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Twins are more fun!
Join Date: Dec 2005
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What are 993TT OEM heat exchangers made of?
Anyone know that the OEM 993TT heat exchangers are made of? Cast mild steel?
I have a set lying around and I want to get the triangular K16 collector flanges cut off and have T25 flanges welded on.
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James Carrera TT (3.3, Protomotive MAP ECU, EFI, GT2 EVO CAMs, Twin Plugged, Twin Turbo's) Last edited by JMA-RUF; 02-12-2009 at 01:52 AM.. |
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02-12-2009, 01:43 AM
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Twins are more fun!
Join Date: Dec 2005
Posts: 639
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I take it I'd need mild steel flanges?
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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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02-12-2009, 10:46 PM
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James- I dont know that it is mild steel, I think it is some form of stainless as I never see them rust. Maybe Ben could help us out on this one.
I want to to hear about you cutting the flanges off and sticking t-3 flanges on there for a set of Gt-30Rs with .68 hot housings... Let her breath! At least a set of Gt-28RS's
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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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02-13-2009, 07:06 AM
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Twins are more fun!
Join Date: Dec 2005
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Quote:
 I want it to be responsive and flow well up top. It's a street car. GT30R's on a 3.3L might be a bit too big. They'd be REALLY nice on a TT 3.6L - 3.8L though  I know the 993TT heater boxes are stainless, but the headers themselves ???
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James Carrera TT (3.3, Protomotive MAP ECU, EFI, GT2 EVO CAMs, Twin Plugged, Twin Turbo's) Last edited by JMA-RUF; 02-13-2009 at 05:04 PM.. |
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02-13-2009, 04:34 PM
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Twins are more fun!
Join Date: Dec 2005
Posts: 639
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This guy's done exactly what I want to do
 
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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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02-13-2009, 04:41 PM
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Ok ok ok- at least a set of big GT-28RS's- Then it would spool real quick and keep going up top. Keeping the heat out of the cylinders on our cars is important and thats why I say go a little bigger. Twin GT-28RS's would be baller though.
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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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02-14-2009, 10:25 AM
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Twins are more fun!
Join Date: Dec 2005
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GT28RS's flow around 35lb/min. A pair would flow up around 700HP
 On an air cooled 911, maybe around 600HP?
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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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02-14-2009, 12:30 PM
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Crotchety Old Bastard
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I knew the answer to that question a year or so ago. Can't remember for sure now. I think it was 400 series stainless.
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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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02-14-2009, 02:00 PM
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Twins are more fun!
Join Date: Dec 2005
Posts: 639
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Talk about BAD @SS
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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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02-14-2009, 02:12 PM
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Registered
Join Date: Jul 2005
Posts: 276
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993 TT headers are Stainless.
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02-14-2009, 03:36 PM
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Twins are more fun!
Join Date: Dec 2005
Posts: 639
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Thanks Red9
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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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02-14-2009, 03:38 PM
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2002 Porsche 996TT
78 Porsche 911SC 3.0L, 3.3Turbo soon. 
