[Healeys] Master cylinder bore

[Stephen Hutchings]

Hi Fred,

I got into these sizes last year because I took my servo out (long story)…my notes say that the 7/8” bore is with servo.
You can get good quality replacement masters from Pegasus racing- they say they are genuine Girling.

Good luck,

Stephen, BJ8

> On Jun 2, 2020, at 2:33 PM, Fred Wescoe <fredwescoe at gmail.com> wrote:
> 
> Listers,
> 
> I took the car out for a nice long drive this morning (100+ miles round trip).  About 15 miles from home, on the way back, the brake pedal slowly went to the floor.  A quick pump and the brakes stopped the car without a problem. 
> 
> So now I need to repair/replace the master cylinder.  What size cylinder bore do I have?   The car is a 1964 BJ8, MK III with the brake booster.  The chassis number is 29009.  Do I have a 78" or a 3/4" bore.  My manual does not indicate the bore size.
> 
> Should I repair or replace it?  I am inclined to repair if there are quality parts available.  It seems that a quality master cylinder replacement  is not readily available. 
> 
> Thanks for some sound advice,
> 
> Fred Wescoe
> 
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