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Help identify cases/motor please

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Old Sep 28, 2025 | 02:43 PM
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Default Help identify cases/motor please

A friend got his hands on a 1983 FXWG. It sat in his sons garage for several years (has not run). He bought it from his son for his own project. I'm helping (while he watches and (hopefully) learns) get the thing road worthy again. So far I've rebuilt the primary and clutch. Had to replace the inner primary because the chain had worn a massive hole below the starter, which we also replaced. Rebuilt the original 'Harley-Davidson Screamin Eagle' carb. Replaced the coil and got it fired up. Ran really rough. Just ordered a new set of Jims lifters and investigation found a bad one. Andrews 'B' cam. Cam looks like still new condition even thought the bike obviously has LOTS of miles on it.
Now that you guys are caught up this is where I'm taking a hard look at the motor. I'm suspecting it's got a stroker kit of some kind. Used a wooden dowel thru the spark plug hole. Marked the dowel when the piston was at TDC and marked it again at BDC. Measured between the marks is 5 inches.
Where the serial numbers are normally located on the right case is just stars. I had him send me these pics cuz I forgot while I was there yesterday. Can anyone help identify the cases/motor? I'm not going to apologize for being long winded cuz I added pictures for those of us that are simple minded




 
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Old Sep 28, 2025 | 03:39 PM
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Motor numbers were moved to the left case, and they didn't want to leave a blank slate on the right side for people to create whatever number they wanted on the traditional right case.
 
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Old Sep 28, 2025 | 03:58 PM
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SEEN THAT many times its a late production thing
 
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Old Sep 28, 2025 | 04:27 PM
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Remove the timing plug in the left case and turn the engine over slowly (spark plugs removed) while watching for markings on the side of the flywheel. You should see timing marks on the outer face of the flywheel, but if S&S wheels you will also see serial numbers that will help identify what stroke they are. The Andrews B cam was a commom can to use with strokers.

Since it's been siting for a while, you might want to use a bore scope to see how the cylinders look. If it wasn't stored in a climate controlled location it's possible if not likely that some rust acccumulated on the cylinder bore. Either wat it's a good idea to see how they look.

Paul
 
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