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Old 08-29-2017, 06:39 PM   #14
nick c
Senior Member
 
Join Date: Aug 2010
Posts: 260
Default Re: Timing indicators, do you use them?

When I made my first dial indicator adapter, I used a lathe, mill, taps, 1/2" cr round 1'' long or 3/16" cr round.
There is another way to do this. You'll need a compression coupling for 3/16" copper tubing and a 20 penny nail, Cut just the head off of a 20p nail, belt sand to 3/16" dia. so it will go into the brass coupling, the offset will be about 1" to go into the spark plug hole and end up over the piston. Most all dial indicator stems are just over 3/16" in dia, so take the ferrel out and saw cut it down one side and clean up the inside with a 3/16" round file.
carry on nick c
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