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Hi all,

Looking for some feedback before I head down the expensive road of ripping off my exhaust manifold.

So I upgraded the std snail to a hypergear ATR43SS2 with relevant supporting mods, so far I have managed 16psi out of it, hit a brick wall due to slipping clutch on dyno and some other small issues, so a majority of the issues are all fixed bar one that is really driving me nuts as I want it sorted before it goes back on to crank it up.IMG_1485768063.601685.jpg.1354415ab33cc4

So I'm having issues with the gaskets that sit between the spacer and the manifold, so far have gone through three different type of gaskets that all just keep blowing out, one lasted about a week with relatively easy driving, one two days then the other about two weeks.

I've been told numerous fixes / could be caused to the issue.

The last resort is rip it off and check the surface of the manifold then if all fine to have it welded, I'm a little reluctant to pull it off as I know il be up for re-tapping the bolts etc etc.

Wondering if anyone has any feedback.

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https://www.sau.com.au/forums/topic/468858-rb25-manifold-gasket-issue/
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Random observation but the manifold spacer supplied with my ATR43SS3 is noticeably thicker than yours:

32094280372_7b399f184d.jpg

Maybe check with @hypergear which one it's meant to be, and/or if the thickness matters at all?

5 hours ago, ADM33T said:


It's just doing my head in for something that should be so simple.
But I guess when we start modifying it should be expected.

It's not really that you've modified anything.  It's not as though you're running monster exhaust manifold pressure.  But if you try to slap a slab of steel between 2 other surfaces and don't ensure that all 4 faces are straight and true (and collectively parallel!) then you're spinning the roulette wheel.

It's not really that you've modified anything.  It's not as though you're running monster exhaust manifold pressure.  But if you try to slap a slab of steel between 2 other surfaces and don't ensure that all 4 faces are straight and true (and collectively parallel!) then you're spinning the roulette wheel.


The other issue I guess is that il have to keep approx $400 aside for when I snap a bolt to get off, everyone I have spoken to has said that the bolts will def snap.

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