Question about Harley Davidson FLTR Road Glide Motorcycles

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Have a 1922 harley jd. valve timing is set at proper timing marks as per instruction manual.can't seem to get the ignition timing set close enough for the engine to run.all i get is a backfire out the exhaust.those familiar with these engines,know that you can't see the piston to know when 5/16 btdc is.any methods from you experts out there would be appreciated. thanks,hobo

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Hmm, your right I don't know much about the JD as I've never had the opportunity to work on one. But, the engine has a spark plug. Can you remove the spark plug and use an ordinary drinking straw to back measure the distance that you back the piston down in the bore? Now, on most Harleys, there is a timing hole that allows you to look at the flywheel in the case. The flywheel should be marked for top dead center as well as the advanced timing mark. Since the distributor did not have automatic mechanical advance, you had to physically advance the timing by moving the distributor. I remember back in the days when we used to set the ignition timing by setting the advanced timing mark in the hole, put a piece cigarette pack film between the points and rotate the distributor until the plastic film moved. I'm sure the JD is just that simple. I doubt they had timing lights back then but I don't know. Contact me off forum is you will, I have some connections in a couple of museums that might be able to help. wd4ity@bellsouth.net

Posted on Sep 15, 2010

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Please rate this answer. Thanks Tasha!

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