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Suspension & Braking Forum by BimmerWorld
Have some questions about suspension or brake setups for your E46 BMW? Get all your answers here!
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Old 07-23-2012, 05:33 AM   #1
330Hero
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Plumming a hydraulic handbrake into an BMW E46?

Has anyone done this?

I've had mine mounted now but the garage installing it is not sure how/where to plum it into the brake lines?

Apparently on the E46 the rear calipers run on separate lines. And the front and rear brakes for each side are connected.

If anyone has done this or knows the correct way to connect the hydro that would be very helpful
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Old 07-23-2012, 05:45 AM   #2
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The reason for this setup from the factory is called redundancy.

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Old 07-23-2012, 06:11 AM   #3
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What's the purpose of it? Handbrake not good enough? Plan on drifting? I actually thought of it, but didn't get into much detail as you would somehow have to find a way for the new system to interact with ABS, existing lines, fluid flow, etc.
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Old 07-23-2012, 06:15 AM   #4
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Yep its a full drift/track car build and the OEM handbrake is terrible

Right now the theory is we can split the flow and tap into both the rear lines at the calipers but it would be trial and error and I don't want to trash my brake system totally or end up spending loads trying to get it working. Kinda need the experience of someone who has already done this really
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Old 07-23-2012, 06:46 AM   #5
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You could PM this member http://forum.e46fanatics.com/showpos...&postcount=118
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Old 07-23-2012, 07:27 AM   #6
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Hey just heading out too work now, ill post once i get home hero. Also got your PM. ttys
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Old 07-23-2012, 07:29 AM   #7
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But do check out the drift thread I started in the motorsports section for good info on drifting and whatnot!
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Old 07-23-2012, 03:54 PM   #8
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This diagram shows the fitting sizes for a Ksport Hydro for out car, I ended up going with an ASD 16" PullBack. Will post pics once i get my car back from the body shop and its installed.Were making a custom bracket on the side of the trans tunnel and angling it towards the driver seat. Should come out nice!
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Old 07-24-2012, 03:42 AM   #9
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Thanks for that ACP, I'll pass it on to my garage and see if it makes any sense to them! They've just made up a custom bracket to mount my hydro too, in fact its all in the car we're just not sure how to wire it up!
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Old 07-24-2012, 05:03 AM   #10
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The guys are going to have a go installing it today, apparently the diagram looks good although the input/output of the lines on my hydro cylinder are 1mm, the bimmer lines are 10mm. not sure how this is going to affect braking..
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Old 07-24-2012, 06:31 AM   #11
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Nice, what hydro setup did you go with? And don't worry about the fittings being smaller it will effect absolutely nothing with your braking. Post pics once its done!!
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Old 07-24-2012, 06:35 AM   #12
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Oh awesome, thats good to know

I got one of these: http://www.ebay.co.uk/itm/1407732170...84.m1497.l2649

Hopefully it should do the job, with so little info available on modding E46s for skidding its a shot in the dark, but its reversible so I have it mounted vertically now right next to the steering wheel and the guys at my local shop have done a great job making the bracket so its solid!

I'll get some pics and a build thread up when its done

So far I've got BC racing coilovers, welded diff, polybushes all round and sub-frame reinforcements and I've done one drift day - was really good but having the hydro should add that extra bit of adjustability and another initiation option obviously :L)
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Old 07-24-2012, 06:37 AM   #13
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Very nice, excited too see the results! This is the ASD i went with, shoulda been installed by now , but my cars still at the body shop ( got rear ended) but should have it in by next week!




And post some vids/pics of you drifting one of these days in the drift thread!
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Old 07-24-2012, 06:41 AM   #14
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Oh man that handle looks pretty serious! nice wallpaper on the macbook too

Here's a couple from my first day:





The car:



Will get a proper thread up soon Thanks again for the help, I should be getting mine back in a couple of days too so will let you know how they get on.

Are you disabling ABS/DSC btw or just leaving it alone?
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Old 07-24-2012, 06:57 AM   #15
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Ask this guy.
http://forum.e46fanatics.com/showthr...910&highlight=
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Old 07-24-2012, 07:29 AM   #16
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Run a second hydraulic caliper on each rear wheel and dedicated lines from the hand brake master cylinder.

http://www.wilwood.com/
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Old 07-24-2012, 07:44 AM   #17
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Thanks Breyton - if the diagram acp posted earlier doesn't work then I will get in touch with that guy.

dfl - thanks, I did consider this and think it will be "plan b" if I can't get the hydro plumbed into the existing calipers correctly.
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Old 09-24-2014, 10:00 PM   #18
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what boss kit do you guys use for e46 steering wheels?? i cant find any in australia to suit my 46 drift car
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