What is the bore and stoke difference in a 103" and 110"?
12-12-2013 | 08:50 AM
Joined: Jun 2012
Posts: 300
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From: Midland, Tx
What is the bore and stoke difference in a 103" and 110"?
Curious
12-12-2013 | 08:57 AM
Joined: Oct 2009
Posts: 598
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From: Hickory, NC
The stroke is the same for both, 4.374" The 103" has a bore size of 3.87" while the 110" has a 4" bore, approximately 1/8" larger.
It's on Harley's website. Pick one of the bikes which have each motor and look under the "Specs and Pricing" heading, then click "Engine".
12-12-2013 | 09:25 AM
Joined: Jun 2012
Posts: 300
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From: Midland, Tx
12-12-2013 | 11:19 AM
Joined: Dec 2007
Posts: 4,998
Likes: 54
From: Bay Area
FYI, Ive been told to make a 96 or 103 into a 110, you need to bore the cases for the larger cylinder walls.
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