leon51274
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| posted on 17/10/12 at 11:15 AM |
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Master cylinder (think i made a boo boo)
Good afternoon all
I think i may of made a bit of boo boo! I purchased a master cylinder from cbs thinking it would do the job, however what i didn't do was read
the iva manual prior to my purchase! It would appear that iva states the front and rear braking systems should be separate systems incase of failure,
however my master cylinder only has one outlet so I'm thinking that it may be for a balance bar assembly? This wouldn't be a problem as i
could just purchase a non-servo m/s, however as you can see by the attached image of my bulkhead, fitting a different m/s would be a no no as most
that i have seen have the fixing holes horizontal unlike mine which is vertical so i would never get it to fit because the steering column bearing
housing. The last thing i want to do is start re-jigging the bulk head so does anyone have any other suggestions?
Many thanks for any input received.
Regards
Leon
 
Description
 
Description
[Edited on 17/10/12 by leon51274]
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maccmike
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| posted on 17/10/12 at 11:28 AM |
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surely theres a twin port type with that mounting configuration?
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leon51274
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| posted on 17/10/12 at 11:34 AM |
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quote:
Originally posted by maccmike
surely theres a twin port type with that mounting configuration?
I was hoping so but I've searched all over the place and can't seem to find one!
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rodgling
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| posted on 17/10/12 at 11:55 AM |
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Hmm, I've got a master cylinder with vertical fixing holes available if that's any use? Needs a remote reservoir though.
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leon51274
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| posted on 17/10/12 at 11:56 AM |
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quote:
Originally posted by rodgling
Hmm, I've got a master cylinder with vertical fixing holes available if that's any use? Needs a remote reservoir though.
Hi defo interested, is it a twin port?
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rodgling
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| posted on 17/10/12 at 12:18 PM |
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It's this one, unused:
http://www.rallydesign.co.uk/product_info.php?cPath=562_582_583&products_id=4048
Also have a similar but faulty 0.625 one (I suspect leaky seals which could be replaced).
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leon51274
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| posted on 17/10/12 at 12:23 PM |
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quote:
Originally posted by rodgling
It's this one, unused:
http://www.rallydesign.co.uk/product_info.php?cPath=562_582_583&products_id=4048
Also have a similar but faulty 0.625 one (I suspect leaky seals which could be replaced).
Ah, thats a single outlet one similar to the one i already have! I would have the same problem with regards to the iva stating that front and rear
braking requires to be on a separate system! Bugger thanks for looking though
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rodgling
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| posted on 17/10/12 at 12:31 PM |
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No problem - presumably you could use two master cylinders with a non-adjustable balance bar, but I guess you would run out of space to mount them?
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leon51274
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| posted on 17/10/12 at 12:56 PM |
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quote:
Originally posted by rodgling
No problem - presumably you could use two master cylinders with a non-adjustable balance bar, but I guess you would run out of space to mount them?
Yes as you can by the pic of the bulkhead the master cylinder is tight up to the steering column bearing so i'm very limited to what i can do as
the bulkhead is fully welded in. Fair to say I've made a school boy error
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hughpinder
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| posted on 17/10/12 at 01:20 PM |
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Non power assisted VW polo master cylinder? - it is of course twice as long! It is a 0.69" bore. I think the threaded ports are metric, but you
should be able to look that up.
Here's one:
http://www.ebay.co.uk/itm/VOLKSWAGEN-POLO-DERBY-BRAKE-MASTER-CYLINDER-LM43311-NEW-/271080961401?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3f1d
af3579
Regards
Hugh
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leon51274
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| posted on 17/10/12 at 01:50 PM |
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quote:
Originally posted by hughpinder
Non power assisted VW polo master cylinder? - it is of course twice as long! It is a 0.69" bore. I think the threaded ports are metric, but you
should be able to look that up.
Here's one:
http://www.ebay.co.uk/itm/VOLKSWAGEN-POLO-DERBY-BRAKE-MASTER-CYLINDER-LM43311-NEW-/271080961401?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3f1d
af3579
Regards
Hugh
Good man, That looks just the ticket. The length shouldn't be an issue. Does it matter if its got metric threaded ports?
