Posted by John T on April 11, 2009 at 16:49:41 from (66.244.97.31):
In Reply to: Re: jd g timing posted by johns48jdb on April 11, 2009 at 15:13:51:
Yo John, Dont you really mean turn it TO THE RIGHT (Forward CW) ,,,,,,,then get the flywheel where you told him (TDC on left cylinder) then slowlyyyyyyy turn it backwards TO THE LEFT (CCW) until it snaps?????????
Of course THAT ONLY SETS THE STATIC START IMPULSE TIMING, NOT THE RUN TIME ADVANCE. It takes a timing light to tell where shes actually firing at when shes running. The timing light can also then be used to adjust the run timing by loosening the mag and rotating it (forward CW to retard and backwards CCW to advance) HOWEVER one has to then mark the exact position (to preserve the run timing) and remove the mag to adjust the rear stop plate to re adjust the start impulse (like Duane Larson suggests) as rotation of the mag affects BOTH start n run timing.
I do it a lil different then Duane, I set the correct lag angle,,,,,,,then by mag rotation get the start impulse at TDC,,,,, then fire it up n stick a timing light on it and if its in the 20 to 30 BTDC range I just let it go. If I were going to pull it or wanted to insure absolute max HP then I would go the extra step n do as he does if I dint luck out on the first try
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