Brake upgrade options

[AirStrike]

Now I don't think there will be many people who can answer this question but i'm going to throw it out there any way.
I'm trying to work out which way to go with regards to brakes from the following two options;

Option 1: Group A/GTS setup. Twin piston calipers on 327mmx28mm rotors
Option 2: VT HSV upgrade. Twin piston C5 calipers on 330mmx32mm rotors with VT booster and master.

Now the VT setup is going to cost alot more then the Group A is so my question is has anyone driven with both setups? Is the added expense of the VT setup going to give a substantial differnece in the braking?
I had the standard VT setup on my VR with the stock booster and 1" master and was fairly happy with it but still had some pedal travel, hance the booster upgrade.

[MasterOfReality]

Same question that I asked ages ago but didn't really get a response.

Everyone I asked had different opinions, from engineers, mechanics and brake workshops.

I was going to go for the Group A setup, as no engineer cert is required, so less hassle, but I couldn't find a front and rear set for a decent price.

[pow3rslave]

I couldn't speak to the stopping power of either, but i always heard the vt setup needed engineering because of the adaptor plate, whereas because the group a were an optional (albeit top end) brake for the vn, they were ok.

[AirStrike]

I couldn't speak to the stopping power of either, but i always heard the vt setup needed engineering because of the adaptor plate, whereas because the group a were an optional (albeit top end) brake for the vn, they were ok.

Who honestly gets anything engineered? Did you get your engine mods EPA tested and signed off? lol
Not worried about the legalities of it but after which kit is better.

[pow3rslave]

Who honestly gets anything engineered? Did you get your engine mods EPA tested and signed off? lol
Not worried about the legalities of it but after which kit is better.

my engine doesn't have mods, it has... eccentricities

[Not_An_Abba_Fan]

Use the VE spec upgrade kit. Comes with 330mm rotors, VE calipers, pads, braided lines, fluid and all the mounting hardware including hubs to suit the VN. No need to upgrade the booster or the master as the pistons in the calipers have similar displacement to the stock single piston items.

[AirStrike]

Use the VE spec upgrade kit. Comes with 330mm rotors, VE calipers, pads, braided lines, fluid and all the mounting hardware including hubs to suit the VN. No need to upgrade the booster or the master as the pistons in the calipers have similar displacement to the stock single piston items.

Hmmm interesting. Any more info on the kit?

[greenfoam]

I don't know of anyone that's had both but I know lots of people with the VT brakes and don't think they are all they could be. I'd be going with group A infact I'd just be happy with a brake pedal that moved right now

[Vt-Brrrlina]

if ya want the Vt booster i have the race brakes one that i am not gunna use, its the vt booster with the adapters for your brake lines an the adapter to fit the brake pedal or something like that, anyway vt booster to fit vn vp, all it needs is a mastre cylnder...

[Vt-Brrrlina]

by the way i can recomment he VE kit , works a treat

[stocky]

yeah i was going to suggest the VE upgrade kit. with a vt master cylinder, you will need line adapters. vn_luke got them somewhere. you will also need to modify a bracket for a vt booster, or just use a vs booster that bolts straight up

[AirStrike]

yeah i was going to suggest the VE upgrade kit. with a vt master cylinder, you will need line adapters. vn_luke got them somewhere. you will also need to modify a bracket for a vt booster, or just use a vs booster that bolts straight up

Got the modded bracket and a VT booster here, just need to mod the pushrod length and get the double to single flare adaptors (got a price from Hoppers Stoppers last time around $3-4 each).

[stocky]

i think you just need to drill a hole in the pushrod to modify it

[AirStrike]

i think you just need to drill a hole in the pushrod to modify it

Two things, weld up the old hole and move it and also shorten the pushrod length.
http://users.bigpond.net.au/jimbo123/VN/

[Not_An_Abba_Fan]

Hmmm interesting. Any more info on the kit?

There is this Press Releases

322mm rotors, sorry, not 330mm.

[AirStrike]

There is this Press Releases

322mm rotors, sorry, not 330mm.

Interesting. If it will work with the standard booster and master all the better. Got a price at all mate?

[Fu Manchu]

I had a good conversation with Matt at Race Brakes Sydney on this topic and he said he preferred the Group A set up. Much simpler and works equally as well offering the best bang for your buck. It was also matched to the existing brake system on the VN-VP. This was in reference to converting brakes on a old school Commodore.

[Not_An_Abba_Fan]

I have sold this exact set up to another member on here and he didn't have to replace the master or the booster. The only drama is that the calipers are marked left and right, but you fit them the other way around so the bleeders are up the top. I will pm a price to you.

[v8_bomberdore]

how much for the ve kit without the hub adapters because i already have them for my vt brakes, al so does the vt booster make the brakes work better

[Vt-Brrrlina]

Yep that would be me - VERRRY happy customer - though i drive my car like once a weekend maybe if im lucky so i dont notice any extra pedal travel others who drive theres all the time might do - but i can say i can lock the brakes up real easy and the pedal doesnt hit the floor..... also im using the stock booster and master for my vp..

[Leebo]

Use the VE spec upgrade kit. Comes with 330mm rotors, VE calipers, pads, braided lines, fluid and all the mounting hardware including hubs to suit the VN. No need to upgrade the booster or the master as the pistons in the calipers have similar displacement to the stock single piston items.

How much is this mate sounds nice and easy?

[ephect]

i have the VS GTS twin pot 330mm brake setup on my VS and it was easy as, just a note: get new brake hoses (braided or rubber, it doesnt matter) and get them 150mm longer than the standard VN-VS hoses. mine dont sit in the bracket on the strut tower, just a little too short lock to lock.
i recomment this setup, same bolt up, essentially no cert required as they are off the same car. also no need to change the master or booster.

[Vt-Brrrlina]

think mine cost me $765 was easy as piSS to install, and i know nothin bout brakes - just make sure if ya get the Ve brakes they go on opposite to what they are stamped as the VE brakes are on the back of the calliper and the Vn/vp are at the front of the calliper also

[levymetal]

interesting, my car doesn't really stop (sometimes i wonder if it's just my car or if it's normal). would like to hear more about them, but...
*298 diam fits std wheel sizes from 16"
*322 diam fits most wheel sizes from 17"

i run 15 inch stockies, no chance of them fitting?

[greenfoam]

My car before it broke was able to lock up the wheels from 100 without any real problem that's how a stock 5 litres brakes shoudl work. If not you have issues