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Crotchety Old Bastard
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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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Me like track days
Join Date: Sep 2003
Location: Kirkland, WA
Posts: 10,196
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That's what I thought.
Early attempts at fuel head modifications, in my case, resulted in an engine much too lean in the top 1/4. Mine was shimmed on the previous rebuild. As on any of this stuff, YMMV so take general advice and MONITOR, monitor, MoNiToR those AFRs....
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ - "930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe Movie: 930 on the dyno |
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Crotchety Old Bastard
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The A/F ratio would be lean on top if (a) the system pressure was too low for your power output or (b) the WUR boost pressure was not adjusted properly or (c) both. This would all be revealed on a dyno run or with an LM1.
__________________
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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![]() |
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Me like track days
Join Date: Sep 2003
Location: Kirkland, WA
Posts: 10,196
|
Good points -
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ - "930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe Movie: 930 on the dyno |
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