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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,408
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The distributor should not be attached to the intercooler as it will see boost spikes there.
OEM heat exchangers are thick steel and will mask overtemp issues. You don't say if headers or OEM is being used. Headers tend to glow easy as they are thinner wall.
If your engine is running well and performance is good the muffler must not be plugged.
The heat event must be occuring only at sustained speed which indicates off timing or lean AFR during off boost events. Check your vac hoses again then adjust the cruise AFR to 13.5 and see what happens.
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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 10-31-2011, 03:48 AM
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