Hi,

can anyone confirm if there is a physical difference in bore size etc between a master cylinder for a rear drum braked sierra and one from a rear disk braked sierra?

I thought i would ask on here before resorting to my local ford employed trained chimp...............


who believe it or not did not know that there were lobro and non lobro driveshafts/diffs..............anything older than a 51 plate Mondeo and he was stumped!

Trained chimp! That would be good.

Sorry I can't help on your question though

quote:

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Originally posted by locoboy
Hi,

can anyone confirm if there is a physical difference in bore size etc between a master cylinder for a rear drum braked sierra and one from a rear disk braked sierra?

I thought i would ask on here before resorting to my local ford employed trained chimp...............


who believe it or not did not know that there were lobro and non lobro driveshafts/diffs..............anything older than a 51 plate Mondeo and he was stumped!

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I don't know about the specific m/cyl' on the Sierra.

However, general practice is to make the stroke in the primary and secondary chambers different for a drumbrake rear to a disc brake rear.

Discs all round is usually a 50:50 stroke split.

Disc front, drum rear is 66:34 stroke split.

Basically the wheel cylinder in a drumbrake 'consumes' far less fluid than a caliper.