4 pot squeezers?

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trolleybus
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4 pot squeezers?

#1 Post by trolleybus » Wed Aug 02, 2017 12:17 am

I was looking at some four pot break calipers for sale at a reasonable price here in Australia. They would be for my 1977 2500TC.
They are specified for a Land Rover Discovery non vented disk. They certainly look like they will do the job, anyone know if they will?
Bernard (Australia)
1977 2500 TC Auto EFI
1956 TR3 since 1980
1989 Saab 900 Turbo

torque2me
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Re: 4 pot squeezers?

#2 Post by torque2me » Tue Sep 05, 2017 7:47 pm

trolleybus wrote:I was looking at some four pot break calipers for sale at a reasonable price here in Australia. They would be for my 1977 2500TC.
They are specified for a Land Rover Discovery non vented disk. They certainly look like they will do the job, anyone know if they will?
The only 4 pot I know off (in a comparison article by Chris Witor) was the Wilwood. Do you have Disco's in the breakers in Aussie Land. If so, ask if you can check them over and whilst there pick their brains. It's amazing what knowledge they have.

I guess you know it is very likely you will have to go up a wheel size but luckily for you GKN did 15" alloy wheels (which were 14" UK). I can't remember their model name. You will be tight on wheel width.

Kev

tony
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Re: 4 pot squeezers?

#3 Post by tony » Wed Sep 06, 2017 4:47 am

I fitted Austin Princess ones many years ago. IMO not really worth the trouble.
Tony.
1976 2500 TC.

Lots of bits

1999 BMW Z3.
2003 BMW 525i Touring.
Hopefully not needing too many bits.




.
Hopefully don't need bits !

torque2me
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Re: 4 pot squeezers?

#4 Post by torque2me » Wed Sep 06, 2017 6:38 pm

tony wrote:I fitted Austin Princess ones many years ago. IMO not really worth the trouble.
Tony.
Quite. In the comparison article I think Chris also included Volvo (might even have been a 4 pot) but results were low excepting the Wilwood. As you might have said, a lot of effort for 10%.

Kev

sprint95m
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Okay....

#5 Post by sprint95m » Mon Sep 11, 2017 9:11 am

About 15 years ago I fitted a four piston calliper conversion to a T2500.

The calipers were from a Jaguar XJ12 (series 2?) and the discs were Renault 30 vented.
There is a fair lot to do to make it work:
The calipers have to have the mounting holes plugged and new holes drilled.
The hubs need machining to take the discs.
Bespoke front flexible hoses are required and also bespoke hose to caliper pipes.

The brake master cylinder needs to be changed for a 7/8" (22.2mm) bore unit.
I used a Sherpa/LDV servo and BMC.


The difference in braking is quite staggering but you quickly take it for granted.
It is very advisable to fit high level brake lighting.



The downside of this conversion is the weight of the calipers, they are very heavy,
but again you do get used to it.
If I was to do another conversion, I would use Wilwood calipers.
Ian,
owner of a Dolomite (1850) now after having run a 2500S (for 4 years), a Dolomite 1500HL (for a few months),
a Dolomite Sprint (for 10 years) and a second 2500S (for 5 years until 2007).

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