Hi Folks:
I have posted before about my 61 270 HP Vette. When I first started driving it I was having cooling problems. After a discussion with the Paragon technical folks, I started to turn the timing ahead a little at a time. It eventually cooled much better and runs better. It will still get 5-10 degrees warm on a hot day. While making these adjustments, I had left the timing scale behind and under the timing light the mark on the balancer was up under the water pump. I figured the rebuilt balancer was off so I got a TDC finder to check. As it turned out the mark was off about ten degrees. At TDC the balancer mark is at 10 degrees advance. I also got some timing tape and applied it to the balancer aligning the 0 mark on the tape with the 0 mark on the scale. I used the tape specified for to the balancer diameter, or as close as possible. Then I put the light on it and it is reading 45 degrees advance. I also readjusted the valves at the new TDC, they were a little loose. The car runs reasonably well, although I think I need to drop the timing back a few degrees in that it struggles against the starter sometimes. It has never pinged even though I have tried to get it to. What are the chances that I have the timing chain on a tooth off? I know how to align them, this was by no means the first timing set I have installed including a few belts. I never screwed one up before, but that is no guarantee. Naturally I would not look forward to taking the timing chain cover off to check the chain. Any thoughts?
I have posted before about my 61 270 HP Vette. When I first started driving it I was having cooling problems. After a discussion with the Paragon technical folks, I started to turn the timing ahead a little at a time. It eventually cooled much better and runs better. It will still get 5-10 degrees warm on a hot day. While making these adjustments, I had left the timing scale behind and under the timing light the mark on the balancer was up under the water pump. I figured the rebuilt balancer was off so I got a TDC finder to check. As it turned out the mark was off about ten degrees. At TDC the balancer mark is at 10 degrees advance. I also got some timing tape and applied it to the balancer aligning the 0 mark on the tape with the 0 mark on the scale. I used the tape specified for to the balancer diameter, or as close as possible. Then I put the light on it and it is reading 45 degrees advance. I also readjusted the valves at the new TDC, they were a little loose. The car runs reasonably well, although I think I need to drop the timing back a few degrees in that it struggles against the starter sometimes. It has never pinged even though I have tried to get it to. What are the chances that I have the timing chain on a tooth off? I know how to align them, this was by no means the first timing set I have installed including a few belts. I never screwed one up before, but that is no guarantee. Naturally I would not look forward to taking the timing chain cover off to check the chain. Any thoughts?
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