Please Help ????

927mgtepat

Banned
Jan 11, 2006
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Brighton, MI
Ok, first sorry that this is long. :aigo: I finally got my friends 88 Turbo all back together after the engine was messed up by a local shop. I completely rebuilt everything from the ground up. It has got all new Toyota bearings and rings,and a 2 mm HKS metal head gasket. The head was sent out and redone by Sound Performance who took it all apart in the first place. I had the block also cleaned, decked and lapped. It has ARP studs toque to 90 Ft pounds. Here is the problem. He is running and SP61 GT turbo. After the compression test came out good (150 even) we started the car. It ran great, no problem, no leaks, we drove it for about 2 miles and after we let off the gas we got LOTS OF SMOKE, it is defiantly oil burning. We checked the compression again and all is good, and the plugs show no sings of burnt oil. We have 20W50 in it as of right know to break it in. He had the same problem when he got the car back from sound performance the first time before the took it all apart, but that was on the old CT-26 and before we redid everything. All I can think of is it is either the turbo seal. Has any one heard of the relief valve in the oil filter housing getting stuck causing the oil pressure to get to high causing the oil to be pushed out the turbo seal. I'm loosing my mind with this thing, I just want to get it running so I can get it back to my friend. I'm going to call Tim at SP and see what he says. The Turbo is brand new and was primed right before starting.:1zhelp:
 

Vodkaknight

New Member
927mgtepat said:
Ok, first sorry that this is long. :aigo: I finally got my friends 88 Turbo all back together after the engine was messed up by a local shop. I completely rebuilt everything from the ground up. It has got all new Toyota bearings and rings,and a 2 mm HKS metal head gasket. The head was sent out and redone by Sound Performance who took it all apart in the first place. I had the block also cleaned, decked and lapped. It has ARP studs toque to 90 Ft pounds. Here is the problem. He is running and SP61 GT turbo. After the compression test came out good (150 even) we started the car. It ran great, no problem, no leaks, we drove it for about 2 miles and after we let off the gas we got LOTS OF SMOKE, it is defiantly oil burning. We checked the compression again and all is good, and the plugs show no sings of burnt oil. We have 20W50 in it as of right know to break it in. He had the same problem when he got the car back from sound performance the first time before the took it all apart, but that was on the old CT-26 and before we redid everything. All I can think of is it is either the turbo seal. Has any one heard of the relief valve in the oil filter housing getting stuck causing the oil pressure to get to high causing the oil to be pushed out the turbo seal. I'm loosing my mind with this thing, I just want to get it running so I can get it back to my friend. I'm going to call Tim at SP and see what he says. The Turbo is brand new and was primed right before starting.:1zhelp:

This is my car he is talking about. Last time I talked with pat, we had thought the relief valve in the oil filter housing might be stuck shut. Causing the oil pressure in the engine to either keep the oil from going down the return pipe, or maybe oil is being forced up into the turbo and past the seal. Cant check it now cause its fuckin dark outside. Any suggestions/help would be appreciated.
 

Vodkaknight

New Member
IJ. said:
If the relief were jammed it would have either Burst the Filter or more commonly spat the Filter O-Ring out either of which would get your attention ..

Well if its not the valve causing the problem, what would cause two turbos to blow on the same engine, one right after the other and even on a fresh rebuild? The SP61GT I have is brand new and just put on today. Gonna pull the exaust off the turbo to see if its leaking oil from the turbo in the morning. Then I can know for sure if its the turbo. (looked @ my old ct-26 and it appears to have a shitload of oil on the exaust turbine)
 
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IJ.

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Mar 30, 2005
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Turbo's don't "Blow" they're actually a really simple device and they don't have rubber lip seals that can dislodge so odds on if you correct the issue the Turbo will be fine!

They run a piston ring seal sometimes a Carbon face seal and a Labyrinth seal my "guess" for what it's worth would either be the Return or the PCV system has been reengineered by someone well meaning.....
 

Vodkaknight

New Member
IJ. said:
Turbo's don't "Blow" they're actually a really simple device and they don't have rubber lip seals that can dislodge so odds on if you correct the issue the Turbo will be fine!

They run a piston ring seal sometimes a Carbon face seal and a Labyrinth seal my "guess" for what it's worth would either be the Return or the PCV system has been reengineered by someone well meaning.....
Alright, thanks for clarifying that for me, i dont really know much about turbos but i can understand what you just said. I think pat and I might check that tomorrow, unless he already has (not sure what he has done yet) hes done most the mechanical work for me.
 

IJ.

Grumpy Old Man
Mar 30, 2005
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If the motor has excessive blowby or the PCV is plumbed incorrectly the Return won't be able to drain as it's gravity flow, any restriction/increase in crankcase pressure will cause the Turbo to flood and the Oil will find it's way past the Labyrinth seal causing mucho smoke.

Just throwing this out as a possible cause as it's highly unlikely that 2 Turbo's had the same fault so you need to look at what hasn't changed each time it's ran.
(Too much Oil in the Pan will cause this as well or too low a return into the pan in NA/t's)
 

Vodkaknight

New Member
Pat contacted Sound Performance, since they are the ones who built the turbo. They said cause since its been sitting for over a year, moisture could have gotten into the turbo and fubard the seals. OR the valve stem seals could be bad, however wouldnt the valve stem seals in the head cause oil to be on the plugs? And wouldnt it be different color smoke, and happen all the time?
 

927mgtepat

Banned
Jan 11, 2006
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Brighton, MI
The other idea I had is it is the exhaust stem seals, Because it would make the greatest since that the same head that was redone by SP was on the block when the ct-26 was on it doing the same problem. Cause if it was the intake you would see it on the plugs, and there is nothing, were as if it is the exhaust it is not getting burnt in the engine but pushed out the exhaust.