Caliper & Brake disc question
Caliper & Brake disc question
Author
Discussion

sk7ine man

Original Poster:

604 posts

221 months

Sunday 1st November 2009
quotequote all
Are the 4.2 & 4.5 calipers the same?

I know the 4.5 has larger discs, if the calipers are the same is the caliper mounted by means of a spacer of a different hub assembly?

A little confused by this as i know the 4.2 discs arent available and will be looking at various alternatives in the future when it comes to changing the them.

Any info as to the various combinations of caliper/hub/discs on the model range would be appreciated (search facility is down at the mo).

high52kojak

505 posts

227 months

Sunday 1st November 2009
quotequote all
I've just done my front brakes so I've done a bit of reading on them, upgraded to 330mm disk and carbone lorraine pads (thanks Brummie).
The caliper on the 4.5 has six bolts ( not including the pad retainer) and the 4.2 has four.
The 6 bolt caliper can take a slightly bigger disk, about 343mm dia max I think, the 4 bolt variety up to 330mm I think, well my friends Tuscan has the 4 bolt caliper and he has 322 cerb disks in and there is still a bit of clearance bewteen caliper and disk.

sk7ine man

Original Poster:

604 posts

221 months

Sunday 1st November 2009
quotequote all
high52kojak said:
I've just done my front brakes so I've done a bit of reading on them, upgraded to 330mm disk and carbone lorraine pads (thanks Brummie).
The caliper on the 4.5 has six bolts ( not including the pad retainer) and the 4.2 has four.
The 6 bolt caliper can take a slightly bigger disk, about 343mm dia max I think, the 4 bolt variety up to 330mm I think, well my friends Tuscan has the 4 bolt caliper and he has 322 cerb disks in and there is still a bit of clearance bewteen caliper and disk.
Super thats all i needed to know. So they are different calipers?! The pads they take i assume are the same?

Any recommendation as to suppliers for discs that will fit the 4.2 four bolt caliper?

high52kojak

505 posts

227 months

Sunday 1st November 2009
quotequote all
Yep different caliper.
Not sure about pads but probably different, as for disc suppliers try the usual Clever Trever and RG etc. As I kept to separate disk/bell set-up these places dont supply them anymore, just the later one piece replacements so I got mine from BG Developments.

BlueCerbera

71 posts

270 months

Tuesday 10th November 2009
quotequote all
high52kojak said:
Yep different caliper.
Not sure about pads but probably different, as for disc suppliers try the usual Clever Trever and RG etc. As I kept to separate disk/bell set-up these places dont supply them anymore, just the later one piece replacements so I got mine from BG Developments.
high52kojak, I've just started looking at options for front disk replacement for my 4.5 Cerb. What part did you ask for at BG Developments, or did you have something custom made? I assume the only other choice is the 1 piece 322 disk.

Brummmie

5,284 posts

251 months

Tuesday 10th November 2009
quotequote all
Pads are the same shape.

CL numbers are 5004w50t17.

Pad shape is 5004, the depth of track is w50, and the thickness is 17mm t17.


Byker28i

91,813 posts

247 months

Tuesday 10th November 2009
quotequote all
Isn't there two sizes for 4.2 disks? 291mm and 304mm

Racing Green have 291mm at £195
http://www.thetvrshop.com/ProductsDetail.asp?PartN...

and 304mm at £126
http://www.thetvrshop.com/ProductsDetail.asp?PartN...