[Healeys] Brakes -rear wheel cylinders

Bluehealey bluehealey at gmail.com
Wed Mar 27 16:28:04 MDT 2019


Yes. My typo should have read 1-7/8”. I always thought the Type 14 and 16 designations were 16ths over the 1” base. Hence 1+14/16 and 1+16/16ths.

I am happy to be corrected with your metric dimensions but believe Girling were still imperial in the 60’s.
Best regards

Alan - from my iPad

> On 27 Mar 2019, at 18:32, Peter Caldwell <peter at nosimport.com> wrote:
> 
> Alan,  I must disagree with this a little. As pertains to the front Calipers..... the Type 14 pistons are 48mm   the Type 16 pistons are 54mm
> 
>     Peter C
> 
>> On 3/25/2019 1:29 PM, Bluehealey wrote:
>> The 100-6 had drum brakes.
>> The BT7 was fitted with discs and Type 14 calipers (7/8” dia. pistons) paired with 3/4” rear cylinders.  That is the way to go.
>> BJ8 used Type 16 calipers and also 3/4” rear cylinders. That is also good but gives slightly longer pedal travel. BMC compensated by increasing the Master cylinder size and adding a servo. Not strictly necessary but gave good results with lower pedal effort.
>> You pays your money and take your choices.
>> If you stay with 1” rear cylinders the rears will lock under hard braking and potentially cause you switch ends.  Not recommended.
>> AlanB
>> Bluehealey.com
>> 
>> 
>>> On 25 Mar 2019, at 14:02, Mike MacLean <rrengineer.mike at att.net> wrote:
>>> 
>>> So, I guess since I am putting 100-6 disc brakes on the front of my BN2 I won't have to do anything since both front and rear cylinders are 1" dia.?
>>> Mike MacLean
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