corkyshot
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| posted on 18/2/14 at 01:15 AM |
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overhead pedals to floor mounted
hi I was wondering if any one has gone about swapping, in my case a ford sierra brake assembly over to a floor mounted pedal assembly... so the ford
pedal box is a single master cylinder and majority of floor mounted pedal boxes are bias brakes. so what would need to be done to the brake lines to
make it work. im not to hot on my braking knowledge  any help welcomed thanks in advance
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jwhatley
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| posted on 18/2/14 at 07:06 AM |
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Hi,
I have just competed this over the winter.
I have gone from a sierra master cylinder over to a top mounted pedal box. I cut out the bulkhead and re welded a new one in, then installed new
mountings for the pedal box.
I was going to go for a floor mounted, but you can get higher pedal ratios with a top mount pedal.
You should already have separate lines going to your front brakes so you can just replace the lines and connect them to one master cylinder, and it is
the same for the rear, there should be one line from the master cylinder to a t piece at the rear for both sides. You can just connect that to the
other master cylinder. It may be easier to replace the lines completely though. I have done this with braided hose and euroquip fittings,
shouldn't cost you more than £30-40 to do the whole lot.
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Not Anumber
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| posted on 18/2/14 at 12:00 PM |
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Very wise to convert pedals from overhead to floor. Overhead pedals can be hard to reach for many drivers and it can be difficult to find a harness
and seat position that supports the required driving posture.
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corkyshot
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| posted on 18/2/14 at 12:41 PM |
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for me im doing it as the sierra pedal box had a small fracture this created play on the clutch pedal so the plastic teeth eroded because of the
lateral movement. before the teeth eroded I welded some bracing to the pedal box but it wasn't enough to save the plastic quadrant. so it seems
fitting to get rid of the weakest link a drop a floor mounted in... by the way this is my every day car so if you have a rough time scale to fit this
in what would it likely be?
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jwhatley
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| posted on 18/2/14 at 12:55 PM |
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If your going to fit a floor mount then the only real issue is the bulkhead as it will not be cut to accept two or three master cylinders (depending
if you have a hyd clutch) and the original holes will not be correct, so cutting and re welding a new plate in is the best option.
Might take a day or two, depends on how confident you are with cutting and welding, and the access you need to do it. All that you need to do after
it's fitted is connect the hoses up and bleed the brakes. Then set up the bias correctly as you could be facing the wrong direction pretty
quickly if not!
I disagree that a top mount is harder to reach though. As the pedals fit closer to the floor, and are actually further forwards. Plus there are much
better pedal ratios available and the overall setup is easier to set up and adjust.
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corkyshot
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 posted on 18/2/14 at 01:32 PM |
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as for welding it my job so that's not an issue along with fitting the pedal box... with my rear brake they both go to a T junction which then
becomes a single line, I presume il have to separate this and send 2 individual lines to the second master cylinder for the rear brakes?
thanks for the comments so far guys your really helpful 
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jwhatley
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| posted on 18/2/14 at 03:37 PM |
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You will need seperate lines, one for the rear brakes from the rear cylinder to the t at the rear or the car. And two lines to the front from the
other master cylinder
I'll send you some photos of how I've done mine for comparrison
[Edited on 18/2/14 by jwhatley]
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paulf
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| posted on 18/2/14 at 06:51 PM |
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I have a floor mounted brake pedal with a single Sierra master cylinder, the clutch an throttle are top mounted as I found that I could gain some room
in the foot well using that arrangement.
Basically my brake pedal is a floor hinged pedal and the master cylinder is mounted to a reinforced section of the bulkhead,I then plumbed it in as
per standard sierra system, if I was going to do it again then i would use a smaller bore master cylinder to gain some pedal travel and reduce the
effort.
Paul
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jwhatley
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| posted on 18/2/14 at 06:53 PM |
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Fit a fiesta one rather than a sierra MC, they are smaller but the same fitment.
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kickinthenuts
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| posted on 21/2/14 at 06:14 PM |
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Hi jwhatley,
I was also hoping to go the top pedal route. I am interested as to what pedal set you have used as I have seen a few that I wasn't too sure
would fit. Also are you still using a cable clutch. Any help with this would be great.
Cheers
David
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jwhatley
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| posted on 21/2/14 at 10:33 PM |
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I'm using a tilton aluminum 600 series top mount: http://tiltonracing.com/product/600-series-firewall-mount-aluminum-pedal-assembly/
You can fit a willwood which is exactly the same. Went with the tilton because of the pedal adjustability and ratio adjustability.
I use a hydraulic clutch
[Edited on 21/2/14 by jwhatley]
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