7747 spark control questions.

[Kevin R]

> > 0 degrees as per the timing decal. If Bias warm is 10 deg. Bias
> > cold is 20 deg (I think). Winbin table for 50 Kpa @ 600 rpm is 29.88 deg
> > whereas
> > Tunercat is 20.1 degrees BTDC. (Using an ARJT as an example).
> > Winbin adds 10 deg or includes the bias--TC doesn't add it-- so what's
the
> > actual "engine" measured timing value at 50Kpa and 600 RPM ?

Winbin is showing the actual amount of timing in the table which the bias is
subtracted from.
TC subtracts the bias from the main table so what you see is what the dist
will put out assuming what your dist is set to matches the intial timing set
in the prom in this case 0. In the above case, 29.88 is what is actually in
the main table with out accounting for the bias, 20.1 is what the "actual"
timing will be set to and includes the bias.

Kevin R

----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org