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EJ22T + 2.5 SOHC heads..(simple/short/not stupid questions)
Posted 08 April 2007 - 10:45 AM
I was thinking about getting an 2.5 SOHC head/intake set for my EJ22T 91 Legacy.
My questions are.....
1)The oil/coolant issue...
So for the coolant you just bypass the block+head and just tap into the lines appropiately.
The oil you just use a plug on the top towards the back.
Just that simple or I'm missing something?
Are numbers in the low 7's ok? Can I switch to a thinner head gasket to bump it up a bit (I figure theres more clearance then the DOHC)
I'm leaning towards grinding a small part of my heads because it seems a lot easier then fabing up the up-pipe....why not?
4)Phase I and Phase II...
whats the difference? Will it matter to me?
5)Other problems I don't know about...I'm going to have to mount an intercooler somewhere...not sure where? Anything else....
Thanks so much - Jutboy
PS> Feel free to instant message me!
Posted 08 April 2007 - 11:14 AM
Posted 09 April 2007 - 05:00 PM
The low compression is going to mean slow spooling. That's pretty low, even for a turbo motor....A thinner HG isn't going to bring it up by much and decking the heads plus the thing gasket might bring you more problems with cam timing than the compression will help.
I can't be absolutely sure on the oil tapping point on the block but I know of others who have Tee'd off the pressure sender or used another port on the other end of the block. A simple drainback into the pan is sufficient although I can't believe people try and sell banjo bolts to double as a return line/oil drain plug....
Any particular reason why you want to go with the EJ25 heads on the EJ22 block?
Posted 09 April 2007 - 05:39 PM
Posted 09 April 2007 - 10:06 PM
The replies you've gotten over on nasioc describe what I have also learned. Personally, I think the better option would be WRX heads on the EJ22T block or new pistons. With such low compression and a huge turbo, you'll be needing to stay in boost much more often for a daily driver.
They flow really well...lets you take advantage of a bigger turbo.
Just my opinion though...YMMV.
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