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Old 10-10-2018, 02:48 PM   #1
zdriver123
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Default Turbo Gaskets

Hey all,

It's been a while since I've played with a Volvo, and never with a Turbo. I'm just swapping a bad 13C with a good 13C and have a couple questions. I'm trying to find a manifold to Turbo gasket, and I would assume a downpipe gasket? I'm doing this for a friend, and am wanting everything to go smoothly. I tried looking on IPD and came up with nothing.

I'm guessing that's on me, Can anyone lend a hand?
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Old 10-10-2018, 02:51 PM   #2
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The Volvo manifolds have that funky step in it. They don't use a gasket. Same thing on the outlet, it is just flanged.
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Old 10-10-2018, 02:52 PM   #3
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You can use 8642450 for the turbo to manifold gasket.

No gasket is used on the conical turbo to downpipe connection.
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Old 10-11-2018, 02:02 AM   #4
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My machinist recommended engine paint between the turbo and manifold, it seems to have helped.
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Old 10-11-2018, 02:35 AM   #5
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Quote:
Originally Posted by VB242 View Post
My machinist recommended engine paint between the turbo and manifold, it seems to have helped.
Hmm Id be concerned about the O2 sensor depending on the paint. I think ceramic paint there would foul the sensor. I guess you could run a bad one for some break in then put a good one back in.
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Old 10-11-2018, 05:24 AM   #6
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Went to Hobby Lobby and bought a small piece of copper (4”x6”?) for $7 and made my own.
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Old 10-11-2018, 08:00 AM   #7
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Originally Posted by PhysSDK2 View Post
Hmm Id be concerned about the O2 sensor depending on the paint. I think ceramic paint there would foul the sensor. I guess you could run a bad one for some break in then put a good one back in.
I waited for it to dry, did not affect my wideband.
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Old 10-11-2018, 12:06 PM   #8
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Quote:
Originally Posted by quillc View Post
The Volvo manifolds have that funky step in it. They don't use a gasket. Same thing on the outlet, it is just flanged.
Correct.

Quote:
Originally Posted by oldschoolvolvo View Post
You can use 8642450 for the turbo to manifold gasket.

No gasket is used on the conical turbo to downpipe connection.
Adding a gasket between turbo and stepped manifold outlet can cause a wee exhaust leak.

Quote:
Originally Posted by VB242 View Post
My machinist recommended engine paint between the turbo and manifold, it seems to have helped.
Helped with what? Stock turbo + stock/unaltered manifold + tight nutz should result in an adequate seal.
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Old 10-11-2018, 12:55 PM   #9
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Quote:
Originally Posted by woodenpudden View Post
Adding a gasket between turbo and stepped manifold outlet can cause a wee exhaust leak.
I haven't had issues using the 8642450 gasket with a 13C and a 16T on a 90+ manifold. FWIW, it is spec'd for the 5cyl manifolds with the step.
https://www.fcpeuro.com/products/vol...642450#fitment
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Old 10-11-2018, 02:25 PM   #10
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Originally Posted by oldschoolvolvo View Post
I haven't had issues using the 8642450 gasket with a 13C and a 16T on a 90+ manifold. FWIW, it is spec'd for the 5cyl manifolds with the step.
https://www.fcpeuro.com/products/vol...642450#fitment
I can dig it, didn't look up the part number before to see
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Old 10-11-2018, 02:29 PM   #11
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Quote:
Originally Posted by oldschoolvolvo View Post
I haven't had issues using the 8642450 gasket with a 13C and a 16T on a 90+ manifold. FWIW, it is spec'd for the 5cyl manifolds with the step.
https://www.fcpeuro.com/products/vol...642450#fitment
Thats what I run on 5 and 4 cylinders
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Old 10-11-2018, 08:55 PM   #12
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Quote:
Originally Posted by woodenpudden View Post
Correct.



Adding a gasket between turbo and stepped manifold outlet can cause a wee exhaust leak.



Helped with what? Stock turbo + stock/unaltered manifold + tight nutz should result in an adequate seal.
Mine is machined flat for Chinese turbo with a metal gasket in between, it helped with minor weep/leak.
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