Motor Backfires Thru Exhaust When Trying To Start

[Gaz64]

Originally Posted by Jim Coleman

OK, in checking the balancer, I see there are 4 separate lines with numbered marks. I need to know which line to use as there are
four choices. Got a feeling that I was using the wrong one.


5/8

6/1

2/3

7/4

Is Top Dead Center 6/1 ? That seems to center with the keyway.

Thanks,

Jim

A degreed balancer for a small block in firing order, the first lap is 1872, the second lap is 6543, to give 18726543.

1 and 6 are at TDC at the same time, when 1 is at compression TDC, 6 is at valve overlap,(end of exhaust, beginning of intake).
Same for the pairings, 8 and 5, 7 and 4, and 2 and 3.

I hope you are reading all of this Jim, since many boys have attempted to help you here.
I have seen how to find TDC compression a few times in this thread.

Gary