A theory came in my mind, while I was driving around in Imprezas before I got my Liberty, I drove an NA 2.0 Litre , and NA 1.8 & 1.6 litres they had way less power than 2.0 Litre... Possible because of the size & power & compression differences... On 2.0 Impreza has 9.7:1 Compression & peak power is 88kw. Liberty NA 2.2 is 9.5:1 peak power is 98kw. Therefor in my mind, if I had EJ20 Heads on EJ22 engine, Its possibility would have 104-108kw instead of 98kw. 

It came to my mind is that 2.0 Litre Heads DO bolt on 2.2 Litre, that way I could have 9.7 or something Compression for increased power?? 

Is there an SOHC EJ20 correct? 

Or I am wasting my time? 

PLEASE don't tell me go for turbo. 

Cheers 
AP
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Owns 1995 Liberty "Rallye" Sedan - NA 5MT AWD EJ22 
 
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206er
Legacy Nut


Joined: 04 Jun 2003
Posts: 1121
Location: Ft fun
 Posted: Mon Oct 31, 2005 5:14 pm    Post subject:    

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this board is mainly geared toward north american subies, we didnt get any of the smaller displacement NAs other than a 1.8 in the impreza. youre better off asking this over on www.rslibertyclub.org 
good luck
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Dark blue 1991 L wagon + .3L 
1979 yamaha XS 650 
Jeremy Soltow 
 
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Matt Monson
Know It All



Joined: 09 Nov 2003
Posts: 1630
Location: Bouder, CO
 Posted: Tue Nov 01, 2005 10:44 am    Post subject:    

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AP, 
I can help you on this. The SOHC Ej20 heads you are talking about are identical to your Ej22E heads. The difference in compression ratio comes from the piston dish and not any difference in combustion chambers. You would be right where you started if you switched those heads. 

But, there is a company here in the states called Delta Cams. They run $165 USD and are ground on your cores. They will net you about 15hp (sorry I don't speak KW). A pretty good bang for the buck. If you don't want to pay shipping both ways, I have a set of cores that I could sell you and send to Delta on your behalf. I would want $50 USD for them, and then you could work out the payment and shipping details with Delta...
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