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      01-21-2019, 11:25 AM   #155
wyatth
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Bumping this up .. does anybody have the bias calcs for these F8x brakes?
And does it seem like the front calipers could fit with a custom bracket instead of the spindles?
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      01-21-2019, 05:27 PM   #156
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Quote:
Originally Posted by wyatth View Post
Bumping this up .. does anybody have the bias calcs for these F8x brakes?
And does it seem like the front calipers could fit with a custom bracket instead of the spindles?
I am running the full set on my M3. Went with new steering knuckles instead of trying to make a bracket. Definitely can feel a difference over the stock brakes. Much firmer pedal feel.
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      01-21-2019, 06:38 PM   #157
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Very nice. Yeah might splurge on the spindles/knuckles if I can find lightly used calipers for a good price. Was hoping simple brackets could be made for less than the knuckles. Did you experience a slight increase in front ride height?

The rotors are obviously better than ours, calipers canít be worse and should give better feel. With pads/lines/fluid, this should be a solid setup for all but the track junkeys, and a pretty 4 wheel setup for the price of an ST40 front. ST40 probably better for the track, but also has more expensive replacement rotors.

Last edited by wyatth; 01-21-2019 at 11:38 PM..
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      01-22-2019, 11:06 AM   #158
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Quote:
Originally Posted by wyatth View Post
Very nice. Yeah might splurge on the spindles/knuckles if I can find lightly used calipers for a good price. Was hoping simple brackets could be made for less than the knuckles. Did you experience a slight increase in front ride height?

The rotors are obviously better than ours, calipers canít be worse and should give better feel. With pads/lines/fluid, this should be a solid setup for all but the track junkeys, and a pretty 4 wheel setup for the price of an ST40 front. ST40 probably better for the track, but also has more expensive replacement rotors.
Slight increase in ride height but didnt mind as I scrape everywhere.
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      02-23-2019, 05:56 PM   #159
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Quote:
Originally Posted by wyatth View Post
Bumping this up .. does anybody have the bias calcs for these F8x brakes?
+1
No luck finding on F80post so far ...
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      02-23-2019, 06:01 PM   #160
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Quote:
Originally Posted by wyatth View Post
+1
No luck finding on F80post so far ...
Not really an issue since theyíre coming off a vehicle with nearly identical dynamics and weight distribution.
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      02-23-2019, 06:05 PM   #161
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But different master cylinders and electronic controls, no?
Iím sure theyíre close and will be fine, but data is still helpful to confirm.
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      02-23-2019, 06:07 PM   #162
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Quote:
Originally Posted by wyatth View Post
But different master cylinders and electronic controls, no?
Iím sure theyíre close and will be fine, but data is still helpful to confirm.
Thatís true about the master cylinder actually. Iíll try to look into it.
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      03-18-2019, 04:10 PM   #163
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please, anyone can check or say me offset of original rotor of m2/3/4?
i need "D" Measure (image is just example)
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      05-23-2019, 06:45 AM   #164
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Quote:
Originally Posted by KevM3UK View Post
Hi , just joined so i can post this, i fitted these to my car back in August

Ok then, bought these back in August , a full set of F8* M3/M4 brakes , consisting of 370mm rear discs with 2 pot calipers ,380mm front discs with 4 pot calipers and also the front spindle/hub assembie's too, you need those for the front calipers as the pitch betwwen mounting lugs is smaller on the M4 as opposed to the E92 M3, I was assured from theseller that they would just bolt on so after many messages back and forth I took the plunge and bought them, I dont think anyone has done a detailed write up about fitting this brake set up so here goes

the full set along with spindles




so with the car on axle stands for a few days I stripped my front hubs/spindles off to compare to the M4 set.

back to back measuring to compare the centreline ,angle and height of how the damper will sit , its exactly the same










carefull measurements of the centrelines and angles of the balljoint holes, if this is different then its game over ! indeed they are exactly the same







Now this is the one where its slightly different, note the four holes for the wheel bearing , they sit around 4-5 mm lower on the M4 spindle, making the length from the strut top mount to the wheel centre 4-5mm longer, this will raise the car's ride height ever so slightly, we'll see later on!



also the E92 wheel bearing fits exactly to the m4 spindle, i tried it off the car first then bolted the disc on and caliper, its plug and play with no altering of the track ,the wheels sit exactly the same and i still use my 10mm spacer with no ill affect.

old spindles and front arms removed for cleaning and painting


removing bushes ready for powerflex items



painted








spindles cleaned up ready for painting, can you see where this is leading to?





coat of 2k primer





painted silver




bushes fitted







arch liners cleaned up




back on and bolted up, I marked the damper with a line around the top of the old spindle , its the same with the M4 spindle



caliper on and bled






Rears now, I measures the thickness of the discs from the mating face to the inner surface, i can comfirm they're the measuremnt on both sets of discs, the rears are plug and play with the handbrake shoes lining up perfect too!




