TVR S2 Rear discs

TVR S2 Rear discs

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Top Gear TVR

Original Poster:

2,203 posts

103 months

Monday 4th June 2012
quotequote all
I am contemplating a set of rear discs on the 2.9 v6.

Has anyone done this? can it be done with simply fitting chimp or sierra parts? do drive shaft need machining?

The Big G

895 posts

117 months

Tuesday 5th June 2012
quotequote all
Its been done before by others (if only the search was working!), you'll need to replace rear hubs so that there is the correct mount for the caliper.

These look like the parts that you require but I am not 100% confident. I'm sure someone else who knows more will be along in no time to say for sure. The add states they are from a Sierra 4x4 but I'm not sure if there were any differences on the sierra to the non 4x4 models with rear disks. Get them refurbed then bolted on. You'll also need a new hand brake cable, racetech now stock one for the V8s which should be correct for you too. Its just a shortened Sierra cable though.

Edited by The Big G on Wednesday 6th June 08:50

phillpot

15,457 posts

132 months

Wednesday 6th June 2012
quotequote all
The Big G said:
you'll need to replace rear hubs so that there is the correct mount for the caliper.
When I did mine I bought calipers, disc's and hubs from A guy who was up-rating his Griffith so I knew they'd be right!

Didn't use the hubs in the end though because it involves different bearings and/or some machining I think. Instead I used a pair of caliper mounting brackets from "3GE Components", they sell a lot of kit car stuff. Couldn't have been easier, they just bolt on in place of the brake back plate. Only difference is I think "standard" set up puts the caliper at 12 o'clock (top of the disc), with these its either 3 or 9 o'clock.

You'll also need two more flexi brake pipes, from trailing arm to caliper.

V8S hand brake cables don't come cheap but Sierra/Granada ones do so I shortened one of them wink






As you can see I went for the solid disc's (253 x 10mm), later Griffs and Chims had vented (273 x 20mm)

www.brakesint.co.uk is an excellent reference site (and their prices are pretty good), they give all the dimensions so you just keep searching various Sierras till you find what you want.
Solid disc is XRi 4x4 and vented are Cozzie 4x4 (but check, don't take my word for it).

Edited by phillpot on Wednesday 6th June 22:36

Top Gear TVR

Original Poster:

2,203 posts

103 months

Thursday 7th June 2012
quotequote all
Phillpot - Very useful, what if any difference did you notice having done the work?

phillpot

15,457 posts

132 months

Thursday 7th June 2012
quotequote all
Top Gear TVR said:
what if any difference did you notice having done the work?
They look good through the wheels ....getmecoat


Had no issue with the drums, I believe they are more than up to the job for normal road use. It was a nice little project though, keeps me amused wink

The Big G

895 posts

117 months

Sunday 10th June 2012
quotequote all
phillpot said:
Didn't use the hubs in the end though because it involves different bearings and/or some machining I think. Instead I used a pair of caliper mounting brackets
Phillpot, out of curiosity do you know which parts need to be changed/machined? Is this because a vanilla hub won't fit our trailing arm's. Are the different bearings due to different drive shafts. Just curious in case I ever need to replace my hubs or bearings in the future.

phillpot

15,457 posts

132 months

Sunday 10th June 2012
quotequote all
The Big G said:
Phillpot, out of curiosity do you know which parts need to be changed/machined?
There was a very good thread on this a while ago, written by someone who bought the bits from a guy called Hans in Holland makes up conversion kits using all new or reconditioned parts.

you may find it if the search is working.I took a print of it from which I'll summerise.......

Kit includes:

Rear calipers (from Granada Cosworth and possibly others)
273 x 20 vented discs
Brake pads
2 Cosworth bearing carriers
2 new wheel bearings (bigger than original) maybe that should be 4 ?
2 drive shaft ends (Cosworth)
2 wheel flanges (4 stud, later were 5 stud)

It goes on to say, Three points to consider....

