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Triumph Torque    Chit Chat Boards    Technical Chit-Chat  ›  Brake caliper upgrade?
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glang
July 13, 2017, 5:58am Report to Moderator

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It looks like later TR6 brake calipers (14pbm?) use diiferent pads from the standard type 14s used on many other small chassis cars so are they a possible upgrade for these vehicles?
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Davemate
July 13, 2017, 9:46am Report to Moderator


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I wouldn't class a TR6 as a "small chassis car" I would have thought the compleat drive train would be more like the 2000/2500 saloon spec


Herald 1500,rallyfied- overdrive,swing spring with 1500 spit diff,440lb front springs, adjustable height spax on front and back, trunionless conversion,thicker arb,rear roll cage,harnesses,bucket seats,extra gauges,Vitesse steering wheel,genuine 5.5j smoothies wheels,4 branch manifold
Still for sale

Mk1 2000 saloon,now a 2.5   

Timing marshal CT autosolo Bovington 2011,2012,half of 2013,2014 and 2016
Marshalled Essex winter rally 2013
RBRR 2012, co driver
24th Nachtrit 2012, navigator
Chinese rally 2013, navigator
Essex winter rally 2014, navigator
HCR 2014, co driver
RBRR 2014, co driver
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Warwickshire winter rally 2016,driver
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glang
July 13, 2017, 10:10am Report to Moderator

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no sorry I meant using late model TR6 calipers on small chassis cars like GT6 and Vitesse which I believe as standard have the same 14 calipers as the early TR6s.....
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JumpingFrog
July 13, 2017, 10:48am Report to Moderator

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Quoted from glang
no sorry I meant using late model TR6 calipers on small chassis cars like GT6 and Vitesse which I believe as standard have the same 14 calipers as the early TR6s.....


I think you mean Type 16 calipers. The PBM ones can be used IIRC, but as they are metric you need special bolts.

See:
https://www.canleyclassics.com/suspension-steering-and-brakes/brake-calipers/
http://club.triumph.org.uk/cgi-bin/forum10/Blah.pl?m-1334360151/


1971 Herald 13/60 Saloon - Just about on the road.
1967 Herald 1200 Estate - Rebuild in progress, just about rolls.
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glang
July 13, 2017, 11:33am Report to Moderator

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another mistake! Im having a bad day today....
Just wondered if theres any advantage in having the later type 16 calipers as there is a difference in the respective pads:



This post contains attachments; to download them you must login.

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GT6 M
July 13, 2017, 9:18pm Report to Moderator

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bottom pad is actually better for even wear rate
as laaler inner area goes where,t slower mov,n disc is

Butt, top pad es,a gas vent slot init


M


One does not have to know how a thing works, to know that it is not working right

Ye div,nt efta no ooa thing wuks, t,no its nut wuk,n reet.







Scaryport,��Cumbria,.
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glang
July 13, 2017, 10:53pm Report to Moderator

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Dont you think theres more friction area on the later TR6 pad so giving improved braking M? I know it seems easier to find mintex 1144 pads for these...
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JohnD
July 14, 2017, 8:51am Report to Moderator


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Friction is a slippery subject!

The force resisting motion (due to friction) depends on the coefficient of friction for those surfaces, and the force squeezing them together.  You'll note, no mention of surface area!

If that force is your foot on the brake pedal, assume its constant.    Now vary the surface area of the pads.    If they are smaller, the squeezing force, per square inch, is greater if your foot exerts the same pressure.   And the other way around, bigger pad, less force.   The friction of pad on disc stays the same.

John


Serial Vitesse racer.

Old Blue.  1995-2001
Silverback. 2001-2007
SofS. 2007 - to date.

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glang
July 14, 2017, 2:32pm Report to Moderator

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I see what your saying John so possibly when Triumph changed the TR6 calipers they may have also changed some other brake system components to benefit from the larger pad area.
However it would be interesting to see what effect it would have putting the later calipers on a Vitesse for example and I wonder if anyone has done it....
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Pete Lewis
July 15, 2017, 6:56pm Report to Moderator

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2 ltr vitesss and gt6 all use a type 16 or 16pb caliper  you cant fit 16 to a car  with type 14 as the mounting bolt centres are a tad different  you need the caliper mount to match, and they are hard to find

1600 used type12 and any upgrade is worthwhile

from memory the master cyl was 5/8" on type 14  and 0.7 of type 16  with or without servo.


1964 1600 Vitesse 6 Cactus and Black , now  sold
now have T2000   Mk2 saloon in French Blue/grey trim  been stored without running since 1997
now has power steering
location  Luton
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1968Vitesse25
July 16, 2017, 11:16am Report to Moderator

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There is a rare big pad Type 16 calipers as fitted to the 2.8 Granada. Roughly twice the pad area.
Almost unobtanium now as Granadas were the car of choice for banger racers.
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JohnD
July 16, 2017, 3:55pm Report to Moderator


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I refer the Honourable Member to my previous answer.
Confession time,  SofS has four pots and pads twice-ish as big, but I fitted them when I was young and foolish.
MUCH more important were the vented discs (Ford Capri 2.8i) which abolished fade, in race or down mountain  passes.

John


Serial Vitesse racer.

Old Blue.  1995-2001
Silverback. 2001-2007
SofS. 2007 - to date.

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glang
July 17, 2017, 2:44pm Report to Moderator

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Quoted from 1968Vitesse25
There is a rare big pad Type 16 calipers as fitted to the 2.8 Granada. Roughly twice the pad area.
Almost unobtanium now as Granadas were the car of choice for banger racers.


Thanks, this must be what was fitted to the last TR6s although looking at the pics I posted dont know if pads are quite twice as big....
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1968Vitesse25
July 17, 2017, 7:40pm Report to Moderator

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the M16B pads



A popular upgrade on RS2000 rally cars.
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Gt6s
July 17, 2017, 9:38pm Report to Moderator


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Nothing wrong at all with the 16 caliper. Bar the weight. I use them with a vented spacer kit with vented 11 1/4 in Citroen discs.

Serious stopping.

Laurence


I remember being wrong once before Laurence Cochrane Newtownards Northern Ireland. 1972 Gt6 2600EFI The Mutt. Some original parts fitted, Not many ! Early PI motor overbored to 2.6. Lightened & balanced, ported chambered, cam'd 6-3-1 manifold. Running on DTA engine management system incorperating the PI throttle bodies fitted with electronic injectors and throttle position sensor. 0-60 4.7s & 7000rpm. Seriously annoys owners of modern stuff ! (particularly coz its a heap) 2500 S box with competition 28% od. 3.63 diff with a quaife in it, innit ! Rotoflex based rear but with a swing spring fitted & sliding shafts.(swing spring rotoflex without rotoflex's). Koni's front Spax rear. Hydraulic handbrake. Citroen xantia discs 11,1/4 in dia under Morris Garages 15 in Maestro alloys.
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