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Thread: vt twin piston brakes

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    MattyVRss's Avatar
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    Default vt twin piston brakes

    hey just wondering what a good price 2 pay 4 a set of vt twin piston calipers with slotted rotors as i know a guy wrecking a vr ss and has this brake upgrade on it and said he would sell them 2 me and work out a price when he gets back from his holiday.. just want a rough price on what it would all be worth as i have no idea what u would pay 4 them and so i have sum info when he tells me a price.. thanks

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    to give u an idea , i got my brakes from a wrecker they were off a vy, callipers and stock rotors that had dun stuff all kms i paid $100 for the lot

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    Quote Originally Posted by v8_bomberdore View Post
    to give u an idea , i got my brakes from a wrecker they were off a vy, callipers and stock rotors that had dun stuff all kms i paid $100 for the lot
    thanks mate thats all i would of thawt they would be worth

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    I paid $70 for my calipers and stock rotors off ebay. If you look on ebay at the new kits for sale they are stupid in price, they are only worth around 100 - 150 in good condition.
    Quote Originally Posted by Blown V6 Hatch View Post
    Has ACL stopped making flat top pistons or something? Grinding a heap off the heads seems to be the latest fashion...
    Quote Originally Posted by Reaper View Post
    It's cheap and half arsed - perfect fit for a Commodore
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    You're much better off piecing together your own kit Then you get to choose good rotors, and good pads.

    edit: just out of interest OP, do you have a 15/16" master cylinder, or 1"? Ask your mate if he ever upgraded his brake master cylinder and booster, because the VTs used a 1 1/4" master cylinder to compensate for the larger piston volume of the twin pots.
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    Quote Originally Posted by Morton View Post
    You're much better off piecing together your own kit Then you get to choose good rotors, and good pads.

    edit: just out of interest OP, do you have a 15/16" master cylinder, or 1"? Ask your mate if he ever upgraded his brake master cylinder and booster, because the VTs used a 1 1/4" master cylinder to compensate for the larger piston volume of the twin pots.
    i have no idea what is on mine as im pretty new 2 the brakes side of cars i have neva had the need to play around with them before lol but im guessing everythin would be stock on my car ..... i will ask him about the 1 1/4" master that ur talking about. he used to work at the local brake and clutch place in town so im guessing he might have changed it but i will find out 4 sure... do i have to use the bigger master cylinder to run the 2 potters?

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    You don't HAVE to, but I guarantee if you're running a 15/16" master, the twin pots will make your pedal feel TERRIBLE. A similar sensation to stepping on a cheesecake, if I'm correctly informed.
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    Quote Originally Posted by Morton View Post
    You don't HAVE to, but I guarantee if you're running a 15/16" master, the twin pots will make your pedal feel TERRIBLE. A similar sensation to stepping on a cheesecake, if I'm correctly informed.
    I found pedal feel to be fine with the 15/16" master cylinder. It's got a bit more travel then standard but nothing major. I eventually swapped to VT master cylinder and Harrop 4 pots all round, noticed no difference in pedal feel or travel to 15/16" m/c and vt calipers (except nearly went through the front windscreen when I stepped on the pedal).
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    being a VR, i would say it has the 15/16 cylinder. my whole kit cost about 350 or so. that included new rotors, used calipers, brake lines, vt master cylinder, vs booster and shims to fit the rotors. definite improvement over the old brakes. very happy for the price.

    1995 Manual HSV Clubsport
    Wade Cam :: 9.2:1 CR :: Pacemaker headers :: Twin 2.5" Exhaust :: VT Brakes
    1991 Supercharged VN Berlina
    9 PSI SC14 Intercooled :: Genie headers :: Twin cats :: HM Twin 2.25 exhaust :: 3.45:1 LSD




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    Quote Originally Posted by stocky View Post
    being a VR, i would say it has the 15/16 cylinder. my whole kit cost about 350 or so. that included new rotors, used calipers, brake lines, vt master cylinder, vs booster and shims to fit the rotors. definite improvement over the old brakes. very happy for the price.
    Where bouts did u get it all at that price? Or did ya just keep hunting around for the right price on bits separately?

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    most of it from the wreckers, rotors and brake lines i bought new

    1995 Manual HSV Clubsport
    Wade Cam :: 9.2:1 CR :: Pacemaker headers :: Twin 2.5" Exhaust :: VT Brakes
    1991 Supercharged VN Berlina
    9 PSI SC14 Intercooled :: Genie headers :: Twin cats :: HM Twin 2.25 exhaust :: 3.45:1 LSD




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    Quote Originally Posted by FusionX View Post
    I found pedal feel to be fine with the 15/16" master cylinder. It's got a bit more travel then standard but nothing major. I eventually swapped to VT master cylinder and Harrop 4 pots all round, noticed no difference in pedal feel or travel to 15/16" m/c and vt calipers (except nearly went through the front windscreen when I stepped on the pedal).
    Are you sure you had a 15/16 master. A bit more travel is an understatement, its litterally to the floor before the pistons even hit the rotors, if i jumped on the anchors really hard i could touch the pedal on the floor, i couldnt stand it and found it to be dangerous. I found a massive improvment in pedal height and the performance of the brakes when i did the vt master/booster upgrade...a week later cause it was to bad for the missus to drive as it was.
    Quote Originally Posted by Blown V6 Hatch View Post
    Has ACL stopped making flat top pistons or something? Grinding a heap off the heads seems to be the latest fashion...
    Quote Originally Posted by Reaper View Post
    It's cheap and half arsed - perfect fit for a Commodore
    Reaper

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    Certain it was 15/16 m/c. The wife didn't notice any difference at all when the calipers were changed (she picked the car up from mechanics after the brakes were done).

    I have had the pedal hit the floor a couple of times, once was from cooking the brakes at Barbagallo, which happened in less then 2 laps (hence the upgrade to Harrops, the VT gear is not up the job). The second was after bleeding them myself from the track day... didn't get all the air out the lines, although a quick trip back to the mechanics fixed that.
    Hot Lap Motorsport

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    Quote Originally Posted by stocky View Post
    being a VR, i would say it has the 15/16 cylinder. my whole kit cost about 350 or so. that included new rotors, used calipers, brake lines, vt master cylinder, vs booster and shims to fit the rotors. definite improvement over the old brakes. very happy for the price.
    wow i was thinking that it would cost way more then that to do a full upgrade like u have.. thats a really good price . yeah the standard brakes r so shit lol i borrowed my neighbours vz ss ute to pick up my irs cradle from the wreckers. and when i got home i jumped in my car took of and come to the end of my street and felt like i wasnt stopping lol i coudnt believe how differnet it felt lol

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