Posted by HumptyD on June 04, 2013 at 21:22:39 from (199.200.27.9):
Been reading the forums for a few years.. but never needed to ask any questions until now.
Took in a '41 BN on trade for a few dumpsters I did for a client. Took it because my father was born in '41 and has talked about owning a JD even though he lives in the suburbs of Chicago. So I figured why not one for the year he was born... nice B-day gift... and to drive the grand kids around the neighborhood and possibly some local parades. He wanted to scrap it last year because it sat untouched, but now has changed his tune since I tore it down and took the head and cylinder in to be worked.
Anyway, just getting around to rebuilding it. Took the head in and found I only needed new intake valves, everything else was fine. Just replacing them and a nice shave to level if needed.
Now comes the cylinder. After reading other posts, I found out the max bore is 4.75". So with that stated, if bored out to 4 11/16, I can use late B standard pistons without any modifications? I know I have .045 option... but can't find .090's anywhere... even Sharp's. Just covering just in case the head doesn't need to go to 4 11/16
They haven't started the work yet, just making sure before they start to machine it. This is the first tractor they've done, but have many years with both cars and diesel trucks under their belt. Their equipment can handle the bore size.
This is our first tractor... all I know about B's is from reading forums and literature about them. Thanks in advance for your time and input.
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