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manifold to turbo seal

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gn1220

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Nov 11, 2001
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I had to remove my turbo from the pass. manifold and now it leaks. I pulled the nuts off, removed the oil line and pulled it up as far as I could, about 1/4" and there is no seal or gasket. I know this is supposed to be flush without a gasket but I don't think I can pull it all apart enough to file it all flat. Someone mentioned a copper gasket. Will this work well and if so, where can I get one? Any other ideas? What about pulling the drain tube? Do I need to worry about leaks when I put it back on, if I remove it? I am short on time but I want to do it right this time and I also want it to look good. TIA
 
I haven't had much luck with the copper gasket. I use the Turbo Riviera gasket that is graphite with no leaks. Some use Ultra Copper RTV smeared in there. The oil return line uses a paper gasket that you can get from GM (you will need to buy like 10:D to get one:( ).

Riviera gasket # 1261269
 
if you really dont want to have to worry about it pull yhe header and run a file or a hard sanding block across it till its flat again...you can also check the flange on the turbo while your at it...i hate gaskets..:eek:
 
Mines leaked with the copper gasket. I got good luck with the GM turbo gasket but had to dremel out the hole about 1/4".
 
My advice would be to do the job right, get the turbo pulled all the way out so you can inspect the flange surfaces. Mignt only need a light filing and use good Ultra Copper RTV. DO NOT use a gasket there. It wasn't designed for one, and if you do use a gasket in that place you'll warp the flange and will be doomed to always have to use a gasket, and even then won't be able to maintain a good seal for very long. Putting a gasket at the header/turbo flange is a loosing proposition all the way around.

As for the oil drain gaskets, yes, GM will give you paper ones that aren't worth a hoot!!
Here's the part number for the gasket that everybody should be using:
25537227. It's a very high quality gasket that's much harder and thicker (at least 1/16" thick). They will last several turbo swap outs, and will never leak, ever. I smear a very thin coat of RTV on one side, set it carefully on the drain hose flange and let it set over night, then smear a very thin layer on the top side just before setting the turbo in place. I'm not even sure the RTV is needed, but with it stuck to the drain tube like that it makes intall and alignment much easier.
 
Originally posted by TurboDave
My advice would be to do the job right, get the turbo pulled all the way out so you can inspect the flange surfaces. Mignt only need a light filing and use good Ultra Copper RTV. DO NOT use a gasket there. It wasn't designed for one, and if you do use a gasket in that place you'll warp the flange and will be doomed to always have to use a gasket, and even then won't be able to maintain a good seal for very long. Putting a gasket at the header/turbo flange is a loosing proposition all the way around.

As for the oil drain gaskets, yes, GM will give you paper ones that aren't worth a hoot!!
Here's the part number for the gasket that everybody should be using:
25537227. It's a very high quality gasket that's much harder and thicker (at least 1/16" thick). They will last several turbo swap outs, and will never leak, ever. I smear a very thin coat of RTV on one side, set it carefully on the drain hose flange and let it set over night, then smear a very thin layer on the top side just before setting the turbo in place. I'm not even sure the RTV is needed, but with it stuck to the drain tube like that it makes intall and alignment much easier.
Click to expand...
Dave,

You are an RTV freak:D I like gaskets and have had no leaks other than the copper one ever! I am not a big fan of RTV on the turbo return line at all and suggest using RTV sparingly on any surface that has exposure to your oil stream. It doesn't go well once in your oil passages or pickup! The Riviera gasket is the best out there, made just like the stock head gaskets and Fel-Pro 1400 exhaust gaskets.
 
I suppose you could RTV the heck out of it, but that's crappy. You need to take it off, file it down, and then put the right gasket on. You can get the gasket from gm, Kirban, Poston, a lot of places..
 
Dave, do I get that tube gasket at gm or a parts store? Thanks for all the help and I guess I will try to file it flat, seems like a better solution.
 
Originally posted by Intercooler
Dave,

You are an RTV freak:D I like gaskets and have had no leaks other than the copper one ever! I am not a big fan of RTV on the turbo return line at all and suggest using RTV sparingly on any surface that has exposure to your oil stream. It doesn't go well once in your oil passages or pickup! The Riviera gasket is the best out there, made just like the stock head gaskets and Fel-Pro 1400 exhaust gaskets.
Click to expand...

No, not actually. I just know where and how much to use. I definately DO NOT use gaskets where they weren't designed to be used. :(
Exhaust gaskets and turbo gaskets are IMHO NOT to be used usless it's and absolute emergency!

I do understand the oil vs. RTV issue, and don't allow the two to mix.
 
Originally posted by Steve Wood
Exactly, do it the way it was intended rather than sticking bandaids in there. :)
Click to expand...
Here we go:rolleyes: I guess the factory did everything perfect:rolleyes: Do you not think the factory setup leaks exhaust without gaskets? If you do I suggest you use your method and start yanking your oil pan, valve covers, etc... ;) It tightens up due to the heat but is it actually better than using a graphite gasket that sticks to both surface? I know they come from the factory that way but that doesn't mean I will flatten my heads and block and take my head gaskets out:eek:
 
OOps, guess you better run your own bs flag up! :D

I have three cars and none of them leak and none of them have gaskets where the factory did not put them.

I do admit to applying a very thin coast of high temp everytime I reinstall the headers and turbo, tho. :) My crossover pipes fit and don't leak either.

All three of my cars came with headgaskets, tho.

On the two engines that I have been into, I do use a single shim gasket with a very thin coat of clear silicone instead of using a composite gasket...yes, there are some things that can be done better than the factory did it.
 
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