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170 engine suffix ?
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Tracy Martin TN View Drop Down
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Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10781 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tracy Martin TN Quote  Post ReplyReply Direct Link To This Post Topic: 170 engine suffix ?
    Posted: 06 Oct 2012 at 5:10pm

What does the letter M, and Z mean at the end of engine serial number? Thanks Tracy Martin
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Gary in da UP View Drop Down
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Joined: 13 Sep 2009
Location: EUP of Mi.
Points: 1885 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary in da UP Quote  Post ReplyReply Direct Link To This Post Posted: 06 Oct 2012 at 6:41pm
 M code engins are found in most D17's,   170's  and Gleaner E111's have a little more compression an those are z code. D 17 lp and 175's have even more compression and are V code engines.
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Tracy Martin TN View Drop Down
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Joined: 11 Sep 2009
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Points: 10781 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tracy Martin TN Quote  Post ReplyReply Direct Link To This Post Posted: 06 Oct 2012 at 8:30pm
I was wondering. I have an M code and 2 that have the Z code. Thanks Tracy Martin
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DanD View Drop Down
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Points: 856 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DanD Quote  Post ReplyReply Direct Link To This Post Posted: 06 Oct 2012 at 8:36pm
The M code is 7.2:1 compression ratio.  The Z is 8.0:1 and the V is 8.2:1.   Of course all that's different in the engines to change the ratios is the piston heights, so who knows what is actually inside on a 35 to 50 year old engine.  I know of an M engine for example, with 8.2:1 pistons in it.  
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