Ideas For A Brake Set Up

[marksorrento205 80]

I was going to go down the route of fitting a bias pedal box on my car, but as its a road car, after speaking to members on here I have come to the conclusion that it might not be the best idea. I have std rear discs and std gti6 front brakes and a std 1.9 m/c on my 1.9 205. My metal brake lines are showing signs of age and need replacing and I wanted to uprate the rubber hoses for s/s braided. I knocked up a pedal box and bought some s/s braided hoses and fitting.

 

Time for the questions

 

One of my ideas is to run a single line to the rear via a bias valve or a single compinsator and split for either side and two lines for the front to either side.

 

To run a single line to the rear I would need to blank off one of the m/c outlets. I had to do this on a 1956 bettle that we did a massive rebuild on and converted the brakes from drums to discs and fitted porsche magnesium wheels to it. The blank came in the kit. Is there anywhere I can get an m10 blank from?

 

The next question. On the m/c its split 2 front outlets and 2 rears which if I understand it the front ones have a rear and front brake circuit as do the rear outlets in case of a failure or leak you still have a front and rear brake that are on either side i.e front left / rear right or front right / rear left.

 

So im guessing that the outlet from all 4 ports is the same on the m/c and will not matter which way its piped up although have one front from the rear outlet and one front from the front outlet of the m/c for safety.

 

Final question can you get a m/c thats shorter and bolts straight on with just 2 outlets for clearance purposes for the MI16 / gti6 engine? Im guessing not as I would expect people to be using these on the conversion

 

Sorry if it a bit of a waffle but just want to get it right first time and have a good safe optimum set up for the road.

 

Thanks in advance

[Tom Fenton 1,542]

A standard 1600 master cylinder has two front outlets and a single rear as you describe. Some have a plug fitted, others don't have the hole drilled and tapped.

 

On the subject of bias box, my mate and I fitted one to our track car about 4 years ago, we've had no problems with it whatsoever and the car has been pressed into daily service on a few occasions for various reasons between both of us, at one point I was doing 450 miles a week in it for about 2 months.

[marksorrento205 80]

Very interesting tom. I thought with out the servo its quite a bit of effort on the pedal thats not ideal for the road but I guess you will soon get used to it.

 

I must say im a no b and 4 posts down answers most of my questions. Sorry

[Tom Fenton 1,542]

You soon get used to it, pedal pressure really depends on the master cylinders, within reason you can make the effort at the pedal more or less by changing the bore of the cyls.

 

I must say it is funny letting a mate who hasn't driven it move it, let a guy who drives a brand new Corsa move it once, his face was a picture when he brushed the middle pedal and nothing happened!

 

We did change the cylinders around on ours at originally it was too hard. I personally like it because the harder you press the harder you stop.

[marksorrento205 80]

I like the idea of having a varied pedal. I hate the on off feel. Especially in a light 205 on wet greasy roads. Nice to have some control. What size m/c are you running? I have .625 for te front and a .750 for the rear. I had them for my kit car and never used them.

[jplautomotive 0]

I like the idea of having a varied pedal. I hate the on off feel. Especially in a light 205 on wet greasy roads. Nice to have some control. What size m/c are you running? I have .625 for te front and a .750 for the rear. I had them for my kit car and never used them.

 

surely you want the .750 on the front ?

[marksorrento205 80]

surely you want the .750 on the front ?

 

You had me doubting myself for a minuet then. As the blokes in the know explain below

 

Smaller cylinder = more force, swap them around!

 

 

Peugeot sport spec is 5/8ths front and rear for Gravel, and 5/8ths front 3/4 rear for tarmac, with 5/8ths handbrake MC

 

 

the .625 is the front brakes :DD:

Edited January 29, 2009 by marksorrento205

[mrswampy 0]

Certain 106 use a two port mc

the abs versions i believe

 

 

the company that supply me with high quality competion spec brake lines can supply a blanking plug

[marksorrento205 80]

I have just had a look at www.brakeparts.co.uk and the 106 ones all show a 4 port, just the abs ones seam to have a couple of blanking plugs in the picture. Cheers for the idea though. Who do you use who can get blanking plugs?

[Miles 331 1 Cars]

I;ve got stacks of the blanking plug's if you want one, No Competion spec one thou

Most 306 and 406's use a 2 port M/S thou the fitting's are normally M12

[mrswampy 0]

Its a company called exact

they supply a lot of brake and fuel lines to alot of teams

 

display at autosport international each year

 

all 306s ive worked on are four port

 

you need to find a 106 with abs

the non abs ones have four ports

[meggy6620 0]

Iv got a bias box on my rally car i use a .700 on the front and a .625 for the rear std beaks on th back and willwoods on the front but the willwoods use the same overall piston area as std 1900 gti calipers. The .700 is perfect for the front and same gose for the rear just put some realy hi grip pads in them. i use carbon loreanes on the fron a 1144 mintex rear and not cheep but they stop very well and if your pedeling on a bit the pressuer you apply to the pedal is around the same as in a std roads car with the servo on it any way.

hope that helps