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Old 19-09-13, 23:27   #1
Gouldy
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Hsv brakes

G'day guys just wondering what type of brakes people have on their vl"s when running big hp as I was looking at putting the ve ap hsv 365mm rotors on my vl what size wheels would u need for clearance with those rotors?
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Old 20-09-13, 00:27   #2
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good luck with the APs
Nothing is impossible but expect to have a massive head**** trying to find anything other than custom to fit. You'll pay through the nose. Dog bones are nowhere near as cheap as you'd expect with one off customs unless you can design them yourself on Solidworks etc.

Furthermore, unless your name is Jason Clements and you've got guards pumped like arnie you're only going to be able to fit a 235 in there, because you'll need a 20" rim to clear those calipers. So aside from the impractibility and horrible ride you'd have to have it jacked up a bit, compromising the handling you desire. And finally you would have **** all grip up front, without ABS you'll just lock them anyway. Not to mention the fact you'd need at the minimum a custom dual master and balance setup to set it up to be worth the effort. Expect to pay rediculous amounts for decent tyres that will perform close to the limit of those brakes.


In my oppinion unless you're tracking it on wider tyres you won't be able to outperform the nissan 4pots from a 33gtst or 32gtr. If you really want to you could also fit 33/34 brembos. VHR32 on these forums does the front adapters for these calipers, and vnhsv5000 330mm rotors will slip straight onto your standard struts. 17" rims are possible or do the VT hub and rotor to run 16" rims. 17" rims allow a good choice of wheels and tyres for all occassions, drag, track, street, and then you can go bigger if you need.

then 2 piston rear 32gtr/33gts rears to match the 4piston fronts, also a bolt on job with dog bones. VT/S master-booster combo will give you the pedal and pressure you need.
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Old 20-09-13, 02:09   #3
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^^ Like he said. Go 330mm, better fit and you can run 17s with concave rims.
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Old 20-09-13, 11:15   #4
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I was under the impression that 15" rims fit over the hub adaptors, rotors and calipers??

That brake setup does seem a little over the top though, unless you planed on some serious circuit time and plan on plently of other upgrades and mods as stated above.

Cheers,

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Old 20-09-13, 11:57   #5
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Yeah I'm getting my rb30 engine built as we speak will b good for 900-1000hp and I'm also getting a turbo400 fitted so the car is gunna have some descent power so I will need as good brakes as I can get

---------- Post added 20-09-13 at 11:59 ----------

Thnx for the help guys :-)
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Old 20-09-13, 12:15   #6
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I'm running the HSV brakes 343mm front and 315mm rear harrop 4 piston all round. I also have the VS booster, VT master and braided hose upgrades. Was an easy bolt on affair with the harrop supplied hub adaptors front and rear.
This setup seems to compliment each other really well. Gives you heaps more confidence on the brakes and has a great pedal feel. I run Michellin pilot tyres all round to help grab the road, however I have to run 17-18" wheels. They are not the cheapest brake upgrade, but they are an excellent road package on a VL and expect they would be decent on track also.
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Old 20-09-13, 14:39   #7
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Is that the 1inch pbr brake master cylinder mr squiggle?
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Old 20-09-13, 15:06   #8
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Is that the 1inch pbr brake master cylinder mr squiggle?
VS plastic booster / VT master.
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Old 20-09-13, 15:19   #9
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All depends on the wheel size you plan to run?

The only thing I wanted when I was deciding on a brake kit was that they fit under a 16inch wheel. VHR32 on these forums supplied me with R32 Gtst 4 pots, 296x28mm VT floating discs, conversion hubs and all the bracketry. Went on like a dream, and fits perfectly under the 16inch Aero without a spacer.

Although, havn't tested it as yet! Can only see it as being a HUGE improvement from the standard VK set up!
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Old 20-09-13, 15:26   #10
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So u can get 17"s on the 343mm rotors?
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Old 20-09-13, 15:38   #11
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So u can get 17"s on the 343mm rotors?
I run an 18" rim, but yes you can run a 17" as minimum.
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Old 20-09-13, 17:02   #12
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What would they b roughly worth for a set font n back complete
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Old 20-09-13, 17:32   #13
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Originally Posted by 5LEEPR View Post
I was under the impression that 15" rims fit over the hub adaptors, rotors and calipers??

That brake setup does seem a little over the top though, unless you planed on some serious circuit time and plan on plently of other upgrades and mods as stated above.

Cheers,

Steve
Not with any HSV brakes VT onwards.
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Old 21-09-13, 07:04   #14
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i went with the r33gtst 4 pots an bracket from vhr32 and vn 330mm discs on my vl just gotta run 17inch wheels minimum
still have to test out the 1inch master booster but ill prolly upgrade the turbo vl stuff to either a vs booster/vt master or vt booster/master

im running the vt 298 upgrade on my vs with the vt master vs booster and the master upgrade helped heaps there but im told they shud work ok with the turbo booster with 1inch master on the vl but im not so sure
still gotta find a 17x4 space saver spare sumtime
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Old 21-09-13, 14:34   #15
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What do you want to do with the car? because if you're dragging it there's a few points to be made:

consider your wheels and tyres, because I don't think harrop 4 pots on a 315 rear rim will fit under a 15" will it? If you plan on going drag racing you're probably going to want to run a 15" rim to get the maximum wall you can. also most sensibly sized DOT radials/rag slicks for VL's are in a 15" rim size. At the same time you need to consider front runners if you want to run slicks... 17" front runner wheels do exist, look up "greg weld 17" front runners" and you'll find that they are around, except you'll have to buy them out of the states, and the exchange is not what it was 3 months ago. If you're mostly going to be dragging it I would strongly recommend you limit yourself to a 15" rear, and possibly just a 15" front for ease. Mazda 4pots are reasonable calipers, they don't fit on a big disk, so you lose a bit there, but they will allow 15" front runners and still give good braking.

