Sparky N, The Impreza turbo [ or any other turbo for that matter] will have an oil feed and oil return on the back of the drivers side head for the supply to the turbo. Of course it is possible that a sharp operator could fit these to a naturally aspirated unit......

However, generally speaking there is no real way to tell unless the engine is stripped and the pistons and cylinder heads examined internally.

There are no numbers on the outside of the engine that I have ever been able to recognise that would be definitive in telling the difference.

Twin turbos have an oil feed on the opposite head at the front of the head behind the cam belt cover backplate with the return on the back of the passenger side [same] head.

Hope that helps - good luck David API Engines

Edited for typo's

[Edited by APIDavid - 9/4/2003 12:10:39 PM]

 

Can anyone tell me how to spot the difference between an impreza sport and an impreza turbo engine with nothing on it? are they completely different? or are they similar but can be told appart by numbers ect? Any help appreciated as i'm trying to buy a cheap engine for 400 BHP project!

 

Someone outthere must be able to help? I may be going to look at the engine today or tommorow and don't want to buy it if it's no good.

 

Cheers david thats helped loads, just hope the unit i'm going to look at is a good turbo one! If i buy the engine i'm going to re build it to run big boost any idea's on reasonably priced uprated internals?

 

Sparky N,

You're about to walk into a minefield. Call me on 01926 614522 for a chat about what where and how.

David

 

kabooooom

 

Have a chat to Andy F, Adam M, Harvey, David Wallis, John Banks, Rannoch etc etc etc etc etc