The Triumph Dolomite Club - Discussion Forum

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PostPosted: Sun Jun 28, 2020 8:19 pm 
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Location: WARWICKSHIRE
Hi all. Kinda following on from my post on discs below. Has anyone tried EBC or rosini brake discs for the sprint? Cheers all.
John

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PostPosted: Sun Jun 28, 2020 9:03 pm 
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My honest opinion is that the way to go is the Trackerjack vented disk conversion. To hell with originality, your safety (and the safety of your passengers and other road users) is far more important. I believe that my car is fitted with Golf GTI disks (as fitted by the wonderful Carledo) and the braking is superb, even though it is but a humble 1500 model with far less power than Sprint. Just my two-penneth worth, I'm sure that others will have their own equally valid opinions....

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PostPosted: Sun Jun 28, 2020 10:11 pm 
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I have St vented discs on mine,and a std tandem brake set up,with Mintex pads-stops on a sixpence.


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PostPosted: Mon Jun 29, 2020 1:06 pm 
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Location: Over here...can't you see me?
I have a couple of NOS discs if you wanted to stay standard?


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PostPosted: Mon Jun 29, 2020 2:50 pm 
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Joined: Sun Aug 21, 2011 4:12 pm
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Location: Highley, Shropshire
Another vote for TJ vents here (not just cos I want the work)

The problem with the Sprint brakes is not so much the general efficiency A Sprint will stop OK - once or twice!

The problem is brake fade from the discs overheating and boiling the fluid.

There are steps you can take with better pads and racing brake fluid but the limitations are in the discs themselves. A single solid disc simply CAN'T dissipate heat as well as a vented disc can.

If you are really set on dragging your Sprint brakes, kicking and squealing, into the 21st century, don't go for half measure, fit vented discs, you'll wonder how you ever drove wihout them! Drilled and grooved single discs are expensive snake oil for suckers!

I run TJs exclusively on my own cars and have now fitted 8 sets for customers with a 9th due to arrive in the next few days. All have been as pleased as Andy (thanks for the plug mate) I wouldn't go back to standard EVER! And I don't know of anyone else who would either. I only know of ONE person who has voluntarily removed a TJ kit from their car, and that was to fit something even bigger and better that could cope with 400bhp!

Steve

_________________
2 door '73 Toledo with Vauxhall Carlton 2.0 8v engine OWF 797M (The Carledo)
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine EGP 247T (The Dolomega)
'91 Cavalier 2ltr 8v auto
'95 Cavalier 2ltr 16v auto
Spectrum Auto Services, Servicing, Repairs, Electrical, Recomissioning, MOT prep, Trackerjack brake fitting service.
Apprentice served Triumph Specialist for 45 years and home of Maverick Triumph.PM for more info or quotes.


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PostPosted: Mon Jun 29, 2020 6:48 pm 
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Joined: Fri Apr 15, 2016 10:08 am
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Location: Ayrshire, Scotland
Steve, do you supply the TJ conversion set? I'm perfectly capable of fitting it myself providing there are some instructions if anything is tricky. What does the conversion cost? My 1977 1850 has single circuit brakes. As I'm in Scotland, coming to see you isn't desperately convenient.

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Mike
(MGB GTV8, BMW Z3 2.2, and Dolomite 1850HL)


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PostPosted: Mon Jun 29, 2020 8:30 pm 
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TDC Shropshire Area Organiser

Joined: Sun Aug 21, 2011 4:12 pm
Posts: 5717
Location: Highley, Shropshire
Quote:
Steve, do you supply the TJ conversion set? I'm perfectly capable of fitting it myself providing there are some instructions if anything is tricky. What does the conversion cost? My 1977 1850 has single circuit brakes. As I'm in Scotland, coming to see you isn't desperately convenient.
Best to get in touch with Jon himself and cut out the middleman! PM "trackerjack" on here or Jonathan Alastair Jackson on the FB page. I just get single kits from him as needed, no point in paying 2 lots of heavy postage!

Single circuit or dual makes no difference. Prices go from the basic kit at a bit under £200 to the full monty at £399

Jon can give you exact prices and more details, the install has its fiddly bits, but if you've put the IRS on your BV8, it should be well within your capabilities! Full instructions come with the kit! And as probably the most experienced installer, I'm more than willing to give advice by phone if you need it!

