GT-40 Spark Plug recommendations?

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   Gentlemen,

Question of the day,   

2001 GT-40 in a Sport Nautique, I see that the Owner's manual recommends AWSF 22 or equivalent, but I'm curious about a platinum plug.  Autolite web page shows Iridium XP25 as compatible. 

Any experiences good, bad or otherwise?

Thanks for any and all help!    
KP

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MdFooter Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Senior Member Joined: January-30-2008 Location: Lakeland, FL Status: Offline Points: 100	Post Options Post Reply Quote MdFooter Report Post Thanks(0) Quote Reply Topic: GT-40 Spark Plug recommendations? Posted: June-07-2016 at 3:19pm
	Gentlemen, Question of the day, 2001 GT-40 in a Sport Nautique, I see that the Owner's manual recommends AWSF 22 or equivalent, but I'm curious about a platinum plug. Autolite web page shows Iridium XP25 as compatible. Any experiences good, bad or otherwise? Thanks for any and all help! KP
	KP 1st85 Nautique 2nd

Jonny Quest Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 3032	Post Options Post Reply Quote Jonny Quest Report Post Thanks(0) Quote Reply Posted: June-07-2016 at 3:33pm
	Autolite 764 is the plug for the GT-40 engine. You don't need platinum, iridium, etc. The Autolite 764 is a copper core plug in the proper heat range for your 351 engine. JQ
	Current 2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum

KENO Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11275	Post Options Post Reply Quote KENO Report Post Thanks(0) Quote Reply Posted: June-07-2016 at 7:51pm
	Some places will tell you that 764's are being discontinued. That probably means there's only a 20 year supply left floating around out there. Autolite 104 is the replacement for the 764 and is functionally the same plug, only difference is that the 104 has full threads on the body and the 764's are only threaded halfway. If you look inside the plug hole on a GT-40 or 40P, it will be obvious why either will work. Edit, you'll also see why an Autolite 25 physically won't work in a GT-40 or 40P head.

MdFooter Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Senior Member Joined: January-30-2008 Location: Lakeland, FL Status: Offline Points: 100	Post Options Post Reply Quote MdFooter Report Post Thanks(0) Quote Reply Posted: June-08-2016 at 12:52am
	Thanks for the excellent info guys. Autolite 764s it is. Even Amazon has them.
	KP 1st85 Nautique 2nd

GT-40 Spark Plug recommendations?

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