mazie
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| posted on 13/11/11 at 11:43 AM |
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Master cylinder bore size
One of this winters mods is to remove the servo and master cylinder as I Don't get any feel to the braking, the master cylinder on there will be
a too larger bore so my question is what to replace it with. The pedal can accept a bias bar so a dual system is a possible option.
So what bore size is recommended?
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Mark Allanson
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| posted on 13/11/11 at 11:58 AM |
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What have you got now? I just removed the servo from the Sierra system and drove on! 22mm bore with M16 front and Capri drums at the rear.
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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mazie
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| posted on 13/11/11 at 01:32 PM |
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Not sure what is on there as I haven't taken it all off yet. Would of thought the master cylinder from a servo assisted car would be the wrong
bore size and so the ratio will be out. If not then happy days !
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Mark Allanson
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| posted on 13/11/11 at 01:41 PM |
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You have to remember that my car weight way less than half of the donor Sierra
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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britishtrident
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| posted on 13/11/11 at 07:25 PM |
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A lot depends on the pedal leverage ratio on a lot of modern cars the ratio is near 10:1 and they have a powerful servo.
Before servos became universal it was more or less standard practice to use a 0.75" (19mm) bore master cylinder on cars with front disc brakes,
when a servo was fitted the bore size went up to 7/8" (22mm), Allowing for the much reduced weight & lower leverage ratio which more
or less cancel each other out a 0.75" bore tandem cylinder should be ideal.
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