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Author Subject: How to remove ABS
cwspellowe

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Post #1
Hi all, had a search but couldn't find a definite guide. I'm looking to remove the ABS for one reason or another and just want to get it absolutely right before I go getting lines made up.

Cheap option -

female - female connectors joining the in and out lines of the ABS pump. Any reason why that wouldn't work?

Slightly more costly option -

New lines all round. Two lines out of the MC, each being split front to rear with a t-piece, running through the compensator on the rear beam. Again if i'm doing this, should be able to use the existing rear lines as they were replaced about 3 months ago, right? And just join them down the back of the gearbox?

Ooh ooh ooh and.. the threads are 10x1 right? Any larger/smaller ones dotted about?

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Posted 4th Aug 2011 at 17:28
owain

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Post #2
Frickin hell Pellowe, stop living my life! I just came here to post up exactly THIS QUESTION.

As far as I know, everything's M10x1.0, but there are a few M12's connecting the rear beam. No idea why, and I'd plan on doing away with them.

My plan was:

1 - Copper line from one MC outlet, to a t-piece. One line goes each side, through the bulkhead with a grommet then to a male connector for the braided lines.

2 - Copper line from second MC outlet to bulkhead connector. Other side of bulkhead (inside car), run copper line to gear lever, install bias valve. Continue line to rear of car, another bulkhead connector through floor.

Below the panel, copper from bulkhead connector to t-piece, copper either way to male connectors for braided lines.

I seem to remember there being something about using the same material throughout, ie you shouldn't use brass connectors going into the cast iron brakes or something? Due to electrical differences causing corrosion?

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Posted 4th Aug 2011 at 18:18
owain

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Post #3
Also, I'm sure someone posted up a company who was pretty cheap for brake parts, so far CBS seem cheapest but I can't remember if that was them.

I've PM'd Swampy but weirdly he hasn't replied to a brake pipes message within 30 seconds, so I can only assume he's dead or something.

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Posted 4th Aug 2011 at 18:19
cwspellowe

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Post #4
Erm? yeah, electrical something or other...

Not needing a bias valve as the car's not being tracked, keeping the compensator at the rear.

So are you plannning just one line to the rear with one bias valve? I'd have thought it'd be safer, although more effort, to have each MC outlet split front/rear, so one outlet feeds one front brake and one rear brake?

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Posted 4th Aug 2011 at 18:19
cwspellowe

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Post #5
owain wrote:
Also, I'm sure someone posted up a company who was pretty cheap for brake parts, so far CBS seem cheapest but I can't remember if that was them.

I've PM'd Swampy but weirdly he hasn't replied to a brake pipes message within 30 seconds, so I can only assume he's dead or something.


Mention shiny bolts and he'll reply immediately Wink

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Posted 4th Aug 2011 at 18:20
owain

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Post #6
Is there a one-way valve in the MC outlets do you know? I.e. if you did what you'd suggested would that help? Or would a leak in the system just drop the pressure throughout anyway?

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Posted 4th Aug 2011 at 18:22
cwspellowe

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Post #7
Dunno, that's why i'm asking the questions Laugh my ass off

Doubt there's a one way valve after the MC though or the brakes would stay on

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Posted 4th Aug 2011 at 18:23
owain

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Post #8
Oh, and:

lotek wrote:
Just take the abs out


cwspellowe wrote:
I would if it was a track car but given the fact my insurance went up just by changing colour I don't think they'd like me removing the abs!


...seconds pass...

cwspellowe wrote:
I'm looking to remove the ABS

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Posted 4th Aug 2011 at 18:24
cwspellowe

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Post #9
Yes i've decided it has to go as my airbox won't fit with it there Laugh

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Posted 4th Aug 2011 at 18:24
owain

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Post #10
cwspellowe wrote:
Doubt there's a one way valve after the MC though or the brakes would stay on


Fair point, I don't really know how master cylinders work with pressures and vacuums and such. Hopefully soon someone other than the two people who are here because they don't know might answer.

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Posted 4th Aug 2011 at 18:25
owain

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Post #11
Oh, and have you happened to look where the ABS loom goes or how you'd remove it? Or were you just planning on disconnecting it and leaving it knocking about?

