Date: Wed, 19 Feb 2003 19:27:26 GMT
From: Paul Halliday <>
Subject: Re: Saabism IS a disease

in article b30gkv$1h4hdr$, at wrote on 19/02/2003 17:58: >>> What colour is the smoke? White, or blue? Does it stay that way >>> even after it's warmed up? >>> different (if you can get the damn bolts loose). > >> The smoke is white, thin wispy, on a good run it clears when warm, but >> from idle to about 2k revs, if the thottle is dropped off, I get a small >> cloud. not a big headgasket mess of smoke, and no oil or water loss. > > I'm not sure what, if anything, to make of that. If you're not hearing > gravelly noises from the turbo (a bit of whine is normal and OK), I'd > keep an eye on it but not get overly concerned. If/When it does go, might > not be a bad idea to retrofit it to a water-cooled turbo. I have one > here in my basement, but I'm on the wrong continent to do you much good. I think he'll know when the turbo has gone south! It sounds like a helicopter. If he pulls the waste hose off the APC solenoid and ramps it up to full chock, the point at which it starts screeching is the kind of noise present when the fins have expanded or the outer housing shrunk. I have heard this noise three times now on Saabs. 1. When my top hose blew over the turbo housing, cooling it quicker than the internals. [This was part 1 of my first 900 T8s road to death and decay]. 2. When (after I had decided that the car was fucked and wanted to see what the turbo would do), disabled the wastegate and took it for a fast, but short screech. 3. Looking at a mint 1987 T8 which had a one year old turbo that sounded like an Apache at low altitude. I think Carls turbo is okay. Ironing out the other things first will ease the situation and he can listen to the turbo properly after that. Paul

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