Re: timing
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Re: timing



Bob, I don't know if you had your distributor out or how you indexed your teardown, but a common mistake is to not rotate the crank a revolution after aligning the cam and crank gear marks.  When they are aligned (cam at 6:00 and crank at 12:00) that is compression TDC on #6, and you must then turn the crank a full revolution to index the motor compression TDC for #1 (cam will now be at 12:00 given it turns 1/2 for every crank revolution).  You might want to place your timing light pickup on #6 wire and check your timing to validate if this is your issue.

On Thursday, June 22, 2017 at 12:34:16 AM UTC-4, Bob Turner wrote:
I changed cams a while back. I tried to start it up and it backfires through the carb.
 Does it sound like I did not line up the marks on the timing chain right ( 180 ) out ?
 Is there any way to tell besides taking the timing cover back off?
  What would be a good gasket to use?
          Thanks

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