Help again - master cylinders this time!

Help again - master cylinders this time!

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Discussion

tvrolet

Original Poster:

4,278 posts

283 months

Wednesday 17th August 2005
quotequote all
OK, so I marked the master cylinders with permanent marker (clutch, and front and back brakes), then wrapped them in plastic bags and put them away in a box. Now I come to re-use them, the brake fluid has seeped out and my permanent marker ain’t permanent any more.

So – what cylinder is what? (Oh, and this off a floor mounted pedal box.)

I’ve got 2 identical ‘AP CP2623’ master cylinders, and a ‘Girling-70’ (or at least that’s what it looks like it says). I remember the brakes used a different master cylinder back and front, so one of the APs MUST be for the clutch.

What I have to work out is therefore what is the cylinder for the back brakes and what is the front. Visually, the Girling unit is narrower than the AP, so I’m speculating it has a smaller bore. My thinking goes a smaller bore means more pressure, so this must be the front circuit. However, this does assume the Girling master cylinder really is a smaller bore internally than the AP.

Anyone know if I’m guessing right, and the AP2623s are for clutch and back brake, and the Girling is for the fronts?

WB

Terminator

2,421 posts

285 months

Wednesday 17th August 2005
quotequote all
I suggest you give Thorpey a ring as he's (or rather one of his lackeys is) stripping mine down at the moment so must be doing a similar thing.

That, of course, is assuming that all Tuscan Racers are the same

dave porter

156 posts

271 months

Wednesday 17th August 2005
quotequote all
cylinders have different coloured bands on them to id front and rear ,smaller internal id to front, any probs call 07850 304332.

tvrolet

Original Poster:

4,278 posts

283 months

Wednesday 17th August 2005
quotequote all
dave porter said:
cylinders have different coloured bands on them to id front and rear ,smaller internal id to front, any probs call 07850 304332.

I did notice different colours (cable ties round the cylinders) - any idea what colour is what?

WB

transatlantic

1 posts

224 months

Friday 16th September 2005
quotequote all
Black = 5/8"
None = 16.8mm
Blue = ..70"
Green = .75"
Orange = 13/16"
Red = 7/8"
White = 15/16"
Yellow = 1.00"
The Girling one is 7/10"

Have a nice day!

>> Edited by transatlantic on Friday 16th September 17:12