hey whoever knows a good amount of turbo info about subarus please help. i have a 93 legacy with the n/a 2.2 i want to buy aftermarket wrx headers,with the uppipe, then get a stock wrx turbo, downpipe, and have custom exhaust made, then i will use the wrx intercooler ran from the turbo to the intake, with a cone filter on the turbo, wrx injectors and some sort of piggyback system, would this run 5-7 psi efficiently, with good reliability? i know i should just swap but i like doing hard things, that shouldnt be done, and making them work, please help if you can.
this will be interesting. you should go to nasioc/i-club and do alot reading, there is a wealth of info there. i have heard of people runnign under 4psi on stock injectors. but for over 6 you will need something bigger, but wrx injectors might be too big. i think those flow at 420 cc/min and turbo leggacy ones flow at 360. the turbo legacy is a 2.2 running around 8 psi. so this may be more desirable. i think your plan whould work. the older 2.2s are dual port so the headers will bolt up. however you will need a 2.2t or wrx crossmember to make the up pipe fit. there is a notch in it that allows extra room between the head and the member. since wrx intake gos underneath the intake manifold on the newer turbos i am not sure how the intake will line up. since the intake manifolds are a diffrent shape. also since the manifolds are a diffrent shape the WRX intercooler may be a tight fit. not to mention i think the BOV might end up sticking through your hood. good luck and keep us posted. hope the things i ahve said help. please correct me where i am wrong.
hey thanks it makes sense to me, couldnt i do a little cutting of my crossmember to make it fit, way easier then buying a new one
i belive you can do the cutting to the crossmember. i saw a pic on nasioc some time ago that showed the two diffrent crossmember. i will see if it cant find it. you can modify your stock crossmember. however you will have very little rom to work with unless you remove your engine. since there is only about 1-2" of room between the passenger side head and the crossmember where you need to cut. if you do manage to cut this w/ out movign the engine it will be a miracle if you can weld in soem reinforcements w/ the engine still there. since the piece you will be removing from the x-member is on the front and the top of the crossmber you will be losing a lot of chassis strength. if you plan to swap x-members i am not sure how difficult it will be. since you will beed to lift the engine. you may need to disconeect steering stuff along w/ other fun stuff. but i think that ,dont know if this will work, but you might be able to leave the tranny atached and just lift up the entire unit. at which point you might have enough room to swap x-members.
well..from what i know..you will be running at least 6 psi but its all on your wastegate..and make sure you tune it right...that'll help in the long run tuning it is the main support so your engine wont blow..and try not to abuse it soo much too...and you might wanna get a stage one clutch too...the turbo will make your stock clutch slip on the very first run..so...yea...and fuel pump upgrade too.. wagonL
is 6 Psi the lowest the td04 (wrx) wastegate will go? if so can you port the turbo to allow more exhuast to flow past, allowing you to keep the waste gate set at the min psi and run less then then 6? would adding a boost controller help at all to prevent spikes and allow more accurate control?
any turbo can go to its max...depends on its wastegate..and for boost controller..that can be dangerous..get a boost controller from someone like...turboXS..or something like that..dont get any that is from ebay or anything...and make sure the boost controller is at zero before you put it on..so air flow can be at normal boosting...and one spin for the boost controller= one boost...thats what i think i know... wagonL
