Re: Piston rings

In Reply to: Re: Piston rings posted by Bruce(OR) on January 23, 2023 at 00:48:17:

Well with this discussion of lands and grooves I decided to actually measure the grooves on each piston and they are different!!! So I started researching rings sizes and there are about 8 different piston manufacturers and several different groove combinations. The 8N pistons top two were .0093 and the third groove is 0.1875. The top and second rings on my 9N pistons are 0.116 and 0.099 respectively and third is 0.156 as is the forth. Just 8N's doesn't detail the sizes in it's set of four rings, Yesterday's tractors has 2 top at .093 and the last two as 01875. Others have 5/32 and 3/16 combos, etc. Finding the correct set for my pistons is going to be a real chore. May have to scrap these 9N units and get new ones.

Someone in this club might want to do a detailed article on the evolution of the pistons and rings for the 9, 2, and 8N engines.

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