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Discussion Starter · #1 ·
50 years ago when I had a 1954 AJS, we used a dial indicator to go through the spark plug hole to indicate when the piston was at TDC.



We that are interested on performance want to know the real TDC, not what the marks indicate. They could be wrong.



How many of you would buy one of these?



I'm ready to buy one.



Don
 

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I just Googled a pic, but they're under $10 on eBay too.

Small engine shops, chain saw, etc, use them as well. Some times you can find a nylon one.
 
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