[Mgs] MGA and MGB clutch slave cylinders

Barney Gaylord barneymg at mgaguru.com
Tue Jul 9 12:49:42 MDT 2019

Okay, I may have to extract foot from mouth here.

All MGA brake bleed nipples are same part number for drum and disc 
brakes, 3/8-24-UNF thread and should be 7/16-inch wrench size.

The bleed nipple for clutch slave cylinder is a different part 
number, so may well be 7/16-20-UNF thread.  It is definitely the same 
clutch slave cylinder for MGB and MGA (not Twin Cam).


At 08:30 PM 7/8/2019, Barney Gaylord via Mgs wrote:
>No.  They both use the same clutch slave cylinder.  Threads are 3/8-24-UNF.

>At 05:02 PM 7/8/2019, dave via Mgs wrote:
>>Can anyone verify that
>>    * The threads for an MGA slave cylinder bleed valve are 7/16 x 20
>>    * The threads for an MGB slave cylinder bleed valve are 3/8 x 24
>>Thank you
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