IH8FORD

iTrader: (6)

Juts finished up my build in my cts V. Here's a link to my build
https://ls1tech.com/forums/forced-in...rbo-build.html
Have less than 100 miles on it and the turbo has taken a ****. It went to squalling and the best I can tell iy has locked up. Ill know tomorrow when I pull it. I've checked the oil feed and have oil going to the turbo. I run the restrictor that came with the turbo. I think its .035. Not sure what went wrong, I dont think it was the fault of the turbo, but maybe I didn't have enough oil flow. Any ideas?

Redbull87

iTrader: (3)

Check the oil and see if its clean,how did the motor run before the turbo locked up? Was it smoking out the pipes or anything abnormal for a warning sign things were going wrong?

IH8FORD

iTrader: (6)

no smoke out of the pipe. engine seems healthy and plugs look good.

sbcgenII

iTrader: (1)

Ball bearing turbo? .035 seems small for a journal bearing turbo.

IH8FORD

iTrader: (6)

I haven't measured the restrictor hole size but it looks to be about .060.

Tore the turbo apart.... looks like it was getting good oil flow,maybe. shaft is bent and bearings are fried. this turbo has a journal bearing on the exhaust side and a cheesy looking ball bearing on the compressor side.

coltboostin

Your "ball bearing" turbo is likely journal bearing, and should not have been restricted.

oscs

iTrader: (19)

Whoa now. Let's not get crazy with the logic up in here. Plenty of tards that will argue that one to the death.

IH8FORD

iTrader: (6)

At all? It has a .060 restrictor that came with it that I used. I took the the turbo apart it is a "ball bearing" but only on the compressor side( a little thin thing that is missing a ball bearing and looks to have came that way) they thinned out that part of the shaft tp put it in. The design looks horrible to me I think I would have been better if they hadn't put a BB on the compressor as I think that is what caused the issue. Comp wheel hit the housing and bent the shaft.

IH8FORD

iTrader: (6)

JoeNova

It happens from time to time, just like any other turbo.
I wouldn't have restricted it at all if there were any journal bearings in it.

dburt86

iTrader: (2)

i restrict my journal bearing ebay turbos and they have been fine for this season.

IH8FORD

iTrader: (6)

I think my problem stemmed from the bearing being made incorrectly, you can see in the pic

wildcamaro

iTrader: (15)

Glad to hear (read: sarcasm) since I'm in the middle of a build using a CX Racing T76 "ball bearing" turbo...so now you got me thinking whether i should run restrictor or not with a journal bearing turbine and ball bearing compressor side...

sbcgenII

iTrader: (1)

Make sure all the bearing is there lol.

Nali6.2

mass produced Chinese turbo... they have 0 product quality control. 1 of the reasons why they are so cheap. throw it in the garbage and get another ebay junker on there.

truckdoug

iTrader: (25)

that bearing doesnt look like its missing any *****.

IH8FORD

iTrader: (6)

I found the gt45 cartriges for 130.00 with the same exhaust impeller and smaller comp impeller. Going to use my housings and swap my larger impeller and maybe that'll work for now.Ill drop some money on a turbo when i make sure this problem was the turbos fault and not my own, due to that oil restrictor.

A buddy had a manual with a pic of the bearing and you are correct, they do come like that so I must have had an oiling issue.

IH8FORD

iTrader: (6)

The bearings are supposed to be that way i found out. And I feel I had an issue with my oiling system to the turbo, Just dont know what.

truckdoug

iTrader: (25)

i'd call cx and see what they say about restrictor sizing for this particular turbo

Game ova

Depends on his oiling system. As in HV/HP or not. Some people say they run 100psi to there turbos, and it's fine. But others benefit immediately from a restrictor, and no.....it's not always a drain issue.