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Thermal grade for spark plugs
https://www.slantsix.org/forum/viewtopic.php?t=38250
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Author:  SL6 CHILE [ Wed Dec 09, 2009 4:58 am ]
Post subject:  Thermal grade for spark plugs

Hi guys, what´s the correct thermal grade of spark plugs on a standard slant 225?

Author:  SlantSixDan [ Wed Dec 09, 2009 8:24 am ]
Post subject: 

Up here in North America, the 1975 and later slant-6s use a (physically) different spark plug from the 1974 and earlier engines. I'm not sure if that same change was made in South America. Can you show us a picture of one of your present spark plugs? Or tell us its number?

Author:  SL6 CHILE [ Wed Dec 09, 2009 8:42 am ]
Post subject: 

Ahhh, yes my slant use a conic seat and de thermal grade is # 16

Author:  SlantSixDan [ Wed Dec 09, 2009 11:15 am ]
Post subject: 

OK, so that is the same newer type of spark plug that was used in North America. I am guessing your #16 is maybe a Champion number, in which case that seems too hot. Can you get NGK spark plugs? If so, try a #UR5.

Author:  SL6 CHILE [ Fri Dec 11, 2009 10:08 am ]
Post subject: 

Dan correct number is T16PR-U11 and is make is denso, Thanks

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