turbo help
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Senior User
Joined: Dec 2006
Posts: 303
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From: Henderson, Ia
turbo help
I have a little soot showing up on my turbo where the two halfs bolt together. I am planning on a new compressor wheel soon anyhow, what else do i need to address the soot issue. I have replaced a wheel before but thats as far as I have ever been into a turbo!
Logistics Pro
Joined: Dec 2010
Posts: 4,738
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From: Temperance, MI
If your stock donuts are leaking then you have two options. You can save a ton of cash and replace them with the felpro gaskets (the route I took) saved a lot of cash with the understanding I will have to do it again down the road. The way I look at it is the stock gaskets lasted 10 years and the felpros are better than stocks. Or you can put a set of bellowed up pipes on it and be done with it forever
Freshman User
Joined: Sep 2007
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I had the same signs of soot show up in that spot on my new BD Turbo Thruster II right after install.....come to find out one of the 4 bolts that hold the two halves together had broken off. 
Soon after another bolt snapped and popped out of it's hole too.
Your issue may differ but I'd make sure those bolts are in place and torqued. Good luck.
Soon after another bolt snapped and popped out of it's hole too.Your issue may differ but I'd make sure those bolts are in place and torqued. Good luck.
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Senior User
Joined: Dec 2006
Posts: 303
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From: Henderson, Ia
It's not on the backside....... I haven't looked real close yet might be some there also. Its where the two halves come together. Is there any kind of o-ring or gasket there, or just bolted together and the bolts are loose, or broken?
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Veteran/Sheepdog
Joined: Feb 2012
Posts: 6,047
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From: Western AR
I just removed and rebuilt my turbo today. What are you talking about when you say "the two halves"? We seem to be confused. There are three parts to the turbo. compressor housing (aluminum part you see all the time), the center cartridge and the exhaust housing. You can't really see the center cartridge very well while it is on the truck, and you can only see part of the exhaust housing. Both of these are cast iron. You have any pics? I just posted some in the thread I am running while I am doing my weekend mods and maintenance.
If you are talking about the compressor housing, yes...there is a gasket that fits in between the "two halves". Some people add silicone in there with the gasket for a better seal ( I do not). If that gasket is missing, you will get oil from the CCV spin out between the back plate and the compressor housing. There will never be soot in that area.
If you are talking about the compressor housing, yes...there is a gasket that fits in between the "two halves". Some people add silicone in there with the gasket for a better seal ( I do not). If that gasket is missing, you will get oil from the CCV spin out between the back plate and the compressor housing. There will never be soot in that area.
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From: Hampstead, NC
Lead Driver
Joined: Mar 2000
Posts: 9,359
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From: Hampstead, NC
Yes they are Mike.
I don't have any handy besides that one.
The last turbo I worked on had all 4 bolts backed out on the exhaust housing. There was just a SLIGHT exhaust leak there......
I don't have any handy besides that one.
The last turbo I worked on had all 4 bolts backed out on the exhaust housing. There was just a SLIGHT exhaust leak there......
Veteran/Sheepdog
Joined: Feb 2012
Posts: 6,047
Likes: 110
From: Western AR
Black Rustoleum 2000° high heat on exhaust housing and DEI hi-temp 1500° silicone coating on compressor housing (aluminum colored). I will also be using that silicone coating on my up pipes
Fleet Mechanic
Joined: Dec 2010
Posts: 1,546
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From: Wellington, Co
Thanks. Always curious how well stuff holds up.