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Author: Subject: Sierra rear brake calipers - lightweight options
cosmicicecreamman

posted on 31/12/19 at 12:59 PM Reply With Quote
Sierra rear brake calipers - lightweight options

Hello all,

I'm looking to reduce the unsprung mass at the rear of my Sylva Riot. It currently runs sierra rear discs and calipers. It doesn't require any more breaking force at the rear, just looking for weight reduction.

Does anyone know of an easy and financially more favourable option for lightweight rear calipers rather than 4 pot options? Or any other ways to reduce the unsprung mass at the rear?


Many thanks


Stephen

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SPYDER

posted on 31/12/19 at 01:32 PM Reply With Quote
Hi Stephen. There's a Golf caliper that fits. MkIV I think. I'm not sure what wheel/disc size is required. Get googling. Thinner discs is another option.
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big_wasa

posted on 31/12/19 at 01:54 PM Reply With Quote
Mk1/2 Mx5 on little fiesta discs, they are tiny.
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cosmicicecreamman

posted on 1/1/20 at 11:44 AM Reply With Quote
Excellent!!! Cheers chaps, will have a look at the mk4 golf options firstly. I'm running 13" wheels so maybe a bit tight. If that doesn't work I'll have a look at the MX5. At least both are readily available.

Thanks

Stephen

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big_wasa

posted on 1/1/20 at 01:20 PM Reply With Quote
If you do a search for the user name Daf there are a few posts on a conversion he did. They easily fit under 13s
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fregis

posted on 2/1/20 at 09:14 AM Reply With Quote
Like said before, can change only calipers to golf, peugeot, alfa romeo, audi, or other ( they are all similar just handbrake ant pipe location different), dont need change carier, pads.

i used peugot caliper and sierra other parts. maybe i will take photo later

two things more:
Have different piston sizes, so choose.
Need make one groove in caliper for sierra pads springs

if you use all parts from golf or audi, calipers have offset +10mm for bigger diameter brakes


[Edited on 3/1/20 by fregis]





Never be afraid to do what you are insolvent, remember: amateurs built the ark - Professionals built the Titanic.

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cosmicicecreamman

posted on 8/1/20 at 12:13 PM Reply With Quote
So...

I purchased a set of VW Golf MK4 aluminium rear brake calipers from my local scrappy and they fit the Sierra carriers. My 13" wheels fouled the callipers so a little assistance with the grinder to the calipers casting and they fit - I've not taken a huge amount of material off.

The VW Golf MK4 aluminium rear brake calipers were approx. 1 - 1.5kg lighter than the cast Ford Sierra rear brake calipers I had on already.

I've also purchased a set of these aluminium bearing carriers so hopefully lose a bit more unsprung mass at the rear of the car:

http://berrisford.co.uk/index.php/alloy-bearing-carrier-sierra.html


Thanks for the help and advice gentlemen.


Stephen

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big_wasa

posted on 8/1/20 at 12:48 PM Reply With Quote
Are these the ones that require the hubs turning down a bit and escort discs ?
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cosmicicecreamman

posted on 8/1/20 at 06:33 PM Reply With Quote
quote:
Originally posted by big_wasa
Are these the ones that require the hubs turning down a bit and escort discs ?


They bolted straight on, like I said the calipers needed dressed with a grinder to clear the wheel but no issue with clearing the hub or the disc.

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big_wasa

posted on 8/1/20 at 07:16 PM Reply With Quote
Ok thanks,

RallyDesign did / do a kit that was reported to be vag calipers on Escort discs. The hubs need turning down to get the discs on.

I wondered if it was the same.

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