1 Drive shaft ends are turned down (to fit through trailing arms)
2 You will need to fabricate a small "L" bracket for the additional flex pipe from caliper
3 You will need a different handbrake cable



HTH Mike

Edited by phillpot on Sunday 10th June 11:11

Top Gear TVR

Original Poster:

2,203 posts

103 months

Sunday 10th June 2012
quotequote all
cheers mike - i am still on with the fronts but have an lsd to fit. I am tempted to do this rear disk conversion at the same time, probably september i recon.

mikel003003

1,084 posts

115 months

Monday 11th June 2012
quotequote all
Can anyone provide a link to the bracket from 3ge components I can't seem to navigate there site

phillpot

15,457 posts

132 months

Monday 11th June 2012
quotequote all
Not the 3Ge one (site under construction?) but same idea, third item down........

clicky

mikel003003

1,084 posts

115 months

Monday 11th June 2012
quotequote all
yes thats it thanks, did you have to remove the hubs then, how was that ?

mikel003003

1,084 posts

115 months

Monday 11th June 2012
quotequote all
does it remove the need for the caliper slider/hanger? ive been talking about doing this for years, think im gonna have a busy winter

phillpot

15,457 posts

132 months

Tuesday 12th June 2012
quotequote all
mikel003003 said:
yes thats it thanks, did you have to remove the hubs then, how was that ?
It was good for me !
Other people have put the space saver on and leave the wheel on the ground to hold it while undoing the big nut.

You'll still need the caliper carrier/slider






The brackets replace these....



Edited by phillpot on Tuesday 12th June 06:52

mikel003003

1,084 posts

115 months

Tuesday 12th June 2012
quotequote all
Brilliant !

The Big G

895 posts

117 months

Friday 15th June 2012
quotequote all
phillpot said:
There was a very good thread on this a while ago, written by someone who bought the bits from a guy called Hans in Holland makes up conversion kits using all new or reconditioned parts.

you may find it if the search is working.I took a print of it from which I'll summerise.......

Kit includes:

Rear calipers (from Granada Cosworth and possibly others)
273 x 20 vented discs
Brake pads
2 Cosworth bearing carriers
2 new wheel bearings (bigger than original) maybe that should be 4 ?
2 drive shaft ends (Cosworth)
2 wheel flanges (4 stud, later were 5 stud)

It goes on to say, Three points to consider....

1 Drive shaft ends are turned down (to fit through trailing arms)
2 You will need to fabricate a small "L" bracket for the additional flex pipe from caliper
3 You will need a different handbrake cable



HTH Mike

Edited by phillpot on Sunday 10th June 11:11
Many thanks for taking the time to write that out for me, it is all good info to know. I know of Han and his kits but I don't remember reading the tread on the subject.

Many thanks again

Gordon



The Big G

895 posts

117 months

Friday 15th June 2012
quotequote all
phillpot said:
It was good for me !
Other people have put the space saver on and leave the wheel on the ground to hold it while undoing the big nut.

You'll still need the caliper carrier/slider


One of these



With a 41mm (I think) impact socket will also take it off easily but will make quite a bit of noise! My 1m breaker bar wouldn't budge it.

phillpot

15,457 posts

132 months

Tuesday 19th June 2012
quotequote all


Forgot to mention....

With the calipers mounted at "9 o'clock" the handbrake cable is at the top, this is good but the bleed nipple is at the bottom. not so good.

They could be fitted at "3 o'clock" putting nipple at top, good, but handbrake cable is now at the bottom, hanging down very low, not good.

I went for nipple at bottom, this just means that to bleed the brakes (not something that should need doing too often) I un-bolt the calipers and slide them round still on the disc to "12 o'clock".

Reminded myself of this this evening when I came to bleed the brakes after fitting my shiny stainless balance valve bracket, photo's to follow soon !

mikel003003

1,084 posts

115 months

Tuesday 19th June 2012
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Thanks Mike, that's good to know there seem to be plenty of calipers around just waiting for an e bay bargain !

Sssline

372 posts

169 months

Thursday 26th July 2012
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Hi,
I noticed in the pics above that you have used new cable end, on one end, I assume to shorten, just wondered were this was sourced from?

Thanks
Tony.R

phillpot

15,457 posts

132 months

Thursday 26th July 2012
quotequote all
Sssline said:
just wondered were this was sourced from?
This one ? I made it.