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Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

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  #11  
Old 4 Weeks Ago
Scott Scott is offline
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Quote:
Originally Posted by ryder rick View Post
It may fit up through all the right side shifter years.

Would need early cams to use it on a cone motor.
I was told it would work with an early 1981, but not a late 1981. My 1981 has a manufacture date of 11/80, according to the sticker on the neck, which made me assume it was early. The pinion shaft was too long for this early cover, and there was an approximately .17 gap between the case and the cover.

Now I’m selling the cover and my box of stuff I planned to build into a mag.
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  #12  
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What all else is in you box of parts?
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  #13  
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Scott Scott is offline
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I’ve also got a FM mag in pieces, which I was going to assemble with new points and condenser today and list on eBay. I’m open to offers on all or part of my failed magneto conversion experiment. Message me if interested.
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  #14  
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Quote:
Originally Posted by Scott View Post
I was told it would work with an early 1981, but not a late 1981. My 1981 has a manufacture date of 11/80, according to the sticker on the neck, which made me assume it was early. The pinion shaft was too long for this early cover, and there was an approximately .17 gap between the case and the cover.

Now I’m selling the cover and my box of stuff I planned to build into a mag.
Gaaaa, I forgot about the changes to the pinion shaft.
Wouldn't that just be a small machining operation to move the bushing deeper into the cover or clearance it?
Remember its not a bushing in the support sense it is a seal for oiling the crank.
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  #15  
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Scott Scott is offline
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Quote:
Originally Posted by ryder rick View Post
Gaaaa, I forgot about the changes to the pinion shaft.
Wouldn't that just be a small machining operation to move the bushing deeper into the cover or clearance it?
Remember its not a bushing in the support sense it is a seal for oiling the crank.
I would do that BUT... if all goes according to plan, I'll be picking up an XR parts lot tomorrow which includes a top end I plan to put on my '81 (XR750 heads, custom made cylinders and pistons) which allow it to fit an XL bottom end with stock rods. I'll have a lot of other XR stuff, both 750 and 1000, to sell off to make this purchase less painful. I need to buy XR1000 cams, which will make things problematic for an earlier cam cover. I could use early cams and retime the rear cylinder's cams, but with each change this project will get closer to not being finished.

I know many have talked down the XR1000 but I really don't care whether the performance backs up the hype. This is my version of a rigid chopper with no front brake.
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at 70 h.p. stock the XR-1000 was 9 h.p. more than the early 9:1 1000 c.c. motors.i won't talk about the later low compression 1000's with the q cams. if you want to build a race motor do what the factory did.
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