heres the right srocket to bore ( READ ENTIRE REPLY )http://www.surpluscenter.com/Power-Tran ... 2-15-D.axd
that leaves me having to bore 1/8th or .0625 off the inner wall.( machinist math , reduction of 1/6th on wall = 1/8th bore increase)
My biggest concern is the hardness of the steel..The teeth arent hardened but thats no promise on the shaft.for a better chance of a final reeming pass since i dont have a .625 reemer would be to send along a a 5/8th bit with the sprocket. hell i may even try to punch it with the bit.http://www.ebay.com/itm/5-8-High-Speed- ... Sw1XdUXkVJ
this is the cheapest one i can find , maybe u have one.. YES, i can do the job with a boring bar but if i need serious torque to make the bore the boring bar aint gonna handle it.
And a reamer is even more. Dont buy the bit , at that rate u may as well get it locally machined ( 25 bux ish)
I guess send it here cheap , ill send it back cheap and we can call it a day.. If i cannot get a cut going on the hardened steel i wont even start and ill just mail it back