Brakes Machineing or upgrade?

[anton1o]

Got a question regarding my breaks, now they seem to be a bit worst for ware.. Wondering what should be done with them so any help would be good

Here's a few pic's of the rippel that they have.. I suppose with a ripple as that.. The pads are rooted also

So my options..
Can these be Machined and how much would that cost?
How much would new holden rotors cost?
How much do Slotted rotors cost?

[mattman]

Machining will fix that if you have enough meat left, 8mm i recall is the minimum.

Pads will have to be changed regardless, as they will have a bump mirroring the ripple, and will only damage your machined/new rotors (depending which way you go).

Rear rotors on ebay (couldn't find any fronts?? should be about the same though) are about $180 for slotted or half that for standard. Machining is usually $25-30 per rotor. Either will be fine though and freshly machined rotors are just as good as a new pair, no point replacing them unless you want to upgrade (slotted or larger) or run out of meat.

[MyVPIsFasterThanYourVP]

Got a question regarding my breaks now they seem to be a bit worst for ware.. Wondering what should be done with them so any help would be good

Here's a few pic's of the rippel that they have.. I suppose with a ripple as that.. The pads are rooted also

So my options..
Can these be Machined and how much would that cost?
How much would new holden rotors cost?
How much do Slotted rotors cost?

Lazy people like you are the reason the world is going to ****. You need to stay at school, and at least learn to spell. It scares me ****less that you are in control of a motor vehicle, can you read the signs you drive past?

[anton1o]

Lazy people like you are the reason the world is going to ****. You need to stay at school, and at least learn to spell. It scares me ****less that you are in control of a motor vehicle, can you read the signs you drive past?

Breaks = Brake?
Pics = Pictures?
Rippel = Ripple?
Rooted = Not in suitable driving conditions for a motor vehicle?
So my options.. = Please advise me thru my decisions before i purchase an upgraded set of brakes?
MyVPIsFasterThanYourVP = An ignorant person who cant read slight spelling mistakes?

I measured them both up, and it didn't even clear 2", practicaly its about 8mm or so.. Ive never seen maching done but i suppose they shave the silver off the rotor and also the end lip aswell..

I think they may possibly not even come to the minimum once machined.

[Boonz]

they just take .5 to 1mm cuts off at a time until the surface is flat. depending on how bad they are an average cut will take 1 to 2 mm off a rotor

[V8 Berlina]

Upgrade to VT brakes is the way to go.

[SweetWagon]

Breaks = Brake?
Pics = Pictures?
Rippel = Ripple?
Rooted = Not in suitable driving conditions for a motor vehicle?
So my options.. = Please advise me thru my decisions before i purchase an upgraded set of brakes?
MyVPIsFasterThanYourVP = An ignorant person who cant read slight spelling mistakes?

you forgot ware = wear

ps. nice ute Peanuts(Boona)

[immortality]

replace is better then repair, the thinner the rotor gets, the less heat it can obsorb, therefor you get brake fade earlier. nothing to upgrade on the back, just fitted new rotors and pads. if you wanna upgrade then fit the VT upgrade package to the front and fit a 1" master cylinder as well

[anton1o]

Yeah the vt brake upgrade is nice, but the price it sells for is very expensive.

Now i got off the phone with a company who sells DBA Slotted, but they have 2 different types..
270mm - $147
296mm - $150

Will any modification need to be made if i put on the 296mm?

[immortality]

296mm from memory is for the VT and would require all the other bits to upgrade, i.e. hubs, calipers, pads, brake lines. 270mm is the standard VN rotor i beleive

[anton1o]

Ahh ok, looks like i will just be going the 270mm's if all goes to plan

[hakhawk]

nooo, dont go 270s


go check out my ride thread, i upgraded mine a few weeks ago.


go out and buy some vp-vr finned calipers.

they will bolt up to the vn strut and allow for 289mm discs, part number is dba017 i think.

its late, im going to sleep for work 2moro, go look at the last couple pages of my ride thread, its all in there i think. if not, ill go thru it all tomorrow for you.



and on a side note, MyVPIsFasterThanYourVP, if you really must have a go at someone for how they spell stuff and gramar, do it in a pm, dont waste a pointless post on his thread. this is the internet, not everything wil be perfect, people make mistakes, people cant spell some things, who cares. it made sense to me, i didnt have to go back and re read it, my mind reads the words as what theyre sposed to be, not what they are if read wrong.

night all.

[Boonz]

if your interested in the 289mm rotors and calipers drop me a pm cos i just took mine off cos i upgraded to VT fronts.
comes with brand new pads,used slotted rotors(can machine if need be), lines, 5,000 k old wheel bearings, backing plates,i put new piston seals in them about 2 years ago

[immortality]

the 289mm rotor and finned calipers is the standard V8 brake package from VN to VR i believe (was also used on the turbo VL cars as well). it's a very small upgrade in my opinion and still uses the same size pads as your 270mm setup. if you want better stopping power then the VT upgrade is the way to go. if your not intending to abuse the brakes much then teh smaller 289mm setup would be ok. make sure you use good pads and fluid too

[hakhawk]

ahh, but with a minor modification to some hx pads(bigger) you get more pad area on the disc.

and they were standard on vp s2 -vr v6 aswell.

[anton1o]

How much do 'VP-VR' finned calipers cost?
I dont really want to spend large amounts or have to cut/grind or modify part parts to make them fit..

Im a noob, i build computers.. So if its plug-and-play im interested in doing it then

It would cost me about $200 for a set of 270mm DBA's and then rougly $60 pads.

[Boonz]

i will sell you mine for $200 if your interseted in doing the conversion. they ahve only been off my car for not even 3 weeks. comes with everything you need

[anton1o]

Probarbly wont be needing yours, i ended up calling back the people i wanted to buy from..

Stupid idiot, miss quoted me said 'Oh dba doesnt sell in pair' so $150 for Slotted rotors is more $300

[friedchicken]

ahh, but with a minor modification to some hx pads(bigger) you get more pad area on the disc.

and they were standard on vp s2 -vr v6 aswell.

The pad size wont acctually help anything, only make them last longer. Once they wear to the disc, they will be worse than the smaller pad.

Basically, the outer edge of the disc is the most effective part (leverage if you like) but because the disc moves past the pad faster, it wears faster, so a worn in setup will have less pressure on the disc at the outer edge (due to the hx pad extending further into the center of the disc), and hence wont work as well. Your disc is effectivly 'smaller'.

ie. dont do it

[hakhawk]

funny, this article says to do it

http://autospeed.drive.com.au/cms/A_0835/article.html

[friedchicken]

My engineering textbooks/formule/lecturers say otherwise.

edit: i read that article a fair while ago, and thought it was a great idea. and yes it may help with heat dissipation. But my opinion has changed since learning about clutches etc. naturally they had an improvement in brake effectiveness... funny that they just replaced the pads.

As hard as i find it to believe, in a 1D situation, area makes no difference to friction, position is however important when talking about a rotor/clutch

Edit2: that pad hasnt worn in yet either, which is another reason why performance is better.

[anton1o]

Oh well, i was able to get the price down on rotors to.. $95ea, and then im thinking about some Bendix Ultimate Pads.. Does anybody have any other preferences?

Also what type of brake fluid should i run for these babies, i know D.O.T 5.1 but any brands in particular to jump on

Thanks alot guys