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Brake Shudder

Posted: Tue Nov 09, 2010 5:04 pm
by Kuran
Hey guys,
When I apply the brakes there is a considerable amount of shudder coming through the pedal and there seems to be a bit of inconsistency. I've heard that machining the discs fixes this problem, any ideas?? I'd appreciate a quote on fixing this too if any of you guys have encountered the same thing. Cheers, Kuran

Re: Brake Shudder

Posted: Tue Nov 09, 2010 5:18 pm
by Kustom
Yeah your discs could be warped.

Re: Brake Shudder

Posted: Tue Nov 09, 2010 5:23 pm
by Supplanter
Can you get slotted/cross-drilled rotors machined?

Re: Brake Shudder

Posted: Tue Nov 09, 2010 6:53 pm
by aza013
Supplanter wrote:Can you get slotted/cross-drilled rotors machined?
Yep.

Re: Brake Shudder

Posted: Tue Nov 09, 2010 7:19 pm
by Kuran
how much do you rekon it'll set me back?

Re: Brake Shudder

Posted: Tue Nov 09, 2010 7:23 pm
by bduffman
get gpx calipers and master and get slotted rotors there not cheap
Look up dba rotors I need some to but got no money I can get them cost price though

Re: Brake Shudder

Posted: Tue Nov 09, 2010 8:35 pm
by Supplanter
Kuran wrote:how much do you rekon it'll set me back?
A few years ago I got the stock rotors machined for around $25 I think, shouldn't be much more than that now.

Re: Brake Shudder

Posted: Tue Nov 09, 2010 9:18 pm
by silverGPX
Anyone know the minimum diameter on the discs?

Re: Brake Shudder

Posted: Wed Nov 10, 2010 12:20 am
by bass_twitch
Mate I had this problem really bad when I bought my beast.
I ended up replacing the rotors and pads..
Put slotted RDAs and Bendix CRTs on.
Not too expensive and stops like a dream now :)

Re: Brake Shudder

Posted: Wed Nov 10, 2010 10:24 am
by Kuran
Thanks for the advice guys, appreciate it. I'll look into it over the weekend

Re: Brake Shudder

Posted: Wed Nov 10, 2010 12:07 pm
by spency
Lol. I had rotors machined, brakes bled and new pads installed for a carton of piss by a mate who works at beaurepairs. So on the mainland, should only cost $50?

Re: Brake Shudder

Posted: Wed Nov 10, 2010 12:58 pm
by Shhtuart
silverGPX wrote:Anyone know the minimum diameter on the discs?
276mm - GPX & GPvR.

Re: Brake Shudder

Posted: Wed Nov 10, 2010 1:17 pm
by Kuran
I spent every last cent i have on my fto so until saturday I can't even afford petrol :D. I'll have some big $$ though when i sell my other car

Re: Brake Shudder

Posted: Wed Nov 10, 2010 3:09 pm
by dstocks
The RDA slotted rotors are well priced and will stop that problem occurring unless you are crazy on the brakes. Unfortunately, stock GR/GPX rotors warp fairly easily. If you get them machined, theyll be OK, but if you are heavy on the brakes, theyll just warp on you again. I think the RDA's are around $220 for the fronts from memory and are well worh the outlay (better braking and less chance of warping). You shouldnt need to replace the rears as they are unlikely to warp (they do a lot less work when braking).

Re: Brake Shudder

Posted: Wed Nov 10, 2010 4:04 pm
by bass_twitch
I got my rda slotted rotors for 180 I think :) just shop around

Re: Brake Shudder

Posted: Wed Nov 10, 2010 5:38 pm
by dstocks
even better.....

Re: Brake Shudder

Posted: Wed Nov 10, 2010 6:30 pm
by Kuran
Are the standard DBA425 rotors any good (in terms of long life and not warping and things)? I don't brake that hard unless i'm having play time :twisted: Would they be worth my money though or am i better off paying 100 bucks more for slotted?

Re: Brake Shudder

Posted: Wed Nov 10, 2010 7:01 pm
by aza013
Slotted foe the win.
It's better to have them there when you need them not wish that you had put them on when your breads fall away.

Re: Brake Shudder

Posted: Wed Nov 10, 2010 7:19 pm
by Bennoz
Avoid the 400 series full stop. They're just standard rotors slotted or drilled to order. You want decent ones, the 4000 series is the only way to go.

Re: Brake Shudder

Posted: Wed Nov 10, 2010 7:48 pm
by Kuran
DBA's website says the 4000sl's are 300 bucks each 8O