Rick Guynn wrote:
>
> Hi all,
<snip>
> Update: after trying everything I could think of (including checking the valve
> timing) I finally decided to try playing with the timing again. I advanced
>and
> retarded it to no avail. The I REALLY advanced it. Now to my best estimate I
> have the timing set at about 45 degrees BTDC at appx. 1000rpm. The bog is
> still there a bit, but not nearly as bad and it no longer backfires. I
>haven't dared
> to advance it any further. I have in the past checked to make sure that the
> crank pulley mark and the actual position of the the No.1 cylinder were in
>sync,
> and it appeared that they were. I may have to check again. There is no
> noticeable signs of pinging. SO I'm stuck... any suggestions?
Rick, I have the same situation with my '70 B. My advance is around 45
degrees of advance and it idles smoothly and pulls like a truck. This
is with what I believe to be a high compression motor. I replaced the
pistons when I rebuilt the motor, and Brit-Tek sent me the new pistons,
knowing full well what motor I had, so I assume it is high compression.
I didn't know much about cc'ing the heads and deck height and the all,
so I didn't calculate the compression at that time.
Anyway, I'm beginning to stray. I've put 35,000 miles on my car with
the timing as such and I have had zero problems. I run 87 or 89 octane
gas with absolutely no pinging whatsoever. Don't ask me why or how.
When I tried to set my timing at 20 degrees BTDC, the car would not run
over 3k rpm. My dizzy is new and correct for my car, so I know I am
getting advance.
It's just one of those things.
Jay
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