MONARO REAR BRAKES
Discussion
Hi all, I was wondering if any one as fitted a different caliper to the rear of a Monaro VXR so that the brake pads use the full disc area.
As you know it leaves a good inch or so that is not used on the standard set up.
I know the majority of you will say put a better brake system on the car, but I am satisfied with the standard set up. Its just seeing that annoying amount not been used. ( poor design )
So if it is possible to use a different caliper that fits the original holes in the carrier, and would use the full surface of the disc please advise
Thanks in advance.
Ade
As you know it leaves a good inch or so that is not used on the standard set up.
I know the majority of you will say put a better brake system on the car, but I am satisfied with the standard set up. Its just seeing that annoying amount not been used. ( poor design )
So if it is possible to use a different caliper that fits the original holes in the carrier, and would use the full surface of the disc please advise
Thanks in advance.
Ade
Ade, if you have an inch of unused rear brake disc that sounds like the type of (presumably) after market brake pad.
My car has standard disc's and calipers, and only about 5 mm of the outer edge of the rear disc is not used.
I replaced my standard pads with Monkfish performance friction pads along time ago.
Sadly my disc's and pads now need replacing...oh dear £££ maybe even the calipers as well £££££
As far as I know the only after market calipers available are AP's or Harrop. Other than that check out the American sites. But for that cost you might as well change the whole lot.
To save you having a heart attack try finding the performance friction pads, or even the ones advertised on Pedders Uk.
John
My car has standard disc's and calipers, and only about 5 mm of the outer edge of the rear disc is not used.
I replaced my standard pads with Monkfish performance friction pads along time ago.
Sadly my disc's and pads now need replacing...oh dear £££ maybe even the calipers as well £££££
As far as I know the only after market calipers available are AP's or Harrop. Other than that check out the American sites. But for that cost you might as well change the whole lot.
To save you having a heart attack try finding the performance friction pads, or even the ones advertised on Pedders Uk.
John
I know what he means - on the rear of my monaro vxr there is quite a bit of unused space on the centre of the disc with stock brakes and I'm using upgraded pads I bought from monkfish. Nothing to do with the pads - the holding bracket and caliper just don't reach in far enough to cover this area.
Having said that the circumference is greater towards the outside edge, so more surface area using bigger disks and caliper towards outside edge than a smaller disk with caliper covering it all. I guess it was the best that could be done at the time using the stock caliper?
Looking to replace my discs all round soon....
Having said that the circumference is greater towards the outside edge, so more surface area using bigger disks and caliper towards outside edge than a smaller disk with caliper covering it all. I guess it was the best that could be done at the time using the stock caliper?
Looking to replace my discs all round soon....
Just been through exact same thing
basically cheapest set up for the uk is pads and disk ebc + yellow stuff 315mm . £350 venom motersport
Australia is cheaper but by the time shipping taxes is on i found cheapest was to order 2 sets and sell the other ( group buy??).
add on potential seal kit and fluid bleed .
That all said they are a fairly important thing to have
basically cheapest set up for the uk is pads and disk ebc + yellow stuff 315mm . £350 venom motersport
Australia is cheaper but by the time shipping taxes is on i found cheapest was to order 2 sets and sell the other ( group buy??).
add on potential seal kit and fluid bleed .
That all said they are a fairly important thing to have
Mine's currently having the brakes done too. As above, section of the rear discs not fully used (previous owners replacement HSV discs) so wondering if switching to DBA will help.
I was only going to have the rears done until a front caliper seized so all 4 of those being refurbished too now
Also phoned up performance friction, nice and easy with next working day delivery.
I was only going to have the rears done until a front caliper seized so all 4 of those being refurbished too now
Also phoned up performance friction, nice and easy with next working day delivery.
FizzysCar said:
I know what he means - on the rear of my monaro vxr there is quite a bit of unused space on the centre of the disc with stock brakes and I'm using upgraded pads I bought from monkfish. Nothing to do with the pads - the holding bracket and caliper just don't reach in far enough to cover this area.
Having said that the circumference is greater towards the outside edge, so more surface area using bigger disks and caliper towards outside edge than a smaller disk with caliper covering it all. I guess it was the best that could be done at the time using the stock caliper?
Looking to replace my discs all round soon....
Why did they not just use smaller size discs, as that extra size is pointless and also looks bad, like a bodge job.Having said that the circumference is greater towards the outside edge, so more surface area using bigger disks and caliper towards outside edge than a smaller disk with caliper covering it all. I guess it was the best that could be done at the time using the stock caliper?
Looking to replace my discs all round soon....
I am using EBC Yellow pads on standard discs at the moment.
Ade
mfp4073 said:
Ade, if you have an inch of unused rear brake disc that sounds like the type of (presumably) after market brake pad.
My car has standard disc's and calipers, and only about 5 mm of the outer edge of the rear disc is not used.
I replaced my standard pads with Monkfish performance friction pads along time ago.
Sadly my disc's and pads now need replacing...oh dear £££ maybe even the calipers as well £££££
As far as I know the only after market calipers available are AP's or Harrop. Other than that check out the American sites. But for that cost you might as well change the whole lot.
