Posted by RN on October 16, 2007 at 17:41:53 from (69.130.242.123):
In Reply to: Engine overhaul or not? posted by MT in Walford on October 16, 2007 at 17:28:39:
Compression check- is it within 20% of factory top? Oil use/smoking. Oil pressure, rod knock, piston slap. Pull head and oil pan- measure cylinder/piston clearance- .025 per inch of bore roughly/roundness of cylinder within .010/.020, can you wiggle piston sideways more than matchbook thicknes(.020/030) easily? Can you wiggle connecting rod/shake up and down?- plastigauge within specs? Does the 3 plow tractor have trouble with 2 now? Hard starting, backfires, worn valve guides (wiggle valves), cam worn down, valve- seats burned/recessed? Some things to check. What kind of engine/vehicle? RN.
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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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