Racing Brake Big Brake/Lightweight Rotors Reviewed.
#27
Team, got a photo which illustrates the clearance of the RB calipers? I'm curious now...
#28
There was never an issue with caliper clearance, i just played it safe and went with the enkei offset option from RB, that created a problem with rubbing on the balljoint and i had to switch out for the OE offset kit which still works just fine with rp03s in 18x9.5 +38s.
#30
the bukkake master!
at first my stoptech bbk had a softer pedal feel than stock but as i drove the car more it stiffened up nicely and is slightly stiffer than stock now.
#32
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#35
I made some poos
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Kit is for the front only. Racing Brake doesn't make a caliper/rotor kit for the rear. They only make the rotors for the rear. So you only need to buy 1, unless you feel like buying 2 and giving me one!
#36
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I actually have a drawing from them for making rear adaptor mounts to use their 2-pot rear calipers on an RX-8, but there's no e-brake function and having the adaptors machined would be quite expensive due to their complexity
they decided that it wasn't feasible to pursue the idea, I came to the same conclusion too after reviewing the drawing ...
this thread kind of bugs me though, it was a bit lame to not determine why his original Enkei kit rotors rubbed on the ball joints. Mine had plenty of clearance ... it seems like he'd rather blame RB than find the true cause of the problem, a bit injust IMO
they decided that it wasn't feasible to pursue the idea, I came to the same conclusion too after reviewing the drawing ...
this thread kind of bugs me though, it was a bit lame to not determine why his original Enkei kit rotors rubbed on the ball joints. Mine had plenty of clearance ... it seems like he'd rather blame RB than find the true cause of the problem, a bit injust IMO
Last edited by TeamRX8; 05-02-2008 at 12:21 AM.
#39
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Just curious where the weight saving figures are coming from in this thread. I calculate up to 9.85 pound savings per corner in the front (not 13) and 3 pounds per corner in the rear (not 4.5). What am I missing? Thx
#41
I actually have a drawing from them for making rear adaptor mounts to use their 2-pot rear calipers on an RX-8, but there's no e-brake function and having the adaptors machined would be quite expensive due to their complexity
they decided that it wasn't feasible to pursue the idea, I came to the same conclusion too after reviewing the drawing ...
this thread kind of bugs me though, it was a bit lame to not determine why his original Enkei kit rotors rubbed on the ball joints. Mine had plenty of clearance ... it seems like he'd rather blame RB than find the true cause of the problem, a bit injust IMO
they decided that it wasn't feasible to pursue the idea, I came to the same conclusion too after reviewing the drawing ...
this thread kind of bugs me though, it was a bit lame to not determine why his original Enkei kit rotors rubbed on the ball joints. Mine had plenty of clearance ... it seems like he'd rather blame RB than find the true cause of the problem, a bit injust IMO
I guessed wheel bearing wear; when I have the car jacked up and rotate the front wheel in the air there is a point where the rotor catches the brake pad with greater friction.
That's been the case with the OEM set up and the Racing Brake set up out of the box with no mileage; so somethings off I'm guessing with the wheel bearings.
You see from the picture at the beginning of the thread how much clearance i had between the ball-joint and the backside of the rotor; I'm listening if you have ideas....
Edit I still have the original rotors, RB sent me rotor hats to swap out not actual rotors, so I can measure the thickness of the rotors if that's what you mean dan.
#44
Originally Posted by Polak
you shed about 26lbs off the front end with the addition of the BBK and 2piece rotors and another 9lbs or so in the rear.
EDIT: If you mean where in general those numbers come from, its the difference in weight between"
FRONT:
1. the 2piece rotor and the stock rotor.
2. the stock caliper and the RB caliper
3. the stock mounting bracket and the RB mounting bracket
4. the stock pads and the HPS pads
5. the stock brake lines and the Goodridge lines.
REAR:
1. the 2piece rotor and the stock rotor.
2. the stock brake lines and the goodridge lines.
3. the oem pads and the HPS pads
#45
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^ Was actually trying to get the specifics... Re-lloked at all versions and it appears that the lighest rotars are 14 pounds. Used them and came up with 11.5 pound savings, relatively close to your 13 pounds.
Here are the numbers that I have seen published from Racing Brake
OEM Rotars: 18 pounds
RB Rotars: 14 pounds
Savings: 4 pounds
OEM Rotars: 12.5 pounds
RB Calipers: 5 pounds
Savings: 7.5 pounds
Here are the numbers that I have seen published from Racing Brake
OEM Rotars: 18 pounds
RB Rotars: 14 pounds
Savings: 4 pounds
OEM Rotars: 12.5 pounds
RB Calipers: 5 pounds
Savings: 7.5 pounds
#46
^ Was actually trying to get the specifics... Re-lloked at all versions and it appears that the lighest rotars are 14 pounds. Used them and came up with 11.5 pound savings, relatively close to your 13 pounds.
Here are the numbers that I have seen published from Racing Brake
OEM Rotars: 18 pounds
RB Rotars: 14 pounds
Savings: 4 pounds
OEM Rotars: 12.5 pounds
RB Calipers: 5 pounds
Savings: 7.5 pounds
Here are the numbers that I have seen published from Racing Brake
OEM Rotars: 18 pounds
RB Rotars: 14 pounds
Savings: 4 pounds
OEM Rotars: 12.5 pounds
RB Calipers: 5 pounds
Savings: 7.5 pounds
Scott, I should have my set in by Saturday. Possible meet next week to check them out. But 9 LBS of weight per corner is a significant reduction! that along with some light weight wheels and you would be laughing.
For the price the RB stuff came very highly reccomended. I really wanted a set of the Endless Mini 6 pots. But too much $$.
#47
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Scott, I should have my set in by Saturday. Possible meet next week to check them out. But 9 LBS of weight per corner is a significant reduction! that along with some light weight wheels and you would be laughing.
For the price the RB stuff came very highly reccomended. I really wanted a set of the Endless Mini 6 pots. But too much $$.
For the price the RB stuff came very highly reccomended. I really wanted a set of the Endless Mini 6 pots. But too much $$.
#50
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Yes they do.
It is strange I was having the same rubbing issue Polak was describing on the ball joint. It only rubs when I turn the wheels at a 45 degree angle....
I Mean it literally is Just mm of Clearance.
Called and talked it over with them they are going to be sending me the standard offset rotor hats so that I can change it out.
They were thinking it might have something to do with my coilover suspension setup....
Team did you do anything special for installation?
yes, the RacingBrake Enkei wheel kit
the 18 x 9.5 +45 RPF1 doesn't have anywhere near the caliper clearance as the OE wheels, it will be an issue for most BBKs
I'm still not sure what Polaks issue was, I have over 1/8" clearance from my RB Enkei wheel option rotors and the spindle![Dunno](https://www.rx8club.com/images/smilies/dunno.gif)
the 18 x 9.5 +45 RPF1 doesn't have anywhere near the caliper clearance as the OE wheels, it will be an issue for most BBKs
I'm still not sure what Polaks issue was, I have over 1/8" clearance from my RB Enkei wheel option rotors and the spindle
![Dunno](https://www.rx8club.com/images/smilies/dunno.gif)
I Mean it literally is Just mm of Clearance.
Called and talked it over with them they are going to be sending me the standard offset rotor hats so that I can change it out.
They were thinking it might have something to do with my coilover suspension setup....
Team did you do anything special for installation?