Weird Turbo oil leak

68skylark455

68skylark455

Larry the "Stroker"
Aug 7, 2008
1,091
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0
Texas
www.larrysperformancepalace.com
Anybody using a GT4202r Turbo kit? I have an oil leak coming from around the drain pipe on the bottom of the turbo-it was leaking there before I built this engine, I replaced the gaskets and its leaking again-only when you shut off the truck?wtf? It kinda looks like it may even be coming out from the exhaust side of the turbo housing by the v-band clamp. Any ideas-there was no oil inside the turbo housing when I had it off. Just wondering if anyone else had this happen? The guy I talk to at PPE where we bought the kit is out till monday.
 
Last edited:
paint94979

paint94979

Beer Nazi
Sep 18, 2006
11,715
8
38
37
68skylark455 said:
Anybody using a GT4202r Turbo kit? I have an oil leak coming from around the drain pipe on the bottom of the turbo-it was leaking there before I built this engine, I replaced the gaskets and its leaking again-only when you shut off the truck?wtf? It kinda looks like it may even be coming out from the exhaust side of the turbo housing by the v-band clamp. Any ideas-there was no oil inside the turbo housing when I had it off. Just wondering if anyone else had this happen? The guy I talk to at PPE where we bought the kit is out till monday.
Click to expand...

Talk to Dan@PPE
 
bullfrogjohnson

bullfrogjohnson

Big Girl!
Nov 20, 2006
4,167
1
0
39
Locust, NC
Mine leaks at the oil drain tube also, I have replaced my gasket twice now and it still leaks. It is just so damn hard to get those bolts really tight enough to crush the gasket!!! I am going to make a tool to get in there better. I believe an old distibutor wrench will work, i think I heard that from Pat.
 
RENODMAX

RENODMAX

Dead Wrong
Mar 4, 2008
3,602
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its not the gaskets. ive done a few of thes and its the tube where they weld the collar onto it to make it longer to accomodate bigger turbos. Had to braze mine.
 
V

vortecfcar

No longer a member
Jun 28, 2007
167
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I use a pivoting head ratchet wrench and I tighten them before I bolt the turbo to the pedestal. It's the first part of the turbo that I secure to the truck.

I've reused gaskets several times without leaks.

Might help somebody..

Nick
 
D

delle_54

New member
Mar 1, 2010
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I know this is an old thread but curious as to any other fixes. I have the same issue and looking for as much info or different possible repairs.
 
Burn Down

Burn Down

Hotrodder
Sep 14, 2008
7,092
28
48
Boise Idaho
On gaskets that are a pain to get to, or get the bolts tight, I use a spray contact cement on both sides to help hold the gasket in place & help it seal.

Something else to consider is the GT4202R needs to have the oil supply restricted, per Garrett.

Cat also has some new turbo gaskets that are metal with a rubber seal. I can't remember the part number off hand.
 
bullfrogjohnson

bullfrogjohnson

Big Girl!
Nov 20, 2006
4,167
1
0
39
Locust, NC
Burn Down said:
On gaskets that are a pain to get to, or get the bolts tight, I use a spray contact cement on both sides to help hold the gasket in place & help it seal.

Something else to consider is the GT4202R needs to have the oil supply restricted, per Garrett.

Cat also has some new turbo gaskets that are metal with a rubber seal. I can't remember the part number off hand.
Click to expand...

Part # please:D
 
RENODMAX

RENODMAX

Dead Wrong
Mar 4, 2008
3,602
0
0
I torque each side down little by little and haven't had a problem. Those gaskets do sound nice though Albert.
 
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