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Diesel Spark Plugs

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Wardner

10-13-2006 06:40:01

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Are they all the same from tractors to construction equipment and among the various sized engines?

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Nebraska Cowman

10-13-2006 09:30:57

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Re: Diesel Spark Plugs in reply to Wardner, 10-13-2006 06:40:01

I doubt it. The MD used a Champion D89D which is a long electrode HOT plug. The older gas start diesels with 7/8 thread use the W89D & that's what I run in my F20. I am quoting numbers from memory so somebody will correct me if I am wrong.

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Bob M

10-13-2006 10:00:24

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Re: Diesel Spark Plugs in reply to Nebraska Cowman, 10-13-2006 09:30:57

Hey Cowman - Those numbers sound right! The MD - also TD-6 and UD-6 - use the D89D plugs. It has 18mm threads and a crazy long electrode extension.

The W89D plug is somewhat similar but with with a larger 7/8" thread. A friend's UD-18 power unit uses 'em. I also seem to recall seeing them once in a TD-24 crawler.

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Janicholson

10-13-2006 06:47:08

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Re: Diesel Spark Plugs in reply to Wardner, 10-13-2006 06:40:01

I think so, but that is based on only seeing one number on plugs offered for sale. Some have used D21 champs, but my MD would not start as well with them. JimN

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RustyFarmall

10-13-2006 07:00:35

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Re: Diesel Spark Plugs in reply to Janicholson, 10-13-2006 06:47:08

I have a new in the box Champion DL-8C, for a Waukesha/Hessleman Diesel.

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