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930 Header modify quest.

Greetings:

Has anyone modified their stock 930-Headers to 3 into 1 route. Very interested if anyone did it. Pics please....


This is what RUF did....964-Turbo.
Old 06-20-2008, 01:27 PM
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Why that looks like a Ruf RCT. I'm just finishing up a top-end on one of those...

The original Turbo exhaust is not THAT different from the RCT setup. The turbo is simply mounted a little closer to the collector of both banks on the RCT

Those are NA 3.6 heat exchangers. Ruf built a really nice "up" pipe to install the turbo where the catalytic converter used to reside. They then moved the NA catalyst to the original primary muffler location. It's kinda funny they are making 400hp through a stock NA cat. conv. designed for maybe 275 hp?!??
Old 06-20-2008, 01:54 PM
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Mike

What do you think is the best solution for the 930??? Where can I buy a 3-1 flange??? Or just get some pipes, do my own measuring and some good welding???

Opinion please....

thnxs.
Old 06-20-2008, 02:02 PM
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I don't see the advantage over stock Euro 930 exchangers. Bigger ID tubing?
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'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
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Old 06-20-2008, 02:09 PM
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This is what I have on my 930 custom exhaust system. It is custom headers with heat by MODE (Bob Holcomb). I really like the performance of this headers.

Old 06-20-2008, 02:52 PM
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Dai....

THAT IS SOME SERIOUS ART WORK!!!! WOW!!!

I am still working on coloring books..........................................
Old 06-20-2008, 03:10 PM
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Thanks. I didn't do any work on it. I just paid it through my nose.
Old 06-20-2008, 03:44 PM
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I can see why you paid some serious $$ for that setup....looks nicely done. Never seen heat exchangers designed like that. Do you have any dyno info on that setup? Very interested in your results. What exactly does that wastegate pipe configuration do?
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Last edited by Chuck Jones; 06-20-2008 at 10:03 PM..
Old 06-20-2008, 10:01 PM
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nice work indeed. I'm not sure, wjfk, what you are considering doing or even what your asking? Are you asking about "merge" collectors? versus stock flat factory style?
I would most likely agree w/ any advice Brian (rarlyL8) gives you... Especially when it comes to exhaust...
Old 06-20-2008, 10:33 PM
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Mike.....
What I am inquiring, is keeping the stock 930 headers (durability) and getting some piping runninng across into a 3 INTO-1 merge collector. Has this been done? Is it possible? Is it worth a try? Or just wasting time and money.

Durability factor is very improtant to me. Spending good money on BB and then falling apart in so many years frickin-blows.. Schnell,OBX,GSF, all look great......But will it hold up more than 5years.

I guess my answer is start a fabrication project and see what happens...

Thnxs.
Old 06-23-2008, 06:24 AM
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Chuck, here is the dyno info you requested. The dyno was done on DynoJet and the horsepower is WHP. This is with headers, turbo, muffler and intercooler replacement from stock. No other upgrade were done. This car has Euro fuel head.

Old 06-23-2008, 06:47 AM
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Reference your questions about the stock muffler....I have RarelyL8's Y pipe...and he "conspires" with Ben at M and K. They're both masters at this sort of thing.....Brian is the guy to ask about technical exhaust issues and questions.....but take note of his signature....."one crotchety old bastard".....actually he's a true gentleman and has been a tremendous help to me in building up my system.

You didn't explain what that unusual looking wastegate tube does....why is it designed in a sort of an angular T fashion open at both ends?? Must be for a particular sound? Brian sent me one of his stainless Zork tubes and it works great....looks great.
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1987 factory Slantnosed 930 Cabriolet/Guard's red
2002 Midnight Blue 996TT X50
1999 Iris Blue 996 (Dash fire burned and totalled 9/07)
Old 06-23-2008, 12:33 PM
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Chuck, I'm guessing that WG tube is just for show like the stock C2T one is.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 06-23-2008, 12:35 PM
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Gotcha Nathan.....thanx for the clarification.
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2002 Midnight Blue 996TT X50
1999 Iris Blue 996 (Dash fire burned and totalled 9/07)
Old 06-23-2008, 12:37 PM
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That is correct. The WG tube is just for show to balance out the dual exhaust look.
Old 06-23-2008, 01:46 PM
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I'm not understanding what it is you are trying to do. What is the 3 into 1 route you refer to?
The stock Euro / late-US / 965 heat exchangers shown above have 3 primaries per bank that murge into a 3+3 into 2 into 1 J-pipe configuration. I am unfamiliar with the Ruf modification but it looks like they place the turbo closer to the 3+3 junction.

Here is the stock Euro setup. What is it you are trying to change, the J-pipe?



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'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
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Old 06-23-2008, 05:04 PM
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Here is the 934 setup from another post, it's a bit different so thought it might be useful

Old 06-24-2008, 12:51 AM
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Brian...

Thanxs for your input....

My current exhaust is a euro-930 setup-no cat..I apologize for not being clear. As for your pic. Can the LEFT HEADER-IN THE PIC--Is it possible to fabricate a pipe directly to the merge collector. With that, then RIGHT HEADER IN THE PIC-Is it possible to cross over a pipe over, meeting the merge collector. So all 3 pipes leading into 1 merge collector? As seen with the Ruf pic. I know is not a 930 set-up.. But I think you know what I am getting at. I have never seen 930-RUF headers or if they make their own. What size piping would be optimal?

Do you think can it be done??? I beleive the oil resevoir small tank would have to be changed/relocated and a long braided oil line added...

Thank you for your time and input..
Old 06-24-2008, 05:53 AM
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Quote:
Originally Posted by wjfk32 View Post
Brian...

Thanxs for your input....

My current exhaust is a euro-930 setup-no cat..I apologize for not being clear. As for your pic. Can the LEFT HEADER-IN THE PIC--Is it possible to fabricate a pipe directly to the merge collector. With that, then RIGHT HEADER IN THE PIC-Is it possible to cross over a pipe over, meeting the merge collector. So all 3 pipes leading into 1 merge collector? As seen with the Ruf pic. I know is not a 930 set-up.. But I think you know what I am getting at. I have never seen 930-RUF headers or if they make their own. What size piping would be optimal?

Do you think can it be done??? I beleive the oil resevoir small tank would have to be changed/relocated and a long braided oil line added...

Thank you for your time and input..
I'm totally confused with what you are trying to do... Sorry.
Maybe you could sketch a pic, scan it and post the pic.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 06-24-2008, 01:14 PM
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