VP Brake Upgrade

[LowVp]

well guys here is my question, i am looking to go up to 330mm rotors VP Gts rotors but can't seem to source the calipers, will the VT calipers do the job on 330mm rotors?

[Adza75]

The HSV calipers will, but the normal VT calipers are 296mm rotors... which are bigger than your current VP ones, but not as big as you want to go.

[1991_Vn2nV]

well guys here is my question, i am looking to go up to 330mm rotors VP Gts rotors but can't seem to source the calipers, will the VT calipers do the job on 330mm rotors?

If you're going to get HSV VT calipers, why not get the VT HSV rotors as well?? Pretty sure they are cheaper per rotor than the VP GTS ones.

[vnv8driver]

Im sure you already have this sorted but if all your foing is upgrading the discs and calipers then dont bother, the stock brake booster on the v6 is below sufficiant and you would benifit upgrading to the complete vt twin piston brake option which includes the discs, calipers, master/booster etc.

[LowVp]

Im sure you already have this sorted but if all your foing is upgrading the discs and calipers then dont bother, the stock brake booster on the v6 is below sufficiant and you would benifit upgrading to the complete vt twin piston brake option which includes the discs, calipers, master/booster etc.

i already have picked up a 1" master cylinder and the missus works in the clutch and brake industry so i can get rotors cheap as but can not find me calipers and i wanted to keep to factory parts so they are easier to replace but not so.

[Reaper]

Try Hopperstoppers in Vic. The do interstate mail order and have many different combinations/upgrade kits available.

Reaper

[fnlow1]

Yeah they are just C4 calipers - hoppers stoppers or Race Brakes Sydney will post them to you no worries

[Reaper]

Yeah they are just C4 calipers - hoppers stoppers or Race Brakes Sydney will post them to you no worries

Yes and no.... Just going thru this now. The old C4 caliper has been superseded with a newer PBR Design. The C4 was the Heavy Duty varient (to take 28mm wide disks was also made by PBR but the originals are slightly different. Hoppers only sell the new one + adapter bracket.

Reaper

[fnlow1]

Can you link me - I'm confused

[LowVp]

emailed him as soon as i read you post reaper.

Yeh those rotors will be ok.

You will need from us a pair of calipers at $185 each and a bracket set $150.

Also maybe a pair of braided hoses $75 each

[Reaper]

emailed him as soon as i read you post reaper.

Yeh those rotors will be ok.

You will need from us a pair of calipers at $185 each and a bracket set $150.

Also maybe a pair of braided hoses $75 each

Does the bracket set include an adaptor plate? The C4 caliper doesn't bolt directly to the Commodore mounting points.

Reaper

[PaRaDoX]

why not just go for the popular VT upgrade?

i think you'll find the vt calipers have tons more contact area than your stock calipers will have.. and a 2nd piston.. what im trying to say is 296mm VT brakes work TONS better than 290mm v8 / VR brakes because they have a much wider contact area and they're cheaper to source.. not to mention you can still use 15" wheels with them (have fun with 330mm and a flat tyre :P)

330mm calipers will set you back atleast $500-800 for just the fronts, where as a entire VT conversion will cost $550 incl hub adaptors... not to mention it will beable to stop a VP ute very quickly (much lighter than the car they are used in even VZ!)

just my 2c, take it or leave it

[Reaper]

why not just go for the popular VT upgrade?

i think you'll find the vt calipers have tons more contact area than your stock calipers will have.. and a 2nd piston.. what im trying to say is 296mm VT brakes work TONS better than 290mm v8 / VR brakes because they have a much wider contact area and they're cheaper to source.. not to mention you can still use 15" wheels with them (have fun with 330mm and a flat tyre :P)

330mm calipers will set you back atleast $500-800 for just the fronts, where as a entire VT conversion will cost $550 incl hub adaptors... not to mention it will beable to stop a VP ute very quickly (much lighter than the car they are used in even VZ!)

just my 2c, take it or leave it

Whats the deal with a flat tyre??? You make some good points. I like the idea of 330mm as my car will spend significant amounts of time on the track + I have most of the parts I need

Reaper

[VrWagz1]

I think he maybe mean if you have a stocco rim for a spare.

Agreed though for road use the vt upgrade is plenty, as long as you do the vt booster and master aswell, the vt brakes work nearly 2wice as good with it rather than the 1" master and v8 booster. Got it on the wagon and it stops easy as, did it on a mates tray back vr ute and they nearly roll it end over end if you hit them hard enough.

