caliper pistons

[BERNIEHUMBER]

HI:This Monday I am having another crack at getting the MC out of that 69 Europa at the father-in-laws. I have taken off the front brake caliper and am in the process of rebuilding it.I did a search and come up with the fact they are Triumph in origin but are they from a Spitfire or a GT6?
The pistons are miked out at Diameter 48.1mm and Height 28.9mm.
Which Triumph (Piston/boot/seal) would this brake be found in?
Thanks
Bernie

 

[BDA]

I'm pretty sure the calipers come from the Spitfire. In any case you should be able to get rebuild kits from the usual suspects (r. d. enterprises, Dave Bean, JAE, etc.). IIRC, r.d. sells stainless steel replacement pistons.

[4129R]

Spitfire.

GT6 are bigger. I have those on my garage floor side by side.

[EuropaTC]

Hi,

As BDA says,  it's Triumph Spitfire/Herald, mid->late 60s variants. They are Girling Type 14 calipers, the GT6 has Type 16 calipers with 54mm pistons.  If you're buying from one of your specialists then you'll have no problems in getting parts, but if you're buying from a general motor factor, quote the specific caliper type rather than "Spitfire/Herald". Some very early Triumphs had type 12 calipers which apparently is a fractionally different piston size although still a nominal 48mm and I think the dust sealing arrangement is different as well.

Although rusting pistons isn't a massive problem, if you have the option of a stainless alternative I would go for it, that's one potential problem solved for good.

Brian

[BERNIEHUMBER]

HI Folks:Thanks for the quick replies.I have some fodder to go to suppliers with and hopefully come up with a solution!!
Bernie