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Buell Forum » Old School Buell » S2 Thunderbolt » Archive through September 16, 2018 » Burned exhaust valve « Previous Next »

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Williamscottrobertson
Posted on Monday, July 17, 2017 - 12:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
Looking for a correct KPMI Black diamant exhaust valve for an S2. On the KPMI website it lists Evo 84-99, Evo Sportster 1200 88-03. Which is correct?
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Ratbuell
Posted on Monday, July 17, 2017 - 03:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
"Evo" is a 1340 big twin, predecessor to the twincam.
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Williamscottrobertson
Posted on Monday, July 17, 2017 - 05:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
Ok great thanks!
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Phelan
Posted on Monday, July 17, 2017 - 08:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
Evo big twin exhaust valve is 1.575" diameter. S2 exhaust valve is only 1.480" diameter.
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Buelliedan
Posted on Thursday, July 20, 2017 - 04:58 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
You need valves for a 1987-2003 XL 1200. S2s have the same heads as 1200 sportsters of that era.
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651lance
Posted on Thursday, July 20, 2017 - 05:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
The OEM Valve number is 18024-87A. I like the Kibblewhite valves, we've had good luck with them over the last 20 years. The part number from TR is 49-9323 at the retail of $31.89.
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Williamscottrobertson
Posted on Thursday, July 20, 2017 - 07:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
I ordered the kibblewhite part #20-2014 on eBay for $24.95. That pn shows on the kibblewhite site for the Evo Sportster 1200cc 88-03. The only "XL" listed was the 1100. The term Evo, Evolution, and XL get thrown around interchangeably a lot. So it had me confused.
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