extremetoy

iTrader: (17)

im getting a lot of oil in the cold side of my tubing

i have a 6.0l with a rear mount tc76 return oil pump is a weldon 9200a a -3feed with a restrictor and a -10 return with a 45deg fitting off the turbo and about 1 ft of line between the turbo and return pump and 90deg fittings on the pump and oil pan and like 8 feet from the pump to the oil pan


pcv system is the ls6 valley cover and everything else capped and a breather on the pass valve cover

any help as to why im getting so much oil would be appreciated

thanks, Gary

elias_799

iTrader: (8)

turbo seals might be leaking, because return oil pump is not working ?

OUTLAWZ RACING

iTrader: (9)

Yep dose it leak oil when you shut it off? I would double check the check valve also you gonna need that. You cant restrict that down at all because of the nature of a rearmount.

extremetoy

iTrader: (17)

before the restrictor it would have a little blue cloud behind me under boost... i do not have a check valve, does it need one?

1BAD_LS1

iTrader: (36)

you need a check valve

extremetoy

iTrader: (17)

ok well i put a check valve in and it hasnt made it any better... it really only seems to happen when under boost... does my turbo need to be rebuilt?

RooRnZ28

iTrader: (14)

how much boost does it make?

i had a similar problem with oil in the intake only, but it was due to my wastegate being stuck open and it wasn't making any boost

The Beast

iTrader: (16)

How many miles are on the turbo? Take your air filter off and see how much play is in the compressor wheel.

great421

iTrader: (1)

As a guy new to turbos (my 96 LT1 has a STS kit), is any amount of oil in the cold tube considered "normal" or "acceptable"?

I thought an oil leak in any part of the turbo was bad?

Can anyone chime in on this?

OUTLAWZ RACING

iTrader: (9)

If you have a mass air meter zero oil should be in the cold side. If not you may get away with a thin I mean thin film of oil. On a rearmount there are a couple of things that will cause oil in the cold side. Weak return pump, Bad check valve, Worn turbo. I know some times using the sts harness for the oil pump that relay goes in and out causing the pump to fail and the come back on My advice is to source the pump in a seprate 12 v source and run a switch with a led light and a realy in side the car.I had mine done like that for over a year now.

great421

iTrader: (1)

Thanks for the info!

75tonyA

iTrader: (6)

Where does the check valve go?
On the feed or return?
Between what two parts?

1BAD_LS1

iTrader: (36)

on the feed side ( you could put a check valve on both if you want)..... i have the STS it and i normally cycle my key a few times to make sure the turbo is empty after i turn the car off.