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Arun
03-07-2004, 02:42 PM
Anybody fitted one of these?

I looked in their catalogue and it seems that the 4000 series discs fits only the 03' TJ & TL AWD Magnas. Is there any difference between the AWD and the VR-X brake disks?

http://www.dba.com.au/dba_catalogue_2004/HTML/pdf/Out/2004_4000__mits_web.pdf

I ordered the normal ones instead - Longlife Gold (pic attached) - and got quoted AUD 340 + shipping

hope they will perform.......

TZABOY
03-07-2004, 03:19 PM
Yeah i have them on my TS V6. make sure you get a good set of pads to go with them, i think bendix is the prefered pad to use on them. I would of suggested just slotted rotors instead of cross-drilled as well, i believe cross-drilled can crack between holes with excessive hard braking seen usually on the track

Thunda
03-07-2004, 04:24 PM
yeah i would go with slotted rotors also as when i was looking at a wrx site they had pics of crossed drilled rotors that were to say the least would had been deadly if you were to use them as the cracks looked liked the grand canyon due to the heat causing severe cracking of the rotors :shock:

Redav
03-07-2004, 05:27 PM
I looked in their catalogue and it seems that the 4000 series discs fits only the 03' TJ & TL AWD Magnas. Is there any difference between the AWD and the VR-X brake disks?
Yes. They're larger rotors and calipers are different to suit. The fronts become twin piston calipers but the rears stay single. The fronts increase from 276 to 294 and the rears go from 258 to 276. All dims in mm unless noted otherwise :bowrofl:

Sorry, that's just a note we put on our drawings at work.

Arun
04-07-2004, 02:57 PM
Yeah i have them on my TS V6. make sure you get a good set of pads to go with them, i think bendix is the prefered pad to use on them. I would of suggested just slotted rotors instead of cross-drilled as well, i believe cross-drilled can crack between holes with excessive hard braking seen usually on the track

yours cracked?

The slotted rotors don't look so "good" :) and I think DBA wouldn't manufacture the cross-driled ones if they're cracking so easy. I guess you only have to protect them from water splashes (washing the car) after heavy braking.

Thanks for the info Redav

BOosted' BOoya
04-07-2004, 02:59 PM
no problems here

drive it properly, and you wont have a problem

ie - heat your brakes up normally, dont jump in for the first time on a 0degree morning, then apply your brakes HARD at 100km/hour for its first application.

do a few laps of the town before going to do some heavy braking.. haha i always do :P

Ben.

Redav
05-07-2004, 06:39 AM
Thanks for the info Redav
No worries. I guess what I'm saying is that if you've ordered rotors for your VR-X then the fronts should work but the rears won't.

AussieMagna
05-07-2004, 01:15 PM
cracking will generally only be caused by rapid temperature changes. So like booya said if you start hammering the brakes immediatly on a 0c night with cold pads and rotors thats going to hurt. Also driving through heavy puddles in rain with hot calipers isn't a good idea.

Just give them time to heat up and coll down naturally and its all good.

Altera98
05-07-2004, 04:52 PM
cracking will generally only be caused by rapid temperature changes. So like booya said if you start hammering the brakes immediatly on a 0c night with cold pads and rotors thats going to hurt. Also driving through heavy puddles in rain with hot calipers isn't a good idea.

Just give them time to heat up and coll down naturally and its all good.

hmmm if your cruising at night on the highway and brakes are cold bec they havent needed to be used for a while, and a 6 foot roo skips across your path...what to sacrifice cross drilled rotors or roo?
the way i see it cross drilled rotors on bikes and hipo cars like older porsches are usually very large probably because there is a loss of surface area due to the holes, bikes usually have twin large rotors on the front if they r drilled. A magna has a lack of brake surface area already so a same size disc drilled might have aproblem with lack of surface area.

also drilling is old tech that started on solid discs for better cooling, the dba's are sandwich vented construction, so should have good cooling and the slots get rid of the dust. drilled one probably only has advantage of looks.

BOosted' BOoya
05-07-2004, 05:08 PM
hmmm if your cruising at night on the highway and brakes are cold bec they havent needed to be used for a while, and a 6 foot roo skips across your path...what to sacrifice cross drilled rotors or roo?

LOL lol

doing it once wont kill your rotors, but doing it over, and over and over again will.. :bowrofl:

ok, in reality, you would need less then 10mins of driving, with normal braking (ie, stopping at lights, slowing down for bends, etc) to have your disks at "operating tempeture"

so really, how many of us, live on a highway which is in-undated with roo's from your drive way..

christ, i live in the scrub, and my house is still a good 10mins before i get on the highway where the roos may be at! :bowrofl:

Altera98
05-07-2004, 05:14 PM
LOL lol

doing it once wont kill your rotors, but doing it over, and over and over again will.. :bowrofl:

ok, in reality, you would need less then 10mins of driving, with normal braking (ie, stopping at lights, slowing down for bends, etc) to have your disks at "operating tempeture"

so really, how many of us, live on a highway which is in-undated with roo's from your drive way..

christ, i live in the scrub, and my house is still a good 10mins before i get on the highway where the roos may be at! :bowrofl:

i was kinda jokin, but really is the slight friction of the rotors running inside pads/calipers when your cruising on highway enough to keep them up to a decent temp?

BOosted' BOoya
05-07-2004, 05:49 PM
i was kinda jokin, but really is the slight friction of the rotors running inside pads/calipers when your cruising on highway enough to keep them up to a decent temp?


DBA technical R&D answer when i put that question forth to them before buying my set:

"Yes"

:cool: