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

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  #251  
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Quote:
Originally Posted by forqueue View Post
'Ridge' around the main-shaft bearing on 1- side has been ground-down. For kick-start gear clearence?
https://ibb.co/6n4qQ06
Yes, for kick start clearance
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  #252  
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Since you decked the cylinder you will want to check your head bolt length. If they are too long they will bottom out in head before the gasket is compressed. Also I ran 93 octane in my Shovelhead with 12 to 1 compression and never had a problem. It was dual plugged and single fire.
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  #253  
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Great to see the continued progress!
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  #254  
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Quote:
Originally Posted by RicThompson View Post
Since you decked the cylinder you will want to check your head bolt length. If they are too long they will bottom out in head before the gasket is compressed. Also I ran 93 octane in my Shovelhead with 12 to 1 compression and never had a problem. It was dual plugged and single fire.
Thanks for the tip Ric, and yes, my head bolts are a bit too long now. I have some much shorter bolts I’ve been using for all this testing/measuring assembly/disassembly but it is definitely on my list to cut down my real head bolts before installing for real.
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  #255  
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You may have to "fit" your intake manifold now also. Not a big problem if you are using bands.
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