Gt38 rebuild

dustinz85 · May 20, 2013

I installed a ww2 in my stock turbo, there was a little shaft play in the turbo. When I went to spin it in the truck there was a spot where it barely rubbed. When I started the truck there was a slight squeak every now and again. I guess it needs rebuilt. Or did i fubar the install somehow. Shaft play was minimal but still would move a hair up and down. I really dont want to run that truck like that .Where can I get a rebuild kit for it?

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sniper_101 · May 21, 2013

http://www.riffraffdiesel.com/mm5/m...t_Code=740659-0008&Category_Code=F731-TRB-TRK

The rebuild is really an easy process if you watch how you disassemble it.

lincolnlocker · May 21, 2013

so you pushed it up and down and side to side and a spot rubbed while pushing on it and spinning it at the same time? is there any in and out play at all?

live life full throttle

dustinz85 · May 21, 2013

lincolnlocker said:
so you pushed it up and down and side to side and a spot rubbed while pushing on it and spinning it at the same time? is there any in and out play at all?

live life full throttle

I didn't notice any rubbing when I had the turbo on the bench but I really didn't spin it much, only when I was almost done I spun it and there was a stiff spot almost. But no, no in and out play

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dustinz85 · May 21, 2013

sniper_101 said:
http://www.riffraffdiesel.com/mm5/m...t_Code=740659-0008&Category_Code=F731-TRB-TRK

The rebuild is really an easy process if you watch how you disassemble it.

Thanks! This is where I thought I saw it, bit couldn't remember

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lincolnlocker · May 21, 2013

if you cant push side to side or up to down and hit the housing then its fine... especially if there is no in and out play....

live life full throttle

dustinz85 · May 21, 2013

lincolnlocker said:
if you cant push side to side or up to down and hit the housing then its fine... especially if there is no in and out play....

live life full throttle

It just touches the housing to make noise in one spot, up and down movement. I ordered a rebuild kit and decided to do the pedestal for another 100 while it is out. I don't want to ruin that new wheel, maybe that is why my boost numbers have been lower.

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lincolnlocker · May 21, 2013

ok so it does contact it then... yeah thats not good..... i just read it as you could push on it and it wouldn't hit the housing but just had a stiff spot in it while spinning it and pushing on it at the same time... either way, a rebuild wont hurt it a bit.

live life full throttle

dustinz85 · May 21, 2013

lincolnlocker said:
ok so it does contact it then... yeah thats not good..... i just read it as you could push on it and it wouldn't hit the housing but just had a stiff spot in it while spinning it and pushing on it at the same time... either way, a rebuild wont hurt it a bit.

live life full throttle

Yeah that's that I figured for 70 bucks, it can't hurt a 188k turbo. The bad part is, I have to drive it all this week to work. Hope I don't FUBAR that new wheel. It shouldn't it was barely touching it.

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fbilly420 · May 21, 2013

If its touching the housing i wouldnt run it.

lincolnlocker · May 21, 2013

fbilly420 said:
If its touching the housing i wouldnt run it.

very true but if he is pushing really hard to make it touch, then he may have some time but it should still never touch.

live life full throttle

Charles · May 21, 2013

The 94mm wheel in my GT55 snuggled up with the housing real nice a while back when I lost lube oil for a second. Apparently if it's a smooth rubbing it's acceptable to just dress the wheel up with some sandpaper, lol.

If you stay out of the boost it shouldn't hit unless the charger is way bad off. If it's that bad you should hear it contacting when you shut the engine off and it's spinning down.

dustinz85 · May 21, 2013

Charles said:
The 94mm wheel in my GT55 snuggled up with the housing real nice a while back when I lost lube oil for a second. Apparently if it's a smooth rubbing it's acceptable to just dress the wheel up with some sandpaper, lol.

If you stay out of the boost it shouldn't hit unless the charger is way bad off. If it's that bad you should hear it contacting when you shut the engine off and it's spinning down.

LOL yeah above 25 psi I can hear contact I'm going to try and baby it til Saturday lol my parts should be here by then.

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dustinz85 · May 30, 2013

Is there any write ups on this? Parts came in today, I may make one if there isn't one already out there.

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lincolnlocker · May 30, 2013

Here ya go man! Pretty easy to do. http://www.riffraffdiesel.com/mm5/RESOURCES/Riffraff_Diesel_GTP38_Rebuild_Instructions.pdf

live life full throttle

dustinz85 · May 30, 2013

Thanks!!

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lincolnlocker · May 30, 2013

No problem!

live life full throttle

dustinz85 · Jun 9, 2013

Got done with the rebuild today, truck seems to have a 6.4 turbo sound when I leave over the throttle and boost bleeds off. I installed a ebpv delete outlet and ww2 with the rebuild.. is this normal? Rebuild went smooth. I'm at a lost, seems to be making slightly lower boost #s. Checked for exhaust leaks and didnt see any soot yet

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