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-   -   Question about manifold to turbo gasket (https://www.rx7club.com/single-turbo-rx-7s-23/question-about-manifold-turbo-gasket-1103150/)

Skip2MyPou 07-20-16 10:19 PM

Question about manifold to turbo gasket
 
This is probably a really stupid question, but I am just wondering about a gasket I had received as part of my turbo kit. A small fraction of the exhaust seems to be blocked by the gasket. Will this hinder performance enough to be a concern? Should I go on and purchase another gasket?

Here is a picture of what I'm talking about.
Imgur: The most awesome images on the Internet

WANKfactor 07-21-16 01:33 AM

How does it look against the turbo? Chances are the turbo covers that bit anyway.

jetlude 07-21-16 08:51 AM

That gasket is designed for a twin scroll turbo and a divided manifold. It does not appear that the flange on the manifold is divided. Is the turbo twin scroll?

Skip2MyPou 07-21-16 02:33 PM

Here is what the turbo side looks like with the same gasket.

http://imgur.com/aQo8AwE

It seems like the flange on the manifold side has bigger holes than the turbo or is it just me?

The flange on both sides is divided. The turbo is twin scroll.

billyboy 07-21-16 02:57 PM

Probably should just use an undivided gasket anyhow...it's commonplace to burn up the bridge in those gaskets...unless your day job is chauffeuring Miss Daisy.

fendamonky 07-21-16 05:26 PM

You have a divided turbo and gasket, with an undivided manifold. It's not exactly ideal however you slice it. I'd go with billyboy though and just get a gasket for an undivided turbo/manifold, since that's your cheapest fix.

The correct fix would be to get both the turbo and the manifold to match with being divided or un-divided.

WANKfactor 07-21-16 06:52 PM

I didnt even notice that was an undivided in my bleary eyed state, lol. Was wondering why the centre section was so thin!

Skip2MyPou 07-21-16 07:49 PM

Excuse my ignorance, but this is a divided manifold, is it not? Is it that the flange on the manifold is just a different shape from the one on the turbo? Can I assume that it is a fix via altering the flange on the manifold, or welding a more suitable one on?

Imgur: The most awesome images on the Internet

fendamonky 07-22-16 03:49 AM

Oh, if that's your manifold than you're fine. The original pic looked like it was undivided. The gasket should be fine since it's not larger than the footprint on the turbo side.

Skip2MyPou 07-25-16 06:12 AM


Originally Posted by fendamonky (Post 12088074)
Oh, if that's your manifold than you're fine. The original pic looked like it was undivided. The gasket should be fine since it's not larger than the footprint on the turbo side.

Looks like there would be a slight blockage of the flow of exhaust from the manifold to the turbo due to the mismatch in shape of the flanges (the manifold side is slightly bigger than the turbo side. Am I wrong on this and that there wouldn't be so much of an issue?

FD7KiD 07-29-16 11:11 PM

where did you get your turbo kit from?


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