If you have read my post on "ER34 goes corner carving in Cameron Highlands", you would have noted me mentioning about the front rotors on the ER34. Well, they are in dire need of some doctoring. The car judders a LOT during hard braking up to the point of me losing confidence on the effectiveness of the brakes.
Pic 1: 310mm rotors in pretty bad shape
Finally today I took the car to a workshop and got the rotors removed. I've decided to skim the rotors, get it balanced and slotted at the same time. With the rotors removed, it is apparent on how bad it is. The surface are no longer smooth and the contact patch with the brake pads are uneven. It's also a good opportunity to inspect the piston rubber seals on 4 pot calipers. So far so good. Looks like they don't need replacing. :P
Pic 2: Skimming the rotors
Pic 3: Newly skimmed rotors
After the rotors are removed, it is sent to the machine shop for skimming. Over in the machine shop, it is then meticulously measured and slotted. I had 5 slots done per side of the rotors.
Pic 4: Slotting the rotors
With 'new' rotors, the old pads need to be ditched. It comes from the factory with Hitachi pads (Part No. HP57H FF). These were replaced with Endless Vita Nuova VN9500 (Part No. EP230VN) brake pads.
Pic 5: Endless Vita Nuova VN9500
Pic 6: Part No. EP230VN
Pic 7: Endless brake pads
After everything was done and put back in place, I did a couple runs to bed in the new brake pads. After which, tried some hard braking and the juddering is gone. Woohoo!!
The whole darn process took 5 bloody hours to complete. Can't imagine how I hung around while it is being done. :O
Pic 8: Completed!!
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