S4 manifold
04-12-2013, 02:02 PM
#3
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https://www.miataturbo.net/prefabbed-turbo-kits-3/my-s4-manifold-delema-dilemma-you-mean-34923/page2/#post414048
According to this post original begi s4 = ebay s4.
According to this post original begi s4 = ebay s4.
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04-12-2013, 02:08 PM
#4
https://www.miataturbo.net/prefabbed-turbo-kits-3/my-s4-manifold-delema-dilemma-you-mean-34923/page2/#post414048
According to this post original begi s4 = ebay s4.
According to this post original begi s4 = ebay s4.
they're the same design, because one is a knockoff of the other, but not the same quality or material
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04-12-2013, 03:23 PM
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https://www.miataturbo.net/build-thr...e2/#post992615
All is not lost, Begi has come up with a fix.
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04-13-2013, 03:50 PM
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Interesting idea 18psi. So which different metal would that be? Any specifics?
http://www.bellengineering.net/produ...products_id=40
http://www.bellengineering.net/produ...products_id=40
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04-15-2013, 04:48 PM
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MX-5 Miata Forum - View Single Post - Turbo- Cast manifold VS Welded Stainless
OP, irregardless of where you get the thin wall S4 from 40% fail even when supported correctly according to the manufacturer.
Please don't take this as I am dissing the S4 manifold. I'm not. It has it's place and purpose. But, I am honest and up front about how much or if it will crack. If you do not support a SS manifold, the failure rate is 100%. If you over support a SS manifold, the failure rate is 100%. If you support it just enough, like we do, the failure rate is about 40%. Hence, the extended warranty on it.
Stephanie
Stephanie
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04-15-2013, 05:28 PM
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But are they are different? Any definitive proof? I interpreted Corky's post to mean they are the same (as in the same).
In any case both versions crack in the same way and same time frame when the downpipe is supported correctly.
https://www.miataturbo.net/build-thr...e2/#post992615
All is not lost, Begi has come up with a fix.
In any case both versions crack in the same way and same time frame when the downpipe is supported correctly.
https://www.miataturbo.net/build-thr...e2/#post992615
All is not lost, Begi has come up with a fix.
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04-15-2013, 05:30 PM
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The new S4 should last for ever as it uses shed 40 mild steel but costs $$$ BEGi S4 Miata Exhaust Manifold 1990-2005 BEGi
A used thin wall s4 will probably not last. There are no readily available s4 replacement manifolds afik. I made my own for that reason. https://www.miataturbo.net/diy-turbo...e3/#post995562
I think your best option in this case is 1994 1995 1996 1997 Mazda Miata Turbo Manifold MX 5 1 8 | eBay[/URL]
The most important thing with the s4 is using a brace something like this one.
Miata Turbo S4 Manifold Support Brace BEGi
With luck it will last for a few years.
A used thin wall s4 will probably not last. There are no readily available s4 replacement manifolds afik. I made my own for that reason. https://www.miataturbo.net/diy-turbo...e3/#post995562
I think your best option in this case is 1994 1995 1996 1997 Mazda Miata Turbo Manifold MX 5 1 8 | eBay[/URL]
The most important thing with the s4 is using a brace something like this one.
Miata Turbo S4 Manifold Support Brace BEGi
With luck it will last for a few years.
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