Ok im not planning on doing any super mods until later down the line, but my interests were leaning towards the ultimate racing turbo kit (stage 3)or the Greddy T67 kit. Im wondering if this is for both the WRX and the STi. And if it is then why is the Greddy T67 Upgrade only for the Sti(besides the obvious reasons). its kind of a wierd question but maybe it can be answered. i have an 04 wrx and im leaning towards the Greddy T67 but its only for the sti. could i still get that kit even tho i dont have the STi because the only reason that comes to mind that i wouldnt get it is because of the different torque levels the sti haveing approx. 300 and the wrx having approx. 217. maybe if sumone knows if it can be put on that would help. thanks.
Ya there is a big reason why it wont work. Well it would work and fit and everything but it would spool redicousley slow. The reason that it only fit the sti is because the sti has a 2.5 lieter motor when the wrx has a 2.0 leiter motor. This means that there are plenty more exhaust gases coming out of the sti's motor to spool a turbo then compared to the 2.0. But what you could do if you really wanted to have that turbo is up grade your block size to somthing like a 2.2 legacey block or perhaps even the sti long block. Like i said it would work but it would perform no where near what you would want it too.
dumb question #2 lol. i used to mess with hondas on a daily so would it kinda be like a LSVTEC or B16 head on a B20Z CRV block. would a WRX head matchup to a STi Block because i would imagine that they would have some similarities other than the difference in displacement. and another question if i go with the Td06(20G) kit since its still almost the same setup as the T67 just a smaller turbo, is there a turbo in between both that would give me a good spool up and not too much lag, because i would imagine there is a turbo in between those too. OR would i just be better off with a Vf34 LOL? i want lots of HP thats why im asking all these questions.
Well the 20g turbo runs very well with the wrx engine and it runs even better with a 2.2. The sti 2.5 short block will match up with the sti heads im pretty sure but the wrx heads flow no where near enough from my understanding. If the t67 (turbo i know very little about except for i think greddy makes it at i figur it is close to the common supra turbo the t66) is close in size to the 20g then it may work ok. Still spool slow but it could be reasonable. I have heard many good things about the 20g and 18g and plan to go with an 18g eventually.
What h.p are you going to try to get to? The 18 g is very good with the stock wrx eng. and anything bigger may be too much. Search for 18g threads. 320-360 hp?
Unless you are planning on a stroked engine or a larger block you may want to reconsider the td06 housing on that 20g. A td05 is much better suited to the 2.0 liter. The td06 will give you major problems with boost control an is prone to PTFB. If you dont believe me talk to someone who really knows. Talk to Jerry @ Deadbolt Industries
If you are set on the 20g I'd look into the 20 on a td05. The 18g on a td05 is good to around the 300 mark. (on stock internals w/o water inj) Talk to rexronald hes pretty happy with his.
well i dont plan on doing the big turbo soon but, i want a lot of HP over 360. i know im gonna have to redo the internals that just common Knowledge its just that i dont want to go buy something that i wont be happy with. And I know me I'll get a cheap bigger turbo right now n i'll just go and want a bigger one a month later lol.
back to my turbo issues. i need something cleared up, the STi V8 motor is a 2.5L( USDM pec) and the JDM STi motors would be the V7 and V8 also. but some of the STi motors are 2.0L not 2.5L and with the T67 kit it says its made specifically for the usdm sti block but will also fit on V7/V8 motors as well. SO, i was thinking if i ran the internals of the STi 2.0L in my wRX EJ20 will i be able to run the t67 besides needing the other obvious parts?
However, the motor's internals don't have anything to do with what size turbo you can run. You can put any size turbo on there that you want. Now, that's not saying you SHOULD run that turbo. Changing the internals won't help. You can upgrade the internals for the purpose of running more boost, but I don't think that's what you're asking.
The problem with big turbos is lag. That's something that's unavoidable. The 2.5L has more torque, so the lag is less of a problem. But, I wouldn't be concerned with internals right now. If you want that turbo (although I don't see why) I would worry about the transmission first.
To add to what Cosmo said the larger displacement motor you have the better it is able to spool a larger turbo. The larger engine uses more fuel/air and therefore produces more exhaust to spool it. Hence the STi 2.5 can utilize a larger turbo than a WRX 2.0
Basically for a given engine/displacement there is a limit to how large a turbo it can use effectively. Of course the purpose of the car also effects that: Street, track or strip.
well the car is going to be a street/strip car. Like i said tho im not getting this stuff any time soon it just i wanna know what im doing when the time comes. so far im pretty much not happy that i cant get the turbo i want for the purpose i want because of my motor which is frustrating So if anyone especially cosmo if you have uggetion on how i can at least get 400hp out of my car that would make me sumwhat not upset
I've been told numerous times that the USDM EJ20 motor can't handle much more than 300-350 wHP. I've heard people saying they run more than that, but that doesn't mean they've actually been dyno'd at that. BUTT DYNO!! ya know...
If any one has any dyno sheets, I'd be interested in seeing them.
But you were saying you're looking to go with a lot more power than 350 wHP so from what I've been told the only way is to do a swap. I've been hearing the JDM STi 2.0 can handle up to around 550-600 wHP. No real confirmations on that though.
Those motors also come with higher lift, longer duration camshafts (256 i believe), TGV deletes, semi closed deck, bigger ports on the head and a VF34. I've also seen some people running Garrett turbos on them with some good success, but I'm not sure how drivable off the line they are. Depending on what kind of racing you want to do, this could be good or bad, but I think mid range power would be the most optimum for driving like auto cross or even dragracing
Hope this helps and maybe stirs some good feedback, since this is all coming from things I've "HEARD". Please correct me if this information is wrong.
AutoForums.com is the premier network of enthusiast-owned
enthusiast-operated automotive communities.
We operate more than 100 automotive forums where our users consult peers for shopping information and advice, and share
experiences and opinions as a community.
So if anyone especially cosmo if you have uggetion on how i can at least get 400hp out of my car that would make me sumwhat not upset 
Linear Mode
