maybe a silly question but apart from solid or vented discs whats the difference between coworth 2wd and 4wd rear callipers can you use 2wd callipers on a vented disc cheers

 

the reason i ask is they look identical cheers

 

a 2wd rear calliper will only take a solid disc but you can fit a 4wd calliper to a 2wd car for the vented disc if you wish .

 

The gap on 4x4 calipers are wider/bigger than on 2wd because the vented disc are a little bit wider than the solid ones. Therefore you can't use 2wd calipers on vented discs, but you can fit 4x4 calipers on a 2wd car since the bracket, bolt holes etc. are the same.

 

how can u tell if you r buying 4wd callipers as they look the same a 2wd is there any differance by lookin at them cheers

 

Best way is to measure but I don't know the actual measurements!!
tabetha

 

Solid disc (2wd) is 10mm.

Vented disc (4x4) is 22mm.

So the carrier will be the just a bit bigger than the above widths - that is the only difference .

 

when you say carrier do you man the bracket that the calliper bolts to if so could i just get a set of brackets and use my existing callipers as they have recently been refurbed cheers

 

They are not sold seperately, but yes if you could find some.

 

You can't use a 2wd caliper on a vented disc, as it will not be wide enough, even if the carrier is, vented disc need vented type calipers, as I said don't know the actual width of the caliper, but as said disc width is as above but doesn't help if you don't know what either one or both are width wise.
I am sure someone will measure one and post up.
tabetha

 

reading what you've written mike, you seem to be suggesting that the 2wd caliper will fit over the 4wd disc with a 4wd bracket
it won't mate, not when you have to put pads in there as well

i've got a spare one at home somewhere i'll measure up to give you dimensions if they are needed

 

I forgot about the pads, as it looked like it would fit no bother .

So in answer to the question, you HAVE to buy 4x4 calipers to fit vent discs

 

if you have a look at this picture youwill notice 2 arrows

the red one and the yellow one

these are for the normal 2wd cars (even though it's not a cossie you get the point)

the red arrow indicates the width of the carrier where the disc sits in and teh caliper bolts on to
this gap will be 12mm or so on the 2wd cars and 22mm or so on the 4wd cars

the yellow arrow indicates the width of the caliper and the total retracted piston width includes the thickness of the pads as well as the disc
on the 2wd cars this will be the thickness of the disc (10mm) plus the thickness of the pads (another 10mm each) so it will be approx 30mm give or take
if it were the 4wd variant this would be wider by another 10mm at least to account for the extra width of the disc

i hope this clears up any confusion left at the end of this matter

unless someone needs to see a 4wd caliper next to a 2wd caliper?