2.8 caliper mount
- Thread starter Chamber66
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- Z3 Individual Dakar / Orinoco Individual
Just before i go hunting for a carrier to measure this why do you need the measurements.
All z3 1.9 - 3.0 and e36 and e46 have the same bolts hole spacing irrespective of the disc size ( carriers are different sizes to match disc but mounting holes the ssme )
Stephen.
All z3 1.9 - 3.0 and e36 and e46 have the same bolts hole spacing irrespective of the disc size ( carriers are different sizes to match disc but mounting holes the ssme )
Stephen.
That's interesting. Does that mean I could potentially easily change front 3.0l calipers and discs for, say, 2.8l items? I was under the impression that the 'free litre' has larger diameter discs and calipers.
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You just need the correct bits .
My 1.9 dakar had solid disc standard now has 2.8 brakes changed carriers caliper and disc job done.
@Scooblitz has i think its 300mm disc off of something i fitted them but cant remember what the carriers are off of when he see's this he will know .
Stephen .
My 1.9 dakar had solid disc standard now has 2.8 brakes changed carriers caliper and disc job done.
@Scooblitz has i think its 300mm disc off of something i fitted them but cant remember what the carriers are off of when he see's this he will know .
Stephen .
- Joined
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- Z3 Individual Dakar / Orinoco Individual
@Chamber66 i will have a look for you if no one beats me to it .
Stephen.
Stephen.
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Having had a look at this they will need measurements taken with vernier calipers as you are going to need an exact measurement as even slightly out might not fit.
Stephen
Stephen
Yes - the 3.0 has 300/22 discs as opposed to 286/22.
The calipers are the same as the 2.0 2.2 and 2.8 but the 3.0 carriers are different.
Unlike the E46 330i and 330d, the 3.0 Z3 can use 16 inch wheels.
the 2.8 amd 3 litre cars use the same calipers, those of the 3 litre being spaced further out to suit the larger discs.
@Stevo7682 Is referring to the 300mm front brake mod he fit for me. It only needs 300mm discs for an early e46 328i and z4 2.5i sport models and the 505 cast marked carriers. Using the same calipers and pads it's bolt on.
14mm more diameter and a very slight increase in brake 'performance' and minimal increase in forward brake bias with standard rear 2.8i brakes.
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122mm CtoC if I remember, I can check on Saturday.
You’ll find both 121.7 and 122.5mm quoted on the web if you search long enough. Both those figures are converted from Imperial (I think).
Why though? Alloy bells will give a better unsprung weight reduction than Wilwood calipers.
300mm discs is dead easy, as above, max with BMW parts is 325mm, afik anyway, big increase in swept area, again bolt on and cheap, but needs 17’s.
- Joined
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325s definitely fit, and have yet to cause any problem, after several years. Probably no real improvement, mainly because I don't drive like a d*ckhead.
Sure fill up the 18s nicely.
Sure fill up the 18s nicely.
To throw a spanner in the works...
If you really want a 'big brake kit', there is a way to install the modern BMW m sport 340mm front Brembo kit. Used prices are low and could be cheaper than a Wilwood kit to assemble.
The Brembo calipers bolt straight to the knuckle where the carriers would usually be. Custom hoses.
The disc needs a little work. A Vauxhall insignia vxr 337mm disc can be cnc drilled to bmw mounting spec that has the correct dimensions to bolt on to the hub. Expect to change rotor dust guards too as they don't accommodate the larger discs.
Rears can be modified in various ways but there are variables to consider with most of that being which hub assembly is used and if it has matching number of splines to the original z3 axles.
A tuppence worth.
If you really want a 'big brake kit', there is a way to install the modern BMW m sport 340mm front Brembo kit. Used prices are low and could be cheaper than a Wilwood kit to assemble.
The Brembo calipers bolt straight to the knuckle where the carriers would usually be. Custom hoses.
The disc needs a little work. A Vauxhall insignia vxr 337mm disc can be cnc drilled to bmw mounting spec that has the correct dimensions to bolt on to the hub. Expect to change rotor dust guards too as they don't accommodate the larger discs.
Rears can be modified in various ways but there are variables to consider with most of that being which hub assembly is used and if it has matching number of splines to the original z3 axles.
A tuppence worth.
I have the calipers already and 17"wheels,so will be rude not to. Probably go to 300mm discs nothing bigger. Having the bracket size will give me a little bit of a head start.
Could you check the hole diameter also?
The bolts are the same size (12mm, I think) regardless of calliper. Same size/thread as a wheel bolt.
Tony.
Tony.
As Tony said, 12mm bolts.
Def 122mm CtoC on the bracket, there is a very slight clearance on the hub, which I expect is where the other sizes come from.
“I have the calipers already”
As good a reason as any
I have several 300mm Wilwood rotors, depending on how this year goes, I plan on alloy bells next winter.
Iain
Def 122mm CtoC on the bracket, there is a very slight clearance on the hub, which I expect is where the other sizes come from.
“I have the calipers already”
As good a reason as any
I have several 300mm Wilwood rotors, depending on how this year goes, I plan on alloy bells next winter.
Iain
It’s more that I have health problems than anything else, can’t take on yet another project when I haven’t finished the 50 or so I’m doing. 
Do the designing off the car, it’s much easier, just get a hub from one of the breakers, cheap, no use to anyone. Fit them in an afternoon then.
Don’t watch the YouTube videos, some on them are downright dangerous, welding to cast uprights etc.
Wilwood themselves do quite a good guide on how to make a bracket.
Simplest way is to plan it from the caliper to the upright, not the other way around. If you use ali, inserts are a good way to go if anyone other than you works on the car.
Do the designing off the car, it’s much easier, just get a hub from one of the breakers, cheap, no use to anyone. Fit them in an afternoon then.
Don’t watch the YouTube videos, some on them are downright dangerous, welding to cast uprights etc.
Wilwood themselves do quite a good guide on how to make a bracket.
Simplest way is to plan it from the caliper to the upright, not the other way around. If you use ali, inserts are a good way to go if anyone other than you works on the car.
Thanks for the guidance ,I've made some before but for bikes not cars. I'm not really a car guy but I have to say bikes are so much easier lolIt’s more that I have health problems than anything else, can’t take on yet another project when I haven’t finished the 50 or so I’m doing.
Do the designing off the car, it’s much easier, just get a hub from one of the breakers, cheap, no use to anyone. Fit them in an afternoon then.
Don’t watch the YouTube videos, some on them are downright dangerous, welding to cast uprights etc.
Wilwood themselves do quite a good guide on how to make a bracket.
Simplest way is to plan it from the caliper to the upright, not the other way around. If you use ali, inserts are a good way to go if anyone other than you works on the car.