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Buell Forum » Old School Buell » Archive through May 23, 2016 » Question On Spark Plug Heat Range 2002 X1 « Previous Next »

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Buelldualsport
Posted on Saturday, March 05, 2016 - 03:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Various search results have returned various results
Stock Heads, Stock Air Box, Stock Header with Vance and Hines Can Stock Air Box with K&N

Iridium Style Plug

Hottest Heat Range NGK 7

Intermediate NGK 8

Coldest NGK 9


Input?

Start with a Fresh 8 heat range and do a series of plug checks?

(Message edited by Buelldualsport on March 05, 2016)

(Message edited by Buelldualsport on March 05, 2016)
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Imadog
Posted on Monday, March 07, 2016 - 06:35 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I use NGK (2641) DCPR9E Standard Spark Plugs, They have a nice tan color after running them for a while.

The cylinder temperatures are affected by the heat range of the plug, to help keep detonation in check you should run the coolest plug that does not foul.

I have always used NGK plugs when available, I could not find them locally so went to Amazon.
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Buelldualsport
Posted on Monday, March 07, 2016 - 07:52 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Appreciate the input.

I have both the 7 & 8 heat range plugs on hand

Waiting on 9s to arrive

Will do a test and tone

Regards
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Valguard
Posted on Tuesday, March 08, 2016 - 11:42 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I like to go with the lowest heat rating possible. The only concern is fouling. With Iridium plugs though, there is much less concern about fouling. You might even be able to get away with a larger gap too on Iridiums. Not sure how much benefit that would provide though. I'm not spark plug expert.
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Buelliedan
Posted on Thursday, March 10, 2016 - 05:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

use the 9s if the temp is over 70 degrees.
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Buelldualsport
Posted on Friday, March 11, 2016 - 07:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thank you all for the input

I am accustomed to working with 8 plugs at time, not just 2.

LOL
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Mmmi_grad
Posted on Sunday, April 10, 2016 - 11:07 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Buy the right ones at American Sport Bike SHop is closing soon so GO BUY WHATEVER YOU CAN.

(Message edited by mmmi_grad on April 10, 2016)
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