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Old 04-09-2008, 04:52 PM   #1
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Default Greddy Turbo to DP gasket - yes again!

Yes I know there's a million threads about this but no one has successfully gotten the mitsu gasket to work but there was someone who tried and said it didn't. I had my DP and turbo thermal coated and there's an exhaust leaks between them. I'm guessing the thermal coating is what's causing the leak. Anyone who has a gasket is their car can tell me where to get one?

Thanks,

t.t.
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Old 04-09-2008, 05:17 PM   #2
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They coated the mating surfaces? I don't think that's right.
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Old 04-09-2008, 05:27 PM   #3
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yep, for the DP they coated it outside and in, the the turbo the removed the housing and coated that.
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Old 04-09-2008, 05:30 PM   #4
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the 3000GT VR4 is the correct one.
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Old 04-09-2008, 05:51 PM   #5
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I always heard a 300zx tt gasket works. can anyone confirm/deny?
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Old 04-09-2008, 05:52 PM   #6
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for the manifold to turbo....

footprint is a t25, outlet is a t04d.

300zx uses a t25, 2000gt uses a t04d.
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Old 04-09-2008, 06:03 PM   #7
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https://www.miataturbo.net/forum/sho...0GT+VR4&page=2

"savestheday" claims he bought the VR4 gasket and it didn't work
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Old 04-09-2008, 07:11 PM   #8
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Trey, I've been running no gaskets on both sides of the turbine housing for a long time and haven't had any leaks. If you have a way to lap them (800 grit sandpaper and FLAT piece of glass/MDF/etc) it'll work way better than any gasket.
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Old 04-09-2008, 07:15 PM   #9
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I'm going no gasket this time around, the 3rd one just had a blow through. **** gaskets, sand the **** off and bolt them together.

Vash-
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Old 04-09-2008, 07:28 PM   #10
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hmm ok I'll give lapping a try. Incase it doesn't work I ordered a gasket kit from ebay. It looks like a better fit than the 3000GT VR4

http://cgi.ebay.com/ebaymotors/Gredd...spagenameZWD1V
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Old 04-09-2008, 07:34 PM   #11
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Quote:
Originally Posted by trito View Post
hmm ok I'll give lapping a try. Incase it doesn't work I ordered a gasket kit from ebay. It looks like a better fit than the 3000GT VR4

http://cgi.ebay.com/ebaymotors/Gredd...spagenameZWD1V
I saw that auction too and wondered if it would fit, looks like it will.

I'm tired of the ******* gaskets either blowing through or just straight blowing apart. The side of my valve cover is a mess cause of the damn gasket.

Vash-
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Old 04-09-2008, 07:52 PM   #12
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Sand it and use the copper RTV and no gasket.
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Old 04-09-2008, 08:06 PM   #13
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Interesting...

That does look exactly like the downpipe gasket that comes with the Greddy kit, though I've never seen a gasket between the manifold and turbo on a Greddy before. One presumes that the mating surfaces of those two components are sufficiently flat...
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Old 04-09-2008, 08:15 PM   #14
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what's the original greddy gasket made of? the ebay one looks like multi layered sheet metal like the stock engine head to manifold gasket.
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Old 04-09-2008, 08:17 PM   #15
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I can't remember if it was a single layer or multi-layered, but it's all metal.
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Old 04-09-2008, 09:18 PM   #16
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Quote:
Originally Posted by BenR View Post
Sand it and use the copper RTV and no gasket.
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Old 04-10-2008, 01:12 AM   #17
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The gasket from the turbo to the DP are metal and theres like 3 or 4 layers of them. ??????
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Old 04-10-2008, 12:00 PM   #18
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yes i believe thats correct i cant see mine right now because the heatshield is in place and im too lazy to remove it ???????
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Old 04-10-2008, 12:03 PM   #19
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Yea mine is also a layered gasket. This latest gasket had a blowout through the middle layers.

Vash-
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Old 04-10-2008, 12:21 PM   #20
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Y8s, are you running gaskets on your wastegate flanges? I think i'll sand them flat and run without them as well.
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