Yes looking at building up the fork, can use either Oxy or TIG so just need to know the best rod to use and where to get hold of them that isn't in a bundle that costs a fortunePresume your intending to build up the fork? are you going to be using Oxy Acetylene or TIG -The Aluminium and/or Manganese bronze (they're pretty much the same composition) fork is likely to have a fair bit of Zinc in it that's likely to sh*t up your Tungsten if you want to use TIG to lay the metal on.
If I was using Oxy Acetylene I think I would use a 9% Nickel bronze rod to build up the faces of that fork.
Unfortunately anything other than bog standard rods seem to cost a fortune; I've found that it's difficult to get suppliers to split a pack when they can't be sure that there will be another punter coming along for the remainder anytime soon.Yes looking at building up the fork, can use either Oxy or TIG so just need to know the best rod to use and where to get hold of them that isn't in a bundle that costs a fortune
As well as general racecar fabrication stuff, I have used these rods to weld up a bronze vintage car water pump, not sure about your clutch fork, there isn't a huge amount of Aluminium in most Aluminium or Manganese Bronze alloys, so from a a melting point perspective the Nickel rods should be OK. Nickel Bronze is really hard, but machines well. Brass and bronze are as soft as toffee at any sort of red heat,so it'd be worth placing the fork ends on a fire brick or a chunk of Supalux before you get to work.I noticed the 9% nickle bronze rod you suggest is probably sifbronze does that work ok on the forks?