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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 14,388
My car was sitting in your parking lot a couple of weekends ago Bret. Your buddies enjoyed it, ha!

The SC engine had several different versions throughout the years of '78 and '83. Euro/US/ROW/different years, all had different C/R and CIS systems.

The first things I would do is run the engine type number and see exactly what you have. Then use Marty's cool boost graph and see how much you can get away with. Start out with the lowest boost possible and work up to the target point.
Run the A/F ratios and see if you need more fuel, check the timing vs knock.

It's just not that difficult dealing with a low boost application. The devil is in the details. Take your time, be conservative, make a checklist and check everything twice. I'm sure the fellows that have done this will be happy to help you along if you post your progress and questions.
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 03-09-2008, 06:23 AM
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