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Twins are more fun!
Join Date: Dec 2005
Posts: 639
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I'm looking forward to your TT shorty header products later on down the track
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James Carrera TT (3.3, Protomotive MAP ECU, EFI, GT2 EVO CAMs, Twin Plugged, Twin Turbo's) |
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03-11-2009, 07:57 PM
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Crotchety Old Bastard
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TT is custom due to the miriad of turbos and configurations. What can be done is use a V-band clamp on each collector for secondary pipe attachment. The rest of the assembly can then be completed on the actual car so turbo placement is perfect.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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03-12-2009, 05:50 AM
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Twins are more fun!
Join Date: Dec 2005
Posts: 639
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Quote:
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James Carrera TT (3.3, Protomotive MAP ECU, EFI, GT2 EVO CAMs, Twin Plugged, Twin Turbo's) |
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03-12-2009, 10:38 PM
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Registered
Join Date: Jul 2003
Location: Back in B'ham, AL
Posts: 3,459
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That sounds like the way to go to be really "semi-universal"
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03-13-2009, 03:32 AM
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Crotchety Old Bastard
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Also allows provision for normally aspirated application.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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03-13-2009, 04:09 AM
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Join Date: Jan 2007
Posts: 1,079
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You really should try to have heat exchangers be an option, not the rule, IMO. Those headers are too cool to hide with heat exchangers for some people.
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03-13-2009, 06:28 AM
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Crotchety Old Bastard
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Heat exchangers will be bolt on. That will allow easy replacement if damaged and the option to add later if desired.
If it isn't obvious, I like modular designs that allow options.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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03-13-2009, 07:04 AM
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Registered
Join Date: Jul 2003
Location: Back in B'ham, AL
Posts: 3,459
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Brian, you are the man!!!!!!!!!!!! And once more, let me know when you're ready to start testing...
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03-13-2009, 08:02 AM
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Macht Schnell
Join Date: Jun 2003
Location: PSL, FL
Posts: 861
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Absolutely Stunning!!
You and Ben can look in the Mirror and say, "We are the Guys we've been waiting for"!! .
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---Les Garten---85 930, Andial IC, GHL Headers, Fabspeed Dual, K-27 HF2, 3.4 JE Full Finned 7.5:1 CR, 964 CAM'd, Carerra 3.2 Manifold Cut/Flipped, Tec3r, Siemans 55#, GSF Fuel Rails, Clewett Crank Trigger, Clewett Cam Trigger,Dual Plugged, ARP Head Studs/Rod Bolts, Clewett Wires.Tial 46mm WG, Tial 50mm BOV, WEVO Shifter,934 Boost Gauge, Wideband EGO Sensor/Gauge, C2T Head Gaskets, '88 MB 300TE,BMW R100RT |
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03-14-2009, 09:06 AM
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Crotchety Old Bastard
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Got the first production mock-up finished this evening.
This one is welded (by Ben). Next one will be mandrel bent. Thin flanges were cut and spacers made to reduce the weight vs thick flanges. Getting closer ...   
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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04-20-2009, 07:07 PM
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Brian- that looks great! I just wish you made them 6 months ago as I just had a set made...
What size primaries are you going with? I did 1 3/4" primaries to 2 1/4" secondaries.
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Kris @ Tech9 86' 930/GT-40R Sold  94' Rustang GT daily (long gone) 2008 C6/Z51 Corvette |
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04-20-2009, 07:12 PM
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Crotchety Old Bastard
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These are 1.5" primaries. Plan to offer 1.625" and 1.75" as well.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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04-20-2009, 08:42 PM
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Crotchety Old Bastard
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Finished the prototype this evening. Fits snug and weighs a svet 5.5 pounds.
Now to reproduce it ...  
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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04-21-2009, 07:38 PM
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Registered
Join Date: Mar 2006
Location: Elk Grove, CA
Posts: 513
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Damn Brian that's might purdy and worthy of praise.....but "svet" is what comes off your brow as you're working in a hot shop welding stuff....."svelte" is the word for neat, cool, trim, suave, debonaire.
Now tell me you don't give a rat's A$$ and send me packing back to my room. Does this mean I can't get one at a special price now?
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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) |
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04-21-2009, 07:48 PM
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E-85 sippin drunk
Join Date: Jan 2002
Location: Warner Robins, GA
Posts: 1,554
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Quote:
Brian, Is that the collector that you will be using for the models with heat? Is that the reason for the metal trim around the collector near the primaries?
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Brad...930 gt-1 racecar, increased displacement to 3.6L, JB racing Cylinders, JE 8 to1 pistons, stroked crank, Carrillo rods, extrudehoned 3.2L intake, full bay Bell I/C, GT-2 EVO cams, Rarly8 headers, GTX-3584RS turbo, twin plug, P&P heads, Link G4 EFi system, G-50/50 with LTD slip and oil squirters/oil cooler, zork tube, full race coilover system, with carbon fiber body, full cage, E-85 sippin drunk |
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04-21-2009, 07:52 PM
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Join Date: Mar 2006
Location: Elk Grove, CA
Posts: 513
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I want one....I'm geting that "gotta have it" feeling in my VISA.
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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) |
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04-21-2009, 08:01 PM
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E-85 sippin drunk
Join Date: Jan 2002
Location: Warner Robins, GA
Posts: 1,554
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Quote:
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Brad...930 gt-1 racecar, increased displacement to 3.6L, JB racing Cylinders, JE 8 to1 pistons, stroked crank, Carrillo rods, extrudehoned 3.2L intake, full bay Bell I/C, GT-2 EVO cams, Rarly8 headers, GTX-3584RS turbo, twin plug, P&P heads, Link G4 EFi system, G-50/50 with LTD slip and oil squirters/oil cooler, zork tube, full race coilover system, with carbon fiber body, full cage, E-85 sippin drunk |
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04-21-2009, 08:13 PM
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Crotchety Old Bastard
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The collector is a prototype as well. It will undergo a MAJOR smoothing before production.
Heat exchangers are in the idea stage right now. One thing at a time ... Chuck you have to remember I live in Alabama. We have our own language here. If you care to learn it just watch a few Larry the Cable Guy CD's.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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04-21-2009, 08:27 PM
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thats beautiful...
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Kris @ Tech9 86' 930/GT-40R Sold 94' Rustang GT daily (long gone) 2008 C6/Z51 Corvette |
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04-21-2009, 08:30 PM
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Registered
Join Date: Jun 2001
Location: Sweden
Posts: 5,910
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That's great header design for primaries! I would use more gentle-tapered collector and lower diameter pipe after the header in order to retain exhaust velocity. Using such big diameter after merge will make headers work in "pressure mode". While this doesn't affect top power as much, it would be desirable to use as much pulse energy as possible, in order to have as low boost threshold.
Otherwise, very nice!
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Thank you for your time, |
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04-22-2009, 04:23 AM
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78 Porsche 911SC 3.0L, 3.3Turbo soon. 
2002 Porsche 996TT
