Sparkplug ???

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Mar 23, 2014 | 11:24 PM

#31

bruno2

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Joined: Nov 2009

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From: Broken Arrow , OK

So Jim these part numbers break away from the pattern in the link you provided. I don't know how to decipher them. However, it looked like some of the NGK plugs were getting hotter rather than cooler.

Mar 24, 2014 | 07:42 AM

#32

ArdWrknTrk

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From: EXTREME southwest CT

'R' plugs are "racing" and don't follow the formula.
http://www.ngksparkplugs.com/pdf/DYK...Spark_Plug.pdf

274 & 272 are regular length plugs.
You need that 'S' on there... and I don't see where they list them.
Perhaps a short plug does not have enough length to make one that cool.

Same story in NGK.

Mar 24, 2014 | 10:01 PM

#33

bruno2

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From: Broken Arrow , OK

This is from Accel:
Scott, Mar 24 15:03:
Hello,

Our heat range on our plugs range from 1 - 7 with 7 being the hottest. The heat range is represented in the fourth numerical character of the part number.

Our 0414S-4 would have a heat range of 4 and the 0576S-4 would be a 6.

Please let us know if you need additional help.

So my plugs(0276S) are one step down from the hottest.

Mar 24, 2014 | 10:04 PM

#34

Gary Lewis

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Joined: Jul 2010

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From: Northeast, OK

That sounds pretty hot. Time for a colder plug - and a call to James. But, I forgot to look for the special plug socket - will do tomorrow. I hope. Text me?

Mar 24, 2014 | 10:13 PM

#35

bruno2

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From: Broken Arrow , OK

NGK replied to my email with an extremely short, but weak response. I honestly expected a better answer from them. Seems like you are on your own if dealing with their products.