Massive Brakes!

Sun Mar 04, 2007 7:07 pm

I found the discs by looking at this site but you only get 40 goes at looking before they lock you out, so by the time i'd found the discs i'd run out of chances.
If someone else wants to try and let me know the piston sizes for the 330i E46 master cylinder and the front calipers it would be a big help. thanks
this is the site, you have to follow it through to the buy online and then shop now. Remember, only 40 tries.

http://www.brakesint.co.uk/technical.html

Sun Mar 04, 2007 8:33 pm

matt, it says the piston diameter on the caliper is 57.0mm...

and the master cylinder is....

...bloody thing wont tell me!! it just says "there is not a great demand for brake parts such as this within the first 2 years. This may be why the part is not listed"

what good is that!!

i'll have a look on TIS tomorrow at work and see if its on there

once we've got the diameter of the master cylinder, we can work on the leverage calculations to work out how much better the brakes will be

Sun Mar 04, 2007 9:38 pm

Cheers
If i can't use the master from the 46 i'll go for a 25mm from something else, i'm looking at the E34 at the minuet but i don't think it fits the servo

Mon Mar 05, 2007 2:42 pm

matt, i cant find the diameter of the master cylinder ANYWHERE!!

what would be wrong with using the E30 master cylinder?

Mon Mar 05, 2007 2:43 pm

by the way, the 330's use 325mm discs, the 325's use 300mm and the rest of the E46's use 286mm discs. i cant remember the dimensions of the pads

Mon Mar 05, 2007 2:54 pm

What is the distance between mounting holes on the hub carrier?
I may have a design for a bracket which will go straight on.
I have been supplying brake upgrades for Audis for the last two years. BTW
I've just got another E30 after a few years away and I am looking for some alloys 15" + so I can make a start with a decent brake upgrade. (hint)

Mon Mar 05, 2007 3:01 pm

mounting holes on what? E30 or E46? im sure i can find out

Mon Mar 05, 2007 3:10 pm

E30 the hub carrier (the lump that the bearing lives in)

Mon Mar 05, 2007 4:28 pm

Stu i was thinking of using the E32 calipers that are 60mm pistons, I think the 22mm master just won't cope with those calipers so i'm looking at the 25mm master

so by my calculations (more of a guess) it will change the bias from 70/30 to 66/33 but it should be ok because of the bigger discs at the front

The trouble is the calipers weigh 3kg more than the standard ones so if i can get the E46 calipers it would be a result, i'd probably have to use the 330i ones (25mm thick) to match the Audi discs.

According to that web site it says the pre-facelift E30 has a 20mm master and post facelift has the 22mm so anyone with a chome job could get a quick increase

E30318isbry, distance between the edge of the bolt hole or the centre of the bolt ?

Mon Mar 05, 2007 10:53 pm

Centre to centre please.
I just got 12months MOT

Mon Mar 05, 2007 11:37 pm

i'd prefer to go with the E46 jobbies matt, just ourely for the unsprung weight you would save

i have a whole big document on brake force/leverage calculations upstairs that i had to learn for my Technicians. When i get the size of the master cylinder for an E46, i'll do some calcs for the E30 master cyl/E46 calipers and then for the E46 MC/E46 calipers

that way, we'll no what we're really looking at.

as i also said, the diameter of the discs is 300mm for a 325i and for the 330i its 325. will you fit them under the wheels???

E30318isbry - why do you want to know the dimensions? so you know how big to make a bracket? do you have the dimensions yet?

Tue Mar 06, 2007 12:45 am

I made the brackets for these:

They are 18" wheels.
The guy with the S2, above, wanted stupid brakes so I made them fit. RS6 calipes and 365x34 floating discs.
I usually get Porsche monoblock calipers and make them fit anything.

Tue Mar 06, 2007 1:00 am

how much for? :winkeye:

Tue Mar 06, 2007 8:01 am

Depends which caliper I need to use on the E30. There are quite a few different monoblock Porsche calipers about. The two piece calipers suffer from corrosion and flex, so I don't have anything to do with them. "Big Red" calipers are all knackered now as the stainless plates have reacted with the alloy.

A "standard" Audi S2 big brake kit with Boxster 'S' calipers and a 323x30 one piece disc works out at Ã‚£600 with new lines etc.
I don't think we need to go that big with the E30 as it doesn't weigh 1600kgs.

Tue Mar 06, 2007 10:22 am

E30318isbry
Distance is 89mm centre to centre. Do you make the brackets yourself ?

Stu
i'm using the Audi 288x25 discs that should fit under the 15" bbs so i'd have to use the 330i calipers because all the other E46's have 22mm discs.
that or get grinding like i was planning to do with the E32 set

Tue Mar 06, 2007 12:36 pm

Martinaston wrote:E30318isbry
Distance is 89mm centre to centre. Do you make the brackets yourself ?

Yes.
I usually modify a certain OEM bracket for the VAG market.
It won't work on this application.

