warped rotors...again

[saxophonias]

I must have changed more that 5 sets of discs to discover that the stronger i i have ever used were some FTEs. I changed them (after 100.000km) as they were a bit warped and they had some acceptable wear. The thing is that i bought from ebay some grooved and drilled Brembos and they are doing the same thing. After 3000km i have them on, and without severe braking the symptoms of vibrating steering while braking is there again I must replace my braking fluid though, but i thing this isn't causing any problems of such kind. I used to thing that they should be stronger due to grooved/driller surface. Do you know whether i can fix them by resurfacing them?

[BETEK]

I suggest you to swap rear discs, in case you don't have already. They will help a little bit the front ones to last more.
For the front ones I suggest Brembo MAX discs. Mine's last about 90000km with hard use.
But the best choice is to put bigger discs for example 282mm from ek9, dc2 etc
Also check the front wheel bearings maybe they are the reason for the warped discs

[BETEK]

Brembo Max after 90000km


I forced to changed them because one bearing has problem.
And for the bearing the one disc became warped the other one was in perfect condition

[Dodo Bizar]

I drove over 300k with my first set... second set is now on only for about 10k or so and still in near perfect condition. Bearing problems perhaps? Or really bad roads?

My first set was completely worn out and actually below service limit in various spots. It was warped only in radial direction, warping due to skewness in wear and tear. In rotational direction still no warpage whatsoever to my knowledge.

[BETEK]

Yes, here in Greece we have real bad roads with many potholes.
Now mine civic's bushings needs replacement.

[saxophonias]

how do i check the bearings?

[BETEK]

In my car the one of the front bearings had lash/wobbling. But there was no sound when the car was running.
The test is very simple.
Hold the wheel with your hands, then move it up and down and right and left to check the wobbling.
But the official Honda description of testing the bearing is written in the manual and is with special gauge. According to that, the acceptable wobbling limit is 0.05mm

[BETEK]

I am thinking one brake set-up for ej9s (262mm discs) long time now but I have never saw it on the net.
So the set-up that I am thinking is:

To swap discs from Honda Civic CTDi EU9 2002-2005 (1.7 diesel model) with stock calipers from ej9.
The pads in both car have the same width
The discs of CTDi is 260mm in diameter and thickness is 23mm (2mm more than ej9 discs, so bigger heat capacity). And we know that bigger heat capacity of brake discs is equal to better braking times and duration.
Maybe will be needed a little bit grinding at the ej9 caliper brackets (green line on the photo)


Here is the detailed specs of discs (from Brembo http://bremboaftermarket.com/En/Car_Dis ... earch.aspx)

Civic 1.7 CTDi : http://bremboaftermarket.com/En/Car_Dis ... e7d35cf6a1
http://bremboaftermarket.com/En/Car_Dis ... ster=10907

EJ9 (262mm disc): http://bremboaftermarket.com/En/Car_Dis ... 3f4f80b48a
http://bremboaftermarket.com/En/Car_Dis ... ster=10881

[saxophonias]

as far i know the 262 set up is more prone to warping due to bigger-stronger caliper power. The piston is strong for the thickness of a normal disc. The smaller discs (240) didn't have similar problems so often due to smaller power the caliper put on the discs.

[BETEK]

as far i know the 262 set up is more prone to warping due to bigger-stronger caliper power. The piston is strong for the thickness of a normal disc. The smaller discs (240) didn't have similar problems so often due to smaller power the caliper put on the discs.

Maybe you are right.
Considering that Civics type R ep3, fn2 and s2000 have 54mm diameter calliper pistons and bigger, thicker discs than ej9s 262mm discs with the same diameter calliper piston





One another solution is to put bigger discs (286mm) with the stock callipers and aftermarket brake calliper guides but in this case it is necessary to have 15 inch rims and above
This kit is very good especially for the cars that have 240 discs . The 262mm discs equipped cars have more options on brake upgrading because they don't need to change the knukles
http://jdmaster.net/product/honda-front ... ade-286mm/


286mm discs vs 262mm discs