RE: [Chevelle-List] Timing tab question

[Bill Vander Werf]

The farther away from the balancer the timing tab is the larger the error will be. The tab should be close to the balancer. The larger the balancer the farther apart the degree marks will be around the circumference of the balancer. I would get degree tape for the diameter of your balancer and a pointer from one of the mail order companies, find TDC and mark your balancer.   Bill Vander Werf     -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Tomlinson Sent: Saturday, June 14, 2003 12:32 AM To: [EMAIL PROTECTED] Subject: [Chevelle-List] Timing tab question   I'm going through the timing on my '71 350 Malibu and have a question on the timing tab.   First, my timing tab is located 1.25" from the balancer, which introduces a lot of parallax when you try to adjust the timing. Second, I measured the distance from the 0 deg mark to the 8 deg mark on the tab, and it measures 1.25". When I calculate the circumference of the circle the tab is on (6.75" for the balancer + 2.5" for the timing tab offset), I get 28.27", which is .0785"/deg. This would make 8 degrees on the timing tab equal to .628", or half the 1.25" I measured.   Shouldn't the degrees on the timing tab measure the degrees around the balancer? Is my tab off by a factor of two, or are my calculations off?   Tom Tomlinson