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I just wanted to know if I should run a different plug in the middle cylinder? Does the middle cylinder really got that much hotter then the other two?
 

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On all my tripples ive had i have been told to run the same plug in all 3.
 

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You take care of the heat differences in jetting and coolant routing, no need to use different plugs.
 

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With a liquid cooled motor, it not an issue.
With the older air cooled triple's in motorcycle's, and sled's it was always a good idea to run one range cooler in the center cyl.

With your sled just run the same plug in all three.

Rick
 

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Aren't you looking to sell the sled anyway?
 
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