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WinRice WinRice is offline
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Join Date: Jun 2005
Location: Colorado
Posts: 709
The spec for the non-calif, typical 78 USA Model

From the Porsche Tech (white) book:

911 Turbo, USA (not CA), from 78

10 +- 2 degrees ATDC @ 1000 +- 50 RPM
Vacumn Control detached - no

26 +- 4 degrees BTDC @ 4000 RPM
Vacumn Control detached - yes


That looks like what your manual shows.
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1986 911 Turbo
3.3L, K27HFS, Tial 46mm, TurboKraft Intercooler, 964 Cams, Monty Muffler, MS3Pro Evo, M&W Ignition, Zietronix WBO2 Data Logger, Wevo shifter, coupler and motor mounts.
Old 09-25-2010, 12:36 PM
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