dkboyny11

I've had this turbo on the full-race stage 1 GT kit on the car for approx 5,000 miles now. I was driving it the other day and the turbo started to act weird, almost like a silicon tube popped off or something. I limped it home about a mile and looked for problems. Well after finding no couplers loose, I removed the air filter. When I tried to spin the turbo it was not spinning as easy as it used to. Not completely seized, but definitely something wrong. I had good oil pressure, and never had signs of any problems before. If you guys could maybe recommend some things to look at before I install my new turbo. Thanks for any help


Modified by dkboyny11 at 9:42 AM 2/25/2007

BoOsTeD C1

Do you have your coolant lines hooked up to the turbo?If so what are your sources?

shortyz21

where is the feed for the turbo taken from?

did u run a restrictor?

pics of drain.

dkboyny11

My oil feed was taken from the brace tee fitting that full-race supplied to be located where the stock oil light sensor was. I originally wasn't sent the restrictor in the beginning and had to send the turbo back to garret because I thought it was leaking through the seals or something. I think was was due to no restrictor. They rebuilt it anyway and sent it back to me. I ran it with a restrictor the second time with no problems. I could always hear the turbo spin forever after shutting the car off. The drain is the one supplied with the full race kit run to a Z10 oil pan. No kinks or anything smooth transitions. Also, I first has a #4 AN oilfeed line, but used a #3 oil feed line with the restrictor after the first problem.

*Boostwerks*

Contact a Garrett distributor, and ask them about they're CHRA replacement program. I just heard about this the other day from Garrett's news letter. If they will replace the CHRA or give credit for a new turbo unless they find a reason that the turbo was improperlly used or taken care of.

dkboyny11

I just found the source to the failure. I had a very tinny piece of silicone stuck in the oil feed line restrictor. Was I supposed to run a filter along the oil feed line???? Has anyone else experienced this before. Man realy sucks that a little piece of silicone F'd my $1000 turbo up. I don't even know if they will be able to fix any part of this thing. I could see broken pieces inside the oil housing on the return side. Mother F'er

rmcdaniels

I've had that exact problem before, a piece if excess grey silicone from the engine assembly got in there and it destroyed a $1000 ball-bearing turbo. With the tiny little restrictors that the BB turbos like, any little thing will clog it. Since then I used a -4AN line with a ATP restrictor fitting on the turbo and a wire-basket style strainer filter inline. NOS makes a nice aluminum one that fits inline with a -4AN oil feed line. Since then I've had no problems.

hopware

Thanks for sharing, that certainly gives me food for thought. Not exactly a scenario that I had considered, but another case of benefitting from others misfortune. None of us are as smart as all of us!

HiProfile

On my oil distribution manifolds, I always put a little screen in front of the outlet for the turbo. It goes from 1/4" NPT into a 1/4-1/8" bushing, to the 1/8"-to-AN fitting that I make into a restrictor; the screen is wedged in right before that first bushing, pushed in from the other side of the manifold.

dkboyny11

Thanks for the info. I have a GT28RS dual-ball bearing turbo as well. I had a little grey piece of silicone stuck in my .035" restrictor also. Man what a shitty thing to happen. I guess it's just our luck

dkboyny11

Also, a great idea. Thanks for the input, but I think I would feel better with some sort of in-line filter.

dkboyny11

Can you show me the exact filter from NOS that you are using on the oil feed line. The only one that I found was a high pressure Nitrous filter(aluminum). Thanks

rmcdaniels

That's the one, it has a screen basket filter inside of it, works great as an oil filter for my turbo oil feed. The -4AN filter screws right in to a -4AN oil feed line, and it's easy to open and check the strainer. Here's a pic of it on my motor:

Sprockets

iTrader: (6)

I just bought this one:

There's a 10 micron stainless screen inside and -4an ends. It's overpriced, but a nice piece.

dkboyny11

thanks again, I just placed my order for the same filter.

eg:R

does the oil sandwich plate get filter oil to the turbo???

DRAGLS

the golden eagle one does.

Sprockets

iTrader: (6)

Unfortunately, the oil isn't always filtered no matter where the source is. If the oil filter is operating in bypass, then your turbo is getting unfiltered oil.