I'll get myself a spare bearing housing and start measuring.

Tue Mar 06, 2007 2:41 pm

so could you make up a bracket to fit E46 330i calipers to an E30 hub?

Tue Mar 06, 2007 2:58 pm

Yes - I'll need a hub, caliper and disc to make sure it fits.

What disc would you use?

Tue Mar 06, 2007 5:31 pm

I'm trying to use the Audi A4 1.8turbo discs, these have been bored out by 1mm to fit the hub.
He refused to drill the bolt holes though

Tue Mar 06, 2007 5:49 pm

E30318isbry wrote:
Martinaston wrote:E30318isbry
Distance is 89mm centre to centre. Do you make the brackets yourself ?
Yes.
I usually modify a certain OEM bracket for the VAG market.
It won't work on this application.
I'll get myself a spare bearing housing and start measuring.

A litttttttle bit off topic. What can your offer for a '93 100 s4 with the worst kind of brakes imaginable(UFO's)?

Tue Mar 06, 2007 10:03 pm

Jon_Bmw wrote:
E30318isbry wrote:
Martinaston wrote:E30318isbry
Distance is 89mm centre to centre. Do you make the brackets yourself ?
Yes.
I usually modify a certain OEM bracket for the VAG market.
It won't work on this application.
I'll get myself a spare bearing housing and start measuring.
A litttttttle bit off topic. What can your offer for a '93 100 s4 with the worst kind of brakes imaginable(UFO's)?

Oh god, not those inside-out drum/disc hybrids? They are wronger than a sickeningly wrong thing:

Tue Mar 06, 2007 10:16 pm

keri-WMS wrote:
Jon_Bmw wrote:
E30318isbry wrote: Yes.
I usually modify a certain OEM bracket for the VAG market.
It won't work on this application.
I'll get myself a spare bearing housing and start measuring.
A litttttttle bit off topic. What can your offer for a '93 100 s4 with the worst kind of brakes imaginable(UFO's)?
Oh god, not those inside-out drum/disc hybrids? They are wronger than a sickeningly wrong thing:

You got it

Tue Mar 06, 2007 10:33 pm

A prayer mat under the pedals?

Wed Mar 07, 2007 2:25 am

Do they work by some kind of magnetism ?
F**k me i had better brakes on my pushbike as a kid when i used to put my foot on the back tyre.

Wed Mar 07, 2007 8:18 am

E30318isbry wrote:Yes - I'll need a hub, caliper and disc to make sure it fits.
What disc would you use?

unsure yet, as to what discs i would use. i gotta try and get the calipers first!!

matt, if i were you, i would machine/drill 4 new holes for the brake disc/hib mounting and not 3, if its possible. then you can insure that all around the holes is strong solid metal and not just a hole into a hole, if you know what i mean

have you decided what calipers to use?

Wed Mar 07, 2007 8:48 am

Stu its not the bolts that stop the disk from rotating but the clamping force between the hub and the wheel, so you can drill the holes where ever you want (with in reason)

Andrew

Wed Mar 07, 2007 9:23 am

Martinaston wrote:I'm trying to use the Audi A4 1.8turbo discs, these have been bored out by 1mm to fit the hub.
He refused to drill the bolt holes though

Vauxhall Meriva 1.8 16v disc is almost identical to the A4 turbo but it is 4x100
280 diameter instead of 288
Hat height is 4mm less - closer to the back of the wheel
Little bit more material to come out of the centre bore as they are 60mm
Any good?

Wed Mar 07, 2007 12:47 pm

Its a possible cheaper option but these sit pretty much in the centre of the bearing.

Wed Mar 07, 2007 3:08 pm

Demlotcrew wrote:Stu its not the bolts that stop the disk from rotating but the clamping force between the hub and the wheel, so you can drill the holes where ever you want (with in reason)

Andrew

i wasnt thinking about rotation of the disc, but more from a strength/safety point of view. but if you say its ok, then i'll just take your word!!

im still not sure what discs i'd use for the 330i calipers

Wed Mar 07, 2007 5:13 pm

If you've got 17" wheels go for the Audi TT discs

Wed Mar 07, 2007 8:25 pm

This is where you should drill the holes in the TT disc.
The 300mm set up is TUV approved.

Wed Mar 07, 2007 9:14 pm

I think thats a bit of overkill drilling the extra five holes as well

Wed Mar 07, 2007 10:17 pm

Martinaston wrote:If you've got 17" wheels go for the Audi TT discs

The TT disks fit under my 16" hartges with no spacers.

Andrew

Wed Mar 07, 2007 10:52 pm

Andrew
Where did you get the caliper brackets from ?

Wed Mar 07, 2007 11:07 pm

ed325i wrote:This is where you should drill the holes in the TT disc.
The 300mm set up is TUV approved.

im assuming this is a TT disc? does it bolt striaght upto the E30 hub then, once the holes are drilled?

also, wahst TUV approved? and, what caliper is that being used?