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Old 08-05-2004, 05:01 PM   #1
Scooby Specialist
Member#: 45275
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: Middletown, NY
2007 wrx
98 2.5rs,89 & 95 240sx's

Default What will my cr be with a v7 or v8 mated to 98rs heads

I'm looking at swapping in a stronger shortblock for my turbo project. I wanna keep my heads, and use a stronger semiclosed/closed deck block. I have searched and haven't found anyone with a 2.0 semiclosed deck block swapped into their 98 rs. Closest I found was one of the vendors on their page had a 99 with a early model wrx closed deck 2.0 shortblock. No cr # tho. I know someone is going to say 2.2t block but they are getting really hard to find and everyone wants alot for them. I looked in stickies and thought it would be usefull to have a chart with heads vs. shortblock equaling cr.
Thanks in advance
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Old 08-05-2004, 05:20 PM   #2
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Member#: 40501
Join Date: Jul 2003
Location: Paris, FR
2005 Decathalon 21sp
One WheelSeanPower


Why would you stick with 98rs heads?

You will be capping power very, very low with that setup.

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Old 08-06-2004, 01:17 AM   #3
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Join Date: Oct 2000
Chapter/Region: SCIC
Location: SoCal

just swapping the crank trigger should allow you to use the entire sti engine if you have a 98 RS
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Old 08-06-2004, 02:34 PM   #4
White 2.5rs
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just stay away from 98 stuff if u wanna make madd power or spend a lot of money towards the project
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Old 08-07-2004, 06:28 AM   #5
RK Performance
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Member#: 19069
Join Date: May 2002
Chapter/Region: RMIC
Location: Thornton CO
2005 Impreza WRX
2002 RS, RIP


Originally Posted by White 2.5rs
just stay away from 98 stuff if u wanna make madd power or spend a lot of money towards the project
You do realize Xepher is using stock 98 heads and putting down 320+ to the wheels at over 5000 feet right? I wouldn't say he won't be able to make power.

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