Re: Considering upgrading brakes - Toyota calipers
I put together the following information from the above posts. Looks like it's time to start ordering parts! David K.
TOYOTA CALIPERS / MORGAN WHEEL CYLINDER BRAKE CONVERSION INFORMATION
(FROM VARIOUS BRITISH CAR FORUM POSTS)
The parts needed and the relevant Toyota references are:
Left Caliper: Toyota P/N 47730-35080
Right Caliper: Toyota P/N 47750-35080
Top Shims, springs and pins will be needed unless you get a fully kitted out caliper.
There are two types of shims- plain and "vented" , the vented go next to the pad, the plain against the caliper.
The springs go across the caliper to tension the pads, and a retaining clip goes between the pins. The required information:
Shims 1: Toyota P/N 47744 (set of 4)
Shims 2: Toyota P/N 47745 (set of 4)
Springs 1: Toyota P/N 47748 (set of 2)
Retaining Clips 2: Toyota P/N 47748A (set of 2)
Pins: Toyota P/N 47748B (not sure about the "B", the copy was not as good as it could have been, the P/N is for one)
The VTR article was written by a racer who would presumably regularly check his brakes. The stock disk is 1/2 inch; the Toyota caliper uses a 20mm disk (I think). I've a concern that the pistons will extend further than their normal range, so I will make a set of additional shims to fit under each pad to make up the difference. I've not yet done this, but it should help everything fit together happily, once I do get around to putting it all together again.
ISTR the #s are Cardone 17820 and 17821. Double check though - you want the ones from the 4WD.
https://www.rockauto.com fully loaded Raybestos with premium semi metallic pads for $77.99 each. 79-85 Toyota 4x4-p.u. and 84-85 Toyota 4runner. You can buy the TR6 late model metric mounting bolts that fit the Toyota calipers from TRF for 8.50 each, Victoria British wants around $9each. Don’t forget to trim off the dust shields 5/8" on each end. The Rock Auto part numbers for the calipers are RC3466 and 3465
The custom hard lines are available from
https://www.trparts.com $39.00 for both (stainless steel).
Morgan rear wheel cylinders
VB - P/N 7-946.
Cost $29.95 each last year.
FYI, The only performance pads that seems to be available for the Toyota calipers, Axxis part number n1010-119099 (Ultimate Ceramics) available at
https://www.drivewire.com
Mounting Bolts: TRF still has them for $8.50 a piece, pn 158668