your coilpack somewhere in the engine bay with that intake?

Brat4by4: When I was planning to do this I wanted to keep the centrally mounted coil pack and have Magnecore create some custom wires. That way I could also still use an aftermarket ignitor and diamond coil pack.

Morgie: Can you compare all three? EJ25 EJ20t and EJ22t? Then we can nail this all down once and for all. EJ25 DOHC and SOHC would also be cool.

It's pretty easy to make custom wires... you can reuse your stock boots and connectors in most cases.

Gasket bonanza ! hehe

1 - Ej22T and Ej22Na shares the same gasket

2 - Ej22T and Ej25 SOHC shares the same "overall disposition" of the bolt holes, but the holes dont match. Also, the intake port holes are bigger on the 2.5l (the same size as on the DOHC ones). The 2.5l gasket is wider than the ej22T

3 - EJ25 DOHC gasket looks almost the same as the EJ20T one of my friend. Would say i'm sure at 99% it's the same gasket.

4 - EJ25 DOHC and WRX Ej20T Gaskets are .. ALMOST the same. Bolts and intake holes are at the same place, the same size. But the tinny linup-holes are not at the same place.


Finally, I asked the prices of the EJ257 (2.5l STI) pistons... : 650$ CAD Each !!! compared to 80$ CAD for the EJ22T ones...

"tinny linup-holes are not at the same place."

Can you explain this more?

there is 2 spring pins in the heads that serves as guides to position properly the gasket on the heads... so it wont move while you install the intake manifold on them. Well, the holes for those spring-pins on the 2 gaskets are not at the same place.

I did a super mega exact drawing of that..

Assume the 2 gaskets are the same size. The holes where the arrow points are the ones i'm talking about.

http://themorg.dyndns.org/misc/gasket.GIF
2.5l = DOHC, 2.0l = the STI or WRX 96 head of my friend.

i just realise... you can see the spring pins there.. look at the lower part of the gasket on the picture.. you can see them



hirez : copy paste the url in internet explorer.
http://images4.fotki.com/v45/free/f2ee4 ... img-or.jpg

The EJ22 does not have these little spring pins......I sorta think the EJ22T doesn't as well.


BTW....Love the super exact drawing morgie

The 22t does not have them.

mk

Legacy777 wrote:The EJ22 does not have these little spring pins......I sorta think the EJ22T doesn't as well.


BTW....Love the super exact drawing morgie

You're right for the pins, since the EJ22 and EJ22T shares the same exact intake gasket I think they also shares the same heads.


didn't you know i'm a professionnal artist / drawer ?

morgie wrote:didn't you know i'm a professionnal artist / drawer ?

How much for a professional portrait

EJ20T heads and the EJ20T mainfold bolt up which means we'd have the higher rev limit we'd get from the DOHC, the fuel system that can be easily upgraded, and a block that can handle a sh*t load of power?! This sounds like an awesome setup.

Do the heads flow just as well, well you know what I mean, as the 22T heads.
Also, would the integrity of the 20T head gasket in this setup equal that of the 22T's gasket on a stock setup?

FrmRgz2Rchz wrote:Do the heads flow just as well, well you know what I mean, as the 22T heads.
Also, would the integrity of the 20T head gasket in this setup equal that of the 22T's gasket on a stock setup?

In fact, you should use the 22T head gasket with the 20T heads. But you get a crappy ~7.5:1 CR .


I'm buying for 1500$ CAN an SDS + EJ20G engine + EJ20T shortblock... and will see what i takes on it.. i would have loved to get the EJ20T intake... err.. nyway, that's a pretty good deal for the price.


Legacy777 : If you have to ask, then you can't afford it ! hehe

Couldn't I make up for the low compression ratio by turning up the boost to say....30 pounds?

Sure, but it'd be a slug off boost, and a turbo that can pump 30 psi'll probably be off boost for an annoyingly long time when accelerating from a stop.

Like a fully upgraded Skyline GTR in Gran Turismo 1 .. hehe


I wonder how bad it will be at 7.5:1 ...

Nitrous is one expensive option to overcome any off-boost sluggishness.

What is this talk of compression ratios? Your going to be inside the engine anyways, why not do it right the first time and get pistons to match the head? Id assume you at least plan to replace the rings so the pistons are going to be out anyways.

Because i'm a poor lonesome cowboy

I partially understand, but your 1000$ US piston set is not really the price you could get it for. I bet a set of 700 dollar pistons plus shipping from a Legacycentral users house would help....

are you planning to get such pistons ? cuz a "group buy" is often cheaper.. i may know 2 other guys that could be interested too.

And for the piston being removed... maybe this picture will give you a hint

Mecanic ? I eat that for lunch ! hehe
http://themorg.dyndns.org/misc/mange2.jpg

Hmm, I was going to get a set and Nate from S-squared was also planning to get some. He has a hook up. What bore would you guys want?