The advance curve is vary critical . also with the gas today you varywell melt a pistion and score a hole or all six. I do not have my books here at the house to compare the curve between a 560 and a 656 at this moment . Also while working on the re bush pay close attention to the BOTTOM bushing as it has a slot cut in it , now as to why i am not sure if it allows oil to move up or it is a drain for oil to run down. When we tried the first time to rebush we used bearing bronze and we had the shaft lightly reground to clean it up and make it round again , we had to make a new bottom collier that goes over the oil pump drive . we thought that we had it as we had .0015 clearance it turned smooth , well maybe we needed a bit more clearance i do not know but she did lock up tight as a drum and twisted off the new oil pump i just installed . That dist. was out of a 263 706 and we upgraaded that tractor to a C291 and i recurved the 263 dist to 291 spec.'s . I can not do that anymore as my dist. machine bit the dust and there is no fixen it . And i do not know anybody around here that has one as most of them have been throwen away . So i guess i will not be recurving anymore dist.
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Today's Featured Article - Pitfalls of Tractor Engine Rebuilds - by Chris Pratt. The first pop after you have put the machine together with your own hands is exciting and pleasing. The whole experience can be marred if one moves too fast and makes too many assumptions that they can just use "as is" some parts they should be closely scrutinizing and possibly attended to. In such cases, rework makes what could have been a fun project turn into an irritant or even a nightmare. Minor Irritants To give you an example of an minor but irritating proble
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