Groove in H piston

D- · Apr 18, 2014

Was there a good reason for the extra "ring" groove in the head end of the piston other than to fill with carbon?
Would it be a bad idea to try to find a narrow ring to use in that groove?

Kent Petersen · Apr 18, 2014

just leave it alone if a neither ring was needed JD would have put it in there

bill mart · Apr 18, 2014

why do you think they put an extra groove? there must have been a reason , why go through the extra cost/effort to have an extra groove. Bill

Mike Aylward · Apr 19, 2014

It is my understanding that the groove was designed to fill with carbon and then to act like a heat sink for the rest of the piston. There is information somewhere in the old service bulletins about that. Mike

D- · Apr 19, 2014

Well it does fill with carbon. Thanks

Groove in H piston

D-

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Kent Petersen

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bill mart

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Mike Aylward

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D-

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