the only thing thats required for the caliper fitment is these spacer washers between caliper and hub to centralise the caliper on the disc






caliper bolted on and bled



use also use the E92 brake hoses as theyre a direct fit










Also fitted these, a set of competition pack springs

this is how it sits with the comp pack springs and m4 brakes






I'd say its a little high in the front ,maybe due to that measurement I talked about earlier, making the centre of the wheel to the strut top 4-5mm longer due to the wheel bearing mounting holes, it was on eibachs for a bit and looked good with them fitted but the comp springs handle far superior!

bought some used Intrax springs , have to say they handle really well but a very hard ride, this is how it looks with those fitted, I think the drop is a bit low, even with the M4 spindles!



















so to conclude , Im happy with the M4 brake set up, a nice solid feel with no exceess pedal travel the some BBk's can give, only thing is im looking for the holy grail of springs to give me that perfect stance with comp pack ride/handling , dont say eibachs as ive had those, KW has set maybe on the cards!
would i reccommend the M4 set up ? Yes! allthough I may paint the calipers Austin yellow one day!


Need front spacers of 10mm for new brakes in m359 wheels?
and maybe is possible adapt also brake booster of m4?
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      05-23-2019, 12:24 PM   #165
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Quote:
Originally Posted by ruben_17non View Post
Need front spacers of 10mm for new brakes in m359 wheels?
and maybe is possible adapt also brake booster of m4?
Shouldnt need any spacers for 359 wheels. I have seem the 359's on a M4 before without spacers and no issues.
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      05-23-2019, 03:22 PM   #166
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Quote:
Originally Posted by ruben_17non View Post
Quote:
Originally Posted by KevM3UK View Post
Hi , just joined so i can post this, i fitted these to my car back in August

Ok then, bought these back in August , a full set of F8* M3/M4 brakes , consisting of 370mm rear discs with 2 pot calipers ,380mm front discs with 4 pot calipers and also the front spindle/hub assembie's too, you need those for the front calipers as the pitch betwwen mounting lugs is smaller on the M4 as opposed to the E92 M3, I was assured from theseller that they would just bolt on so after many messages back and forth I took the plunge and bought them, I dont think anyone has done a detailed write up about fitting this brake set up so here goes

the full set along with spindles




so with the car on axle stands for a few days I stripped my front hubs/spindles off to compare to the M4 set.

back to back measuring to compare the centreline ,angle and height of how the damper will sit , its exactly the same










carefull measurements of the centrelines and angles of the balljoint holes, if this is different then its game over ! indeed they are exactly the same







Now this is the one where its slightly different, note the four holes for the wheel bearing , they sit around 4-5 mm lower on the M4 spindle, making the length from the strut top mount to the wheel centre 4-5mm longer, this will raise the car's ride height ever so slightly, we'll see later on!



also the E92 wheel bearing fits exactly to the m4 spindle, i tried it off the car first then bolted the disc on and caliper, its plug and play with no altering of the track ,the wheels sit exactly the same and i still use my 10mm spacer with no ill affect.

old spindles and front arms removed for cleaning and painting


removing bushes ready for powerflex items



painted








spindles cleaned up ready for painting, can you see where this is leading to?





coat of 2k primer





painted silver




bushes fitted







arch liners cleaned up




back on and bolted up, I marked the damper with a line around the top of the old spindle , its the same with the M4 spindle



caliper on and bled






Rears now, I measures the thickness of the discs from the mating face to the inner surface, i can comfirm they're the measuremnt on both sets of discs, the rears are plug and play with the handbrake shoes lining up perfect too!




the only thing thats required for the caliper fitment is these spacer washers between caliper and hub to centralise the caliper on the disc






caliper bolted on and bled



use also use the E92 brake hoses as theyre a direct fit










Also fitted these, a set of competition pack springs

this is how it sits with the comp pack springs and m4 brakes






I'd say its a little high in the front ,maybe due to that measurement I talked about earlier, making the centre of the wheel to the strut top 4-5mm longer due to the wheel bearing mounting holes, it was on eibachs for a bit and looked good with them fitted but the comp springs handle far superior!

bought some used Intrax springs , have to say they handle really well but a very hard ride, this is how it looks with those fitted, I think the drop is a bit low, even with the M4 spindles!



















so to conclude , Im happy with the M4 brake set up, a nice solid feel with no exceess pedal travel the some BBk's can give, only thing is im looking for the holy grail of springs to give me that perfect stance with comp pack ride/handling , dont say eibachs as ive had those, KW has set maybe on the cards!
would i reccommend the M4 set up ? Yes! allthough I may paint the calipers Austin yellow one day!


Need front spacers of 10mm for new brakes in m359 wheels?
and maybe is possible adapt also brake booster of m4?
Hi,

you want to fit 380mm rotors with M4 Calipers???

i have a set of rotors+calipers& brake pads in perfect condition if you need it PM me. BR.
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      05-23-2019, 03:23 PM   #167
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Quote:
Originally Posted by ruben_17non View Post
please, anyone can check or say me offset of original rotor of m2/3/4?
i need "D" Measure (image is just example)
[IMG]https://burkhart-engineering.com/Web..._2_282_445.jpg[/IMG]
D is around 63mm.
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      05-23-2019, 06:18 PM   #168
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We should quote KevM3UK's post again on this page.
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