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Timing setup with a Hotspark 120-130 1968

uid 18886's pic
posted by  sdewolfe on  Fri May 30 09:47 CST 2008
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last visit: Mon Jan 31 05:56 CST 2011
[RELATED]

Howdy Repairman,

If you have good spark at #1, the trigger mechanism is working as it should and there is a complete path from the coil to the plugs. Spark is no longer a problem, move along to the next thing you need, correct timing.

It is a relatively simple matter to find TDC on #1 compression stroke. Bump the starter around while you hold your thumb over the #1 spark plug hole. When the compression blows your thumb off the hole, stop. Now rotate the engine by hand to TDC. You can see the top of the piston through the plug hole as it approaches TDC. Use the marks on the crank pulley to set zero on the pointer. The distributor rotor should now point directly at #1 tower. If it doesn't, make it so.

Put everything together and spin the starter as you rotate the distributor toward advanced. It should fire and run somewhere around 5 degrees BTDC.

BTW, have you checked compression since you installed this head?
--
Mr. Shannon DeWolfe -- I've taken to using mister because my name misleads folks on the WWW. I am a 52 year old fat man.






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