Check the water pump like said below and also check the fan hub bearing and also the gen.- alt. Case I H has the kit , but you will have to dig into your wallet as it is not cheap . But myself i feel it is worth it . Now there are a couple other things that need done when you go from 263 to 291 . (1) ya need a dist. from a 291 at the total advance curve is different and a carb off a 291 as it had a few different jets in it . Then the block will need bored to take the new sleeves . When i do that change over i hae the deck cleaned up and the contour bores recut so everything is dead on. Then i have the head dusted so that it is flat and true . Try not to remove to much . Then before you put it back together i chase all head bolt hole with a 1/2 x13 bottoming tap to clean them out and chase the threads on the head bolts so that they all turn free.and that you get a good set. It will make a whole new 706 out of it. Oh and also fit each piston to the bore and give .004 skirt to wall clearance as these new Cast pistons do swell big time . And you must run the 93 octane gas .
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Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t
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