First time working on 4020s. Trying to learn as much as I can about them since there are 3 of them on the farm and none of them are running.
A little History,
One is a 69 with a busted rear housing and bad injection pump (cb style pump). The other is a 67 where engine just spun a bearing. During hay season last year the 67 injection pump went out, so they had it rebuilt. The rebuilt pump leaked diesel into the oil and the engine eventually seized up (temporarily). New pump installed and oil changed. It was ran like that until it spun a bearing. Pulled it apart and the crank is scored enough it needs to be turned.
I am thinking there are possibly two ways I can go with getting one into usable shape but I need some info/suggestions.
1st. overhaul the 67, have the crank turned, and reinstall. The only thing I don't know about doing this is if the block was damaged when it seized. Or if it even could have been. (This also seems to be a considerably more expensive option)
2nd. Pull the front half of the 69 and put it on the back half of the 67. (If this does work I have several other questions)
Since the 67 and 69 are "early" and "late" model 4020s will the engine mount the older back half?
Are there differences in the external dimensions of the blocks? I see the hole and mounting for the injection pumps are different but not sure of what else.
A little History,
One is a 69 with a busted rear housing and bad injection pump (cb style pump). The other is a 67 where engine just spun a bearing. During hay season last year the 67 injection pump went out, so they had it rebuilt. The rebuilt pump leaked diesel into the oil and the engine eventually seized up (temporarily). New pump installed and oil changed. It was ran like that until it spun a bearing. Pulled it apart and the crank is scored enough it needs to be turned.
I am thinking there are possibly two ways I can go with getting one into usable shape but I need some info/suggestions.
1st. overhaul the 67, have the crank turned, and reinstall. The only thing I don't know about doing this is if the block was damaged when it seized. Or if it even could have been. (This also seems to be a considerably more expensive option)
2nd. Pull the front half of the 69 and put it on the back half of the 67. (If this does work I have several other questions)
Since the 67 and 69 are "early" and "late" model 4020s will the engine mount the older back half?
Are there differences in the external dimensions of the blocks? I see the hole and mounting for the injection pumps are different but not sure of what else.