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Buell Forum » Old School Buell » Archive through April 09, 2014 » Good Plug gap? « Previous Next »

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Phelan
Posted on Saturday, April 05, 2014 - 11:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What is everyone running for plug gap? Mine was set at 0.45 when I got it, which seems a bit high. I turned it down to 0.38, and then yesterday turned it up to 0.41ish just testing the waters. Thoughts? I really don't have any idea what these should be set at with my setup, and likely should replace the plugs and wires anyway on payday. I have a Tstorm top end on my S2T, and possibly cams, not sure what it was built to. All the motor work was done before I got. Runs VERY strong compared to my last S2. Never gone above 5800 RPMs though either since I don't know what the valves are good to.
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Steveford
Posted on Sunday, April 06, 2014 - 07:05 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

.40 should do it.
One of the nice things about Buells is that spark plugs are rarely a concern.
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Pash
Posted on Sunday, April 06, 2014 - 07:32 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

0.4? Surely you mean 0.04"?

Early manual says 0.038" - 0.045", later manuals 0.038".

The bigger the gap, the more stress on the rest of the high tension system, i.e. coil, leads and caps.
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Thylacine
Posted on Sunday, April 06, 2014 - 08:19 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I look at the plug when I remove from box, if it hasn't been dropped and the electrode bent, then the gap is good.
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Phelan
Posted on Sunday, April 06, 2014 - 09:48 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yes, .04, sorry. Sounds like it's about right then.
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