willahlborn

Those 2.5L engines are nice to turbo, but the compression is a bit high; i'd reccomend thicker headgaskets. Also if you want to run more than 4psi (you will) you'll need an intercooler. FMIC is best. Those engines detonate like crazy without one.

Sideout

ok, just to let people know, EJ20s suck ***, well at lest ones off of MY02 WRXs, i'll try and post the pics of what happened to my friend's WRX. Long story short, it has probally like 12 holes in the block stock boost and turbo, just intake, DP and catback. It has the best plate ever tho

kain

rather hard to do that to a wrx. especially what has been done. it probobly had a bad af ratio.

ej20s are great engines. sim[ply superb. how many engines come with computer that will digitally advance or retard timing 20 dehreese in 1 rpm?

accordepicenter

the engines are pretty tough but i hate subaru transmissions. They needed to have good managemant or theyd have SERIOUS failures under warranty, and thats no good. Too bad most hardcore WRX owners looking for big power go with a TurboXS UTEC...

Sideout

well heres some of the pics






And the CRX Rally/TSD car he's driving untill we build his EJ22

SpeedyJAY

Ouch, can you say Detontion!....
Anyways, if I do go ej20 I mean the old JDM STI engine from the GC8 chasis. (they came twin turbo!) But I dont think I want to do that...

Been doing some searching on various Suby boards, and its just too easy to turbo a suby engine, no real turbo manifold required, just an up pipe and down pipe, even found a few places that sell the pipes to bolt on a new WRX turbo.

As far as this engine goes, its got damn high compression and way advanced ignition, so I am definatly going to need to manage that. It runs hot (probably is the source of the detonition problems w/o an intercooler) so not too much boost.

I was going to keep this car a few years then trade up to an sti or such, but the more I drive it the more I like it. It looks waayyyy better then the new bug eyes WRX, and is a lot lighter. I just cant beleive how well it handles, Ive never driven a car that could out turn my old CRX, until now...and its still all stock.

I think this is going to be a total sleeper turbo project, I dont even want to lower it, I dont want to mess with the car at all...It just needs the power it was meant to have, I just screams "I was supposed to get 280hp dumbass USDM!!"

AgentMurdoc

Congrats on the car man. Looks good. I like that generation, but I only have one problem with them, I don't think the tail lights do the fron justice. The front looks all fierce and rugged, but the tail lights look like a shy little school girl.

kain

turbo it and put some wrx pistons in it. thats all. probobly might want to put in a wrx ecu aswell.

crxrx7

Yeah I will tell you why they detonate so bad. You see that square on the piston. Well that is bad. It has a hard edge which gets hotter than the rest on the piston. Now if you took a dremel to that and rounded out that edge you would be good for 10 psi. If you want you can do this little experiment. It involes fire! Go get your dads propane tourch and a chisle or anything that is thick and has sharp edges. Now take you blow torch and heat that chisle up. Watch what happens to the edges. they will glow first then it keeps getting brighter and brighter. That is what causes detonation. It is hotter than your sparkplug which hasn't sparked yet. Hmmmmmm?

SpeedyJAY

Good call....Maybe that could be why ignition is advanced so much

Did that guy retard his ignition any more then stock I wonder?