New Gt-ss Blown On Gtr @ 1bar

[bubble1984]

hi

im in ireland and thought you guys might be able to help with some knowledge.

i purchased 2 new hks gt-ss turbos on nengun for my friends rb26 engined hcr32. he has done 2 drift events so far....

yesterday he lost all boost and came into the pits. i could hear a rough bearing noise coming from the front turbo. ... no smoke.

anyway we had a look and the shaft has serious up and down play and sounds very rough when spun by hand even. bearing is gone id say...

just wondering if any of you have had faulty hks/garrett turbos. im thinking the turbo got starved of oil somehow.... but maybe its a faulty turbo.

any feedback is great. car is running 430hp @flywheel on 1bar. rev limit is 8000.

thanks

[R31Nismoid]

You sure you didnt bend any oil lines when installing the turbo etc?

Make sure they were all clean etc?

[tommis85]

Yeh I'm interested to see what caused it too. I'll be investing in a set of turbos in the near future which will be around the GT-SS or GT-RS / N1 size. I'll most likely be going with a set of Garretts (GT2560's or GT2860's depending on their badging)

These units would easily run a bar without problem? The boost level he was running definitely wouldn't have caused it???

The other day I was reading about oil restrictors on here....but you would've had that all sorted as you've no doubt had the turbos on their for a while?

[tommis85]

Yeh I'm interested to see what caused it too. I'll be investing in a set of turbos in the near future which will be around the GT-SS or GT-RS / N1 size. I'll most likely be going with a set of Garretts (GT2560's or GT2860's depending on their badging)

These units would easily run a bar without problem? The boost level he was running definitely wouldn't have caused it???

The other day I was reading about oil restrictors on here....but you would've had that all sorted as you've no doubt had the turbos on there for a while?

[tommis85]

oops

[jeffworld2]

for it to go that quick, i would say it was an oil/water starvation problem, or a serious overboost.

all you can do is take them off and have a look. hks or your supplier may look after you with a warranty if you can rule out the above

[700HP-GTR33]

Yeh I'm interested to see what caused it too. I'll be investing in a set of turbos in the near future which will be around the GT-SS or GT-RS / N1 size. I'll most likely be going with a set of Garretts (GT2560's or GT2860's depending on their badging)

These units would easily run a bar without problem? The boost level he was running definitely wouldn't have caused it???

The other day I was reading about oil restrictors on here....but you would've had that all sorted as you've no doubt had the turbos on their for a while?

There is a huge difference between those two turbo's...SS is for Street and GT-RS should only be used in drag or race.

As for your friends blown turbo's.

Likely causes.....as stated already

Oil/Water starvation.

Oil blockage in line.

I suspect though a few things could have gone wrong with the install.

To have only used them hard twice and they are rat shit leads me to believe the following causes also.

Turbo's may have been knocked with a hammer to re-align with the manifold and then again to fit the dumps...it is tight and may have been belted in.

Was it an engine out job?

Boost controller fault.

When your drifting you don't get to see the boost gauges...and they may not be correct if factory OEM.

What Boost controller are you using?

How was it set up?

Good luck with the warranty claim.

[bubble1984]

There is a huge difference between those two turbo's...SS is for Street and GT-RS should only be used in drag or race.

As for your friends blown turbo's.

Likely causes.....as stated already

Oil/Water starvation.

Oil blockage in line.

I suspect though a few things could have gone wrong with the install.

To have only used them hard twice and they are rat shit leads me to believe the following causes also.

Turbo's may have been knocked with a hammer to re-align with the manifold and then again to fit the dumps...it is tight and may have been belted in.

Was it an engine out job?

Boost controller fault.

When your drifting you don't get to see the boost gauges...and they may not be correct if factory OEM.

What Boost controller are you using?

How was it set up?

Good luck with the warranty claim.

thanks lads,

my friend took off his turbo today and the banjo (orifice) bolt (hks part no. 1408-ra020) on the turbo is blocked. he says the hole in the banjos are tiny compared to the OEM oil feed banjo holes.

the car is a drift car and that day it peaked at 1.2bar. he has a profec b spec II. the solenoid is weak in it i think as it spikes quite high momentarily. my own profec b doesnt do this.

anyway i assume a tiny bit of dirt clogged the tiny hole.

thinking of rebuilding the turbo with oem sized turbo oil feed banjo's

[Duncan]

can't do that mate, the restrictor is there to prevent too much oil getting to the core. You are probably better off looking into why there was something floating around the motor large enough to block an oil feed....was it bearing? ring? piston? plain old oil gunk?