Performed the OEM non-brembo brake upgrade to 06 Z brakes
#16
01-29-2009, 08:48 PM
For the "WHY" to do this upgrade is discussed here:
https://g35driver.com/forums/brakes-...ar-brakes.html
https://g35driver.com/forums/brakes-...ar-brakes.html
#17
02-04-2009, 09:02 AM
#18
02-04-2009, 01:01 PM
#19
02-06-2009, 05:05 PM
#20
02-06-2009, 05:09 PM
FYI - The specs on the master cylinder, at least in cylinder bore size, for the G35 (all non-Brembo 2003-2007) and G37 (Akebono 4-piston/2-piston calipers) are the same. Both have a 1" cylinder bore. The Brembo-equipped master cylinders are 1.0626" cylinder bore.
The brake booster used in the G37 coupe is the same as is used in the G35 Brembo-equipped coupes, but realistically, the brake booster shouldn't have any real impact on brake bias - more likely on braking feel/effort.
Using the specs from the 2004-2007 G35 coupes and the 2008 G37 coupe FSM's, the brake bias calculator at this link (http://www.tceperformanceproducts.co...alculator.html), and using the same assumptions for all setups (leg input of 60 lbs, coefficient of friction of .4 for front and rear), I calculated that:
- The G35 Brembo coupe has a brake bias of 65.3% front bias. Brake torque is 47.5k in-lbs f/23.8k in-lbs r
- The G35 non-Brembo coupe (in 2003-2004) has a brake bias of 62.3% front. Brake torque is 47.9k in-lbs f/27.9k in-lbs r
- The G35 non-Brembo coupe (2005-2007) has a brake bias of 67.8% front. Brake torque is 64k in-lbs f/29.7k in-lbs r
- The G37 with Akebono 4 piston BBK has a brake bias of 67.1% front. Brake torque is 64.7k in-lbs f/30.8k in-lbs r
- The 2005-2007 G35 with G37 BBK added should, theoretically at least, have the same brake bias as the G37 since the master cylinder bore is the same. However if yours is a 2003-2004, the brake torque all around will increase significantly, requiring much less pedal effort, and the bias will be thrown more towards the front.
Keep in mind, this is static bias, assumes same coeff. of friction all around, doesn't account for weight transfer, weight of the rotors, etc. so take with a grain of salt, but it suggests that you are at least in good starting shape with this mod. Comparison testing would be necessary to confirm that the dynamic bias isn't significantly off.
Also, this doesn't look specifically at torque values and
The brake booster used in the G37 coupe is the same as is used in the G35 Brembo-equipped coupes, but realistically, the brake booster shouldn't have any real impact on brake bias - more likely on braking feel/effort.
Using the specs from the 2004-2007 G35 coupes and the 2008 G37 coupe FSM's, the brake bias calculator at this link (http://www.tceperformanceproducts.co...alculator.html), and using the same assumptions for all setups (leg input of 60 lbs, coefficient of friction of .4 for front and rear), I calculated that:
- The G35 Brembo coupe has a brake bias of 65.3% front bias. Brake torque is 47.5k in-lbs f/23.8k in-lbs r
- The G35 non-Brembo coupe (in 2003-2004) has a brake bias of 62.3% front. Brake torque is 47.9k in-lbs f/27.9k in-lbs r
- The G35 non-Brembo coupe (2005-2007) has a brake bias of 67.8% front. Brake torque is 64k in-lbs f/29.7k in-lbs r
- The G37 with Akebono 4 piston BBK has a brake bias of 67.1% front. Brake torque is 64.7k in-lbs f/30.8k in-lbs r
- The 2005-2007 G35 with G37 BBK added should, theoretically at least, have the same brake bias as the G37 since the master cylinder bore is the same. However if yours is a 2003-2004, the brake torque all around will increase significantly, requiring much less pedal effort, and the bias will be thrown more towards the front.
Keep in mind, this is static bias, assumes same coeff. of friction all around, doesn't account for weight transfer, weight of the rotors, etc. so take with a grain of salt, but it suggests that you are at least in good starting shape with this mod. Comparison testing would be necessary to confirm that the dynamic bias isn't significantly off.
Also, this doesn't look specifically at torque values and
#22
02-10-2009, 11:50 AM
The oem brembos and probably the Akebonos would perform on the track along longer. (Although I don't know if they have track type pads for the Akebonos yet). The Brembos have lots of diff pad options.
#23
02-10-2009, 12:30 PM
I guess it depends on what you want. If you ever want to track, these oem brakes probably won't be up to the task. Although you could upgrade the fluid and pads to help them survive track duty better.
The oem brembos and probably the Akebonos would perform on the track along longer. (Although I don't know if they have track type pads for the Akebonos yet). The Brembos have lots of diff pad options.
The oem brembos and probably the Akebonos would perform on the track along longer. (Although I don't know if they have track type pads for the Akebonos yet). The Brembos have lots of diff pad options.
Initially I was trying to have everything ready for Willow Springs the end of this month - but that just isn’t gonna happen - so its a wait & see game for me at this point.
#26
06-30-2009, 06:25 PM
Just chancing my brakefluid used to cause that. But i did go with motul rbf600. It was average on the street but once it got to its optimum temp, it required less and less pedal travel to stop on a dime.
#28
07-01-2009, 12:34 PM
different pads will fix that - no need to replace calipers... but you will lose the bite that OEM pads have. I love the feel of OEM but hate the dust... I have Hawk HPS which dont dust but the bite sux (especially cold) - many people like Project Mu pads = good bite and no/low dust.
#29
07-02-2009, 01:37 PM
But my pads were low, rotors were getting thin and I was tired of the dust. The price of new rotors and new pads (front / rear) approached the cost of me swapping out to a set of used (but in good condition) 06z calipers, rotors, pads (front/rear). No brainer as far as I was concerned. All the benefits of world class 60-0 braking and none of the dust. Was a bit more work than just a rotor/pad replacement but not much at all. ESPECIALLY if you planned on a brake fluid flush anyway (which I did anyway).
#30
07-08-2009, 09:55 PM
Hate to ask a stupid question, but could you not purchase the following from any vendor and still consider the system "upgraded" to the 2005+ twin piston brakes?
2 remanufactured twin piston calipers for 2005 G35 (~$75 each)
2 new OEM-style rotors (~$65 each)
1 set new front pads (~$45)
So for $325 you could have the 05+ OEM brakes for your 2003-204 sedan (RWD 6MT)??
2 remanufactured twin piston calipers for 2005 G35 (~$75 each)
2 new OEM-style rotors (~$65 each)
1 set new front pads (~$45)
So for $325 you could have the 05+ OEM brakes for your 2003-204 sedan (RWD 6MT)??