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Re: To rebuild or not to rebuild Farmall M engine
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Posted by Don't fix what ain't broke... on March 31, 2000 at 20:54:25 from (167.142.17.236):
In Reply to: To rebuild or not to rebuild Farmall M engine posted by MEDFARM on March 31, 2000 at 20:22:30:
Ray- Sir! Could be I'm not understanding something about your post. It looks like you've done good maint. and some catch up maint. Compression test numbers are subject to a long list of if and maybe qualifiers. Seventy five might be good on one engine and one fifty poor on another. One that you gotta believe, and can make decisions on, is uniformity down the line. One ten sounds reasonable for an old low compression ratio engine. If you "just gotta know", do a cylinder leak test, do a hot running at governor speed oil pressure reading with a known accurate gage, look for big blow by out the crankcase vent, then replace hoses and belts... And quit worrying and run the thing for another twenty years! Service all the gear boxs and hydraulic systems with lube and filter changes. Replace rubber boots and gaskets that keep out water and dirt. Give that oil bath air cleaner a proper service and replace the rotten hoses on the carb feedpipe. Cut the fuel line and install a metal can in-line fuel filter in a loop that puts the filter about an inch lower than the bottom of the carb. Then pull the plug on the bottom of the carb and let the system flush itself. Booster gap and increased heat range number spark plugs are another trick. Yes, these old machines have been "rode hard and put away wet". But, they were built to do it. If that engine really is wore out, yes, do an overhaul. With 110 compression my guess is that all you need is maintenance actions. Jest for old times sake, toss the muffler and put a 4' stick of corregated rain pipe on the exhaust stub. Grins and good luck, IHank
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