New turbo setup! T3/T4, Pics added!
 

Hi everyone,
just wanted to share, I swapped out the restrictive stock turbo and built my own using the stock center section. Its a T3 hot side with a .63 A/R housing, and a T4 compressor side with a .50 a/r. It has a 3" inlet and 2" outlet. I haven't got the intercooler set up yet, but even with it necking down and blowing in the stock location, it is a different animal! Once it gets above 10 lbs of boost it really takes off! The whistle is unreal. I took some pictures, I just gotta load them up.

Jason

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Jason,

That sounds fantastic! I've just placed my rebuilt (by me) stock turbo on my car, I too was thinking that a T3/T4 would be an interesting idea. Please attach some pictures so we can share in the excitement! :D

Cool! I was thinking about use a Cosworth .48 or .63 A/R exhaust housing with a small T4 compressor.

So a small cold side/large hot side combination works best on a diesel? I had it the other way around. My plan was to build a .60 compressor/.48 turbine using T3 parts. Is T3/T4 the way to go?

a VNT/VGT should be better, but the problem is the boost control (theoretically).

Well not really, the turbine side really needs to be a .48, a .36 like stock but not that restrictive stock one would also work. It spools ok, but not like it did. Then again, I still have more fuel to throw at it which should help it spool better. A .60 A/R compressor would work great, I just had access to a .50 T4 side so I used it.

Jason

You should post a video so we can hear the sound... maybe one at WOT? I wanna see the difference between my stocker and yours... if its able to be quick enough I might sell my turbo AWD eclipse and just make my volvo a quick family car that gets decent mileage :)

I don't know if its going to hold up with your AWD eclipse just yet, but I have heard there was a guy somewhere up in the pacific northwest that had run a best of 13.1 with his turbo diesel. I'm guessing he had injectors, and I'm sure a stainless head gasket and probably ARP studs too. I still have to install an intercooler before I add more boost.


Right now, Its wastegated at 15lbs, and I can say for sure, 15lbs with this turbo is faster than 25lbs with the stocker, no joke! As the rpms climb it keeps pulling harder, rather than kinda falling off by 4500 rpms like it did with the stock turbo. If you look at the exhaust housing of the stocker, it is a very restrictive design, with more than half the area of the turbine inlet being directed to the waste gate. This is not ideal for any sort of performance or higher than stock boost.

Theres also a couple pics of my new down pipe, its 2-3/4", and next to it is the stocker so you can compare. It really flows well, and the sound is deeper and nice overall.

Jason

http://img23.imageshack.us/img23/466/img1584e.th.jpg
http://img259.imageshack.us/img259/723/img1586u.th.jpg
http://img232.imageshack.us/img232/4748/img1589p.th.jpg

After you click on the image and the page pops up, you can click it again for a full resolution full screen image.

http://img232.imageshack.us/img232/3182/img1591b.th.jpg
http://img197.imageshack.us/img197/2020/img1593a.th.jpg

By the way... what exactly are our options for adding an intercooler? with the stock mounting position I can't see it being easy to route... I would really like to add one soon to help keep the air temps down inside the motor.. The intercooler on my eclipse is about the size of a mouse pad but does a fairly good job considering how much of a different there is when it wasn't hooked up...