First Harley, ??? Big Bore Kit
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3rd Gear
Joined: Jun 2010
Posts: 7
Likes: 2
First Harley, ??? Big Bore Kit
Hey guys, I just bought my first H-D from an H-D dealership in Idaho. I bought a 2001 FLHR, and when I purchased the bike I asked them, if the bike had the big bore kit in it. He told me he didn't know, and that I would be able to tell when I rode it. How he expected me to know with this being my first H-D, I don't know. So, my question is obviously how do I tell if my bike has the big bore kit? I am pretty certain it doesn't. I am also, not the biggest gearhead around, so could someone tell me what exactly a big bore kit will do for my bike. Thanks. This sites great. I can ask questions, that make me feel like an idiot and no one will know who I am.LOL Thanks again.
Last edited by cazidog; Jul 3, 2010 at 01:50 PM.
Ultimate HDF Member
Joined: Feb 2007
Posts: 7,663
Likes: 7
From: Northeast Ohio
Telling a new rider he will know really speaks volumes about the seller, he doesn't have a clue. That being said, from external appearances there is not a way to tell. An experienced rider may be able to feel the difference from stock to big bore, but if that was all that was done, there really is not that much of a difference. Only way to know for sure is to pull a head and measure cylinder bore.
Road Warrior
Joined: Jun 2007
Posts: 1,788
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From: Here
You might be able to do a compression test. If you have increased cylinder pressure over stock specs, that could indicate that something had been done. Could be something like cams only, or could be a big bore. Like Dalton said though, only sure way to know is to pull the heads and take some measurements.
Club Member
Joined: Jun 2007
Posts: 45,429
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From: Bedford UK
Did the bike come with any service paperwork from the previous owner? That's the sort of stuff I would expect to get when buying a 'new' bike, or to pass on when selling it.
Last edited by grbrown; Jul 5, 2010 at 07:08 AM. Reason: Grammar!
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