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Just finished painting my disks black baked them in the oven. Why didn't you paint yours CJJ ?

mg_xpower;10464 wrote: Just finished painting my disks black baked them in the oven. Why didn't you paint yours CJJ ?

I decided I like the authentic rusty look.

The results are in.

Went back to Kwikfit Ashington today and they tested the rear brakes post mod. Now bear in mind that they haven't had much breaking in, maybe 60 miles, but the results are pretty good.

Before the modification, with the standard 240mm brakes



After the modification, with the Focus ST170 280mm discs fitted



That is an increase of stopping power of around 60kgf with no other modification.

So the conversion gets :thumbsup: from me.

Over the next week I will try and fit the new EBC discs to the front and Greenstuff pads all round, bleed the brake system and get them retested next saturday.

CJJ;10422 wrote: As for your question about the fit of the disc on the hub, you can see the circle left on the hub from the old disc. So it doesn't fit snuggly.

Strangely enough, I put the centres of the old and new dic together and there wasn't much in it.

You can just see the new disc below the old.

Interesting. That means that if you can get a bigger disc with the correct PCD, then the centre bore isn't critical. OR, is the disc also located on the outside of the flange?
Will you check this on the fronts when you change them? I seem to remember that the centre bore was tight when I changed them, but I thought that about the rears as well:dunno: So what do I know!

The outside of the flange is a lot bigger on the new discs, so I don't think that makes much difference.

CJJ;10469 wrote: The outside of the flange is a lot bigger on the new discs, so I don't think that makes much difference.

I meant was the old disc located that way?:dunno: When you look at the inside of the flange drum of the old disc you can see shiny metal.

CJJ;10466 wrote: The results are in.

Went back to Kwikfit Ashington today and they tested the rear brakes post mod. Now bear in mind that they haven't had much breaking in, maybe 60 miles, but the results are pretty good.

Before the modification, with the standard 240mm brakes

After the modification, with the Focus ST170 280mm discs fitted

That is an increase of stopping power of around 60kgf with no other modification.

So the conversion gets :thumbsup: from me.

Over the next week I will try and fit the new EBC discs to the front and Greenstuff pads all round, bleed the brake system and get them retested next saturday.

Excellent. Looks like a worthwhile modification:yesnod:

:shake: i was really really hoping it didn't make any difference :frown:

now i really want them, apart from just looking better they actually improve the braking............ them rear discs all of a sudden are looking very worn :whistle:

so thats another thing on the list, thanks Clive

David Aiketgate;10472 wrote: I meant was the old disc located that way?:dunno: When you look at the inside of the flange drum of the old disc you can see shiny metal.

I think it is a close fit, but I don't think it is essential to the working of it.

David Aiketgate;10473 wrote: Excellent. Looks like a worthwhile modification:yesnod:

The brakes seem a lot better, especially on an emergency stop. God know what it will be like with the new pads and front discs. I think it will be face against the winscreen time.

David Aiketgate;10473 wrote: Excellent. Looks like a worthwhile modification:yesnod:

Agreed :yesnod: Can I go get my two sets made up now :whistle: :lol:

phil-hex;10474 wrote: so thats another thing on the list, thanks Clive

Anything I can do to make you spend more money mate.

Remember that I have the safety blanket of ABS. While I have no reason to think that there may be a brake imballance caused by this, my ABS would take over if the rears locked.

However, I have been braking VERY hard, in the wet, and the backend never broke free. This was a few 70 - 0 emergency stops. The ABS never came in either. I had to physically try to get the ABS to come on, just to make sure there weren't any problems. I also have 205 and 225 Toyos front and rear which will give a bigger contact area on the road.

While I am not trying to put you off, in fact quite the opposite, I am just saying you should fit and test it yourself before relying on it in an emergency.

Here is some reading if anyone is interested.

http://www.mgf.ultimatemg.com/group2/brakes/big_rear_brakes/index.htm

http://www.mgf.ultimatemg.com/group2/brakes/big_brakes/Big_Brakes.htm

CJJ;10481 wrote: Anything I can do to make you spend more money mate.

Remember that I have the safety blanket of ABS. While I have no reason to think that there may be a brake imballance caused by this, my ABS would take over if the rears locked.

However, I have been braking VERY hard, in the wet, and the backend never broke free. This was a few 70 - 0 emergency stops. The ABS never came in either. I had to physically try to get the ABS to come on, just to make sure there weren't any problems. I also have 205 and 225 Toyos front and rear which will give a bigger contact area on the road.

While I am not trying to put you off, in fact quite the opposite, I am just saying you should fit and test it yourself before relying on it in an emergency.

Here is some reading if anyone is interested.

http://www.mgf.ultimatemg.com/group2/brakes/big_rear_brakes/index.htm

http://www.mgf.ultimatemg.com/group2/brakes/big_brakes/Big_Brakes.htm

Very interesting read there.:yesnod:
That has answered one of my questions as well. The standard discs are located on the outside of the flange as well as the studs.