Turbo Problems

[HotAirGN]

Blown Turbo (Can I still drive?)

The turbo in my car has finally blown. This explains the 20psi of pressure at start up and trickle down to 5psi. When my Oil line to the turbo is connected there is too much smoke and the car runs like crap. So I have disconnected the oil line and tapped my oil pressure guage in its spot. Now I get 70psi at startup. So my motor is fine. Can I drive the car the short distances I need to go to get it fixed or will I be doing harm bypassing the turbo?

 

[2QUIK6]

If the turbo seals are already gone and you are not going to try to rebuild it, then it won't hurt to drive it short distances without the oil line going to the turbo, just don't get in to any boost, the shaft will probably get destroyed pretty quickly that way.
Why not just remove the turbo and take it to get rebuilt or change it out rather than driving it anywhere?

 

[Bernie Steffen]

Alright here goes. Have 85 Gn. When I bought it it had Bad engine. Rebilt engine .040 overbore. Put back together as stock. When I started engine smoked real bad. Blown seals in turbo. Bought rebuilt turbo from Postons. Engine ran apporoximately 20 miles engine smoked again real bad Bad seals in turbo. My Question is could I have done anything to cause this? I unhooked fuel pump at tank and cranked engine til fuel pressure came up. Then started engine. Any thoughts. thanks for any info Bernie Steffen zstef@mchsi.com

 

[GNX423]

I would also disconnect the the return line, the bearings are going to get pretty trashed and you dont want the material going back into the engine. I would recomend changing it or at least attempt a rebuld yourself. I bought a rebuild kit for an 86-87 stock turbo for about $60 from a local garett supplier. not hard to rebuild at all.
Good luck with it.
Mike

 

[2QUIK6]

I think you meant in your post that you cranked the engine until oil pressure came up...
But, even though you have pressure, are you sure oil pressure is making it to the turbo shaft / from the oil feed line??
Sounds like you may not be getting enough oil to the turbo shaft, or maybe not draining correctly and floating the bearing/shaft and blwoing the seals.

 

[Bernie Steffen]

Turbo Trouble

Thanks for the info guys.. The original turbo had 109 thousand miles on it so I wasn't too surprised it was bad. The reason my cousin tore it down was because it was smoking. We thought the reason it smoked was because of busted ring lands. This engine also has uncontrolled boost. But I can't get it running long enough to try to find out what is causing this. Thanks again guys. Bernie Steffen zstef@mchsi.com