To save you having a heart attack try finding the performance friction pads, or even the ones advertised on Pedders Uk.
John
JohnMy car has standard disc's and calipers, and only about 5 mm of the outer edge of the rear disc is not used.
I replaced my standard pads with Monkfish performance friction pads along time ago.
Sadly my disc's and pads now need replacing...oh dear £££ maybe even the calipers as well £££££
As far as I know the only after market calipers available are AP's or Harrop. Other than that check out the American sites. But for that cost you might as well change the whole lot.
To save you having a heart attack try finding the performance friction pads, or even the ones advertised on Pedders Uk.
John
, do you have the part number for the brake pads you are using that covers the full face of the standard disc. I dont want to change the stock standard rear set up, just pads that cover the full face which would also give better braking I would have thought. Thank you.
Ade
THUNDER STORM said:
John
, do you have the part number for the brake pads you are using that covers the full face of the standard disc. I dont want to change the stock standard rear set up, just pads that cover the full face which would also give better braking I would have thought. Thank you.
Ade
Hello Ade,, do you have the part number for the brake pads you are using that covers the full face of the standard disc. I dont want to change the stock standard rear set up, just pads that cover the full face which would also give better braking I would have thought. Thank you.
Ade
Sorry I don't have the part number as it was at least 4 years ago when I changed them. I just ordered a full set of pads front and rear from Monkfish. Don't forget, I had the standard 05 spec CV8 so the disc may have been slightly different.
mfp4073 said:
Hello Ade,
Sorry I don't have the part number as it was at least 4 years ago when I changed them. I just ordered a full set of pads front and rear from Monkfish. Don't forget, I had the standard 05 spec CV8 so the disc may have been slightly different.
Ade, I think the rear discs on your car are 315mm, the CV8 VZ disc on my car is smaller at 286mm, which would explain the unused area on your disc. I wonder if the rear 286mm would fit your VXR?Sorry I don't have the part number as it was at least 4 years ago when I changed them. I just ordered a full set of pads front and rear from Monkfish. Don't forget, I had the standard 05 spec CV8 so the disc may have been slightly different.
John
The unused disc area is not on the outer edge, but actually the inner portion closest the hub.
Changing to smaller discs would only leave the pad overhanging fresh air and definitely reduce braking performance!
Although the CV8 uses the same rear pads as the VXR, the fact the VXR uses bigger discs means the pads clamp the bigger discs further out if you like. This makes for stronger brake performance (leverage/basic physics). The VXR caliper simply has more material in it to allow it to be bolted further out. It works, but yes its a cheap lazy method, Holden/HSV should have used an entirely different setup for the HSV/VXR model.
300zx owners often bolt the larger 350z discs on there cars. They then use adaptor brackets to shift the caliper further out. The extra leverage gives better performance, but leaves a nasty unused area on the larger disc on the inside which like my VXR rears goes rusty and looks nasty.
Changing to smaller discs would only leave the pad overhanging fresh air and definitely reduce braking performance!
Although the CV8 uses the same rear pads as the VXR, the fact the VXR uses bigger discs means the pads clamp the bigger discs further out if you like. This makes for stronger brake performance (leverage/basic physics). The VXR caliper simply has more material in it to allow it to be bolted further out. It works, but yes its a cheap lazy method, Holden/HSV should have used an entirely different setup for the HSV/VXR model.
300zx owners often bolt the larger 350z discs on there cars. They then use adaptor brackets to shift the caliper further out. The extra leverage gives better performance, but leaves a nasty unused area on the larger disc on the inside which like my VXR rears goes rusty and looks nasty.
Edited by lincsls2 on Thursday 2nd August 08:52
lincsls2 said:
The unused disc area is not on the outer edge, but actually the inner portion closest the hub.
Changing to smaller discs would only leave the pad overhanging fresh area and definitely reduce braking performance!
Although the CV8 uses the same pads as the VXR, the fact the VXR uses bigger discs means the pads clamp the bigger discs further out if you like. This makes for stronger brake performance (leverage/basic physics). The VXR caliper simply has more material in it to allow it to be bolted further out. It works, but yes its a cheap lazy method, Holden/HSV should have used an entirely different setup for the HSV/VXR model.
300zx owners often bolt the larger 350z discs on there cars. They then use adaptor brackets to shift the caliper further out. The extra leverage gives better performance, but leaves a nasty unused area on the larger disc on the inside which like my VXR rears goes rusty and looks nasty.
IincsIs2Changing to smaller discs would only leave the pad overhanging fresh area and definitely reduce braking performance!
Although the CV8 uses the same pads as the VXR, the fact the VXR uses bigger discs means the pads clamp the bigger discs further out if you like. This makes for stronger brake performance (leverage/basic physics). The VXR caliper simply has more material in it to allow it to be bolted further out. It works, but yes its a cheap lazy method, Holden/HSV should have used an entirely different setup for the HSV/VXR model.
300zx owners often bolt the larger 350z discs on there cars. They then use adaptor brackets to shift the caliper further out. The extra leverage gives better performance, but leaves a nasty unused area on the larger disc on the inside which like my VXR rears goes rusty and looks nasty.
