S3 Brake Master Cylinder

[ultraslow]

I have an '85 Caterham S3, solid axle, 4 spd, 1600 Xflow Kent. I wonder, does anyone have any information regarding where the brake master cylinders for this model came from? I have found dual circuit cylinders( front discs split lines, rear drums single line ) that look similar on eBay UK; They were from '70-early 80's MGB/MGBGT and TR7/TR8s. Mine is currently at White Post and they are lost at sea and seem to be having altogether too much trouble finding replacement seals. Any help gratefully received.

ultraslow

[rx7locost]

I do not guarantee this info. Check for yourself:

 

Girling master cylinder 74066147

 

Sold as TRW and Lucas too, same number

 

Lucas 74066147 has 11/16" dia seals (a.k.a. 0.7" dia)

 

Lucas 74066147 is used on a Morgan +8 ('79-'86)

 

Morgan +8 ('79-'86) uses Lucas SP7657 seal kit

 

If you search for "Lucas SP7657" you will find it is also used on '76-'80 Triumph Spitfires.

 

 

All of this comes from the internet so it must be true. Use at your own risk!

[jlumba81]

One of these might work too.

[ultraslow]

Thanks for the input. The Lucas unit looks v-promising.

I will keep you posted. Ultraslow

[Jackal]

The PN's escape me at the moment, but Willwood also makes a Girling replacement. They seem to be the most readily available.