Any Helpful Hints For rebuilding stock T25 Turbo

[owenwes]

Dunno if you guys read any of my past threads but im having problems with my msp. My car started out bogging when I would try to accelerate from a stop. Any way i replaced the wga and that didnt help. Took my car into a shop, they said my cats were clogged so I stomped out both my cats and that didnt help. Present day and now my car isnt even drivable. It took me long enough but I finally realized my turbo had gone bad (For some reason after I used the Z-Max engine system which I suggest you dont use). My next plan is to pretty much take the turbo off and rebuild it. I already ordered a new oil line for schnits and gigs and the one on mine is startin to wear away it seems anyway. I also got a turbo to downpipe gasket, oil return line gasket, and turbo inlet gasket on the way also. All thats left that I need to order is the t25 turbo rebuild kit (about $80 or so).

If anyone can leave some hints for taking off the turbo or even rebuilding it for that matter, it would be greatly appreciated

Also, check out the pictures below and tell me what you think, and FYI- My exhaust would spit out white gas when I would try to punch it.

[MAZDA_SPEED]

Sorry to hear that. hope you get it fixed and running!!

[Captain KRM P5]

call up Nick at modern performance in new jersey

[owenwes]

The number there is 732-222-3679 right. Sorry im in the cali area so not really familiar with the East Coast. This seemed like the best forum for me. So he could probably help me out with rebuilding it? If any one is curious of why I go out to do it by myself is because worst case scenario is I mess up my turbo and I can replace it with a new one but If everything goes as planned then I will learn how to rebuild turbos.

[orng1]

This factory turbo is a ball bearing turbo. I hope you didn't order that rebuild kit because you can't just swap that out. They charge a lot for a reason.

[owenwes]

FYI

I have these parts on the way from ATP
New oil Feed Line
http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=ATP-OIL-014&Category_Code=ATP-OIL1

Didnt know which gasket to get so i got em both
http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GRT-GSK-008&Category_Code=GSK

http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GRT-GSK-010&Category_Code=GSK

5 Bolt Gasket
http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=ATP-GSK-016&Category_Code=GSK

and inlet gasket
http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GRT-GSK-004&Category_Code=GSK

[owenwes]

I did'nt order that rebuild kit yet, just the things listed above, also worst case scenario, if I cant rebuild the turbo, I could use the things I ordered to install a new one. Is there a ball bearing rebuild kit that I can purchase?

[owenwes]

I found this little site that seems like they can help

http://www.gpopshop.com/garrettt2kits.html

What do you think?

[owenwes]

Please People, some info would Help Alot.

[Captain KRM P5]

not many people with these turbos or vehicles go the route of a DIY rebuild honestly. alot of people have it sent out or go to a larger turbo.

[orng1]

Just having to deal with the internal wga was enough for me to go with a different turbo. I can't imagine what I'd be thinking if I was looking to rebuild a stock turbo at the cost that it goes for.

[Captain KRM P5]

i actually asked gpopshop and they were unable to do the work

[ogsp5]

Remember your car has the GT25(Dual ball bearing) which is a completely different animal from the T25(Journal bearing). Try a Garrett dealer. Limitengineeering in AZ does the rebuild for about $500. I hear also Garrett is going a turbo swap ie core charge. Maybe check that out.

[owenwes]

Basically, I think at the price of $500, its just better off to get a brand new turbo.

[shane02pro5]

That $500 is most likely a new center cartridge and you just swap the comp housing and exh housing from the stock turbo so it is essentially a new "turbo"

[25FConv]

I found this little site that seems like they can help

http://www.gpopshop.com/garrettt2kits.html

What do you think?

gpopshop are some awesome guys, I talk to gary about 3 times a week....but i dont remember if they can not or just will not do rebuilds on ball bearing turbos, they specialize in journal bearing turbos.

[owenwes]

Does anyone know the Pluses and mineses of Dual ball bearing turbos compared to journal bearing turbos?

[Captain KRM P5]

gpopshop are some awesome guys, I talk to gary about 3 times a week....but i dont remember if they can not or just will not do rebuilds on ball bearing turbos, they specialize in journal bearing turbos.

he told me after i sent him an MSP T25 that they could not rebuild it short of installing a new cartridge, which ends up being close to the price of a 28RS from ATP

[25FConv]

he told me after i sent him an MSP T25 that they could not rebuild it short of installing a new cartridge, which ends up being close to the price of a 28RS from ATP

Well I guess that is rebuilding it pretty much...I am just quoting what Gary told me on the phone, that he can not rebuild dual ball bearing turbos, that gpop shop specializes in journal bearing turbos mainly for the fact that you can rebuild them.... and at what your gonna pay why got a gt25 rebuilt? you would just be short a few bucks of purchasing a disco potato....

