turbo wear signs? turbo out of car visual inspection

[slystiguy]

Hi there, I've spent the evening removing this an that form my PITA car, anyways my car was having boost problems, it would start an idle fine, but the boost wouldn't kick in until the late 5000rpm, I had no idea why as I thought I had installed it correctly after removing it for a up an down pipe replacement . So tonight I got this turbo off again an honeslty the fins I thought were bent are fine, only thing is, it looks alil "burnt" on the turbine wheel? I have photos but my stupid cell phone cord is not working >.<

anyone can give me advice on what todo?

I originally got advice from Tony (RDL performance) who thought it was badly installed turbo.

I think its been starved of oil, but theres no smoke out the back... So what would give it this burnt look?

[slystiguy]

[DRFVDR]

I aint sure but to me that looks like the engine is running lean, I thought the exhaust turbine shoulda been blacker (unless you running AVgas init )

[slystiguy]

it was black last time i saw it haha,thats why I thought maybe oil starvation/got to hot, inside might be worse, would like to know if I should open for rebuild or not.no shaft play at all.might be something else causing me boost problems...

basically, took the turbo off for a uppipe install an put a 3inch catles rage downpipe on it at the same time.... as well as a resonator an new muffler tip.ever since then its never boosted the same...

Would by any chance this be wastegate failure, overboost turbo burns out sorta thing?

[zarnah]

yeap I dont see any real problems with that apart from maybe a tiny bit lean as drfvdr says but shouldnt be giving you the symptoms you have, if anything the motor will build boost quicker running a bit lean, within reason, det is a killer!

[slystiguy]

injector fail would throw code?

[zarnah]

dont know about fail, but mine were all over the show and didnt throw a code, allthough I think there is a code for each injector

[zarnah]

when are you gonna put the turbo back on? I might be in town tommorow night so coulod come and have a brain-storm with ya

[slystiguy]

Well I was planning to rebuild it when I could get a kit next week ... but now im wondering if theres some other problem.. dont wana rebuild it if its not faulty or its gona damage it worse...

your welcome to come have a look, but I doubt you will be imprezed with the car (haha)

bring the injector rail an boost tap with you?

[Guest S T E Y E]

to me in that picture it looks like the exhaust wheel is starting to crack??? too hot?? looks to me like ur engine running lean

[slystiguy]

I shall look into the fuel setup then, hopefully I can get some rails to do that split rails mod.

do 95 sti come with good injectors?

I guess now that im going to take the intake off I could repaint it

ALSO, running a couple more psi now because of the catless downpipe makes it flow better, would the extra psi make it run that lean?

[zarnah]

yeap will bring some goodies, probly wont be to imprezed with mine at the moment either, its getting there though and at least its driveable now!

[Guest S T E Y E]

could be bro?? 95 sti only 380 cc greys... the 96 v3 upwards went to the 440cc yellows

btw which turbo is that?? it looks to me like heat stress / starting to crack

[slystiguy]

surely they are more than 380cc, putting out 280ps at 12psi....

im running an ej20g td05 pretty sure its been rebuilt as everyone has said to me, 190kms you should have shaft play.... an its tight, everything is factory as far as I know

lol when you see mine I think you know what I mean eh.... your bc looks better than my car does regardless of its condition lol

[Guest S T E Y E]

well wat colour are they???

V1 and v2 wrx and wrx sti have grey top 380cc injectors standard

v3 sti is were they went to yellow 440cc

[slystiguy]

never had the manifold off, never had any problems so not needed. if thats what factory im to assume it must need bigger injectors!

All I know is that its a redtop ej20gdw5pe td05 555 engine with very high kms haha an the shell aint pretty herself. "hand built" by the sti team after wrx assembly line