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Triumph Torque    Cars    Herald/Vitesse  ›  needing help with a 948 brake conversion
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needing help with a 948 brake conversion Print
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StevieK
December 22, 2017, 12:12am Report to Moderator

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Hi could anyone advise what donor parts would fit a 948s herald im wanting to convert to disc brakes on front but im abit green around the gills. Would any other herald be a straight fit (hoping) thnaks in advance.
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thescrapman
December 22, 2017, 7:21am Report to Moderator

Colin Wake
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All Heralds and Spitfires will supply all the parts you need.

The joys of a large common parts bin.

I would go for type 14 calipers so best sourced from later 1200 or any 13/60 Herald or mk3 mk4 or 1500 Spitfire


Schadenfreude expert and collector of assorted rusty Triumphs on the Essex/Suffolk Border.

2010, 2011, 2013, 2015 and 2016 CT Navigators Championship winner.

10CR 2005, 2007, 2009, 2011 2013 2017 - RBRR 1990, 2006, 2008, 2010, 2012, 2014, 2016 - Nachtrit 2006, 2007, 2008, 2009, 2012 - Chinese rally 2007, 2008, 2009, 2010, 2011 - HCR 2009, 2011, 2012, 2013 (3rd place), 2014. 2015, 2017

On the road.
1968 Spitfire Mk3 : 1973 TR6 : 1967 Herald 1200 Estate 1970 : 1968 Mk1 2.5PI 1968
Off the road
1967 Moss Monaco (Mk1 GT6 based) : 1970 Spitfire Mk4 : 1970 Mk2 2000 auto  : 1964 Mk1 2000  : Mk2 2.5PI
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StevieK
December 22, 2017, 9:39am Report to Moderator

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Many thanks, nice little job for after Christmas. Thanks again Steve
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cliftyhanger
December 22, 2017, 10:25am Report to Moderator

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To add to Colin's comment, the easiest way by far is to get the complete vertical link straight off a car. That way you will get the hubs/stub axle/disc and calipers. The later cars have the calliper carrier cast into the vertical link. If you get the parts to convert yours the separate calliper bracket can be difficult and expensive to source.Plus I think there can be issues with hub/calliper clearances, a search may throw that up (I can't remember the details, except it is sort of 50/50 if there will be an issue)


Clive Senior

Location-Brighton, East Sussex
Foxy is here, 1500od tax exempt Toledo. Now has the decent engine back in Slant 4 engine bolted in, sprint box and axle.Now has fresh MoT. Needs paint though.
Spitfire Zetec project is started work progressing slooooowly on the road!
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StevieK
December 22, 2017, 7:50pm Report to Moderator

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Many thanks Clive
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Casper
December 23, 2017, 8:57am Report to Moderator


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And you need to increase the volume of the brake master cylinder.  Either buy an extension (e.g. http://www.burtonpower.com/gir.....ers-gir64475476.html or https://www.demon-tweeks.co.uk.....-extension-reservoir) or change to a later master cyclinder.
C.


Herald Anorak
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StevieK
December 24, 2017, 11:03pm Report to Moderator

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Many thanks Casper, hope everyone has a great Christmas
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TedTaylor
December 24, 2017, 11:16pm Report to Moderator

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Or leave it as it is and have even more fun ...............

I used to rally a 948 Herald in the late 1960s around the Cotswolds and the Forest of Dean.  We had a great time even if it became a little hairy in the braking stakes at times  

MUT


Mad Uncle Ted!
Growing old is inevitable but growing up is optional.

AFH849B Mk1 2000 period rally replica (under restoration ..... again) First re-built 1991
NAM616G Morris 1800 London Sydney/Monte/World Cup (awaiting restoration)
SCG115G Mk1 PI estate
WDE 76K Mk2 2500 estate (Woodie) RBRR 2014   2016  
LSE Soft Dash Range Rover with Brooklands body kit on LPG (Still for sale)

From the depths of the Forest of Dean....
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Pete Lewis
December 25, 2017, 11:07am Report to Moderator

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and the chamfer on the 984 hub will be as cast  with type 14s you need to have it machined a bit clearer of attack with the grinder or its most likely going to foul on the caliper.
Pete



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1964 1600 Vitesse 6 Cactus and Black , now  sold
now have T2000   Mk2 saloon in French Blue/grey trim  been  restored without running since 1997
now has power steering ,poly bushed and Alfa 156 seats
location  Luton
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StevieK
December 25, 2017, 12:43pm Report to Moderator

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To be honest Ted, I Like the car are getting too old to be rushing around. Im beginning to think it would be better to leave her as she is,  I will just make sure the brakes are fit for purpose. all the best Steve
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Bitumen Boy
December 25, 2017, 12:57pm Report to Moderator
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Actually I'd say it's the most worthwhile thing you can do. IMO front drum brakes aren't really fit for purpose on any car, especially given modern traffic and road conditions - there can't be many Heralds left that haven't been changed to discs and there's a reason for that.
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Mark Hammond
December 25, 2017, 4:25pm Report to Moderator

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I beg to differ.  My 1965 1200 has drums all round and adjusted correctly they work fine and within the limits of the power available.  I’d only upgrade if you are uprating the power available.

Mark


Herald 1200 Saloon, owned (in the family) from new, Royal Blue/Black trim
[color=purple]MX-5 Z-Sport (Tweaked to 200bhp)2007,
Suzuki Vitara S Auto, Cosmic Black, 2017.
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TedTaylor
December 25, 2017, 9:04pm Report to Moderator

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My early driving in the 1960s was drum braked and apart from when hoolying around rallying and one incident with the drum brakes on my early Morgan Plus4 I had little problem.

I eventually fitted the latest spec (for the late 60s/early 70s) linings and that did a lot to sort out the problem.  The problem with the Morgan was that it had had the early Vanguard engine swapped for a TR engine and the early 7" wide spec +4 front brakes designed for the Vanguard application were simply not up to it - later ones had 8" shoes with a disc option until it became standard later on.

In other words, uprated lining Herald drums with a 948 engine coped OK.  However as Mark pointed out the problem comes when you uprate the engine performance but not the anchors as I did with my Morgan .......  

I am not saying that disc brakes are not necessary, but as Mark says it does depend on what you are expecting your drum brakes to do.

MUT


Mad Uncle Ted!
Growing old is inevitable but growing up is optional.

AFH849B Mk1 2000 period rally replica (under restoration ..... again) First re-built 1991
NAM616G Morris 1800 London Sydney/Monte/World Cup (awaiting restoration)
SCG115G Mk1 PI estate
WDE 76K Mk2 2500 estate (Woodie) RBRR 2014   2016  
LSE Soft Dash Range Rover with Brooklands body kit on LPG (Still for sale)

From the depths of the Forest of Dean....
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Pete Lewis
December 25, 2017, 9:34pm Report to Moderator

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From previous posts arent the front shoes hard to find now

pete


1964 1600 Vitesse 6 Cactus and Black , now  sold
now have T2000   Mk2 saloon in French Blue/grey trim  been  restored without running since 1997
now has power steering ,poly bushed and Alfa 156 seats
location  Luton
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Bitumen Boy
December 26, 2017, 3:02pm Report to Moderator
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My experience of front drums is that they need constant cleaning and adjusting - like every weekend constant - if they're to work at all, I can't speak about them working well as that's something I never achieved. Discs work better and need a lot less maintenance so it's a no brainer for me - discs every time.
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