A lot of pedal play after rear Supra TT brake upgrade
#16
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there is no need to change the MC. you may have air in the system; are your pads/calipers new or secondhand?
I ran supra TT calipers on all 4 corners on my sc300, a original stock sc300 healthy brake MC works great.
I have made the nipple on bottom install mistake in earlier years, it definately does puzzle you for a while (because its an obvious mistake)
I ran supra TT calipers on all 4 corners on my sc300, a original stock sc300 healthy brake MC works great.
I have made the nipple on bottom install mistake in earlier years, it definately does puzzle you for a while (because its an obvious mistake)
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there is no need to change the MC. you may have air in the system; are your pads/calipers new or secondhand?
I ran supra TT calipers on all 4 corners on my sc300, a original stock sc300 healthy brake MC works great.
I have made the nipple on bottom install mistake in earlier years, it definately does puzzle you for a while (because its an obvious mistake)
I ran supra TT calipers on all 4 corners on my sc300, a original stock sc300 healthy brake MC works great.
I have made the nipple on bottom install mistake in earlier years, it definately does puzzle you for a while (because its an obvious mistake)
#18
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there is no need to change the MC. you may have air in the system; are your pads/calipers new or secondhand?
I ran supra TT calipers on all 4 corners on my sc300, a original stock sc300 healthy brake MC works great.
I have made the nipple on bottom install mistake in earlier years, it definately does puzzle you for a while (because its an obvious mistake)
I ran supra TT calipers on all 4 corners on my sc300, a original stock sc300 healthy brake MC works great.
I have made the nipple on bottom install mistake in earlier years, it definately does puzzle you for a while (because its an obvious mistake)
![](http://i161.photobucket.com/albums/t229/KingFish714/TTbrakes002.jpg)
![](http://i161.photobucket.com/albums/t229/KingFish714/TTbrakes008-1.jpg)
![](http://i161.photobucket.com/albums/t229/KingFish714/TTbrakes013.jpg)
Front with a 15mm Ichiba V2 spacers, these were really easy to install. Now my front is FLUSHED with my fender, well more flushed than before..
![](http://i161.photobucket.com/albums/t229/KingFish714/TTbrakes022.jpg)
![](http://i161.photobucket.com/albums/t229/KingFish714/TTbrakes023.jpg)
![](http://i161.photobucket.com/albums/t229/KingFish714/TTbrakes024.jpg)
![](http://i161.photobucket.com/albums/t229/KingFish714/TTbrakes021.jpg)
Im thinking about some spacers in the rear, I really like how the car sits with the rim sitting out more..
Last edited by 6SOARER; 09-16-09 at 12:06 PM.
#21
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The original posters rear brakes are not working. That's why the pedal is soft and he is pushing through pedal pressure because of trapped air in the rear calipers.
I verified that this is the case by driving my car up onto a sliding wheel lift when I had this issue. The front wheels slid on the sliders while the rear brake that were supposed to stop the car did not work!
I actually missed TX2K9 because of this
I verified that this is the case by driving my car up onto a sliding wheel lift when I had this issue. The front wheels slid on the sliders while the rear brake that were supposed to stop the car did not work!
I actually missed TX2K9 because of this
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yups. thats called installation FAIL; happens reasonably often actually, for some reason calipers can be swapped and mounted upside down, people overlook it and try to drive.......it dosnt work very well.
I ran my car as DD in san francisco and on trackday open tracking (infineon) with 4 corners supra TT brakes + stock sc300 master cylinder and brake booster. lots of wangan runs, trips to LA as well......
if you know how to modulate your brakes, you do not need to change the master cylinder. if you want to waste money for no reason, go for it. You may find a slight difference in pedal feel, or not. Car will stop exactally as fast/slow as before the MC change
if you have a dead MC and brake booster and have a crashed MK4 TT and want ot hybrid, go for it.
I ran my car as DD in san francisco and on trackday open tracking (infineon) with 4 corners supra TT brakes + stock sc300 master cylinder and brake booster. lots of wangan runs, trips to LA as well......
if you know how to modulate your brakes, you do not need to change the master cylinder. if you want to waste money for no reason, go for it. You may find a slight difference in pedal feel, or not. Car will stop exactally as fast/slow as before the MC change
if you have a dead MC and brake booster and have a crashed MK4 TT and want ot hybrid, go for it.
#24
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I just finished flipping the rears around and man am I IMPRESSED. The stopping force on this setup is CRAZY, feels like I need a 5 point harness to hold my upper body back from shooting forward. That did the trick.
Good looking out Wangan and Ryan, ya'll really knew what ya'll were talking about
. To those of you that insist that I needed a MC or a brake booster, no offense but ya'll dont know diddly BIG TIME FAIL!!!!
