cant find the right turbo?????

[03MspeedP]

hello,
i have a 2003 mazdaspeed protege and the turbo is starting to go (blows thick blue smoke, uses too much oil, etc....), so i order a new exhaust manifold and turbocharger. problem is the JDM GT3076R turbo i order is way to big and doesnt fit my car as advertised. im returning the turbo i got but still have the same problem. most places i've seen on line say that my OEM turbo is not rebuild-able..........any thoughts?

thanks

 

[Gabi]

Look for a GT28 off a Silvia S15 spec R. You can get one anywhere from $500 to $600. It's slightly bigger than the stock turbo and only requires re-clocking it, the modified waste gate bracket from ATP along with an inlet and outlet adapter which you can find on ebay for $40 shipped.

 

[Gabi]

Just realized you bought a new manifold and based on the turbo you bought for it it's a t3 flange manifold so disregard my previous post.

 

[03MspeedP]

ya the manifold i got still has the T25 flange

 

[Gabi]

ya the manifold i got still has the T25 flange

Start looking through the Silvia/Nissan forums. I found one within a week.

 

[Ice88]

Evo turbo ftw

EDIT: Yes you will need an adapter flange, but worth it...

 

[Brian_K]

t25 from an sr20 is almost a direct drop in after clocking it. all you need to do is widen one of the holes on the stock callaway downpipe and clock the turbo

 

[Valk]

Or you could get. Chra for the stocker. Hard to beat dual ball bearings. What manifold did you get? You might need other stuff to make everything line up.

 

[Gabi]

Or you could get. Chra for the stocker. Hard to beat dual ball bearings. What manifold did you get? You might need other stuff to make everything line up.

The Silvia Spec R turbo is dual ballbearing. ☺

 

[Gabi]

Evo turbo ftw

EDIT: Yes you will need an adapter flange, but worth it...

Is that what you're running? I consider that option but decided to go with a "bolt on" option instead.

 

[Gabi]

t25 from an sr20 is almost a direct drop in after clocking it. all you need to do is widen one of the holes on the stock callaway downpipe and clock the turbo

Are you currently on this turbo? Is the difference noticeable? I have yet to install mine.

 

[duffbuster243]

I have an Sr20 t25 in mine. Hardly noticeable difference in spool. The slightly slower spool is probably safer for a stock motor as stock connecting rods don't like boost in the lower RPM Range, and neither does the stock tune.

 

[yudkib]

if everything is drop-in, rebuild the CHRA and be done with it. the prices on that came down a lot back a few years ago. youll spend more trying to make a non-oem turbo work in a factory location than just doing it right.

 

[Gabi]

I have an Sr20 t25 in mine. Hardly noticeable difference in spool. The slightly slower spool is probably safer for a stock motor as stock connecting rods don't like boost in the lower RPM Range, and neither does the stock tune.

I'll be running a custom tune with a megasquirt running in parallel to the stock ecu. You didn't go with the dual ballbearing turbo? I know there were three different turbos for the Silvia. The spec r having the dual ballbearing turbo. That's what I got.

 

[duffbuster243]

nah, not worth the money for a ball bearing turbo, i think i got the t25 journal bearing turbo for $125.00. Car is mostly stock and my daily. I have a miata with a td05 16g turbo as my fun car. It's nice to see some protege's starting to run megasquirt though, I've been temped to try it on mine after gaining a lot of experience with it on my miata.

 

[Gabi]

nah, not worth the money for a ball bearing turbo, i think i got the t25 journal bearing turbo for $125.00. Car is mostly stock and my daily. I have a miata with a td05 16g turbo as my fun car. It's nice to see some protege's starting to run megasquirt though, I've been temped to try it on mine after gaining a lot of experience with it on my miata.

I will more than likely start a thread once I start running the megasquirt. It's already assembled and ready to go I just haven't had a chance to install it. I'm using a plug and play harness so no splicing the stock harness ��

 

[Brian_K]

Are you currently on this turbo? Is the difference noticeable? I have yet to install mine.

been running it for almost a year now, no real difference in how quickly it spools since it's such a small turbo. only real difference is that the journal bearing turbos are way more sensitive to compressor surge compared to the stock ball bearing one. i like them because they're cheap, easy to find, genuine garrett (not a chinacharger), and rebuildable. unless you're planning on boosting over 15lbs i dont see the need to upgrade

 

[Gabi]

been running it for almost a year now, no real difference in how quickly it spools since it's such a small turbo. only real difference is that the journal bearing turbos are way more sensitive to compressor surge compared to the stock ball bearing one. i like them because they're cheap, easy to find, genuine garrett (not a chinacharger), and rebuildable. unless you're planning on boosting over 15lbs i dont see the need to upgrade

So you also got the Journal bearing turbo instead of the dual ballbearing? Are those easier to find? Why not go with the dual ballbearing? Sorry for all the questions. I compared it to the stock turbo and the compressor side is noticeably bigger. In any case I plan to run 18 psi once i get a forged motor put together.

 

[Brian_K]

So you also got the Journal bearing turbo instead of the dual ballbearing? Are those easier to find? Why not go with the dual ballbearing? Sorry for all the questions. I compared it to the stock turbo and the compressor side is noticeably bigger. In any case I plan to run 18 psi once i get a forged motor put together.

I've had the stock msp ball bearing t25 the first time i turbo'd my car and i can say it doesnt really make a difference (if any) at the stock boost level. the sr20 t25 is really easy to find around here since there are so many 240's with swapped engines. Last time i checked the average price of a used journal bearing t25 on craigslist and zilvia is $100. I chose it because it's more economical than purchasing a used ballbearing turbo and finding that the seals are blown. A rebuild kit for the t25 is around $50 and for $100 my local shop can rebalance it as well. You can't rebuild a ballbearing turbo, when it goes out the CHRA needs to be replaced (around $500 and up).

If you're planning on running that much boost i'd definitely go with a bigger turbo, iirc the t25 loses efficiency at around 15psi and that's pushing it. And if funds allow it i'd definitely choose a new ballbearing turbo over a journal bearing any day.

 

[Gabi]

Thanks for the reply Brian. I still wanna give it a chance. My stock turbo has over 171000 miles on it. I'm sure it's a little tired by now.