CK_318

hey guys, i am thinking of upgrading my brakes soon.
i hav e3 questions:
#1 which one of these to rotors would be better to get?
No.1, Slotted V8 disc rotors
or No.2, GOLD slotted and dimpled V8 disc rotors
the description says that the diameter is 290mm, and similar V6 units say teh diameter is 270mm? so my second question is
#2 will i have to get V8 calipers for me to be able to use either of those discs listed above?
#3 would it be possible for me to use VT twin piston calipers on these discs since the VT units are only 6mm bigger?
thanx for any info or suggestions, as i have alreay asked 3 different people who sell these rotors an dthey have said they know it has been done but they don't know how.

wabbit

you will need the V8 calipers to sit.

but you can't use the VT calipers. the 6mm would be enough for the pads to ride on the outside edge of the disc. Also, the VT discs are thicker.

those discs you have there are to suit a VS commodore, I think.
The earlier ones had an integrated hub, so you would need new hubs to fit.

Does anyone know anything about RDA rotors? I haven't heard of them

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CK_318

i have heard of the brand, but you rarely see them thats all. the pictures shown in those adds do say that they are for illustrative purposes only. so thats not a problem. bugger i would have liked to have used VT calipers.
you can't modify the mounting bracket to make it 6mm lower can you. either on teh caliper or teh strut? and i thought that teh standrad VT rotors were only 28mm anyway?

wabbit

i didn't realise that the pictures weren't of the actual items. if they are for the ones stated, then they'll be right.

DBA make a rotor to suit a VS with VT calipers. I'm not sure what hubs you would neeed to use them, though. have a look at the DBA site and you can get all the dimensions and offsets for anything.

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CK_318

short of these discs i can ask for either custom ones with the same dimensions as VT units, or i get a VT set from the wreckers and go tp my local bearing place and get teh adaptor hubs to suit.

dattoman

If your VN V6 had 14" wheels and a smooth topped caliper its got 270mm
FE2 susp 15" wheels had finned calipers and 290mm
Both these discs are about 23mm thick

The VT runs 296mm 28mm thick
Theres no way your original caliper will go on

What you need to do to run the VT setup is
Hubs..... these are conversion hubs suited to the purpose
VT discs
VT calipers
Pads of course for the VT calipers
Different hoses to suit

Ring Matt at Racebrakes Sydney and he will likely have it all in stock
Infact....... he has the hubs for sale here http://cgi.ebay.com.au/VB-VP-CONVERS...QQcmdZViewItem

CK_318

yeah that racebrakes place hasthe whole set-up on ebay for just over $500 or $600. but thats a more than what i am willing to pay for something thru ebay.and about the thickness, i may have been referring to teh Group A brakes teh 330x28mm ones.

so which one of teh two i have listed above would be better

vkdesire

I just put VT twin spots on tha VK, just used slotted vl turbo 290mm rotors, the calipers bolted straight up and is wearing evenly around so yeah, The VN and VK front struts are pretty much the same as we discussed before wabbs?

I'm using RDA rotors btw...

dattoman

Do not do this

When the pads get low they will flick out the caliper and someone will die
You need to run the 28mm thick disc

I'm amazed you got the caliper on..... it usually fouls the bracket on the hat

CK_318

welll like i said my other options are wreckers/Eastland bearing supplys. or get custom discs to suit VN but are VT dimensions. and i haven;t asked old mate hopw thick those discs are yet so that can be next question. also would i bee able to get to get 300mm rotors in teh VT calipers?

dattoman

No VN disc exists in VT size
And if you went to the trouble they would cost you alot more
Bearing shops won't have the hubs..... they are specific for the application not off the shelf VT ones from bearing shops

Go to the wreckers if you must for your discs and calipers
But you'll still need to spring for the hoses and the hubs

VT rotors are 296mm diameter...... bolt straight on with the hubs ad I said

But....... its brakes man
Don't cheap out..... do it properly

I'll send you pics of my setup so you can see how it works if you like

wabbit

might i add at this point that Dattoman has been working in the brake industry for about a thousand years and has seen more brake systems and stuff ups than you can imagine

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CK_318

well any help will be appreciated. as the more braking i have the safer i will feel.
i was also wonder if you could put the front V8 set up on the rear, if you used the caliper as well. or if i could put my old V6 set up on teh back once i put teh V8 stuff on?

wabbit

no disc that goes on the front of your car without a seperate hub will fit on the back. you need the ones that slip over the hub to go on the end of the axle.

then you have to make a handbrake setup, because the drum arrangement won't work. then you have issues with proportioning valves and stuff. adjustable one need, i assume.

it's more heartache than you can imagine and really not worth the effort.

VT rear discs and calipers should bolt straight on. they're thicker discs. i can't remember if they're ventilated.

essentially, I'd basically go for VT front and rear. It all fits

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vkdesire

what do you mean by fouls the bracket on the hat dattoman?