Thanks guys for the advice. Erm, sorry, what is a BB?! The bike was, I always thought, english. Obviosly shimano are jap though. I live in England. The brakes are centre-pull - is that DA parapull?! The brake levers have the cables going through the backs and through the bars! I thought this was very swanky when I were a kid. I cant take photos yet as it is not with me but will be from sunday. I will take pix of it then if you like! I also think it probably has non-standard part - I recall the bearings around the forks/headset for some reason. The frame is all reynolds tubing as I recall (its in my faythers shed which is why I cant photo it at the mo, but I am visiting him on the weekend)
Robsa
Oops OK BB = bottom bracket. I am an idiot. Again pretty sure its shimano but will check sunday - 'cotterless thread' is about as much as I can tell you. I think ALL the kit on itr is 'dura ace'? does that sound right?
PS thanks for the advice about top bracket!
DuraAce Parapul brakes do not use a straddle cable, but instead have a cam that bears against both brake arms. If you have conventional centerpulls things do not look good for modern upgrades.
Good luck
Mel