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MM Head

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PostPosted: Sun Apr 22, 2007 6:14 pm    Post subject: MM Head Reply to specific post Reply with quote

A friend called asking if I could ID a MM head for him. It is for either a MM R or Z motor and the last 3 digits are 083 (that is all he could remember). I can not match those numbers with any heads in my books can anyone tell me what this head is and it's compression ratio?



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PostPosted: Mon Apr 30, 2007 6:04 pm    Post subject: Re: MM Head Reply to specific post Reply with quote

Z or R heads will have a casting number on right side as I recall - it will be RE226C, RE226D, or RE226E - or later tractors 10A2647 or 10A2648. Heads were used on both motors but at different CR - find displacement - easiest is on tag riveted to side of block - and casting number above and I can probably get you CR at least as it left factory.

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