Posted by glennster on November 14, 2007 at 05:52:42 from (76.224.26.7):
been fightin my minnie moline big mo500 loader backhoe. 4cly gas 206 cu in. way too much under hood heat. fuel tank sits behind motor, front mounts to exhaust manifold on one side, engine block on other.builds up so much heat after a while it will boil fuel in gas tank. was digging the other nite, noticed exhaust mainfold was brite red, dang near could of brazed on it. opened the main jet to put more fuel to it, brought the color down alittle but still looked to hot to me. tractor runs good otherwise. im gonna try setting valve lash on exhaust a little looser, book calls for .010 hot, ,018 cold. timing calls for 27 degress at 1750 rpm. thinking on maybe giving it a little more advance. engine temp runs 190 when hot, coolant doesnt boil over. any other ideas to get temp down? exhaust manifold is new, no vaccuum leaks, carb rebuilt. she drinks plenty of fuel so i dont think it lean. i been running her now with the hood off to get rid of the excess heat.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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