Thinking about it you are right, the CV8 disc isn't the way to go here. There just doesn't seem to be an easy way around this one.
It might be possible to get an oversized pad that would sweep the entire area, I know it was possible in the 300zx scene, but wouldn't know where to look with these cars.
I fear the AP kit is the only logical solution, especially if all your originals are ready for changing.
Last price I got was around £2200, supply only! But then consider you get 4 discs, 4 calipers and a full set of pads. I would guesstimate it would cost around £1200 to replace all the stock discs and pads, still leaving you with 15 year old calipers. And then the AP brakes will be superior in performance too.
I fear the AP kit is the only logical solution, especially if all your originals are ready for changing.
Last price I got was around £2200, supply only! But then consider you get 4 discs, 4 calipers and a full set of pads. I would guesstimate it would cost around £1200 to replace all the stock discs and pads, still leaving you with 15 year old calipers. And then the AP brakes will be superior in performance too.
lincsls2 said:
It might be possible to get an oversized pad that would sweep the entire area, I know it was possible in the 300zx scene, but wouldn't know where to look with these cars.
I fear the AP kit is the only logical solution, especially if all your originals are ready for changing.
Last price I got was around £2200, supply only! But then consider you get 4 discs, 4 calipers and a full set of pads. I would guesstimate it would cost around £1200 to replace all the stock discs and pads, still leaving you with 15 year old calipers. And then the AP brakes will be superior in performance too.
Strangely enough I've had full set of AP's fitted a couple of weeks ago. They are now fully beded in, but I have to say I'm not that impressed with them.I fear the AP kit is the only logical solution, especially if all your originals are ready for changing.
Last price I got was around £2200, supply only! But then consider you get 4 discs, 4 calipers and a full set of pads. I would guesstimate it would cost around £1200 to replace all the stock discs and pads, still leaving you with 15 year old calipers. And then the AP brakes will be superior in performance too.
Under hard braking they are powerful enough, but around the town you wouldn't know they were fitted. The brake pedal seems softer than with my old standard brakes.
I had my AP's fitted by Walkinshaw's, so I left a message and sent them an e-mail last week, as I wanted to check a few things with them. I'm still waiting for a reply.
Oh right. That's interesting. What was the fully fitted price? £2600?
Anyway, at over £2k I'd be wanting to be impressed! I fitted a front K-sport 330mm kit to my old 300zx many years ago and I was impressed. They had the front tyres begging for mercy when used in anger!
Keep us posted on this, see if WP can come up with anything for you.
Anyway, at over £2k I'd be wanting to be impressed! I fitted a front K-sport 330mm kit to my old 300zx many years ago and I was impressed. They had the front tyres begging for mercy when used in anger!
Keep us posted on this, see if WP can come up with anything for you.
mfp4073 said:
Strangely enough I've had full set of AP's fitted a couple of weeks ago. They are now fully beded in, but I have to say I'm not that impressed with them.
Under hard braking they are powerful enough, but around the town you wouldn't know they were fitted. The brake pedal seems softer than with my old standard brakes.
I had my AP's fitted by Walkinshaw's, so I left a message and sent them an e-mail last week, as I wanted to check a few things with them. I'm still waiting for a reply.
I wonder if your problem is a race spec pad compound that just doesn't get up to temperature under normal road conditions?Under hard braking they are powerful enough, but around the town you wouldn't know they were fitted. The brake pedal seems softer than with my old standard brakes.
I had my AP's fitted by Walkinshaw's, so I left a message and sent them an e-mail last week, as I wanted to check a few things with them. I'm still waiting for a reply.
lincsls2 said:
Oh right. That's interesting. What was the fully fitted price? £2600?
Anyway, at over £2k I'd be wanting to be impressed! I fitted a front K-sport 330mm kit to my old 300zx many years ago and I was impressed. They had the front tyres begging for mercy when used in anger!
Keep us posted on this, see if WP can come up with anything for you.
The cost of the AP's, £1642.85 + vat at £328.57. The labour charge was about £365.00 inc vat, add a couple of track rod ends to fit myself, came to £2,384.22.Anyway, at over £2k I'd be wanting to be impressed! I fitted a front K-sport 330mm kit to my old 300zx many years ago and I was impressed. They had the front tyres begging for mercy when used in anger!
Keep us posted on this, see if WP can come up with anything for you.
I spoke to Walkinshaw's today, and they assured me that the front calipers were drilled out correctly, ( 05 CV8 only ) which is a relief.
I also ordered a couple of bottles of AP brake fluid, as I was advised to bleed the brakes as they are now finally beaded in.
Hopefully that will sort the job out.
ARAF said:
I wonder if your problem is a race spec pad compound that just doesn't get up to temperature under normal road conditions?
I think the AP pads will be OK TBH, yes, they do work better with a little heat in them, but hot or cold they left me thinking the standard brakes on my wife's Mini are better around town.!!!!Gassing Station | HSV & Monaro | Top of Page | What's New | My Stuff