EJ22T w/25 SOHC heads and turbo.

legacymax · Post by **legacymax** » Wed Nov 02, 2005 7:03 am

My question is for anyone who has made this ej22 w/25sohc frankenstien engine. I was wondering if you can use the stock turbo set up, not a custom turbo kit, with these heads? thanks
-max

vrg3 · Post by **vrg3** » Wed Nov 02, 2005 3:19 pm

Don't the EJ25 SOHC heads have single-port exhaust flanges? If they do, then the factory turbo exhaust manifolds won't bolt up.

Post by **Legacy777** » Wed Nov 02, 2005 6:13 pm

No, all the EJ25 heads had the dual port exhaust flanges.

legacymax · Post by **legacymax** » Thu Nov 03, 2005 8:56 am

they used single ports on the late 2.2s and the EZ30 heads( and all EA stuff) but not the 2.5Ls.
-max

Matt Monson · Post by **Matt Monson** » Thu Nov 03, 2005 10:37 pm

Max,
The problem with that is the coolant and the oil for the turbo. I will have to look and see if there are bosses there that can be tapped. I know there are on the DOHC heads...

dzx · Post by **dzx** » Thu Nov 03, 2005 11:10 pm

Isn't that what mark Ringleman or is running in his impreza L?

Matt Monson · Post by **Matt Monson** » Fri Nov 04, 2005 12:49 am

Ringelman runs a custom turbo setup, as does Xephyr, who now uses those heads...

dzx · Post by **dzx** » Fri Nov 04, 2005 3:01 am

Duh, i forgot about that.

NICO · Post by **NICO** » Sat Nov 05, 2005 9:02 am

what is the best head combo with out haveing to do alot of custom work and keep it a every day car

Penguin · Post by **Penguin** » Mon Nov 07, 2005 6:58 am

I am building a ej22t/w 2.5dohc heads. Oil and water won't be a problem, i mean only a little moding for oil(there is an pluged oil out near the back of the engine) and the water jackets almost lineup but still should flow good.

Not sure about much else.......
but i have figured that much out.

legacymax · Post by **legacymax** » Mon Nov 07, 2005 7:23 am

The easiest is probably just the EJ22t w/ wrx heads because they already have the coolant lines. How about setting up a seperate oil system for the turbo? And I am mainly worried about how far the cam sticks the back and would interfere with where the turbo sits in the stock setup.
-max

gt2.5turbo · Post by **gt2.5turbo** » Mon Nov 07, 2005 7:55 am

i think that some of the companies that sell turbo kits for 2.5na motors actually have a different valve cover that has a oil line tapped into it for the turbo. You might try talking to one of them and see if you couldnt just buy the cover from them.....

NICO · Post by **NICO** » Tue Nov 08, 2005 7:29 am

north american subaru cars.

1. 2.0l wrx heads
2. 2.5l wrx heads
3. 2.5l sti heads
4. 2.5l legacyturbo heads
5. 2.5l forster turbo heads

so i have 5 sets of cars that i can bolt on these heads with out totaly customizing everything, now which heads should i get that will make my car faster. i would also need to get the intake manifold also from the car i pick with the heads right ?

1-3-2-4 · Post by **1-3-2-4** » Sat Nov 12, 2005 9:11 pm

Anyone have pictures of the coolent lines running from the heads?

Post by **Legacy777** » Mon Nov 14, 2005 8:21 pm

you can see it here
http://www.main.experiencetherave.com:8 ... P_5952.JPG

The other line runs to the coolant tank

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EJ22T w/25 SOHC heads and turbo.

EJ22T w/25 SOHC heads and turbo.