SOHC.co.uk Forums > CB750

F1 Caliper welding, answers needed.

(1/2) > >>

chips1953:
I have a front caliper that has been drilled to force the piston out. A cut down M6 bolt has been screwed into the hole to allow the caliper to be used again.
When I stripped the caliper down I found the tapped hole was not good. Can this be welded or can I drill and tap M8 from the inside, use a countersunk bolt, insert it from the inside, putting an M8 nut on the outside?
I'm worried the welding may damage the internals of the caliper bore and can't see any new or used on the net.

Spitfire:
Hi, where has the hole been drilled ? I would guess that it is in the front face of the caliper if so there may not be much meat there and with the corrossive nature of brake fluid and the pressure in the system I would not be very happy going down the drill and re thread route.

I would definately go down the weld route if you want to save the existing caliper, but I am not an expert, I don't know if this could be done without distorting the caliper.

Keep looking for a second hand caliper they do come up on eBay, not so many for the CB750F1 as I found out when I wanted one but they do come up. The same applies to Brake pistons I had to fork out for an expensive stainless one from the US via eBay, as the F1 piston is a different size to all the K ones.

Cheers

Den

I put this together to check the compatablity of other CB750 brake parts

chips1953:
Thanks for that Den..... 'll keep looking on Ebay.
Very useful list

Bryanj:
Have you asked at Dave Silver?

chips1953:
Well I rang D S yesterday after you mailed and they were still in the shop!!!!!
The system was down but they don't hold out much hope, so did a worldwide search on Ebay and came up with an item in Salt Lake City. 17 hours to go. I may scrap the other caliper then no will use it unless some on the site has a different idea.
Thanks once again.

Navigation

[0] Message Index

[#] Next page