Any tips for turning down bake disc's?
Turbo Mini Forums

I'm trying to turn down a pair of discs from 8.4" to 7.9" for a fiesta conversion,

The are Fing hard!!

even with a carbide bit it dosent want to know, which is strange as I turned down a set of vents last year with no probs,

Maybe its because I bought cheap discs this time?

It's the Fiesta conversion. The discs just won't have it because they know it's crap. A BL designed part isn't supposed to be mated with som Blue Oval shit!

I turned the inside of a set of S discs earlier and they where not very hard, so I suspect its like Vegard implies :)

Norweigen humor eh, lol


Ok i'll try waving an S caliper at it and see if it goes soft.

I'd assume the cheap discs could be the prob, cheaper poorer quality material spec, made to be up to the job by surface hardening.

Thats what I was thinking Tom,

I was expecting a hard "skin" and then a soft inner. It seems more like its hard all the way through, maybe they have added silicon to make crap steel harder.

breasts?

Hahaha...
Penile extension?

http://health.ninemsn.com.au/article.aspx?id=2536

do it MF style, jack the car up, start engine, put it in 4th gear and take an angle grinder to it

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

I'm about to embark on this conversion myself. I've found some Mk3 Fez calipers in the scrappy down the road.

Where did you get the new discs from?

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

or you could jack the car up and take the wheels off, then put in fourth and floor the throttle while gently lower the front of the car down until the brake discs scrub against the tarmac. That would be effective I think:)

Axel,

got them from Minispares, the cheapest ones.

Also, Mk3 calipers are meant not to fit aparently, althogh I can't confirm that.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I had probs finding the carriers too,

i finally just got lucky one ebay.

something is not right here, carbide will cut almost anything metalic, hardened or not,
is the tool in at the correct centre height, ie, not too high, meaning it will just rub on the job,just below the cutting edge,

carl

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

TBH is it worth the effort to turn down 8.4" solid discs when you can by 7.9" solid discs for almost the same price?

Here's where I got mine:

http://www.mra-minis.co.uk/brakes.htm

Shame they don't do 7.9" vented discs as well.

Edited by Rob H on 12th Oct, 2007.

Carl,

I did try moving the tool down, and tried different tools etc, I will have another check on monday, also I have a different bit to try, but will need to mod it to fit the lathe. Yhe bit i have don't have a very big rake on them, so with say 2" bar there is clearance but with the 8.4" disc its pretty much gone.

Cheers for confirming the carbide bits should do the job though :)

Rob,

Hindsight is a wonderfull thing!

gaffertape an angle grinder to the tool post ?

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

What speed have you got the lathe running at? Id go to a fairly slow speed.

Back once again like a renegade master

Mk3 calipers wont fit, they are for vented disks and they are spaced out too far...

As for the brakes they work very well... shocked a GP the other day at how quick my car scrubbed the speed off... IMO the Mk2 caliper is a better design.

I run a supercharger and I don't care the TB is on the wrong side.
VEMS + 12 PSI + Liquid Intercooler = Small Bore FUN!

I used a banjo connection on the caliper but if you are using new re-con calipers we had to file the surface flat to get a seal as they drill further into the caliper to re-cut the hole when they re-con them.. My build can be found here with the how to vid.

http://www.miniaddicts.co.uk/forum/showthread.php?t=1193

I run a supercharger and I don't care the TB is on the wrong side.
VEMS + 12 PSI + Liquid Intercooler = Small Bore FUN!

Edited by Paul S on 13th Oct, 2007.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Rob,

made up my own hoses with banjo's

I have some spare bits, i'll work out a price and PM you if your interested.

these are mine.