Bleeding T-Bird/Taurus calipers
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Bleeding T-Bird/Taurus calipers
So I've installed (1) rebuilt taurus and (1) rebuilt t-bird rear caliper on my 86(cheapest R-L pairing on rockauto), as well as a remanufactured 86 BMC. I've replaced the proportioning valve with a union fitting. Stock calipers up front. We've bled the brakes numerous times and we can still turn the rear rotors by hand when the brake pedal is pressed and held(single time). If the pedal is pressed two or three times and then held, the rear calibers grab. Any ideas? Is it possible that the 86 master/booster combo doesn't move enough fluid for this set up? Air still in the lines?
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Re: Bleeding T-Bird/Taurus calipers
Is it possible we have the calipers reversed R to L?
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Re: Bleeding T-Bird/Taurus calipers
Thanks! I'll give that a shot.
- Mike McCreight
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Re: Bleeding T-Bird/Taurus calipers
Remove the 2 bolts holding the caliper to the adapter. Do both sides. Rotate the caliper towards the front of the car, still centered on the rotor. They won't fall off.
Re-bleed the brakes. I "gravity bleed" first, typically, that's all that's required. Not always.
When you get a firm pedal, and no bubbles, rotate, bolt up and test drive.
As with all bleeds, DON'T push the pedal to the floor repeatedly, if at all. It pushes the piston/seals into uncharted territory, unless the MC is new. Short strokes are all that's required.
Let us know how it goes!
Re-bleed the brakes. I "gravity bleed" first, typically, that's all that's required. Not always.
When you get a firm pedal, and no bubbles, rotate, bolt up and test drive.
As with all bleeds, DON'T push the pedal to the floor repeatedly, if at all. It pushes the piston/seals into uncharted territory, unless the MC is new. Short strokes are all that's required.
Let us know how it goes!
It's not a hobby, it's an obsession!
Re: Bleeding T-Bird/Taurus calipers
Great info Mike, thanks.
Miguel.
89 XR4Ti Monique; Waking up a real "Night/Mare-Coor".
T5, NPR IC, PIMP ECU, Walbro 255, Dual piston BOV, Manual BC, 3" exhaust, One piece Aluminum drive-shaft, mc2 LSD, Boport 1.5 cam, Ported and polish head, big valves, 80# injectors, Bob's log, (soon HY35).
89 XR4Ti Monique; Waking up a real "Night/Mare-Coor".
T5, NPR IC, PIMP ECU, Walbro 255, Dual piston BOV, Manual BC, 3" exhaust, One piece Aluminum drive-shaft, mc2 LSD, Boport 1.5 cam, Ported and polish head, big valves, 80# injectors, Bob's log, (soon HY35).
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Re: Bleeding T-Bird/Taurus calipers
Anyone else have this problem or know the cure?
I am having the same problem.
88' TC calipers in back, no ball in the "proportion valve" and barley any pressure on the rear rotors.
I am having the same problem.
88' TC calipers in back, no ball in the "proportion valve" and barley any pressure on the rear rotors.
Re: Bleeding T-Bird/Taurus calipers
Did you do what was suggested and still have the issue?Sandmerchant wrote:Anyone else have this problem or know the cure?
I am having the same problem.
88' TC calipers in back, no ball in the "proportion valve" and barley any pressure on the rear rotors.
Re: Bleeding T-Bird/Taurus calipers
The T-Bird/Taurus calipers have the bleeders below the inlet when mounted. This requires them to be dismounted and rotated to ensure all the air is bled.
Also, they use a 45mm piston, which is about 9% larger than the Sierra/Scorpio rear (43mm).
Also, they use a 45mm piston, which is about 9% larger than the Sierra/Scorpio rear (43mm).
Tim Spencer
1988 XR4Ti Duratec project car
2011 Taurus SHO daily driver...not stock.
1988 XR4Ti Duratec project car
2011 Taurus SHO daily driver...not stock.
Re: Bleeding T-Bird/Taurus calipers
I have the T-bird rear caliper setup. 1. The calipers do get to be reversed from the t-bird I believe this will enable the parking brake cable to work as well as position the brake line connection high.
2. The brake lines then connect to the caliper via a "Banjo bolt" with a bleeder fitting - this is the bleeder used to bleed the system.
Best mod I've done for my xr!
2. The brake lines then connect to the caliper via a "Banjo bolt" with a bleeder fitting - this is the bleeder used to bleed the system.
Best mod I've done for my xr!
Jim Gosses
86 XR4TI, 165K, T-5, IC, RR, PBR Fronts, T-bird Rear Discs
86 XR4TI, 165K, T-5, IC, RR, PBR Fronts, T-bird Rear Discs
Re: Bleeding T-Bird/Taurus calipers
Could you post photos? Sounds interesting...JimG wrote:I have the T-bird rear caliper setup. 1. The calipers do get to be reversed from the t-bird I believe this will enable the parking brake cable to work as well as position the brake line connection high.
2. The brake lines then connect to the caliper via a "Banjo bolt" with a bleeder fitting - this is the bleeder used to bleed the system.
Best mod I've done for my xr!
Re: Bleeding T-Bird/Taurus calipers
I was able to convert the file, here it is
- Attachments
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- Rear caliper install
- reardiscs.jpg (77.06 KiB) Viewed 8142 times
Jim Gosses
86 XR4TI, 165K, T-5, IC, RR, PBR Fronts, T-bird Rear Discs
86 XR4TI, 165K, T-5, IC, RR, PBR Fronts, T-bird Rear Discs
Re: Bleeding T-Bird/Taurus calipers
I saw thise a while back. Apparently they are popular for use on motorcycles.
Those definitely make sense with the varga caliper in our application.
Those definitely make sense with the varga caliper in our application.
Jeremy Kemp
RIP: the Mutt….1988 XR4Ti Chestnut Brown/Spice Leather
MC2 Coilovers and Bushings, Contour Rims and Rotors, Ported Motorsport Head, Cosworth 4x4 Intercooler, Holset HY35 Turbo, 80LB Injectors, Megasquirt2 EFI
RIP: the Mutt….1988 XR4Ti Chestnut Brown/Spice Leather
MC2 Coilovers and Bushings, Contour Rims and Rotors, Ported Motorsport Head, Cosworth 4x4 Intercooler, Holset HY35 Turbo, 80LB Injectors, Megasquirt2 EFI
Re: Bleeding T-Bird/Taurus calipers
Where did you find that particular banjo bolt bleeder?
I've looked but couldn't find any in the correct thread.
Thanks!
I've looked but couldn't find any in the correct thread.
Thanks!
Re: Bleeding T-Bird/Taurus calipers
I just installed them on my car and we just bleed them from the banjo bolt.
Put a bunch of paper towels around it when you crack them open, they make a mess.
Put a bunch of paper towels around it when you crack them open, they make a mess.
Re: Bleeding T-Bird/Taurus calipers
You can find them at Pegasus - https://www.pegasusautoracing.com/group ... BANJOBLEED
Jim Gosses
86 XR4TI, 165K, T-5, IC, RR, PBR Fronts, T-bird Rear Discs
86 XR4TI, 165K, T-5, IC, RR, PBR Fronts, T-bird Rear Discs