[hjtrbo]

I very recently got the 330mm and twin piston PBR kit off E bay. $600 with everything included, pick up from Croydon. They work well and look good stashed under the 17's. Way cheaper than Hopper stoppers. Highly recommended if you dont wanna splash out on the HSV 343mm 6 piston upgrade.

[vnv8driver]

weve been through this he is strapped for cash for the vt upgrade, although the best option i can think of.

[VrWagz1]

VT brake upgrade would have to be the cheapest going, just dont buy those rip off kits on ebay for $500, buy your own second hand ones for under $100.

[1991_Vn2nV]

Like you're going to get hub adaptors, braided brake lines, rotors, pads, calipers for under $100.

[VrWagz1]

Like you're going to get hub adaptors, braided brake lines, rotors, pads, calipers for under $100.

You wont get the lot, but you'll get the rotors calipers and adaptors for about $100, i paid $110 all up, if your lucky the pads in the old calipers will have a fair bit of meat left on them like mine did. But you'll need to splash out on the adaptor braided lines though. So $200 all up.

[MasterOfReality]

The VT upgrade will require an engineers in most states I believe (certainly in NSW when I asked about it).

[50LTRv8]

Correct me if I am wrong but wouldn't the upgrade need to be done by a qualified brake workshop?

[LowVp]

Does the bracket set include an adaptor plate? The C4 caliper doesn't bolt directly to the Commodore mounting points.

i'd say the bracket set is the adapter


why not just go for the popular VT upgrade?

i think you'll find the vt calipers have tons more contact area than your stock calipers will have.. and a 2nd piston.. what im trying to say is 296mm VT brakes work TONS better than 290mm v8 / VR brakes because they have a much wider contact area and they're cheaper to source.. not to mention you can still use 15" wheels with them (have fun with 330mm and a flat tyre :P)

330mm calipers will set you back atleast $500-800 for just the fronts, where as a entire VT conversion will cost $550 incl hub adaptors... not to mention it will beable to stop a VP ute very quickly (much lighter than the car they are used in even VZ!)

why do things by halves, missus is in the brake and clutch industry and i can get rotors fairly cheap. 17's are now also cheap and so is the rubber and 330 will stop quicker again then 296 and as reaper also said, i drag and drift.

*he VT upgrade will require an engineers in most states I believe (certainly in NSW when I asked about it).

*Correct me if I am wrong but wouldn't the upgrade need to be done by a qualified brake workshop?

as all parts are already ADR approved i just need an approval from (QLD) department of transport and what is a mechanic going to do that i can't

[1991_Vn2nV]

You wont get the lot, but you'll get the rotors calipers and adaptors for about $100, i paid $110 all up, if your lucky the pads in the old calipers will have a fair bit of meat left on them like mine did. But you'll need to splash out on the adaptor braided lines though. So $200 all up.

I didn't think VR's needed the hub adaptors..?

[1991_Vn2nV]

This is SA, but its ADR related so it should be Australia wide (it definitely includes most of the states):

"If brakes are upgraded, it is essential that:
(a) The correct master cylinder is fitted;
(b) There is an adequate reservoir (disc brake systems usually require a larger reservoir);
(c) Front to rear brake balance is compatible and does not result in excessive wheel lockup on one axle during moderate braking.
(d) That all components of the braking system are compatible.
Transport SA approval is required before any alterations are carried out to the braking system of a passenger vehicle manufactured on or after 1 July 1977 (ADR 31) or a passenger car derivative manufactured on or after 1 January 1979 (ADR 35).
The fitting of alternative brakes may also alter wheel track dimensions, which in itself may not be illegal, however, it may cause confusion for enforcement bodies unless Transport SA has issued some formal acceptance of the modification."

So perhaps it is best to ask motor reg first mate, just to make sure.

[VrWagz1]

I didn't think VR's needed the hub adaptors..?

Yeah they need those adaptor rings to go on the hubs to center the rotor.

And Yes you need an engineers certificate in nsw. I did the vt booster and master when i did the brakes so i have a good pedal, im not so sure if the engineer would have passed it, if i had the old vr booster and master.

Definatly if you are doing track work, i would be goin with the 330mm rotors as the vt 296mm setup isnt really suitable for that.