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1275 Gt Brakes


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#16 Spider

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Posted 31 August 2019 - 11:40 AM

 

 

 

Spider, I am interested to see what you can confirm if you can check the old fiche.
As I would like to configure them as per factory as a starting point.
Thanks

 
OK sure, just give me about a week, I've a bit on my plate just at the moment !
 
Just had some time to sort through it almost !
 
From Car S20D101 to 19415A  Single Circuit, 7.5" Servo Assisted Discs, 5/8" Rear Wheel Cylinders, WL600041 Regulating Valve
 
From Car 19416A to 21569A  Single Circuit, 8.4" Discs (no servo), 11/16" Rear Wheel Cylinders, WL600041 Regulating Valve
 
From Car 21570A to ?????  Single Circuit, 8.4" Discs (no servo), 1/2" Rear Wheel Cylinders, No Regulating Valve


Hi Moke
I've found a flow chart on Minispares website that has conflicting info with regard to the car from 21570A to ? They state a Single circuit, 8.4 discs (no servo) 1/2Rear cylinders , with a 21a1774 regulating valve. I have a single line no servo 1975 1275gt 24935a and wish to know are you or Minispares right as I want to put the correct set up on my car.

 

 

Well,,,,I'm a bit of a fuddy-duddy where it comes to this kinda info.

 

Mine comes off the Factory Fiche, so as close as you'll get to a build sheet.

 

I'll try and put up a screen shot in the next day or so.



#17 Indigo

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Posted 31 August 2019 - 12:19 PM

Thanks for the info.

As I have the larger wheel cylinders, I will run with the regulating valve to avoid the rear wheel lock up.



#18 Spider

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Posted 31 August 2019 - 07:31 PM

It also makes technical sense (based on experience) to run with a valve of one type or another.

 

I know for a fact, with the 8.4" Discs and 5/8" Rear Wheel Cylinders, without a Valve, the Rears will lock. Going to bigger cylinders will make them lock even easier.

 

Carbon has said the same in this thread.

 

The WL600041 Valve has a shut off pressure of 340 PSI.



#19 Spider

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Posted 31 August 2019 - 09:53 PM

From Leyland Fiche AKM1145FD, published November 1979

 

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