Some decent brakes with 13" rims
#1 _majuva33_
Posted 10 January 2006 - 08:18 PM
As I get really cheap 13" track tyres, I would like to keep the 13" rims. This, of course, restricts what I can do. I also don't want this to cost an arm and a leg (I need them when I'm driving).
What would you guys suggest? I'd need straightfoward 'nuts and bolts' type of advise on what to buy and how to go about doing the upgrade. Someone mentioned Volvo four spot calipers. If these are the way to go, what would I need for this conversion? I've heard of some of the NC guys running Volvo four spot calipers.
Also, how would I go about converting the rears to discs and what discs/calipers etc should I use? I'd like to keep the Torana stud pattern all around.
Any advise would be much appreciated!
Cheers
Mark
#2
Posted 10 January 2006 - 09:06 PM
Might be worth a look at that setup.
You need to have a handbrake ? If so maybe the pintara caliper too as it has the handbrake built into the caliper.
For the front the norm for Nc is the Volvo Girling 4 pot caliper on a BMW 3000 vented disc (DBA375- but they don't make it anymore...... shop around)
Its not a bolt on......and they machine the rotor down from 272mm to 256mm. There is some mucking around to make it all fit. But it does work
Theres at least 2 Nc car owners on this forum who should be able to offer advice on the how toos
Mind you I think one is running drum stubs and fabricated brackets and a different disc and the other is running BMW calipers
Hopefully someone else will chime in with some real advice.
#3 _Sammy_
Posted 11 January 2006 - 02:12 PM
#4
Posted 11 January 2006 - 03:33 PM
#5 _majuva33_
Posted 11 January 2006 - 04:49 PM
I actually just got an interesting email from Peter Koning from Hoppers Stoppers. Sammy might also be interested in this.
They are looking at the possibility of fitting a HQ caliper and modified HQ rotor of slightly reduced diameter onto a Torana stub axle. This will give you ventilated HQ brakes, all as a bolt on. Apparently, there'll be a need, however, for a 10mm wheel spacer.
If they go ahead with this, the NC fellows could also use these as they are 'period' brakes.
They would supply the whole thing as a bolt on package.
If anyone is interested in getting further info on this, email Peter at:
hopstop$hoppers.com.au replacing the $ with @
The more that are interested, the more likely they'll go ahead with production.
#6
Posted 11 January 2006 - 09:14 PM
Its actually on the yellow car the Brock was running recently
As for the rear disc
Commodore backing plates bolt up to the flange on your diff
But you'd have to try your wheel on a Commodore first to see if everything clears.
Have to knock his studs out of the axle first though as the stud pattern is wrong.
Any model VB-VS will do.
#7 _Sammy_
Posted 13 January 2006 - 01:25 PM
dattoman, im getting a VN-VS V8 LSD for another project so i will be able to use that for testing but why the pintara discs ? if the wheels fit over the commodore caliper, to me that would mean it will clear the disc aswell ?
#8
Posted 13 January 2006 - 01:59 PM
Thats just what I use on my racecar
#9 _LH350_
Posted 18 January 2006 - 07:43 AM
We have thought about this for a while as the Group NC Torana race cars have
the same problems, they need big brakes but have to use parts which were
made at that time and inside 13 inch wheels.
We have done a bit of experimenting and can see a way to fit a HQ caliper
and modified HQ rotor of slightly reduced diameter onto a Torana stub axle.
This will give you ventilated HQ brakes, all as a bolt on.
We set this up here with various 13 inch wheels and found that it would only
work with regular HR or similar offset wheels, not deep inset Torana steel
wheels.
and then only with a 10mm wheel spacer.The wheel must be straight through
from rim to centre at 13 inch size, not stepped down.
That means the wheel track will go out 20mm (3/4 inch ) per side. If you can
work with this we can look at pricing same.
14 inch would be no problem and would keep std track.
I assume you would want to keep original Torana stud pattern.
That means we start with a new blank HQ rotor, drill to early pattern and
turn the nose to 2.5 inch where the wheel sits.
Then modifiy the o/d, cost $250 each rotor.
HQ calipers are easy to find, allow $130 each reco.
wheel bearings are $20 a side, hoses $44 each
Good pads around $80 a set
Soons adds up to $968. can do slotted rotors for extra $100 a pair.
As I say, the main thing is the wheel must be straight through from rim to
centre to clear the caliper.
Regards
Peter Koning
#10 _Sammy_
Posted 18 January 2006 - 01:02 PM
if its going to cost $1000 i've spend the extra and go the 290mm twin piston kit
#11 _CHOPPER_
Posted 18 January 2006 - 05:32 PM
#12 _82911_
Posted 18 January 2006 - 09:22 PM
Straight forward really.
Caliper adapter plate on drum brake stubs.
Torana hub turned down slightly in diametre to suit Volvo rotor.
1/4" spacer with hub locator on outside of rotor.
1/2" wheel studs.
Turn down rotor to 10" OD.
Slight grinding on caliper to suit wheel weight clearance.
Modify caliper to have 1 fliud inlet instesd of 2.
Brake lines to suit.
CANNOT FIT SPRINTMASTETRS.
Wheel track increased by 15mm / side over standard.
Stops VERY WELL....
Cheers Greg..
#13
Posted 19 January 2006 - 06:28 PM
Grant..
#14 _Sammy_
Posted 20 January 2006 - 01:43 PM
#15 _lcgtr_
Posted 26 January 2006 - 02:13 AM
Edited by lcgtr, 26 January 2006 - 02:13 AM.
#16 _lcgtr_
Posted 26 January 2006 - 02:44 AM
Were they on all UCs.
#17
Posted 26 January 2006 - 10:17 AM
#18 _CHOPPER_
Posted 26 January 2006 - 11:24 AM
#19 _Sammy_
Posted 27 January 2006 - 12:47 PM
this is the one i have .... only real noticable difference i can see is that mine has a counter sunk allen key bolt in the top hole .... as you can see in this pic it needs it for the disc to clear the adaptor....
these are vb-vk brakes by the way.
#20 _82911_
Posted 27 January 2006 - 10:39 PM
UNTILL you try to get a 254mm rotor and 4 spot calipers inside a 13" wheel!
It's not that easy....
Everything fits.....JUST!
Cheers Greg..
#21 _sik66_
Posted 17 February 2006 - 09:51 AM
#22
Posted 17 February 2006 - 09:19 PM
#23 _sik66_
Posted 18 February 2006 - 09:02 AM
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