|
|
SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS! |
Post Reply |
|
Thread Tools | Search this Thread |
01-24-2017, 11:41 AM | #23 |
#buildnotbought
12620
Rep 5,278
Posts |
Do you have pictures on how good it fits on the inside part of the disc (so closest to the hub) and on the outside of the disc, so basically how good the pads are aligned on the brake disc surface?
__________________
Z4 3.0i | ESS TS2+ supercharger | Quaife ATB LSD | Brembo/BMW performance BBK front/rear | Schrick FI cams | Schmiedmann headers+cats | Powerflex/strongflex PU bushings | Vibra-technics engine mounts | H&R anti rollbars | KW V3 coilovers/KW camber plates | Sachs race engineering clutch | tons of custom sh#t
|
Appreciate
0
|
01-24-2017, 11:56 AM | #24 |
Captain
536
Rep 929
Posts |
Don't have pics at the moment, but there is enough clearance on both sides to allow caliper movement from new and worn pads.
__________________
Andre - 2J into a Z4 Coupe!
|
Appreciate
0
|
01-24-2017, 12:12 PM | #25 |
#buildnotbought
12620
Rep 5,278
Posts |
I mean pictures of how well the pads fit the rotor. so how good it gets the inner and outer circle. That the rotor isnt too small or too big for the pads.
__________________
Z4 3.0i | ESS TS2+ supercharger | Quaife ATB LSD | Brembo/BMW performance BBK front/rear | Schrick FI cams | Schmiedmann headers+cats | Powerflex/strongflex PU bushings | Vibra-technics engine mounts | H&R anti rollbars | KW V3 coilovers/KW camber plates | Sachs race engineering clutch | tons of custom sh#t
|
Appreciate
0
|
01-24-2017, 09:09 PM | #26 | |
Lieutenant General
2387
Rep 12,635
Posts
Drives: Z4 M, X5, GX460
Join Date: Apr 2008
Location: CT
iTrader: (100)
Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
Quote:
|
|
Appreciate
0
|
02-08-2017, 05:24 PM | #27 |
Captain
536
Rep 929
Posts |
Alright, official weights are in:
Front OEM Caliper 3.0si (steel), w/pads 14.8 lbs Front OEM Rotor 325x25 17.2 lbs 335i Front Caliper (alum), w/pads 14 lbs Z4M Front Rotor 345x28 19 lbs Total Savings -2 lbs I added 1 lb on each front corner. I also saved 1.6lb per corner by going to ARC8 wheels, so this is almost a wash in weight, which keeps front unsprung weight in check.
__________________
Andre - 2J into a Z4 Coupe!
|
Appreciate
0
|
02-08-2017, 06:11 PM | #28 |
Captain
536
Rep 929
Posts |
Painting the calipers G2 paint Mustang GRAY
Rear painted stock calipers, new stoptech rotors (old ones were extremely thin and completely rusted!) Amount of gap between Z4M rotor and 335i caliper bracket. 335i pad covers rotor well on the inner radius A bit of overlap on the outer circumference, expected since the Z4M rotor is only 345mm diameter, while the 335i rotor is 348mm BEFORE (stock 3.0si front caliper/rotor) AFTER (Z4M rotor, 335i caliper)
__________________
Andre - 2J into a Z4 Coupe!
|
Appreciate
0
|
02-08-2017, 06:48 PM | #29 |
Lieutenant General
2445
Rep 11,667
Posts |
That worked out great!
__________________
'21 M2C Hockenheim Silver
'18 718 Cayman S Lava Orange (sold) '13 E92 M3 Santorini Blue (sold) '07 Z4 M Coupe Alpine White (sold) |
Appreciate
0
|
02-09-2017, 09:01 AM | #30 | |
Captain
717
Rep 912
Posts |
Quote:
But here's my question to the picture above. Would this amount of overlap not cause dragging of the pad eventually causing heat/friction problems or potentially the pieces of the pad flaking off? |
|
Appreciate
0
|
02-09-2017, 09:16 AM | #31 | |
#buildnotbought
12620
Rep 5,278
Posts |
Quote:
I think dragging wont be a problem (not on such a small surface, its a 2mm lip or so).