Good looking out Wangan and Ryan, ya'll really knew what ya'll were talking about
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#26
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I just finished flipping the rears around and man am I IMPRESSED. The stopping force on this setup is CRAZY, feels like I need a 5 point harness to hold my upper body back from shooting forward. That did the trick.
Good looking out Wangan and Ryan, ya'll really knew what ya'll were talking about
. To those of you that insist that I needed a MC or a brake booster, no offense but ya'll dont know diddly BIG TIME FAIL!!!!![Thumb Down](https://www.clublexus.com/forums/images/smilies/thumbsdown.gif)
Good looking out Wangan and Ryan, ya'll really knew what ya'll were talking about
![Thumb Up](https://www.clublexus.com/forums/images/smilies/thumbsup.gif)
![Thumb Down](https://www.clublexus.com/forums/images/smilies/thumbsdown.gif)
![EEK!](https://www.clublexus.com/forums/images/smilies/eek1.gif)
Care to quantify your seat of the pants brake torque at wheel increase via physics? Measure your caliper piston and rotor diameters stock vs. Supra and I'll be glad to do the math for you with MC line pressure at lock being the static control constant.
![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
Remember, your car is as fast as it feels. No need to measure it.
![Roll Eyes (Sarcastic)](https://www.clublexus.com/forums/images/smilies/rolleyes.gif)
#27
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From someone who installs calipers upside down? Classic. ![EEK!](https://www.clublexus.com/forums/images/smilies/eek1.gif)
Care to quantify your seat of the pants brake torque at wheel increase via physics? Measure your caliper piston and rotor diameters stock vs. Supra and I'll be glad to do the math for you with MC line pressure at lock being the static control constant.![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
Remember, your car is as fast as it feels. No need to measure it.![Roll Eyes (Sarcastic)](https://www.clublexus.com/forums/images/smilies/rolleyes.gif)
![EEK!](https://www.clublexus.com/forums/images/smilies/eek1.gif)
Care to quantify your seat of the pants brake torque at wheel increase via physics? Measure your caliper piston and rotor diameters stock vs. Supra and I'll be glad to do the math for you with MC line pressure at lock being the static control constant.
![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
Remember, your car is as fast as it feels. No need to measure it.
![Roll Eyes (Sarcastic)](https://www.clublexus.com/forums/images/smilies/rolleyes.gif)
I rather do the install backwards and find out later that it was wrong than buying parts that wasnt nessacary. Besides I didnt do the initial install, I payed a guy to do it. I was too lazy to do it myself and wanted them on at the time. I kinda rushed the rears and dude EFFED up.
Anyhow, my TT brake setup works with great results
![Woot](https://www.clublexus.com/forums/images/smilies/woot.gif)
Last edited by 6SOARER; 09-19-09 at 09:59 AM.
#28
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No they dont. Matter of fact I need to replace the brake pads probably in the next 2k miles or so.
I rather do the install backwards and find out later that it was wrong than buying parts that wasnt nessacary. Besides I didnt do the initial install, I payed a guy to do it. I was too lazy to do it myself and wanted them on at the time. I kinda rushed the rears and dude EFFED up.
Anyhow, my TT brake setup works with great results![Woot](https://www.clublexus.com/forums/images/smilies/woot.gif)
I rather do the install backwards and find out later that it was wrong than buying parts that wasnt nessacary. Besides I didnt do the initial install, I payed a guy to do it. I was too lazy to do it myself and wanted them on at the time. I kinda rushed the rears and dude EFFED up.
Anyhow, my TT brake setup works with great results
![Woot](https://www.clublexus.com/forums/images/smilies/woot.gif)
![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
#29
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sounds like a physics class in here. i think that if the modder feels comfortable with their set up and the way it feels then leave it at that. unless people are the engineers of the whole abs brake set up unit or tt brake crap, their "factual" arguments are jibberish to me. no offense. experience and common sense will always prevail over knowledge learned through a book. but back to the original post, doesn't the calipers have an "R" and "L" stamped onto it on the inside of the caliper? i would assume that those designate "right" and "left" calipers correct? im about to install my fronts once my left caliper comes in and on my right caliper theres an "R" stamped on it. reading this thread was interesting and humerous at the same time.
#30
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Yeah, I didnt understand half what he was saying and wasnt interstered in his MATH so I left it at that.
I really didnt inspect the calipers when they were off. I'll check today when I pull the rears off to replace the pads with new ceramic pads. I know that the rotors have "R" "L" stamped on them, I would think it wouldnt matter unless there cross drilled rotors but there stamped for a reason I guess.
I really didnt inspect the calipers when they were off. I'll check today when I pull the rears off to replace the pads with new ceramic pads. I know that the rotors have "R" "L" stamped on them, I would think it wouldnt matter unless there cross drilled rotors but there stamped for a reason I guess.