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Posted 4th Aug 2011 at 18:26
cwspellowe

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Post #12
Choppy chop chop? Dunno

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Posted 4th Aug 2011 at 18:27
owain

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Post #13
That's pretty much what I was thinking, bulb out + snips = WIN.

+ insulation tape if I'm feeling posh.

Double win bonus for me, when your brake fluid is £30 a litre anything that reduces the volume of fluid required is a Brucey.

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Posted 4th Aug 2011 at 18:29
cwspellowe

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Post #14
Pfft, just use water Wink

If an MOT guy sees ABS sensors though will he not wonder why there's no ABS to test? Or is it a case of "It only has to be working if it's present" ?

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Posted 4th Aug 2011 at 18:30
owain

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Post #15
cwspellowe wrote:
If an MOT guy sees ABS sensors though will he not wonder why there's no ABS to test? Or is it a case of "It only has to be working if it's present" ?


I asked my local MOT place and their answer was "we open the bonnet, and if you have an ABS pump then it must be working".

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Posted 4th Aug 2011 at 18:32
owain

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Post #16
According to my plans, I reckon you'd need:

1x Wilwood bias valve
2x T-Piece
2x Bulkhead connectors (4 if not using grommets in wings)

I already have pots of 10mm male and female connectors so didn't bother looking for those.

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Posted 4th Aug 2011 at 18:35
dangti6

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Post #17
Get one of them 172 Cup upgrades and they already come without ABS.

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  • Posted 4th Aug 2011 at 18:42
    welshpug!

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    Post #18
    abs loom is self contained, just unplugs, dont think youd need to cut a single wire.

    the yellow coloured fittings are zinc passivated steel, you wont find much brass

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    Posted 4th Aug 2011 at 18:43
    owain

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    Post #19
    welshpug! wrote:
    abs loom is self contained, just unplugs, dont think youd need to cut a single wire.


    Win Thumbs up

    welshpug! wrote:
    The yellow coloured fittings are zinc passivated steel, you wont find much brass


    That rings a bell, think that's what I already have. Oddly can only find brass fitting for T-pieces etc.

    Chris I have totally hijacked all over your thread.

    EDIT: Would it be a problem mating the brass and zinc-steel connectors?

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    Posted 4th Aug 2011 at 18:46
    owain

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    Post #20
    I did not learn much from this thread. Just gonna throw that one out there.

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    Posted 5th Aug 2011 at 13:51
    cwspellowe

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    Post #21
    Me neither, so i'm just going to hope for the best. Not like they're a necessary safety feature or anything Smile

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    Posted 5th Aug 2011 at 17:20
    prism7guy

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    Post #22
    I removed the ABS on my track car.
    With regards to the question about doing one outlet to one front and the opposite rear it would be a PITA as you would need 2 bias valves, and then to set them to both be the same so there isnt loads of imbalance between the sides, if that makes sense, would also involve using more brake lines etc.

    This is pretty much how i have mine setup:


    I used brass T pieces, copper-nickel solid lines, swampy braided lines with stainless ends where possible except the two front flexi lines to the calipers, which are goodridge ones given to me.
    I can't remember what material the unions are which i used for connecting my copper nickel lines to everything else, i bought them from Vehicle Wiring Products, i think they may be brass but i really can't remember.

    All the joints in my setup were 10x1mm.

    Hope this may have helped a little.

    Just another note, i ran my solid line under the car and used swampy's braided lines to come into the car for the bias valve and back down again. I can't imagine that having a relatively delicate copper line inside the car with the risk of knocking/damaging it is a good idea. Smile

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    Posted 5th Aug 2011 at 21:51
    owain

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    Post #23
    That does indeed help, ta Yes

    Any idea what the functional difference is between pure copper and copper/nickel pipe?

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    Posted 5th Aug 2011 at 22:03
    cwspellowe

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    Post #24
    copper/nickel is easier to form iirc and supposed to last longer. Kunifer rings a bell?

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    Posted 6th Aug 2011 at 00:21
    prism7guy

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    Post #25
    I tried making a line from pure copper and it seemed much softer and easier to flare and bend. The lifespan isnt so great though.

    Copper-Nickel seemed much harder and was reluctant to flare easily, i think it also lasts much longer and is the better option at the slight extra expense. I think it is also much more corrosion resistant than pure copper too.

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    Posted 6th Aug 2011 at 03:24

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