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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,563
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E85? That should run much cooler than high octane gasoline. That's a game changer. Have you measured EGT's?

Aluminum will not burn at these temperatures. Exhaust cooling is not such an issue once the exhaust leaves the turbo. The ID of this system should be sufficient to compensate for any expansion I would think.

Also, aluminum will not discolor. It will however oxidize.
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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
Old 04-01-2010, 10:33 AM
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