Plus 2 4 pots

[gerrym]

Hi, I've purchased and trial fitted Toyota 4 pots (ex Hilux 4WD 1983 vintage amongst other Toyota applications)

Main advantage is a claimed much better pad. Piston area only up 3%.
Question is has anyone else done this and whose pads did you use. Mintex 1144s?

[peterako]

Hi Gerry,

How are you?

Are they a straight bolt on option?

Must admit though that I have no problem locking my front wheels with the standard triumph callipers....

Thanks in advance,
Peter

[mikealdren]

Gerry,
Great to hear from you, hope the car's coming on well.

I assume that you're just looking at the front so my question would about maintaining front/rear brake balance.

Ideally you want both to take a share of the braking in proportion to axle load so that they lock together (Actually you really want the fronts to lock slightly before the rears from stability).

If you significantly increase the proportion of braking taken by the front brakes, the fronts will lock up while under-using the rears and you end up with worse overall performance.

Best wishes
Mike

[gerrym]

Mike,

very small increase in area of pistons so should not significantly affect balance. The Zetec (with air-con compressor almost sorted) will increase the front weight bias in any case. My fall back position is to install a manual bias adjustment valve, for major loading changes. I.e. driver only to driver plus passenger plus full holiday gear.

The 4 pots only real advantage is much bigger and more consistent pad area: this should in theory much reduce fade whilst still sticking with relatively soft and disk friendly friction material. Hence my question re the Mintex formulation. Measure weight difference was plus 400g

Yes, the calipers are straight bolt-ons. This is for a plus 2, so sorry because I've really posted this in the wrong forum.

If you google on TR6 (which shares the Girling caliper with the plus 2), you will find various write ups on the swop. Rimmers provide the special metric /imperial bolt (12mm shank/7/16" thread) needed for mounting. No triming of dust shield. You will need to make a new rigid brake pipe piece.

Regards

[steveww]

As already pointed out the caliper is the for the +2 and the GT6. Looking in the catalogues of the Triumph suppliers you will find a number of 4 pot kits that will fit. Most are based on the Wilwood range which are race items with out the full dust shields, the reason I have yet to fit them. The light weight alloy type 4 pot will save a considerable amount of unsprung weight. However I also have concerns about front/rear brake balance with these.