I have a 1973 Sportster. When looking at gasket kits I noticed theres a difference bewteen early and late models. Can some provide a site or location where I can find a reference so I can order the correct parts. Thanks
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1973 Sportster
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A 1974 H-D parts book comes to mind as a good source.Be sure to visit;
http://www.vintageamericanmotorcycles.com/main.php
Be sure to register at the site so you can see large images.
Also be sure to visit http://www.caimag.com/forum/
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I believe that if your head bolts are hex shaped it is early and if they are 12 point (star) it is late. I know the head type was changed to move the bolts away from the bore, so the head gaskets are different.
RobbieRobbie Knight Amca #2736
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Ad that was in response to 1972, when the MoFo MoCo tried simply boring the 883 cylinders out to 1000, which went over like a lead balloon. So they changed to larger cylinders, wider bolt pattern, and 12-point headbolts to clue in anyone taking one apart.
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wider bolt pattern, and 12-point headbolts to clue in anyone taking one apart.
RobbieRobbie Knight Amca #2736
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Since they happened to 12-point the headbolts at the same time the pattern was moved to accommodate the larger cylinder, it was always a clue to me that this was a later, not earlier 72-73 1000 on my bench, and required the later, bigger head gaskets. Depends, I guess, on whether you're reading for a strict cause-and-effect ("chicken or the egg?"). End's the same.
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I am just now reading this thread (interesting since I have a 72) and started thinking about other changes. I think starting in 73 they cast the rt. case solid around the counter shaft and left the speedo cable dr. off. That is what I have allways thought, but now wonder if it was a mid year change.Kerry AMCA # 15911
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