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Old 03-20-2012, 10:53 AM
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ntidsl ntidsl is offline
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Spark plug for 2005 197 TT with MCX

Forgot to look what spark plug I have been using and at 500 hours think its time to change them just for safety sake. Does anyone have the type of spark plug from DIM that I need. Its an MCX engine slightly modified at factory to make it for Tournament team. Should I do wires too?
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Old 03-20-2012, 10:57 AM
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Here is the owner's manual from my '06. Not sure if it's the same, but I don't know why it wouldn't be...
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File Type: pdf 2006IndmarOperatorsManual[1].pdf (1.06 MB, 92 views)
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Old 03-20-2012, 11:13 AM
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Quote:
Originally Posted by ntidsl View Post
Forgot to look what spark plug I have been using and at 500 hours think its time to change them just for safety sake. Does anyone have the type of spark plug from DIM that I need. Its an MCX engine slightly modified at factory to make it for Tournament team. Should I do wires too?
How is the MCX used in the tournament team boats in 05 modified?
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Old 03-20-2012, 11:28 AM
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Quote:
Originally Posted by east tx skier View Post
How is the MCX used in the tournament team boats in 05 modified?
I didn't know they were, but I'm far from an expert on what MC does to motors.
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Old 03-20-2012, 11:55 AM
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I don't think the mod was much...blingier and the 1:1.25 tranny...I'm no expert at all...I cannot even figure out if the MCX is a LS1 or LT1 or what!!!
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Old 03-20-2012, 11:58 AM
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I had never heard the TT motors were any different. The slot tranny can be ordered on any PS 190/197. I do think it is standard on the TT, though.
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Old 03-20-2012, 12:19 PM
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Got the info from Ski Dim...let me know if you ever figure out the mods...
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Old 03-20-2012, 12:44 PM
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I went with a NGK plug that was equivalent to the stock plug. The nice part was that they are available at a local auto parts store and much cheaper than the stock iridium/platinum plugs. If you still need the info, I can look it up tonight on the home computer. I have the same boat/motor/trans combination as you, FWIW.
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Old 03-20-2012, 12:53 PM
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They dug up my order from years ago...seems I have replaced them a few year back so I dont even need them. They did suggest a new cap and rotor though...part 1323...
Good guys!
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Old 03-20-2012, 01:50 PM
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Here is what EngineNut posted:

Actually, in that pre-cat engine.I would not use platinum or iridium plugs.I would use regular AC Delco MR43LTS gapped at .045". Platinum and iridium plugs like to run hot and lean. Relatively speaking, that engine runs cold and rich. You are going to get lots of conflicting answers but this is the recommendation I make to anyone that asks. The reason that engine came with 41-932 plugs in it is because that what GM put in it at their factory but we used MR43LTS in those non-cat engines for years with great results.
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