Since I´m waitng for parts for finishing the front and rear suspension I went back to thinking about the brake system. I have a good plan and most of the parts for the discs and calipers but I would like a dual circuit brake system. I have found some evidence that people have used xj6 master brake cylinder and some 420 master brake cylinder but I have not found any details.

This is my wishlist:
1. Cheap
2. Easy swap

I will probably find that niether 1 or 2 is so eay to find.

There is really no problem with minor work like adapter plate or things like that. I was think of a volvo 240 master brake cylinder but the s.38 has the original tilted upwards and I think that might be a problem.
I also have to consider the total area of the pistons versus the brake cylinder diameter. Will use xj6 s1 rear calipers and volvo 240 4-pot front calipers, might need larger master brake cylinder.

All ideas are welcome!

Karl

 

I think Primaz had dual circuits, might be worth looking at his s type sleeper thread

 

Read through Primaz thread this morning but couldn´t find anythind about the master brake cylinder. Will ask him later now I must get to the garage.

 

https://www.jaguarforums.com/forum/m...grades-161729/

https://www.jaguarforums.com/forum/m...pgrade-181981/

 

Thanks!

I´ve been looking at my piston to master cylinder ratio tonight. I will increase the front piston area with 26% and the rear with 56 %
When I bought the rear calipers, that I still haven´t confirmed that they fit, I looked only on fitting them and widening the to accept 19 mm vented disc.
I guess I need to work out the right size of master cylinder or else I might get a spongy pedal that locks the wheels at 100 mph and maybe some adjuster for the pressure to the rear wheels.

Did that to my honda cm400, fitted one brake caliper from a gsxr600 2005, now it stops better but also locks the front wheel at 60 mph if provoced hard.