At the time of rebuild she started out as a 263 with two AB holes and four C D holes the deck was a little out and .007 was removed from the deck to make here flat. The main caps were ground and the block was line bored not honed . Then the block was set up on a stationary Wynoia van norman Computerized boring station and was bored to take the 263-to 291 over bore off the center line of the crank . So all the bores are within .0002 . Then each piston was hand fitted to each bore all was balanced , head was C/Ced and port matched , cam was rebuilt and blue printed the carb was fattened up a little over the factory jet. Dist. was recurved to 291 spec. Yea , i can ream the jet and adding a needle adjustment screw will do nothing more then the pintle does , when the key is switched on the pintle moves way off the jet and by no means restrict fuel flow. The org. solenoid did come with a adjusting screw and people would try and run them to lean so they did away with the adjustable one and and made the non adjustable one that did not restrict flow . When ya turn the key switch off then the pintle drops and shuts the flow off to prevent dieseling on a hot engine. Now i agree that the instillation of the holley jet could be done , BUT that would set the jet back to far for the solenoid . So ffor now i think that i am going to go back into the carb and do some light reaming . Should have never sold my 1020 Sun as with it i could stuff the tube down the pipe and got a better idea on the mixture.
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Today's Featured Article - Tuning Up Your Tractor: Cooling and Fuel Systems, Hoses and Belts - by Curtis Von Fange. Our tractor is coming right along. The old oil and filter has been taken to the recycler and the air filter replacement has breathed new life into our motor. Let's take a closer look, now, at the cooling system since it has to work so hard in the summer heat. Cooling systems can be real cantankerous in their old age. Radiator cores clog up with rust, lime or other mineral deposits and the fins clog up with weed seeds and debris. The metal headers slowly corrode away from years of use and
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