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Old 09-06-2008, 09:44 PM   #1
neogold
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Join Date: Jan 2005
Default RS SOHC and 06 WRX Short block

I seized my 01 2.5 rs block and was wondering if I use the new 06 WRX 2.5 block as a replacement do I need to do add any wires? Kinda hoping that i can just slap that block in to my heads and try and use the current exhaust.

I dont think that vvt would have any difference as im using 01 sohc.

I am not trying to turbo the block im just trying to get the thing back up and running and its cheaper for me to get the 06 short block then it is tryin g to find an ej25

if any one knows let me know

thanks
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Old 09-06-2008, 10:10 PM   #2
parkes
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Dont know why you think a Turbo block would be cheaper it will make less power for you and cost more and be more of a headache, Find an EJ25 block or full moter it will be alot cheaper, Maybe this is a sign from god telling you to turbo your car!
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Old 09-06-2008, 10:29 PM   #3
neogold
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All these builders must be in Canada. I got one telling me do it and the other sayings no dice.

http://www.rs25.com/forums/showthread.php?t=86789


link 25rs thread ive started over there.

Im getting the 06 wrx block for 150$ so im not sure how much cheaper it can get.
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Old 09-06-2008, 10:49 PM   #4
Matt Monson
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You can do it, but as was suggest over on 25rs, your compression would drop a bunch. The only way I would do it would be if I planned to turbo it later. And contrary to what you say over there, you can definitely turbo charge with the Ej25 NA heads. Do a search for Wedge, Xephyr, and Graham just for starters. All three of them drive old RS's with 300-400whp and SOHC Ej25 heads.

But if it's just about getting your car back on the road, it will work. Just don't expect more than 150chp out of it.
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Old 09-06-2008, 11:00 PM   #5
silentt
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I wouldn't turbo it unless you are willing to spend the money to have it done properly. You could probably get 9.3:1 compression forged pistons and turbo it down the road when you have more money to play with. That way you don't lose as much power/fuel economy and you're still in the "safe" range to handle a decent amount of boost. There are a few built motor guys out there running compression ratios around there so you could look them up and ask a few questions.
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Old 09-06-2008, 11:11 PM   #6
neogold
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Thanks
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