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Minneapolis Moline Tractors Discussion Forum
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MM M5 cylinder heads

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Bean

08-14-2007 19:37:50




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What casting numbers will fit on an M5 propane?
My M5 tractor heads were 10A4210 and would 10A4206 fit? Would the compression between the heads make much difference? Does anyone know if G705 came out with 3 point, live PTO and amplified torque converter?




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ACEd

08-14-2007 20:57:15




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 Re: MM M5 cylinder heads in reply to Bean, 08-14-2007 19:37:50  
4210 were stock low altitude LP or high alt gas heads at 8:1 CR with standard dished pistons in a 336 M5 motor. 4206 were high altitude LP heads at CR of 9.65:1. 4209 were low altitude gas at 6.5:1. Watch out for the high CR and if you are running flat top pistons the CR quoted are significantly off.



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Dieselbear

08-15-2007 04:25:23




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 Re: MM M5 cylinder heads in reply to ACEd, 08-14-2007 20:57:15  
Witch MM tractors came out with dished pistons?



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MMEd

08-18-2007 13:14:21




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 Re: MM M5 cylinder heads in reply to Dieselbear, 08-15-2007 04:25:23  
I got info out of an old MM Service Letter 265 or 266 - looks like 336A, 504A, HD504A with 10A4230, 4231, 4232, 4233 came with either 10A25953 "Cavity Piston" or 10A21130 Flat Piston - but my notes also have CR with 4209 & 4206 heads in a 336 - but can"t locate reference. Maybe someone else can put these into which tractors or power units.



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