a little teaser...

[mikem7709]

Cayman S has a curb weight of 1340 KGs, not sure about a regular Carrera but a C4 is only 1550 KGs and that had ~ 20 HP less.

My Brembo Monoblocks have a pad length of almost 9"s and sit on 355mm discs so I wouldn't say a GT3 calliper is too big providing pad compound is judged well.

I don't know whether a BMW 345mm disc is lighter than a Porsche 330mm one, yes the BMW is a floating design but the bell is still as heavy and obviously the disc is larger.

There's a company in the US offering the kit for E36/Z3 for a long time now, so pretty sure they could supply carriers to the E46/Z4 if you don't want to get involved with the liability mentioned earlier. Godspeed in Bridgend will also do the work (they've recently made some custom bells/carriers for a friend to move his Brembo kit from his M5 to his X5).



If I wanted to spend time at Cadwell or Anglesey I'd buy a bike or something a lot lighter.

 

[Cheburator]

Answers below in bold

Cayman S has a curb weight of 1340 KGs, not sure about a regular Carrera but a C4 is only 1550 KGs and that had ~ 20 HP less.

My Z4MC came at 1475kg on the scales with 30ltrs of fuel. Almost no options except Bluetooth and PDC

My Brembo Monoblocks have a pad length of almost 9"s and sit on 355mm discs so I wouldn't say a GT3 calliper is too big providing pad compound is judged well.

Trust me, it is. The OEM BMW disc set up has been tried with Big Reds,996TT,StopTech 40 and 996C2 calipers. All on Pagid RS29. The first two, the pads are simply too big for the disc. The StopTech caliper is too expensive for the same pad area as the 996C2

I don't know whether a BMW 345mm disc is lighter than a Porsche 330mm one, yes the BMW is a floating design but the bell is still as heavy and obviously the disc is larger.

The BMW disc is a lot lighter than the Porsche one since the hat is made of aluminium alloy and the Porsche one is cast iron. You are looking at 500gr difference per disc. The BMW disc is also thinner at 28mm vs. 32mm for the Porsche one. Lastly, the BMW disc swept area is smaller than the Porsche one.

There's a company in the US offering the kit for E36/Z3 for a long time now, so pretty sure they could supply carriers to the E46/Z4 if you don't want to get involved with the liability mentioned earlier. Godspeed in Bridgend will also do the work (they've recently made some custom bells/carriers for a friend to move his Brembo kit from his M5 to his X5).

I know I can get brackets made by a ton of companies out there. That was not the point of this exercise as they charge an arm and a leg for their services and usually want a minimum order of say 20 to make it even remotely viable for us. I am not into this to make money - my day job, touching wood, is keeping me well fed and entertained so far - but wanted to recoup some of the costs of the upgrade.

If I wanted to spend time at Cadwell or Anglesey I'd buy a bike or something a lot lighter.

Agree... I just wanted to highlight what was happening to me the minute I started doing UK track days in the Z4MC, following 7yrs lapping the Ring and nothing else in various cars...

 

[mikem7709]

The drawings are the important thing, with them I`d expect you could get any good machining shop to make them up for ~ £100 a pair.

The Z4M wheels have a lower offset than the CSL`s so you would probably get away with a 10mm spacer ? Wonder if an aftermarket wheel with a 35+ would squeeze over them ? I`d actually be quite interested in a set of 4 carriers if you do go ahead with it.

 

[Cheburator]

The drawings are the important thing, with them I`d expect you could get any good machining shop to make them up for ~ £100 a pair.

The Z4M wheels have a lower offset than the CSL`s so you would probably get away with a 10mm spacer ? Wonder if an aftermarket wheel with a 35+ would squeeze over them ? I`d actually be quite interested in a set of 4 carriers if you do go ahead with it.

Sadly they want more than £100 per pair of brackets, believe it or not! I have the CAD drawings

You need 15mm spacers to fit standard Z4MC/R wheels over the fronts, the rears will clear the Brembo caliper without the need for a spacer. I went with 15mm extra spacing all round for aesthetic purposes.

I will go ahead and offer the carriers, but wanted to mount the fronts first. Was meant to do it last night, but my 4mths old baby daughter took proceedings into her hands so to speak, so it will be tomorrow night...

 

[aml_al]

Any images of these yet?

 

[Cheburator]

Any images of these yet?

Made of the finest English Extra Mature Double Cheddar :lol:


Almost ready to mount. 15mm spacer and studs ready for the wheel



Sexy time...



Did Silverstone yesterday and I was very impressed with the brakes. Only had the fronts on at the moment as I am still waiting on a tiny part from Porsche. As I said before - they stop about the same as the OEM set-up, but you can modulate them so much more than before and they don't fade.

 

[toplad]

mmm, interesting

I haven't done any track days in the Z4M, but I find the ABS isn't set at the limit of braking and is to quick to cut in, suppose if its easier to modulate the brakes, it might help

 

[Andy]

never saw these final pics, they look great

 

[daz05]

Cool

 

[Cheburator]

never saw these final pics, they look great

I have even better pics, but need to get the POS Photobucket to work. Will try and link my Flickr account when I get home tonight...

 

[ga41]

Please do. Would love to see more.

 

[Beedub]

and me... in for pics!! love to see different and cost effect mods like this

 

[Aliv6]

Very cool! Good skills!

 

[aml_al]

http://www.pistonheads.com/sales/3079074.htm

These might interest those that like this mod.....

Would consider myself, but inspection2 has kinda emptied this months fun fund. :thumbsdown:

 

[Anchefonk]

Hi guys!

Im resurrecting this post to see if someone could give me a hint. Cheburator said that he had no problem fitting to the //M the 996 calipers using the OEM brake lines.

Before purchasing the calipers I ordered some brake lines for my OEM brakes. Some time after that I had the opportunity of purchasing some Boxter S calipers really cheap.

Well, here is my doubt. I need to order the brackets. But before doing so, I need to be positive about the fitment of the OEM brake lines, cause the seller of the brackets also supplies the custom brake lines.

From what I see in pictures, the custom ones differ from the OEM in the banjo, the make a 90º turn while OEM are straight.

Did anyone have issues fitting the OEM ones? Any clearance issues?

THX!


imag

imag

 

[stevo///m3]

this is a question I haven't understood.
nline2long:

 

[Beedub]

i think you need the banjo fitting but ill check my APs asap. its just alittle cold to be crawling underneath it at the mo!

 

[-Neil-]

Doesn't need to be a banjo fitting as I have a 90 degree fitting like those in your photo of the hel lines. Mine were custom made by Merlin motorsport at Castle Coombe to be one piece from the caliper to the hard line pipe.

Neil

 

[TomK]

From what I see in pictures, the custom ones differ from the OEM in the banjo, the make a 90º turn while OEM are straight.

This. You will need the HEL lines (or similar) to complete the mod, OEM will not work.

 

[Anchefonk]

i think you need the banjo fitting but ill check my APs asap. its just alittle cold to be crawling underneath it at the mo!

Doesn't need to be a banjo fitting as I have a 90 degree fitting like those in your photo of the hel lines. Mine were custom made by Merlin motorsport at Castle Coombe to be one piece from the caliper to the hard line pipe.

Neil

From what I see in pictures, the custom ones differ from the OEM in the banjo, the make a 90º turn while OEM are straight.

This. You will need the HEL lines (or similar) to complete the mod, OEM will not work.

Looks like I need the custom ones form HEL.

I will try to see if I can customize my Goodrige ones. if not, will purchase a new ones.

THX!