Turbo Leaking Oil

GreenChevelleSS · 10-27-2005, 02:56 AM

My engine had excessive carbon build up in the cylinders and I figured it was the rings so I was thinking of pulling the block and putting in new rings and checking the bearings and all, but today I pulled one of the intake tubes for the intercooler because it was messed up pretty bad what do I find oil pouring out of the intercooler and that tube so I started thinking that it is the turbo causeing all the carbon buildup instead of the rings. What do you think, I highly doubt the turbos ever been rebuilt but the engine is relativily new but who ever built it wasnt very smart. So what do you think should I go ahead and pull the rest of the engine, ive already got the head off, or should I put it back together and rebuild the turbo? Is there a way I can test the turbo for leakage?

GreenChevelleSS · 10-27-2005, 11:54 PM

anyone have any ideas?

joel w · 10-28-2005, 02:26 AM

a little oil in the ic piping is normal (not pouring out) but a coating inside due to crank case venting back into the accordian hose before the turbo, Did it smoke when it was running last? describe it if it did.? when my turbo blew the oil seal, it was just a puff at first then next day it got worse as i let off on boost to an idle at speed it would smoke bad. bad enough i parked it for repairs. I havent heard of anyone actually having to install rings on these supras due to blowby, Not saying it dont happen but its not common that i know of? i guess it depends on your cash flow and what you plan is with the car, if your going for seroiuse power id pull it, but if your basically stock, i guess i would mic all the cyinders and look for sloppy pistons and if therewith in tolerences, slap it back together?? i got 157k on stock block and ive been at 10-14 psi for 2 yrs now woth no smoke issues ever..cept the turbo..

GreenChevelleSS · 10-28-2005, 02:55 AM

well i got the car with a blown head gasket and I havent heard it run yet. I got it very cheap and figured I could fix it pretty cheap and fast and use for a daily driver instead of my consistent 15mpg truck.
When I pulled off the intake tube that goes in between the intercooler and the turbo, enough oil poured out to fill a about a 4oz container and then when I set that tube to the side more oil came out of it.

Bullz_EyE · 10-28-2005, 03:08 AM

May I suggest a PCV Catch can breather?

GreenChevelleSS · 10-28-2005, 03:51 AM

Yea i dont think this much oil could come from the pcv.

GreenChevelleSS · 10-28-2005, 04:30 AM

I think im gonna go ahead and pull the engine anyway to check the bearings and rings. Any tips on pulling the engine?

Bullz_EyE · 10-28-2005, 04:37 AM

Quote:

Originally Posted by GreenChevelleSS

Yea i dont think this much oil could come from the pcv.

Over time you may be surprised...

EDIT: Did you read the link?

joel w · 10-28-2005, 05:34 AM

Ok, anyone here ever had bad rings? or massive blowby that wasnt a turbo seal? that caused that much oil in th IC?

is the turbo sloppy with endplay side to side? Was the old head gasket visably bad?

GreenChevelleSS · 10-28-2005, 12:28 PM

Yes it is visible. I have a picture on my website of the blown headgasket, you want to look.

Its not the rings that im gonna pull the lower end out for, its the bearings. I dont want to get it back together and have the lower end knocking or a spun rod bearing, how common is this on these lower ends?

10-27-2005, 02:56 AM	#1
GreenChevelleSS 3" Exhaust Join Date: Oct 2005 Location: okiehoma USA Posts: 70	Is my Turbo Leaking Oil ???? My engine had excessive carbon build up in the cylinders and I figured it was the rings so I was thinking of pulling the block and putting in new rings and checking the bearings and all, but today I pulled one of the intake tubes for the intercooler because it was messed up pretty bad what do I find oil pouring out of the intercooler and that tube so I started thinking that it is the turbo causeing all the carbon buildup instead of the rings. What do you think, I highly doubt the turbos ever been rebuilt but the engine is relativily new but who ever built it wasnt very smart. So what do you think should I go ahead and pull the rest of the engine, ive already got the head off, or should I put it back together and rebuild the turbo? Is there a way I can test the turbo for leakage? __________________ 1990 Toyota Supra Turbo 7M-GTE 1970 Chevrolet Chevelle SS 396 1996 Chevrolet Silverado Z71 www.cardomain.com/id/3115ultima Last edited by GreenChevelleSS; 10-28-2005 at 01:48 AM.

