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EDIT: 951 exhaust manifolds...see last Post/Poll

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Old 03-28-2006, 12:27 PM
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MarkRobinson
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Default EDIT: 951 exhaust manifolds...see last Post/Poll

Highly considering making a new coated-stainless exhaust manifold for the 951, to Rennlister's specifications. Manifold will have v-band clamps for easy fitment/alignment, provisions to control "walking" since stainless moves around quite a bit, and both stock & Tial flanges for WG's.

So, If I can provide such a header for under $700, tell me what you want please.

Here's a sample of some of my work: I work with Boostlogic in making my 928-turbo system & other manifolds for them.

Mark.

Last edited by MarkRobinson; 03-31-2006 at 04:17 PM. Reason: Edit: new information & Poll
Old 03-28-2006, 12:35 PM
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Duke
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Equal length 4-1 headers with long primary runners for $700 and you just got yourself the first customer for those
Old 03-28-2006, 12:41 PM
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MarkRobinson
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can you elaborate on your 4:1 request & long runners please?

Yes, I know what you mean, but why you request this over the tri-Y design? Thanks!

Mark
Old 03-28-2006, 12:42 PM
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Ski
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Is this just headers or header/crossover to turbo...with v band clamps...elaborate and customer #2 might be here.
Old 03-28-2006, 12:42 PM
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Opeth
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Damn that seems like a good price, the SFR ones are 2g!!! definatley interested...
Old 03-28-2006, 12:47 PM
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Duke
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Originally Posted by MarkRobinson
can you elaborate on your 4:1 request & long runners please?

Yes, I know what you mean, but why you request this over the tri-Y design? Thanks!

Mark

To maximize exhaust scavenging in upper rpms. I want maximum power, not torque

I could never justify the cost for a new exhaust manifold if it still kept the OEM design.
Old 03-28-2006, 12:53 PM
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Duke
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Ah here is a perfect example of the design I'm looking for:



With long primary runners in the correct length maximum high rpm scavenging can be combined with "tri-Y" low range torque.
Old 03-28-2006, 12:53 PM
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I was thinking: 4:1 medium-tube header, professional-merged collector, V-band clamped to cross-under pipe & WG provisions & flange to turbo, two O2 bungs: one for factory, one for WB. Cost could be as high as $800 with everything, but hopefully cheaper. will have to build one first for pricing it out with my manufacturer.

Anyone know what ID's the primaries, collector/cross-under pipes are? For the Power most are makign who will want this manifold, I was thinking 1-3/4" primaries merged to a 2.25 collector. I think factory is 1-5/8 & 2" collector. Can anyone correct me?

mark.
Old 03-28-2006, 12:54 PM
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ah, ala DC sports it appears.
Old 03-28-2006, 12:55 PM
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I'll have to use a flexible joint, but they're not restrictive when placed out from the bends (turbulence & higher velocities on one side of the pipe).
Old 03-28-2006, 01:00 PM
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95Juan
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really? under 1k?


customer #3, depending on what it all looks like, lol.
Old 03-28-2006, 01:03 PM
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951Obsession: look at the supra manifold in my first post: just like that. SS, coated.
Old 03-28-2006, 01:10 PM
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95Juan
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Originally Posted by MarkRobinson
951Obsession: look at the supra manifold in my first post: just like that. SS, coated.

where's the jawdrop smiley?????



are you going to make more than 1 application? as in, one made for more street-driven "normal" cars, and a high-end one like Duke described? or will it all be high-end-of-the-rpm-range ones?


cuz i can always turn my 951 into "not normal", lol.
Old 03-28-2006, 01:12 PM
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depending on how they turn out you might have customer #4
Old 03-28-2006, 01:12 PM
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Including crossover? For less than $1K? Wow....

What about two stages? Id be interested at some point, but I dont want to sacrifice the down low...


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