BLAAST

if it's a XSP turbo, it's exactly how they normally fail: they start whinning because the wheels are rubbing. It'S easy to verify, it, just remove the filter and check shaft play.

udaredme

XSP?

udaredme

well I just went outside and yanked my filter off..theres a pretty substantial case of side to side play..still spins freely, but sloppy-def more than what i would consider "normal". plus showing signs of oil seepage on both intake/exhaust sides, so the seals are fubarb'd too...damn its been a good day..hhahha

buk9tp

Check your TPS/base timing/ignition timing/fuel/map sensor/fuel filter/ injectors/etc to see if they're all working right. Also make sure its not tripping into limp mode. Just in case, instead of assuming its just the turbo. If it is the turbo, change it.

BLAAST

Yeah, such amounts of lateral shat play means that it already vibrated some decent wear and tear through the bearings as all the XSP turbos are know to do in the first hours of use. THey're fun to work on!!! they are always super clean and shinny!!

if it'S a t3/t4 replica, I can "garrettize" it no problem and warranty it.

Just make sure it's not a ------- "SUPER T-70"... There's no garrett internals that fit in those and I CAN'T make them reliable.

Obscene_CNN

I agree with the diagnosis that your bearings are shot. Whether its due to lack of balance or lack of oil remains to be determined but as far as the reputation of the maker I would lean toward it not being balanced.

When a turbo makes noise its wasting energy that could be used for making boost. Since the energy comes from backpressure in the exhaust, you have two things working against you. You are robbed of power by the extra energy it takes to push the exhaust out of the cylinder. You are also robbed by the fact that the higher back pressure to boost ratio leaves more exhaust gases in the cylinder which in turn displace intake charge.

2poor2tune

yeah now that i think of it you said your turbo seemed louder. maybe there is rubbing going on or the bearings are gone so they are making the louder sounds. just a thought. dont know much about this stuff. good luck

BLAAST

Yes it rubs and it you insist too much, That XSP turbo will eventually GRENADE. i have seen that happen many times!

After rubbing for a while, the shaft gets loose enough to clog against the inside of the housing and then: CRack! THe shaft is broken and wheels all chewed up. with a nice aluminum-oil soup in your intake pipe!
It makes the rebuild even more expensive because then a replacement compressor wheel is needed on top of the shaft, internals and thrust system!!

But don't worry i think XSP turbos have good housings!! Yes!!! They don'T seem to crack like the garrett ones!!! And the price of a complete XSP turbo is LESS than just a compressor housing from garret!! (MSRP = 229 $)

udaredme

all that has been gone thru and lots of that changed..did major/minor tune up stuff to eliminate possible problems

udaredme

its getting oil, thats not the issue..i would say balancing as well as the main culprit..so..im gonna see if i can borrow my friends garrett since he has a hole in his block..and sent the bastard to you for a rebuild..