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JMA-RUF's Avatar
 
Join Date: Dec 2005
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Turbo Merge Collectors?

If I was to cut and swap the merge collector on an aftermarket 930 header, so I can use a T4 turbo on it, who sells the best merge collectors?

Also, if anyone knows off the top of their head, what's the part # that will suit a 930 application?
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James
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Old 01-31-2007, 01:34 PM
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Burns Stainless? I think they're the best, from what I've heard. Be prepared to spend a few hundred for one tho
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Merv
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Old 01-31-2007, 02:36 PM
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I take it I'd need a 3 into 1 merge collector? One is for the wastegate pipe?
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James
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Old 01-31-2007, 02:52 PM
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You might also consider talking to Ben of M&K exhaust. His handle on here is MB911 as he is a welder and has did similar to his own exhaust with adding the T4 flange.
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Luke S.
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Old 01-31-2007, 03:28 PM
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Burns are, hands down, the best AFAIK. Burns Stainless Their collectors are designed with ultra expensive CFD software and are about as nice as it gets. As far as a part #, I really don't know. You'd have to measure your setup to determine what size/length will best work.
Old 01-31-2007, 06:36 PM
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Again, Burns Stainless. You won't find a finer collector anywhere. Download their X-design form and fill out the necessary information. they will build a collector to suit your application that will be second to none. Be prepared for a hefty bill(~$2000+) for anything made in 321 stainless and TIG'ed by them for a pair of header collector and a turbo collector.

Your merge collectors on the headers (each side) will be a 3-1 style, your turbo collector will only have two inlets, one for each side, and they can factor in a dump to attach a wastegate flange to it if you'd like to have an equal pressure dump(to equalize exhaust pressure in each manifold, unlike stock 930/965 setups).

Talk to Vince. Great guy and he'll get you what you need....
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Adam Hennessy
Old 01-31-2007, 06:49 PM
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I was quoted $356, which is a T4, 2-1 merge collector.
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James
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Old 01-31-2007, 06:58 PM
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Sorry I was thinking he simply wanted to convert the T3 to T4 with increased efficiency. If you have an off the shelf header, I wouldn't think a $2000 collector is appropriate. If you have custom quality made headers then I agree that Burns has little rival in headers/collectors of any sort.
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Luke S.
72 RS spirit 2.7mfi, 73 3.2 Hotrod on steelies, 76 993 3.3efi TT, 86 trackrat, 91 C4s widebody,02 OLA winning 6GT2, 07 997TT, 72 914 v803996TT
Old 01-31-2007, 07:00 PM
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Luke, I'm planning to cut up a set of off-the-shelf 930 turbo headers so I can fit a T4 turbo to it, so that's the reason why I want a 2->1 merge collector with T4 flange to replace the T3 one on the 930 headers.

There is no way in hell I'm paying USD$2k for all new merge collectors. I'd rather have a custom set of 1 5/8" headers built locally for that price
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James
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Old 01-31-2007, 07:05 PM
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Quote:
Originally posted by JMA-RUF
Luke, I'm planning to cut up a set of off-the-shelf 930 turbo headers so I can fit a T4 turbo to it, so that's the reason why I want a 2->1 merge collector with T4 flange to replace the T3 one on the 930 headers.

There is no way in hell I'm paying USD$2k for all new merge collectors. I'd rather have a custom set of 1 5/8" headers built locally for that price

I understand now.......you can also try Woolf Aircraft. Woolf actually supplies Burns with all their material, and produces off the shelf collectors too. http://www.woolfaircraft.com/ ALOT cheaper than Burns.

I've tig'd up headers before to accept T4 turbine flanges. Nothing as fancy as Burns, but get the job done efficiently. I should have made a jig for that setup. Shouldda wouldda couldda as they say If you're handy with a tig, or even mig, it's actually not all that hard to do yourself. I believe Woolf even sells pre-swagged mandrels so that you can make a factory slip joint style collector that will seal positive and expand with head so it doesn't stress and crack over the thermal cycles Fun stuff...
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Old 01-31-2007, 07:24 PM
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