Posted by rustyfarmall on July 01, 2009 at 06:44:10 from (209.152.78.140):
In Reply to: M loss of power posted by FarmallFred on June 30, 2009 at 18:08:56:
FarmallFred said: (quoted from post at 18:08:56 06/30/09) Recently rebuilt my M with 4" domed pistons. Since this was bigger than stock, I drilled main jet slightly bigger to make sure it was getting enough fuel, governor is rebuilt, electronic ignition in dist., head machined, etc... Ran good, but now it seems to fall on it's face when I lug it down. I pulled a plug and it looks pretty black. Will this allow it to run great until under load, or could I have more going on than that?
You ruined a perfectly good carburetor. That main jet is no longer available as a replacement part.
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Today's Featured Article - A 1937 John Deere Unstuck - by Gary Hickman. Here is my story of how I got the pistons out of a 1937 JD B that the engine had been stuck for about 14 years: About 12 years ago my Dad gave me one of the tractors I ran as I was growing up on our farm in central Nebraska. The engine on this tractor, a 1937 John Deere "B", had been stuck for 2 years before he gave it to me. This last spring (1999) I hauled the tractor to our 2 acre lot in St. Libory Nebraska where it joined my antique machinery collection, at that time a 1929 Caterpillar T
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