Quote:
Originally Posted by bimmerboyE92
In preparation for the start of the season... I went to install new pads. Now mind you, this is the first set of pads we've actually put wear on. The first set of Ferodo's we didn't like the amount of pedal pressure so those came off after a few sessions.
Needless to say, I was disappointed with the pad taper I found... come on, these are AP calipers right? Well, this was the first corner I took apart, all other corners had maybe 1mm of taper.
Root cause? Both front calipers were left hand calipers. Hard to tell unless you look at the part number or study the piston sizes. Both of which I am aware of now but not when I first installed.
A few emails to AP Racing a new right hand caliper was in my hands 2 days later.
Hopefully this solves alot of the pull and quirks of the car under breaking. Maybe I can take some of the rear toe back out. Just driving on a cold day with bald RE71Rs on track the car feels so much more planted and sure under braking.
PSA... check your caliper part numbers. the 3S is left hand and 2S is right hand. Arrows should be pointing to the sky when installed. Small piston is the first piston as the wheel rotates. Don't trust the part numbers and/or wording on the boxes. I had put each box at each corner of the car and compared the labels and the part numbers were all different so I figured I'd be good. Well, the right front caliper the shipping box and inside boxes were labeled correctly but the caliper itself was the wrong one.
[img] https://live.staticflickr.com/65535/...107ccdc0_c.jpg[/img]F9528AEB-D7B1-47AF-B273-0E243DAF0940 by D S, on Flickr
Large piston is the first in the wheel rotation which is wrong...
[img] https://live.staticflickr.com/65535/...14f8c16e_c.jpg[/img]369C676D-8990-402C-BA58-9DCF6C6D8E16 by D S, on Flickr
Correct right hand front caliper is a 2S.
[img] https://live.staticflickr.com/65535/...7a13f858_c.jpg[/img]11F32B37-6AF4-40C5-92B4-86BB20A35A6E by D S, on Flickr |
Nice catch. I never would've thought this would happen. Good on AP for rectifying.