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hughpinder
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| posted on 17/10/12 at 02:02 PM |
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The port thread only matters if you already have the fittings to screw into them and they are not the same, in which case you may have to buy some new
threaded ends to suit. They are usually 3/8 UNF if imperial or M10*1 if metric obviously the threads must match whats in the holes! - (I just looked
at an old spreadsheet of bits I needed from the last time I went to the kit car show and it seems I was looking for m10*1). If the polo ones are no
good, I'd probably try to find a master cylinder from a 80s/90s small base model car like a ford fiesta or a Rover metro, (rather than a
Japanese/European model) as they are most likely to be imperial fittings and to not have power assisted brakes. you will have to find out what the
bore is though.
Regards
Hugh
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leon51274
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| posted on 17/10/12 at 02:08 PM |
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quote:
Originally posted by hughpinder
The port thread only matters if you already have the fittings to screw into them and they are not the same, in which case you may have to buy some new
threaded ends to suit. They are usually 3/8 UNF if imperial or M10*1 if metric obviously the threads must match whats in the holes! - (I just looked
at an old spreadsheet of bits I needed from the last time I went to the kit car show and it seems I was looking for m10*1). If the polo ones are no
good, I'd probably try to find a master cylinder from a 80s/90s small base model car like a ford fiesta or a Rover metro, (rather than a
Japanese/European model) as they are most likely to be imperial fittings and to not have power assisted brakes. you will have to find out what the
bore is though.
Regards
Hugh
Ok, well haven't bought any fittings as yet so that shouldn't be an issue but Just looking at the image of the polo one on ebay, the
outlets with the black bungs, would these be for the reservoir?
Cheers
Leon
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hughpinder
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| posted on 17/10/12 at 02:13 PM |
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Yup
And I think one of the cylinders has a spare port that you can use for a pressure switch to operate the brake lights - If you can pick up the cylinder
from a breakers you will probably only pay about a tenner including the switch and resevoir (if its an unbolt it yourself job)
Regards
Hugh
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leon51274
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| posted on 17/10/12 at 02:18 PM |
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quote:
Originally posted by hughpinder
Yup
And I think one of the cylinders has a spare port that you can use for a pressure switch to operate the brake lights - If you can pick up the cylinder
from a breakers you will probably only pay about a tenner including the switch and resevoir (if its an unbolt it yourself job)
Regards
Hugh
Bugger, I'm going to have the same issue then as the cylinder that I've already got, which would mean i wouldn't be able to fit it
onto my bulkhead as it will foul the bearing housing!
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britishtrident
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| posted on 17/10/12 at 02:22 PM |
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You should be using M10x1 metric fittings anyway, any car model introduced since about 1975 (with very few exceptions outside the USA ) will
be metric.
The Polo cylinder has extra ports which will need blocked off with M10x1 bleed nipples or you can use one for hydraulic brake light you
will also need to make up acustom push rod. Black bung fittings are for resevoir -- some Ford resevoirs fit but most Ford resevoirs are
angled.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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daviep
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| posted on 17/10/12 at 02:47 PM |
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How about
THIS ?
Are planning on remote reservoir?
Cheers
Davie
“A truly great library contains something in it to offend everyone.”
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whitestu
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| posted on 17/10/12 at 02:47 PM |
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The Westfield one looks like it will fit:
Westy website
Not cheap though, but there is on on Ebay for £0.99 with no bids at the mo:
Ebay
Stu
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maccmike
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| posted on 17/10/12 at 03:21 PM |
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I love the guys on here
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leon51274
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| posted on 17/10/12 at 03:30 PM |
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quote:
Originally posted by daviep
How about
THIS ?
Are planning on remote reservoir?
Cheers
Davie
I wasn't planning on having a remote reservoir but the cylinder i bought came with the option to have one so i suppose its possible to have one
providing i am able to fit one on a different cylinder?
Cheers
Leon
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leon51274
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| posted on 17/10/12 at 03:33 PM |
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quote:
Originally posted by whitestu
The Westfield one looks like it will fit:
Westy website
Not cheap though, but there is on on Ebay for £0.99 with no bids at the mo:
Ebay
Stu
This one looks like it may be the way forward. The one on ebay is listed as possibly not working, would there be a seal kit available for this?
I really do appreciate the help with this guys as i was just on the verge of doing my dry build prior to having the chassis powder coated so coming
across this stumbling block sort of kicked me in the nads a bit!
Cheers
Leon
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whitestu
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| posted on 17/10/12 at 03:53 PM |
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I would contact Westfield to ask if they supply a seal kit. Seems likely that one be available somewhere.
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leon51274
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| posted on 18/10/12 at 10:26 AM |
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Well i decided to bite the bullet and purchase a new one direct from westfield.
Thanks for all the responses and recommendations guys, much appreciated.
Regards
Leon
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