Broke my T25, rebuild didn't work.

[Liquid_Neon]

edit: had a problem with the kit and the rebuild failed i guess. look below

Apparently my turbo decided to start smoking over the weekend. I have been smelling oil every so often when i idle after boosting, but it finally started puffing blue smoke. I rebuilt my motor and used a turbo that never smoked before and didnt rebuild that. guess i should have, oh well.

Least now i have something to do next weekend, and then 2 weeks afterwards i'm building my exhuast if all this overtime pays off

Funny thing is I was already planning on installing my boost controller and resealing my valve covers. The back half moons were leaking a bit cause i never used any goop i guess.

[float_6969]

At least it's not a BB and it's super easy to rebuild. Hardest part is the BIG AZZ clip that holds the compressor housing on.

[Seishuku]

I need to do this as well, I keep getting a puff of smoke on decel...

[Spawn_CA18]

my old turbine was smoking like hell too before i remove it .

i have done many tings to many cars , but i can't find courage to try repairing it .

[float_6969]

It's actually pretty easy. The only trick is to make a mark so that the shaft, nut, and impeller all line back up again so it doesn't need re-balanced.

[Liquid_Neon]

Curse you usps!! still havent got my rebuild kit!!! supposedly it was delivered yesterday.... but not to my friggin house! jerkwads...

I have the turbo apart and boy oh boy are the seals gone on the exhuast side. strange it never smoked before.. but i have driven it nearly 1k since it sat for four years. While i never rebuilt it i DID clean it so i prolly removed whaever deposits may have been keeping it from leaking badly :P
Also there is nearly no shaft play even now.

Soon as i get my parts i can put it all back together and get ready to buy my exhuast parts so i can have it welded up. I would like to not have a ringing in my ears after driving for an hour :P

[float_6969]

Ahh, the beauty of an open exhaust, LOL

[Liquid_Neon]

FINALLY GOT THE KIT!!!

hooray! took the turbo all apart and cleaned everything. there was quite a bit of hard rusted in coked oil in that metal plate on the exhuast side. funny thing is someone must have worked on it fairly recently before i got it.
The exhuast houseing was totally seized when i first got the turbo, so i assume they didnt mess with that side much if at all. The thrust washer and bearings all look hardly worn, and the turbo had nearly zero shaft play! It honestly looks like they did something wrong or didnt replace something towards the exhuast side cause that was the only spot leaking
Well, it'll be done tomorrow and back on the car sunday.

[float_6969]

woot! let us know how it goes once it's back on.

I just had the seals let go on the turbo in my Mazdaspeed Protoge. Unfortunately, it's a BB turbo (GT25R) so no rebuild for me. More like an $800 CHRA replacement. Ghey

[Liquid_Neon]

DANG NABBIT!

AAARG... so who's rebuilt an SR20 T25 before?? I have run into a small snag with the little spring clip that sits on the turbine side. It seems the kit came with two sizes... one is too small and one seems too big!? At least i think its too big cause it wont snap into place and the dang thing has twisted on me. I tried straightening it and popping it in again.. but i cant seem to get it right.

I am assuming this clip is like a piston ring maybe and keeps oil from puking into the turbine side. Cause it was blowing smoke so assume my old one isnt very springy anymore.

So... advice?

[float_6969]

It's the one that "won't fit". It does work like a piston ring, and is the main thing responsible for keeping the oil back. IIRC, you need to get it on the shaft and then try tap it into the housing. I'm not 100% on that though, as it's been a long time since I've done it.

The old one loosing it's springiness is the reason it leaks oil. Usually it comes from it being overheated.

[TheMAN]

woot! let us know how it goes once it's back on.

I just had the seals let go on the turbo in my Mazdaspeed Protoge. Unfortunately, it's a BB turbo (GT25R) so no rebuild for me. More like an $800 CHRA replacement. Ghey

talk to Nick Mannarino at Modern Performance (New Jersey), he does rebuilds of the GT2554R for a reasonable price... he also does GT2854R upgrades to the same turbo

[Liquid_Neon]

damn damn damn!
I worked on it after work again today.... whatever the hell happened i cant seem to fix it now. The damn piston ring type seal thingy is fubar. As it is i hope i can make sure the shaft and turbo houseing aren't all boogered up. wtf, i had no problem with all the stuff most ppl seem to have trouble with and then this stupid seal bites me in the a**.

So now I'm gonna start searching online for a new turbine oil seal ring.... if anyone knows a good place to call let me know. hopefully i can sort this out soon so i can order my exhuast and start getting ready for CIPmotoring in august. I really really wanna be able to go

Edit: well i found this on ebay and mentioned on a saab performance webpage
http://www.ebay.com/itm/T2-T25-T28-Turb ... 5d31be29d1

Could be my best bet without ordering a whole 'NOTHER rebuild kit ??

[float_6969]

that's the one

[Liquid_Neon]

well this blows! I failed... must be cause the crappy seal ring buggered up the turbine and the turbo housing. Now it smoked even worse... like might as well be a chimney.

Guess I have to put my ca turbo back in and hope its okay. A long time ago i had THOUGHT I blow it up, but there was another problem. I hope this turbo lasts until i can find another good sr T25 or better yet, a T28

Maybe i could make myself a hybrid?? I know dee did this... its a T3 compressor on a T25 turbine correct? or something like that maybe...?

I also have a T25 from a 300zxtt but the snails are different.

[float_6969]

I'm sorry to hear that, you'll get it sorted out though.

[Liquid_Neon]

good news, swapped turbos today. my factory ca18det turbo is back on and smoke free. well 99% smoke free, i noticed one or 2 small puffs occasionally. Next is exhaust... got the pipes, just have to cut and weld.

[boost_boy]

I've always picked my battles according to the amount of difficulty, labor, time and headaches assoociated with a task. Well, turbos are high and on that list and I spend the money for warranty and peace of mind. I praise you, crazy fool .

[Seishuku]

Well I finally got my rebuild kit, after being off boost for nearly 3 months...
Got it all done in about 4 hours, and so far so good... I haven't noticed any oil blow by anywhere, but it's only been 24 hours since I did the rebuild, so only time will tell if I did a good job.

It seems solid though, and performs much better... But that may be because I took the time to completely flatten all flanges, so I don't need any gaskets... Except for the head flange, which I made a new aluminum gasket with copper spray.

[dash]

I took the time to completely flatten all flanges, so I don't need any gaskets...

i take it u r referring to the turbo-to-manifold flanges ? .....did u simply "machine" them flat ?
some old school turbo cars came from the factory with no gaskets on the exhaust side

Except for the head flange, which I made a new aluminum gasket with copper spray

so u just cut the port gaskets out of 1/8 aluminium plate or somethin ?

[Seishuku]

Yep, manifold to tubine and turbine to exhaust... Rough machine cut, then hand ground completely flat with a large flat stone.

Yeah, we have a waterjet at work, so I drew up a CAD drawing of the gasket and cut one out of some scrap 16ga aluminum.