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DooSPX
07-27-2006, 08:39 PM
what spark plugs do I need for a 91 240hp 351W???

east tx skier
07-27-2006, 11:32 PM
This thread should help.

http://www.tmcowners.com/teamtalk/showthread.php?t=10248&highlight=spark+plugs

DooSPX
07-28-2006, 10:35 AM
thanks ETS !!
so autolite?

east tx skier
07-28-2006, 11:12 AM
I've run autolite 764s in mine (changed every spring) since I've owned it and have had success with them. I think the P.O. ran them, too. Get the copper ones.

Bert
07-28-2006, 12:09 PM
what spark plugs do I need for a 91 240hp 351W???
I use NJK UR5. Cross reference to the BRF-3 or ARF-32 specified in my manual. You can use any brand, just make sure you get the correct heat range.
Interesting info. here http://www.ngksparkplugs.com/techinfo/spark_plugs/techtips.asp?nav=31000&country=US

TRBenj
07-28-2006, 05:25 PM
I've run autolite 764s in mine (changed every spring) since I've owned it and have had success with them. I think the P.O. ran them, too. Get the copper ones.

The 764's are the right plug for the HO motor (GT40 heads). The right plugs for a standard 240 horse 351w are the Autolite 24's.

east tx skier
07-28-2006, 06:09 PM
Correct. Sorry, I meant to specify 351 HO. The thread linked below had some people's recommendations for the 351.

Kevin 89MC
08-11-2006, 12:39 AM
The 764's are the right plug for the HO motor (GT40 heads). The right plugs for a standard 240 horse 351w are the Autolite 24's.
That's what I run. Gap is a different issue. See past threads. My old Motorcraft's were gapped at 0.035, the Autolite's were gapped at 0.040 (IIRC). Seems to run fine.
Good luck!
Kevin