bobbyd
XS650 Member
Hello all,
I've inherited a 74 TX frame and cycle parts along with a 256 engine basket case from which to create a complete bike. The engine requires a full bottom-end rebuild as it was seized from standing for years. As such new pistons, rings, camchain, crank rebuild etc will be needed. However being a 256 pistons, rods etc are neither cheap nor plentiful. This is where I need help in the form of info from members.
I've done all the search variations I can think of but can't find the answers I need. Being that I need a rebuilt bottom end and new top end, I have been considering the MikesXS 750cc kit. However that kit only suits 447 cranks. I'd like to keep the 256 head and cam but run the 750cc kit if possible. In my long-winded way my question is:
Can I simply fit 447 rods to my 256 crank and run 447 pistons?
From what I can find the 256 and 447 rods have the same size big-end so it shouldn't be an issue, at least I hope. This would save me the trouble of converting to a 447 crank, pistons, camchain tensioner asembly and cam gear as I wish to go for a rephase when I rebuild.
Can anybody confirm that a swap to 447 rods on my 256 crank is possible?
Many thanks,
Alex
I've inherited a 74 TX frame and cycle parts along with a 256 engine basket case from which to create a complete bike. The engine requires a full bottom-end rebuild as it was seized from standing for years. As such new pistons, rings, camchain, crank rebuild etc will be needed. However being a 256 pistons, rods etc are neither cheap nor plentiful. This is where I need help in the form of info from members.
I've done all the search variations I can think of but can't find the answers I need. Being that I need a rebuilt bottom end and new top end, I have been considering the MikesXS 750cc kit. However that kit only suits 447 cranks. I'd like to keep the 256 head and cam but run the 750cc kit if possible. In my long-winded way my question is:
Can I simply fit 447 rods to my 256 crank and run 447 pistons?
From what I can find the 256 and 447 rods have the same size big-end so it shouldn't be an issue, at least I hope. This would save me the trouble of converting to a 447 crank, pistons, camchain tensioner asembly and cam gear as I wish to go for a rephase when I rebuild.
Can anybody confirm that a swap to 447 rods on my 256 crank is possible?
Many thanks,
Alex