Re: Ignition and Timing

From: TIGEROOTES(at)aol.com
Date: Sun Feb 21 1999 - 09:41:39 CST


Karen,
I seem to have misplaced my application sheet, but the specifications for your
41267 vacuum advance unit (when new) were as follow:
The (y) denotes a push-on vacuum hose fitting rather than the screw-on type.
The code numbers refer to inches of mercury per result: the first figure is
where the unit begins to function. The second number is where maximum advance
will occur. The last figure is the maximum advance in degrees of flywheel
(crankshaft) rotation.

Vacuum Code: 3/8/7(y) (at) 2500 rpm, advance: 11-13 degrees (full)
                                                (at) 1200 rpm, advance: 8-10 degrees
                                                (at) 650 rpm, advance 0.5-2.5 degrees
                  no advance below 450 rpm

Jim Leach, Seattle



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