10-27-2005, 11:54 PM	#2
GreenChevelleSS 3" Exhaust Join Date: Oct 2005 Location: okiehoma USA Posts: 70	anyone have any ideas? __________________ 1990 Toyota Supra Turbo 7M-GTE 1970 Chevrolet Chevelle SS 396 1996 Chevrolet Silverado Z71 www.cardomain.com/id/3115ultima

10-28-2005, 02:55 AM	#4
GreenChevelleSS 3" Exhaust Join Date: Oct 2005 Location: okiehoma USA Posts: 70	well i got the car with a blown head gasket and I havent heard it run yet. I got it very cheap and figured I could fix it pretty cheap and fast and use for a daily driver instead of my consistent 15mpg truck. When I pulled off the intake tube that goes in between the intercooler and the turbo, enough oil poured out to fill a about a 4oz container and then when I set that tube to the side more oil came out of it. __________________ 1990 Toyota Supra Turbo 7M-GTE 1970 Chevrolet Chevelle SS 396 1996 Chevrolet Silverado Z71 www.cardomain.com/id/3115ultima

10-28-2005, 03:51 AM	#6
GreenChevelleSS 3" Exhaust Join Date: Oct 2005 Location: okiehoma USA Posts: 70	Yea i dont think this much oil could come from the pcv. __________________ 1990 Toyota Supra Turbo 7M-GTE 1970 Chevrolet Chevelle SS 396 1996 Chevrolet Silverado Z71 www.cardomain.com/id/3115ultima

10-28-2005, 04:30 AM	#7
GreenChevelleSS 3" Exhaust Join Date: Oct 2005 Location: okiehoma USA Posts: 70	I think im gonna go ahead and pull the engine anyway to check the bearings and rings. Any tips on pulling the engine? __________________ 1990 Toyota Supra Turbo 7M-GTE 1970 Chevrolet Chevelle SS 396 1996 Chevrolet Silverado Z71 www.cardomain.com/id/3115ultima

10-28-2005, 02:26 AM	#3
joel w Lexus & 550's Join Date: Aug 2005 Location: In the shadows Posts: 506	a little oil in the ic piping is normal (not pouring out) but a coating inside due to crank case venting back into the accordian hose before the turbo, Did it smoke when it was running last? describe it if it did.? when my turbo blew the oil seal, it was just a puff at first then next day it got worse as i let off on boost to an idle at speed it would smoke bad. bad enough i parked it for repairs. I havent heard of anyone actually having to install rings on these supras due to blowby, Not saying it dont happen but its not common that i know of? i guess it depends on your cash flow and what you plan is with the car, if your going for seroiuse power id pull it, but if your basically stock, i guess i would mic all the cyinders and look for sloppy pistons and if therewith in tolerences, slap it back together?? i got 157k on stock block and ive been at 10-14 psi for 2 yrs now woth no smoke issues ever..cept the turbo..

10-28-2005, 03:08 AM	#5
Bullz_EyE 3" Exhaust Join Date: Oct 2005 Location: San Diego, CA Posts: 238	May I suggest a PCV Catch can breather?

10-28-2005, 05:34 AM	#9
joel w Lexus & 550's Join Date: Aug 2005 Location: In the shadows Posts: 506	Ok, anyone here ever had bad rings? or massive blowby that wasnt a turbo seal? that caused that much oil in th IC? is the turbo sloppy with endplay side to side? Was the old head gasket visably bad?

10-28-2005, 12:28 PM	#10
GreenChevelleSS 3" Exhaust Join Date: Oct 2005 Location: okiehoma USA Posts: 70	Yes it is visible. I have a picture on my website of the blown headgasket, you want to look. Its not the rings that im gonna pull the lower end out for, its the bearings. I dont want to get it back together and have the lower end knocking or a spun rod bearing, how common is this on these lower ends? __________________ 1990 Toyota Supra Turbo 7M-GTE 1970 Chevrolet Chevelle SS 396 1996 Chevrolet Silverado Z71 www.cardomain.com/id/3115ultima

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