Front brake discs / bells / calipers - clarification thread

Front brake discs / bells / calipers - clarification thread

Author
Discussion

GT4 Baz

627 posts

184 months

Monday 11th January 2010
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I have these callipers on my 96 4.2 at the moment and will need some new discs in the not too distant future.

Can some one kindly calrify where I can get the 330mm discs and calliper brackets from please?

Many thanks!

Barry

Nickccc

1,682 posts

247 months

Monday 11th January 2010
quotequote all
How much stud length do you have protruding through that bell ?
Maybe it's just the angle of the photo, with the wheel on will the wheel
nut have enough to bite onto? If it is as short as it looks you may have problems.
Hopefully it's just the camera angle, but looks short.

Byker28i

58,868 posts

216 months

Monday 11th January 2010
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Realistically, is there a market for a kit for this? I'd certainly be interested.

RichV6

383 posts

206 months

Monday 11th January 2010
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To answer a few questions, all I have done is follow a couple of threads on here. Jools AKA spitfire4v8 (trackcar) supplied the bells which I believe are the same as fitted to early 4.5 Cerbs. The calipers came from Ebay via Reyland Motorsport and are new. R8nan kindly had the spacers machined for me. All other parts came from BG Developments. Not counting the odd bolts replaced on the way the cost was just over a grand. This was using AP componants throughout. Cheaper discs are available.



I'm afraid the old calipers are bound for a new life on another car when overhauled.

The photo is not clear, the studs are the standard length as the new bells are the same thickness as the old disc hub.


Edited by RichV6 on Tuesday 12th January 09:40

GT4 Baz

627 posts

184 months

Monday 11th January 2010
quotequote all
I have just been talking to a friend that does brake upgrades on several different cars, he has suggested a Porsche 6 pot upgrade with 355mm discs.

He is looking at getting a Cerbera shortly, I was only asking about him getting some calliper brackets made up! Haha!

I'll take mine to get measured up, would anyone else be interested in such a kit?

Brummmie

5,284 posts

220 months

Monday 11th January 2010
quotequote all
All you need is proper pads and fluid, but you cant beat a bit of bling behind your rims!

Omerta

2,009 posts

250 months

Monday 11th January 2010
quotequote all
Brummmie said:
All you need is proper pads and fluid, but you cant beat a bit of bling behind your rims!
Maybe true if you're starting with 4.5 calipers and discs wink

GT4 Baz

627 posts

184 months

Monday 11th January 2010
quotequote all
Omerta said:
Brummmie said:
All you need is proper pads and fluid, but you cant beat a bit of bling behind your rims!
Maybe true if you're starting with 4.5 calipers and discs wink
Exactly! The 4.2 stops well but could be better!

Incognegro

1,560 posts

132 months

Wednesday 7th October 2015
quotequote all
900T-R said:
If anyone got a pair of 4.2 callipers going spare I'd be interested - for development purposes. smile
Resurrection I soon will have mate but I'll be getting rid of the complete set up calipers (painted black/red logo), CL5 pads (less than 6k miles) Reyland 2piece 304mm J hooked discs with black bells. PM if still interested

I'm soon to be doing the CP6600 calipers upgrade to my 2000 sp6 cerbera but have heard they can accept a 350mm disc so will be getting them painted red and some 350x28 discs to put behind my 18" SP12s

Incognegro

1,560 posts

132 months

Tuesday 29th December 2015
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The 350x30 discs finally made it on the cerbera smile

Incognegro

1,560 posts

132 months

Friday 8th January 2016
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Finally done it! Thanks Dom and Power... Pain in the a*** but well worth it!



I can't recommend this enough. Ok still 4 pots compared to Hi Specs 6 bug these 6600 are mega. I maxed them with 350x30 discs (curved groove taken to edge) and for anyone wanting to stay as close to original TVR and remain with the AP Prestige go this way. For now they have some AP pads but at next change I may match up to my rears with CLs. Absolutely love them!

Y194 ODX

44 posts

172 months

Saturday 9th January 2016
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The best solution I have seen so far. The only thing that wonders me is that AP itself seem to specify the CP6600 calipers for 330 mm discs. Discs by Reyland?

Incognegro

1,560 posts

132 months

Saturday 9th January 2016
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Discs by reyland me and Martin had a nice convo about this as the guys at power stated the same thing from AP but I assume it's to do with a correctly sized bell so pad swept area is spot on. 55mm pad radial depth in my case (again the max wink )

All I can say is so far so awesome

purpleliability

627 posts

184 months

Tuesday 19th January 2016
quotequote all
That looks perfect! So are the calliper spacers available for Power now? I already have the alloy bells, just fancy a larger disc when I need to replace them.

Thanks!

Incognegro

1,560 posts

132 months

Wednesday 20th January 2016
quotequote all
Power did make me spacers for me but be warned you mat need the correct sized bell if you go larger as it's also about keeping the pad contact area correct to avoid warping.

I may have misunderstood your post but in answer to question power should be able to make you the correct spacers (or at least tell you need)

HTH

purpleliability

627 posts

184 months

Wednesday 20th January 2016
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Ok, that makes perfect sense. I have the Tuscan S bells, do you have the measurements of your brake disc bell so I could compare please? Thanks!

Incognegro

1,560 posts

132 months

Wednesday 20th January 2016
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Wish I did but never got took them down as all came as one pre fitted. My discs are 350 and pad radial depth is 55mm then allow maybe 2/3mm to the bell??? With that said I have a figure left of 292?

Not sure if thats best way to calculate how it all works but may be a rough guide??

purpleliability

627 posts

184 months

Wednesday 20th January 2016
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That'll do, thanks!

I'll measure up this weekend. So the pad fits the disc perfectly, using the full pad and disc are now right?

Thanks again

FarmyardPants

4,099 posts

217 months

Wednesday 20th January 2016
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Incognegro said:
Wish I did but never got took them down as all came as one pre fitted. My discs are 350 and pad radial depth is 55mm then allow maybe 2/3mm to the bell??? With that said I have a figure left of 292?

Not sure if thats best way to calculate how it all works but may be a rough guide??
Or 350mm diameter disk = 175mm radius.
Minus 55 = 120mm radius.
Subtract another 2mm = 118 radius (so 236mm diameter) bell.

smile

Incognegro

1,560 posts

132 months

Thursday 21st January 2016
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All sitting perfectly and stopping is awesome not to mention no noise hoping its due to disc design and will be the same when i go back to using CLs on the front.

Farmy sounds right... I think again I'm no expert so left it to the pros lol