can i put a sti turbo an a 1999 legacy GT 2.5

[fred]

thinking of buying a legacy 2.5 GT 1999 and was wondering if u can put a turbo on it and if a STI turbo can fit and will the engine supported it?

[J-MoNeY]

Most engines will. Is it a good idea without building the engine up a bit and having proper supporting mods? Proably not. I'd say your pretty safe with running 5-6PSI on it.

[douglas vincent]

Buy the AVO kit from Rallitek.com. 6 psi of boost yields something like 250-270 chp.

[BAC5.2]

It can, and has, been done.

You could always swap an EJ257 into the car, that would be fun!

[professor]

considering the number of 2.5 engines that blow the head gaskets all by themselves, isn't it a little optimistic to turbocharge and expect reliability ???

[BAC5.2]

Professor - I know lots of 2.5 RS-T guys out there, that have been doing it for a while.

And apparently, the phase 2 SOHC 2.5's have less frequent headgasket issues.

[boostjunkie]

Professor - I know lots of 2.5 RS-T guys out there, that have been doing it for a while.

And apparently, the phase 2 SOHC 2.5's have less frequent headgasket issues.

Unfortunately, the 99s are the phase 1s. I don't buy that BS about a phase 1.5 design either. Cobb even admitted that the phase 1 and 2 engines were indistinguishable by the "block ridges" originally speculated to be the "marks" of a phase 2 block.

Furthermore the phase 2 engines have been suffering a similar demise as the phase 1s... instead of an internal HG leak they tend to have an external leak.

I personally would not go through all of the trouble putting together a turbo kit for a 2.5L n/a motor.

Swap a ej20 in there an be done with it (or STi engine, if so monetarily blessed).

[BAC5.2]

Phase1 = DOHC, right? Phase2 = SOHC?

My friends 99 Impreza RS has an SOHC EJ25...

Find a WRX owner who's car was totaled, and see if you can buy the engine and tranny from it.

[THAWA]

It should have a SOHC EJ25... I wouldn't stress an EJ25 anymore than it already is. It's a stretched engine design. It wasn't meant to have more power than it already makes.