__________________
Z4 3.0i | ESS TS2+ supercharger | Quaife ATB LSD | Brembo/BMW performance BBK front/rear | Schrick FI cams | Schmiedmann headers+cats | Powerflex/strongflex PU bushings | Vibra-technics engine mounts | H&R anti rollbars | KW V3 coilovers/KW camber plates | Sachs race engineering clutch | tons of custom sh#t
|
|
Appreciate
0
|
06-26-2017, 08:40 AM | #32 |
Captain
536
Rep 929
Posts |
I have some updates on this setup, need some feedback as well.
Did a weekend PCA HPDE event in Pocono. Brakes for the most part performed very well, including the car (remember, I'm driving a 3.0si with the 2jZ swap pushing about 500whp). I was hitting 150-160 in the straights way to easily, and after a few sessions, started to get serious brake fade. Only now did I realize I was running Stoptech Street pads, ( 308 series), which from reading, are the lowest end pad! Mistake on my part. I'm going to work on cooling/ducting and going up to the next level of pad, which is the Sport pad. There are many to choose from, but going with experience from my brother who runs the same pads, was slowing down his 4000lb RS4 with no fade at all (same track, same event). Those of you with track experience in the Z4M, do you feel proper cooling and updated pads should eliminate my fade issues while keeping the OEM brake setup? Or, is there a point where I will have to go BBK since the OEM brakes can't make the cut? I'm also worried about my puny rear 294mmx19 rotors (vs the M's 328x20) not being up to snuff. I don't have any option to upgrade those unless I go full BBK it seems.
__________________
Andre - 2J into a Z4 Coupe!
|
Appreciate
0
|
06-27-2017, 08:35 PM | #33 | |
Lieutenant General
2387
Rep 12,635
Posts
Drives: Z4 M, X5, GX460
Join Date: Apr 2008
Location: CT
iTrader: (100)
Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
Quote:
|
|
Appreciate
0
|
11-07-2017, 01:51 PM | #34 | |
Lieutenant General
2387
Rep 12,635
Posts
Drives: Z4 M, X5, GX460
Join Date: Apr 2008
Location: CT
iTrader: (100)
Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
Quote:
|
|
Appreciate
0
|
11-09-2017, 01:17 PM | #35 |
Captain
717
Rep 912
Posts |
|
Appreciate
0
|
11-09-2017, 01:23 PM | #36 |
#buildnotbought
12620
Rep 5,278
Posts |
^afaik the ID of the rotor hat is the same (both 160mm, so the 'small' bmw parking brake.
But the depth of the rotor hat is afaik much deeper on a z4 (so the rotor has a different offset). Its because the z4 has a different bearing flange at the rear (and the z4 has thus a wider track at the rear)
__________________
Z4 3.0i | ESS TS2+ supercharger | Quaife ATB LSD | Brembo/BMW performance BBK front/rear | Schrick FI cams | Schmiedmann headers+cats | Powerflex/strongflex PU bushings | Vibra-technics engine mounts | H&R anti rollbars | KW V3 coilovers/KW camber plates | Sachs race engineering clutch | tons of custom sh#t
|
Appreciate
0
|
11-09-2017, 02:04 PM | #37 | |
Captain
249
Rep 758
Posts |
Quote:
__________________
Top Down 365
|
|
11-09-2017, 03:34 PM | #38 |
Captain
536
Rep 929
Posts |
I think a new update is due
Now running PFC08 pads all around with the same setup (335i front calipers/Z4M front rotors, stock 3.0si rear caliper/slotted rear rotor), and brake cooling ducts. No fade whatsoever from repeated high speed stops on subsequent HPDE events. Very strong braking and progressive brake pedal feel. I have all the braking I need, and can lock up the fronts if I really want to (actually, engage the ABS...). Some observations: On very tight braking corners (>90deg), sometimes feel the brake pedal drop a bit. Almost feels like the calipers slide over, but full braking still available. Also, I wish I had more stopping power with less brake effort. I have to really mash the pedal down hard to get full braking, which makes heal-toe more difficult. I'll assume going BBK is only going to net me minor improvements from here on, but I may still consider it just for that extra amount of consistency and pad selection. The next thing I need to resolve is better tire contact patch management - in other words, reduce rear-to-front body dip, which probably causes too much negative cmaber in front, thus less tire patch to slow me down. I also wonder about rear brake bias, may need to find a way to increase the rear a bit. DSC is disabled, no break modulation from any of the nannies.
