timsrs

I’m on the look out for some Cosworth rear handbrake calipers
I know hi spec do them
Is there anything for sale out there.
Cheers

Mark V8

iTrader: (2)

Not long left on these 4x4 Cosworth ones on Ebay


https://www.ebay.co.uk/itm/Escort-si...53.m1438.l2649

timsrs

Thanks but I’m after some 4 pots
to go with the 6 pot fronts

Marc sierra

iTrader: (1)

Be careful when using 4 pots on the rear. The rear can easily be overbraked since the pistons in most 4 pot calipers are too big for the rear.

costina

iTrader: (1)

As above a complete waste of money. Just use 320mm discs and those calipers.

timsrs

Thanks
I will be balancing the rears with 6 pot fronts
Hi spec customer service is crap

Marc sierra

iTrader: (1)

How will you be balancing them using 6 pots at the front? The fact there are 6 pistons says absolutely nothing. The braking power is determined by the total surface area of the pistons and in most cases 6 pots calipers have smaller pistons than 4 pot calipers. For instance most AP 4 pots and AP 6 pots have exactly the same total surface area, so wil also give the same braking power.


If you put those AP 4 pots on the rear you will almost have the same braking power front and rear. The only reason the rear will (probably) brake less hard is that the brake disc diameter (so the leverage for the caliper) is smaller on the rear.


It can actually be dangerous messing with your brakes in such a way if you don't know what you're doing. Locking the rear wheels when you need to brake hard at high speed probably won't end well.

timsrs

The pistons on the front are 32mm apposed to 24mm on the rear
Understand completely what your saying and have looked into it
But no don’t want to be facing the opposite way at 70mph

Marc sierra

iTrader: (1)

Are all pistons in the 6 pot calipers the same size? Most of the time they have 3 different sizes. And most 4 pots have 2 different sizes. So what you are saying about 32 and 24 mm doesn’t really make sense to me.