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EJ251

The EJ251 is a 2.5 L (2457 cc) Horizontally Opposed SOHC Engine with a bore of 99.5 mm (3.92 in) and a stroke of 79.0 mm (3.11 in). Compression ratio is 10.0: 1. Firing order is 1 - 3 - 2 - 4. SAE power:

123 kW (165 hp) and 226 N·m (167 ft·lbf)

Usage:

* Impreza RS 99-05 (US)
* Impreza Outback 00-04 (US)
* Forester 99-04
* Outback 00-04 (US)
EJ25E

SOHC 16 valve

Usage:

* Impreza RS 99~01
* Forester 99~00
* Legacy 00~01
 

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9,883 Posts
so i've got a 2.2L and was just wondering what the 2.2 is. is the 2.5rs really superior or does that .3 matter at all?
My Budget Build:
http://www.rs25.com/forums/showthread.php?t=80104

Things different on the 2.2 L than the 2.5 RS...

The L's supension is a little softer and ride height it shigher. The RS has alloy wheels and different size tires. And that .3 displacement makes a bit of difference (145HP compared to 165).

Either way, the 2.2 is a great car. It's the bulletproof engine, strongest made by subaru.
 
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