Otherwise I would still recomend the nissan 4pot fronts and 2pot rears. to run 330x30 front and 279x20 rears is a 100% bolt on job with off the shelf calipers. Will not require any hub/handbrake adapters, only two sets of dogbones that total =~6-700$.
Or the nissan 4pots can be done on the VT disks with hub adapters as said, and fit a 16" front wheel.

Obviously you should upgrade to a minimum vs/vt master, and new fluid.

People need to remember we're talking about ~12-1300kg cars here, with no ABS, ESC, a flexible chassis and relatively skinny tyres.

if you've got 1000hp I would expect you would be wanting to drag that, so maybe consider what you want out of the setup first, before trying to "match" brakes to HP. Because a VL that makes 1000hp and is auto would probably be pretty uncomfortable and not all that fast around a circuit anyway.
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Old 21-09-13, 20:05   #16
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There's a guy on here who fitted the Harrop Ultimate kit to his vl, someone might know his name for you to contact him.

If you can afford to build a motor with that much power I wouldn't muck around with Nissan 4 pots. Sure they're a good upgrade, but at the end of the day there's better options, wether it be performance or looks you're going for, and if your in a position that allows you to spend more then do it.

From what I found, the price you're paying for late model HSV brakes you'd be better off going aftermarket to the likes of Wilwood (which are that common on vl's now you wouldn't have any problems with fitment), AP's (HSV anyway) or Harrop's. With some wide wheels (9-9.5'' with a good offset on the rear) with good tyres, and a good suspension setup you'll have a car that would stop extremely well.
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Old 21-09-13, 20:35   #17
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Cars gunna b mostly for street with the occasional night al Calder park
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Old 22-09-13, 16:38   #18
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I did the Harrop 4 piston conversion to my VL, best thing I did. You need the rear backing plate adaptor/hand brake kit from Harrop which from memory is $550 - 600.

Pretty much halved the stopping distance of the car and I fitted braided lines so pedal feel is awesome with the standard VLT 1inch master/booster.

Don't forget, to make the most of a brake upgrade you need good quality premium tyres. There's no point spending money on brakes and than decide to save coin and run chingchong chinese tyres
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Old 24-09-13, 23:24   #19
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Thnx for ur help rjb I'm going the harrop 4 pot also.are ur braided lines all the way to the master cylinder cause I've been told u lose a lot when u go braided lines but may not be the case if you've done it
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Old 25-09-13, 01:44   #20
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good quality hardlines are the way to go, only braid the bits that need to flex.

Mind what I said about a max 15" rear rim too, or do you intend to swap brakes every time you go drag racing (seriously, it's not that hard in the end).



I found my nissan 4pots outperformed sticky bridgestone RE55s on the track, so that's what I was getting at. Unless you have better track and a well setup circuit car I really don't think there's much else that can be done for a light car with no abs and really, really poor weight distribution.
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Old 25-09-13, 17:19   #21
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Thnx for ur help rjb I'm going the harrop 4 pot also.are ur braided lines all the way to the master cylinder cause I've been told u lose a lot when u go braided lines but may not be the case if you've done it
I just replaced the factory rubber brake hoses with braided hose. A pair of PBR braided hoses to suit early commodores is about $60 - $90
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Old 25-09-13, 21:16   #22
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If you want to run 20'" HSV rims or similar you'll probably want the HSV brakes if only for looks but like Chad said if you go drag racing, you'll have to get front runners with correct backspacing/wheel spacers to clear them and even then you dont want huge brakes acting on skinny tyres (lock up too easily)
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Old 30-10-13, 19:18   #23
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What's the biggest size rotor you can fit behind a 15'' wheel?
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Old 30-10-13, 19:26   #24
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I've got 296mm DBA T2 rotors with the standard VT calliper on the front of my VL. Only just fits in by round 5mm to 8mm.

So unless you go for a setup with skinnier callipers, that as big as you will go.

Thats my take on it anyway. Someone else might have something different.

Cheers,

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Old 30-10-13, 19:34   #25
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I've got 296mm DBA T2 rotors with the standard VT calliper on the front of my VL. Only just fits in by round 5mm to 8mm.

So unless you go for a setup with skinnier callipers, that as big as you will go.

Thats my take on it anyway. Someone else might have something different.

Cheers,

Steve
Thanks Steve. Wanting to run 4 pot Wilwoods, and if can avoid having to fit my 20's on to clear the brakes i'd be happy.
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