more details sbc in place of lt1

Garfield Willis garwillis at msn.com
Wed Jul 26 01:32:00 GMT 2000


On Tue, 25 Jul 2000 16:22:31 -0400, "Bruce Plecan" <nacelp at bright.net>
wrote:

>Some appls. for individual cylinder timing corrections for Knock.
>Measuring differences in crank accleration rates, for matching cylinder to
>knock.
>Heard a rumor once that it was a lead in to a system where timing was for
>peak cylinder pressure, and recovery measing accleration rates after TDC.

Yeeeaahhh, all that good hi-res timing stuff.

>Well the lenghts of signals on the lo res vary, andyou have too sync that to
>crank posistion.  The PLL would be for when actually running as I see, it
>sense the rpm are so erratic at cranking.

Yup, tiz true, at cranking rpm, t'would truly be phase-locked poop. But
hey, thas OK, cuz everything is pretty much poop at cold-crank, right?
:)  You haven't a clue what your timing is without base timing, and you
haven't a clue what your fueling is either, what with it condensing and
pooling everywhere. You don't have a decent MAP signal that's useable,
and the temp sensors are probly all pegged to boot. Dang's a muricul the
thang starts at all. Must be them bangsNpops ya get from those random
spark-induced petrol explosions and the rest is just dumb luck. Hee.

Speaking of erratic cranks,
Gar


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