The last reliabuilt 5103838 turbo for that engine was 1082.64 in 11/08
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Thread: Turbo Leak 671 TI
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Re: Turbo Leak 671 TI
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Oops!!!
Okay, I'll trade you two apples for this orange here.
I checked the part numbers and Dave is right. The turbo I was working with was from a 6-71TIB. Ignore everything I said about the price. Sorry.--- The poster formerly known as Scrod ---
I want to live in Theory, everything works there.
1970 36C375
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04-20-2009 10:05 PM #43Senior Member
- Join Date
- Nov 2006
- Posts
- 160
Re: Turbo Leak 671 TI
Okay, received the rebuilt turbo, had the exhaust manifold extension milled a couple thousands to remove corrosion. I have a few assembly questions - DD 671 TIs
1. Do I use anything on the turbo oil supply gaskets? Any sealer?
2. Do I use the Silkolene only on the turbo to exhaust elbow connection? V Clamp setup.
3. I have two metal gaskets, one for the exhaust manifold to extension connection(round metal folded over seam) and one for the extension to turbo connection(rectangular with a ridge in it). Any sealer or compound on those connections? Is there a preferred gasket direction in regards to the ridge or the folded seam?
4. I would like to use some high temp bolt lub on the bolts holding the turbo to the exhaust extension and the allen screw/bolts holding the exhaust extension to the engine exhaust manifold. Product recommendations?
thanks johnJ Dickson
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Re: Turbo Leak 671 TI
The oil supply should be threaded. I would use the threaded fitting and not the adapter plate. If you want to use the plate, I always assemble with a dry gasket. Ditto for the drain.
As I have mentioned before, the Silkolene formula has changed and everything I have used it on since the change has leaked within about 2 years. I would use some muffler sealer from the auto store for the elbow to turbo joint.
Get a CAT turbo base gasket for the turbo to arm connection and toss the shim GM gasket.
Use a new marmon clamp.
The gasket from manifold to arm goes on dry also.
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Re: Turbo Leak 671 TI
If its gasketed you don't need (or want) Silkolene. That stuff is for places where you have a metal-to-metal seal and its imperfect (if its not imperfect it will seal itself within minutes due to very small amounts of carbon in the exhaust forming the seal.)
http://www.denninger.net - Home page with blog links and more
http://market-ticker.org - The Market Ticker
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04-21-2009 01:35 PM #47Senior Member
- Join Date
- Nov 2006
- Posts
- 160
Re: Turbo Leak 671 TI
What is the recommendation for the bolts, is there a high temp product to put on the bolts? Also, reading on boatdiesel.com it sounds like there should possibly be a gasket between the turbo and exhaust elbow in the counterbore flange? What say the experts?
tx johnJ Dickson
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Re: Turbo Leak 671 TI
no gasket.
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Re: Turbo Leak 671 TI
I use a little high-temp anti-seize on the flange bolts. It may not help but it won't hurt.
On the metal-to-metal joints I use a VERY SMALL amount of Silkolene. If there's a gasket, no sealer.
But I have some of the old stuff - if the reports of the formula change are true I have no idea if the new stuff is any good.http://www.denninger.net - Home page with blog links and more
http://market-ticker.org - The Market Ticker
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