[owenwes]

So basically in my situation I should just get a new turbo, Ive basically had my mind set on the gt28rs but that is also a dual ball bearing turbo and I dont know if I would want to put up with it in the future. Is there an alternative replacement for our car that is a journal bearing turbo, and what are the differences performance wise from a journal bearing and dual ball bearing turbo?

[orng1]

I changed the stock turbo to a T3 with a simple sleeve bearing and didn't notice that big of lag. There was a little but worth it for the kick in the pants from the biggeer turbo.

[JDM Sam]

here (http://***********************/mazdaspeed3.htm) if you want a new CHRA.

[owenwes]

Basically im looking for a direct bolt on, with your T3 what did you do for the wastegate actuator?

[ogsp5]

Look at importperformance.net they have the GT25 for about $750 new and the Disco P for about $1000.

[owenwes]

Im not really lookin for just a replacement after the crap this turbo is giving me. Does there happen to be an internally wastegated journal bearing turbo that is a direct fit for our car.

[shane02pro5]

I highly recommend Dual bb over journal! Your situation was unique and you would be going backwards as far as reliability... with proper cooling and oil supply the dual bb can't be beat!

[owenwes]

Thank you for the answer of why the dual ball bearing is better than the journal bearing. basically what I was looking for was an uprage to our turbo so in mean time I can get the t25 rebuilt for maybe a future car or if i was to get rid of my msp then id put the t25 back on and keep the t28rs.

[owenwes]

Which of these tubos is the prferred on

http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GRT-TBO-004&Category_Code=GRT

http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GRT-TBO-022&Category_Code=GRT

and which selections would I make to make it compatible with the msp?

[shane02pro5]

The gt2871 has a larger comp wheel so it will spool a bit slower but will have more topend. The comp housing also plays a major role in spool up time... the lower the a/r the faster the spool but less topend. What are your plans? The gt2871 and gt28rs with the t25/28 flange and 5bolt gt discharge is a direct swap. If forged motor is in your plans the loss in turbo lag will be worth more topend when running higher boost.

[Captain KRM P5]

Which of these tubos is the prferred on

http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GRT-TBO-004&Category_Code=GRT

http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GRT-TBO-022&Category_Code=GRT

and which selections would I make to make it compatible with the msp?
http://siteground207.com/~protegeg/product_info.php?cPath=32_181&products_id=1492
http://siteground207.com/~protegeg/product_info.php?cPath=32_181&products_id=844

if you need a better deal let me know

[owenwes]

basically I am looking for a replacement turbo for the t25, im lookin to boost about 8 lbs or 9 if im lucky. Im not gonna go forged for a little because all my funds will be going to the new turbo. Basically so far, my engine upgrades are, injen ram intake, greddy profec b spec II, forge bpv, just got an atp wastegate actuator but prob wot be useing it any time soon, and now I even have gutted cats. The good thing about the atp site for me is that they do COD.

[owenwes]

What is the preffered turbo housing for the GT28Rs turbo- .86, .64, .63, .82, .48, or the .72?

[owenwes]

What is the preffered turbo housing for the GT28Rs turbo- .86, .64, .63, .82, .48, or the .72?

[MANDO]

Thats funny, G-Pop Shop quoted me a little over $1000. for there high performance rebuild which includes 360 thrust washer, GT28 wheels porting, balancing and machining for the GT2554R. Not practicle for this price IMHO. Anyways, If this will help I contacted ATP Turbo and I will be sending out my Factory CHRA including a few hundred dollars. In return I will receive a brand new CHRA. Better than any rebuild. They will mate the Compressor and Turbine housings for you as well. Be very carefull trusting someone to rebuild this turbo because Garrett does not manufacture a ball bearing rebuild kit. Some guys will tell you it can be rebuilt and slap the wrong parts in there causing it to make a loud whinning noise and cause other deficiencies. Go to the experts, MPNick, G-PoP exc.....

[MANDO]

All in All, I think Ken is right. If G-PoP specifically told me that they could rebuild my turbo and now they claim they don't, just sounds a little sketchy. I've called about 7 different turbo shops from Cali to Arizona and nobody could give me a solid answer. This of course was before I realized Garrett did not make the rebuild kits. And If Vendors do rebuild these turbos, I wonder if there reusing the original ball bearings. In my situation, like I mentioned before, I will be using the new CHRA from ATP for a back up turbo and going Gt28RS. It's always good to have something to fall back on in case of an emergency. Cause we all know blowing a turbo is no fun.

[owenwes]

Yeah, im just going to be getting the gt28rs, but what is the housing suggested?

[terbow]

depends on if you want top end or low end. if you want more top end, go for .86 if you want it to spool closer to stock which would be better at 9 psi get the .63 or .64. If you plan on going with bigger boost/hp get the .86

[Captain KRM P5]

i almost always sell the smaller housing to people