Posted by Wild Bill Caldwell on January 09, 2009 at 07:52:54 from (67.33.127.247):
Okay...Here We go, first of all there are certain parameters that can't be deviated from. #1 The block must be a 251069! I know I can put a Super C engine in this tractor, that is not the goal. #2 The tractor still must be able to do what a Super A was meant to do....plow, disc, cultivate, run other machinery off the PTO for instance...and not run hot, must be easy to start Hot or Cold...Yaw'll know what I mean, probably better than I do.
Gene....The holes in the bottom web will have to be enlarged .210.. Gene, You shouldn't put the ideas in My head, like the shaved head, 340 head, 42 HP, after all I'm not the purest angle singin' in the choir. How much do You think the 240 head could be shaved and still fit rule #2
Tractor Vet...3 1/4" looks to be as far out as this engine could be punched, granted it could go .030 possibly more But bear in mind I already have the 3 1/4" pistons
Mr MacKay...Right now there is over .750 of metal between the holes in the bottom web. Removein' .210" still leaves.540"
The more I look at this project the easeier it gets. I've got a price in mine I'll pay to have this done, over that I'll bring it home and do it Myself. As I've said before I'm blessed from havein' spent a few short years workin' around My Father and Grandfather ( way too short ) one of the things I learned early on was heatreatin' and how to make D reamers or what is sometimes known as Cannon reamers. This has helped over the years when I would have an idea for a "WILDCAT" cartridge, I don't have to wait for a tool company to make a reamer, I'll make a D reamer. I can't guess over the years how many D reamers I've made for spindle bolts and bushin' etc. With that said, here is what I think is the easiest way. I'll take a peice of 01 steel 3 1/2" in dia. ,4" long. Block is upside down on the millin' table. On My lathe startin' on the round bar I'll turn it down to 3.225 for a distance of .5" That will serve as a pilot. For the next 1" I'll turn it to 3.435" , this is the hole I need for the sleeve, rest of the way or maybe no more than an inch or so I'll, turn to 3/4", this will fit a 3/4 collet in My mill. I'll take this peice I've just made in the lathe, go to My mill and remove 49% of the part turned to 3.435 and cut a releif grove behind the leadin' edge, lookin at this part from the side it looks like a D , hence the name D reamer...I'll heat the forge up. heat the 01 till it loses Magnetic attracttion,get a few degrees more, quench in oil, place in the oven for several hours at 300 degrees and I'll have a tool than is piloted and will do a good job. Cuttin' the grove for the seal ? That is an easy one but it might be easier to silver brase the sleeve to the web, just to make it watertight
And that is where We are now....If any of You HANDS see any thing wrong with this please let Me Know.
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