__________________
Andre - 2J into a Z4 Coupe!
|
Appreciate
0
|
11-09-2017, 06:31 PM | #39 | |
#buildnotbought
12620
Rep 5,278
Posts |
Quote:
But those parts arent exactly cheap for a setup not sure to solve your problem to your liking (both are $350+)
__________________
Z4 3.0i | ESS TS2+ supercharger | Quaife ATB LSD | Brembo/BMW performance BBK front/rear | Schrick FI cams | Schmiedmann headers+cats | Powerflex/strongflex PU bushings | Vibra-technics engine mounts | H&R anti rollbars | KW V3 coilovers/KW camber plates | Sachs race engineering clutch | tons of custom sh#t
|
|
Appreciate
0
|
11-09-2017, 08:58 PM | #40 | |
Lieutenant General
2387
Rep 12,635
Posts
Drives: Z4 M, X5, GX460
Join Date: Apr 2008
Location: CT
iTrader: (100)
Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
Quote:
|
|
Appreciate
0
|
11-09-2017, 09:02 PM | #41 | |
Lieutenant General
2387
Rep 12,635
Posts
Drives: Z4 M, X5, GX460
Join Date: Apr 2008
Location: CT
iTrader: (100)
Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
Quote:
Re brake pedal dropping what condition are your wheel bearings in? Worn bearings could cause side to side reflection deflection that would move the piston. Btw you mention ZHP rotors being same size as the M3 and Z4M but I think you meant ZCP? The ZHP and base m3 both received 325mm rotors while the Competition package ans Z4M got the bigger 345mm Last edited by 3002 tii; 11-10-2017 at 12:08 AM.. |
|
Appreciate
0
|
11-12-2017, 09:37 AM | #42 | |
Captain
536
Rep 929
Posts |
Quote:
Brand new wheel bearings all around. Perhaps the G's i'm pulling causes the caliper(s) to unstick on the sliders? After this happens, I never get it again on the same corner. You're correct, I mean the 345mm variant. ------ On an unrelated note, does anyone have comparison between the REAR 3.0si and Z4M calipers? Specifically, piston size and any differences in pad size? I'm wondering if I'm missing too much rear brake emphasis... EDIT: Just checked my front wheel bearing, and it is "bad" again! 1 week old. It was an off brand unit $60 for two from ebay, second one that went bad this year. Should probably go back to *** units.
__________________
Andre - 2J into a Z4 Coupe!
Last edited by dre99gsx; 11-12-2017 at 05:27 PM.. |
|
Appreciate
0
|
11-12-2017, 07:24 PM | #43 | |
Lieutenant General
2387
Rep 12,635
Posts
Drives: Z4 M, X5, GX460
Join Date: Apr 2008
Location: CT
iTrader: (100)
Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
Quote:
|
|
Appreciate
0
|
11-16-2017, 08:15 AM | #44 |
Captain
536
Rep 929
Posts |
Ok - being that the Z4M front rotor fits the 3.0si, and the 335i front caliper fits with fairly good and even tolerances, does anyone have any photos showing that the Z4M front caliper can/can't fit the 3.0si?
I've read some posts saying it can't, but there was no measurements or actual data to show this (seems just hearsay). Can anyone positively confirm? Reason I ask - I'm looking to piece together some other components for the front, and knowing what can/can't fit will help me determine what else I can swap over. If a Z4M caliper can fit up front, then I can follow some of the E46 M3 upgrade paths for the front system without issue. I may be able to mix/match parts from Stoptech to move up to a 355mm system knowing this info. Since no one makes a 355mm upgrade to the 3.0si (or E46 330i from what I've seen), I may have to piece something together. Am I not happy with my current brakes? No. Why do I want to do this? Because Racecar
__________________
Andre - 2J into a Z4 Coupe!
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|