I thought that when mounting my master cylinder I had to have it so the level in the reservoir was higher than the calipers in order to maintain a head of pressure, but on looking through some pictures I see that some have it just above the floor pan height, an MK chassis it was. Am I wrong then?

It won't matter if it is lower, Mine is.
There is a pic here.
http://www.locostbuilders.co.uk/photos.php?action=showphoto&photo=P1010080.JPG
Steve.

[Edited on 2/4/07 by stevec]

Sorted. Thought it might cause air traps if it were lower. Cheers

It is a commonly misunderstood thing. Gravity doesn't affect the braking system and it works solely on hydraulic pressure.

Yes but air naturally heads for the highest point in the system, it can escape through the master cylinder but it cannot escape elsewhere so gives grief when bleeding particularly if the high point ends up being the top of the diff on a solid axle!

Caber

That was my concern Caber.
Raz, are you calling me common then

I bled mine on my own in no time.
Piece of piss,
You have to believe,
Steve.

[Edited on 2/4/07 by stevec]

I will/am. A picture can't lie. Cheers steve

Having the reservoir mountedhigh has an advantage in that a very slight positive head helps keep the rubber seals expanded and pushed into good contact against the cylinder bores.