61 replies to this topic

[Kieran McC]

I have driven my mates Eliese that has no servo or ABS , It has a bias valve fitted works well you can adjust the brakes alot. The best results he got is running different front pads from the rear . I am not sure what make he uses but seems to work well.

[FLD]

£150..... fcuk me!
http://www.rallydesi...p?cPath=562_596
Job done

Good shout Stu!

Which one, the £45 one...?

Does anybody know which of the cylinder connections is for the front?

Careful with the wilwood stuff, its not the greatest IMO.

[slindborg]

With regard to those bias valves, none are really much cop Imho.

[chris_uk]

can i ask why you are doing all of this? is there much point?

[JimmyJamJerusalem]

can i ask why you are doing all of this?

is there much point?

Because race car. You should understand Chris

Anyway, it's too late to turn back now

[JimmyJamJerusalem]

So ok to finish up I just need to identify which way round to connect the master cylinder....

To find this out I just need to identify the ports of the abs controller. MC1 and MC2 were connected to the cylinder so if I find out which is front and which is back I'm good to go!

Any ideas?

Here's the hose for the rears

[chris_uk]

well i kinda do understand tbh, but you know what im like, if it aint broke dont fix lol i like the idea of controlling the braking bias front to rear also how much weight do you think you will save after the conversion?

[JimmyJamJerusalem]

Not a lot of weight to be saved tbh but every little helps!! Also it's a redundant componant and it has to go! I'm just fettling Chris tbh, just debating whether to ditch the servo and fit the new plunger. Master cylinder connection closest to the rad is front and closest to cabin rear....

[ChrisS1]

Cant help but Fair play to you for taking it on Jimmy

[JohnTurbo]

Bias valve? Was pretty sure there was no such thing in the circuit 'out of the box'.

[Bargi]

Bias valve? Was pretty sure there was no such thing in the circuit 'out of the box'.

Not that you can control, but there's one in the ABS unit that kicks in when it thinks your going to lock up the rear end

[Rally]

With regard to those bias valves, none are really much cop Imho.

Jimmy, if you're going to do it, do it right and put a bias box in.

[JimmyJamJerusalem]

With regard to those bias valves, none are really much cop Imho.

:yeahthat:/>

Jimmy, if you're going to do it, do it right and put a bias box in. :P/>

Hey Mike I know nothing about braking systems, I'm learning as I go you got any links to anything appropriate?

[Arno]

So ok to finish up I just need to identify which way round to connect the master cylinder....

Are you replacing the MC too?

The original one will be dimensioned for use with a brake booster. You probably will need to fit one with a slightly smaller bore to get a longer (un-assisted) pedal travel and better brake force on the calipers.

With the normal VX220 MC you probably end up with a rock-hard pedal which tou have to stand on to get any real retardation from the car. Not nice

Not sure if it can be made to dit, but the MC from the Rover Elises (S1 or S2) is dimensioned for un-assisted use.

Of course the pivot points on the pedals may be somewhat different too, so you may end up with a little different pedal feel than on the Elise, but at least it should be doable.

Bye, Arno.

[JimmyJamJerusalem]

So ok to finish up I just need to identify which way round to connect the master cylinder....

Are you replacing the MC too?

The original one will be dimensioned for use with a brake booster. You probably will need to fit one with a slightly smaller bore to get a longer (un-assisted) pedal travel and better brake force on the calipers.

With the normal VX220 MC you probably end up with a rock-hard pedal which tou have to stand on to get any real retardation from the car. Not nice :(/>

Not sure if it can be made to dit, but the MC from the Rover Elises (S1 or S2) is dimensioned for un-assisted use.

Of course the pivot points on the pedals may be somewhat different too, so you may end up with a little different pedal feel than on the Elise, but at least it should be doable.

Bye, Arno.

When you say brake booster do you mean the servo or the abs unit...?

I've removed the abs unit but the servo remains currently.

If I remove the servo I also have a new plunger to fit the original master cylinder.

[Zoobeef]

He means the servo

[Arno]

Oops.. Sorry.. Yeah, I meant the servo. Thought you were ripping that out with the ABS controller as well. Bye, Arno.

[Firthy]

Bias valve? Was pretty sure there was no such thing in the circuit 'out of the box'.

Not that you can control, but there's one in the ABS unit that kicks in when it thinks your going to lock up the rear end

In a purely selfish way its a shame your fitting the 4 pots at the same time Jim

I am really interested to see and hear how you get on without the ABS, like Bargi I'm sure that its still doing something even when its not connected....

I have never got anyway near locking the rears in the damp but have locked the fronts regularly, and when you jump on the pedal hard it does feel as though its not giving you everything...

I might be wrong though It is strange that with the same hardware other than a different ABS unit the 4 channels stop so much better though!

[Firthy]

It would be interesting to ask techie how his brakes feel if he disconnects the ABS unit with the 4 channel setup? He knows exactly what we are talking about, so it would be interesting to hear if he feels any difference to the 2 channel setup. Firthy

[TheRealVXed]

The abs in the VXR is miles better than the NA. It's still off though I am tempted to have a bash at this after you Jim. Does it keep the ABS light on, or would some lovely person be willing to make a cheater?