Posted by Roger46 on August 24, 2010 at 17:46:35 from (72.100.13.139):
Last winter I completely rebuilt my Farmall A engine including new sleeves, pistons, rings, bearings, reground crank, new valves/springs/guides, hot tanked block, and new clutch. Basicly, it is a new engine. I have a Woods 60" belly mower on this tractor and have been cutting grass all summer on a weekly basis as we have had a lot of rain this year. It takes about 1 1/2 hours to cut the grass and with all the rain, the load on the tractor is substantal and variable. I installed step pistons from Tisco, so I have much more power than I used to have. The problem I am having is that the tractor smokes every time I start it (hot or cold) and it smokes when it is idling. It doesn't smoke under load (unless it is burning it better). It seems like a valve guide problem, but I put in new valves and guides. It has used about 2 quarts of oil this summer. I also thought maybe the rings haven't seated, but I don't know why or what to do about that. This is not like my first engine overhaul as I have done many other tractors without this problem. Can anyone make any recommendations? One additional piece of info is that this tractor did similarly before the overhaul, so is there something wrong in the head that didn't get corrected at the machine shop I took it to? Roger
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Today's Featured Article - Oil Bath Air Filters - by Chris Pratt. Some of us grew up thinking that an air filter was a paper thing that allowed air to pass while trapping dirt particles of a particles of a certain size. What a surprise to open up your first old tractor's air filter case and find a can that appears to be filled with the scrap metal swept from around a machine shop metal lathe. To top that off, you have a cup with oil in it ("why would you want to lubricate your carburetor?"). On closer examination (and some reading in a AC D-14 service manual), I found out that this is a pretty ingenious method of cleaning the air in the tractor's intake tract.
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