Steve

_________________
2 door '73 Toledo with Vauxhall Carlton 2.0 8v engine OWF 797M (The Carledo)
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine EGP 247T (The Dolomega)
'91 Cavalier 2ltr 8v auto
'95 Cavalier 2ltr 16v auto
Spectrum Auto Services, Servicing, Repairs, Electrical, Recomissioning, MOT prep, Trackerjack brake fitting service.
Apprentice served Triumph Specialist for 45 years and home of Maverick Triumph.PM for more info or quotes.


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PostPosted: Mon Jun 29, 2020 11:13 pm 
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Future Club member hopefully!
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Joined: Wed Oct 23, 2013 7:10 pm
Posts: 649
Location: NORTH NOTTS
dont know about rossini disc but ive got a pair i got as spares,might be long time in fitting these on car as the ones that are on there are good as new 6years later on and still spot on..not mutch poke from a 1300.....tj are out my price for 1300,,,,maybe if i had sprint then mind set would change and go for tj full monty!!! my 2p

but dont forget to get good tyres! tyres also give huge grip if bought right ones,,no point in having good brakes if you got s##t tyres

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Dolomite 1300,1980`V`reg in british racing brown(russet),3.63 diff with 21t speedo pinion,95%poly`d,HL clocks,standard wheels with SE covers wrapt in 175 70 13,mot`d 19-09-2014,been off the since 1990,(july2017) stainless steel exhaust 3-piece,(xmas2018) wooden mountney steering wheel,(june2020) new monroe shock(radial front,gas-matic rears) with -1" lower`d springs all round.

Dolomite 1300,1977(tax free 1-1-1977),`R`reg in carmine red,bog standard including rust :shock: last time on road 6-2005


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PostPosted: Tue Jun 30, 2020 8:23 am 
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Joined: Fri Apr 15, 2016 10:08 am
Posts: 525
Location: Ayrshire, Scotland
Quote:

but dont forget to get good tyres! tyres also give huge grip if bought right ones,,no point in having good brakes if you got s##t tyres
How true. I was told many years ago that the brakes only stop the wheels. The tyres stop the car. I have new Uniroyal Rain tyres on my 1850 and they are excellent. My brakes are all new standard components so I'm probably not going to change right now. They do stop the car pretty well, but need a good shove on the pedal when compared with a modern car. And no, its not a faulty servo. That was also reconditioned during the rebuild.

Its interesting to look at the front discs on the Dolomite and note how small they are. The MGB, an older design but with similar performance has huge disc brakes by comparison - a full 2 inches bigger in diameter giving a much larger swept area. I find it amazing that the manufacturer didn't specify better brakes for the Sprint at least.

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Mike
(MGB GTV8, BMW Z3 2.2, and Dolomite 1850HL)


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PostPosted: Tue Jun 30, 2020 8:06 pm 
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TDC Shropshire Area Organiser

Joined: Sun Aug 21, 2011 4:12 pm
Posts: 5717
Location: Highley, Shropshire
Quote:
Quote:

but dont forget to get good tyres! tyres also give huge grip if bought right ones,,no point in having good brakes if you got s##t tyres
How true. I was told many years ago that the brakes only stop the wheels. The tyres stop the car. I have new Uniroyal Rain tyres on my 1850 and they are excellent. My brakes are all new standard components so I'm probably not going to change right now. They do stop the car pretty well, but need a good shove on the pedal when compared with a modern car. And no, its not a faulty servo. That was also reconditioned during the rebuild.

Its interesting to look at the front discs on the Dolomite and note how small they are. The MGB, an older design but with similar performance has huge disc brakes by comparison - a full 2 inches bigger in diameter giving a much larger swept area. I find it amazing that the manufacturer didn't specify better brakes for the Sprint at least.
The Sprint's front discs are quite literally limited by the size of the wheels, an MGB has bigger wheels 14 or 15". Even the TJ vents are only slightly larger discs by about 3/4" dia, this made possible by using the single piston caliper from Sierra/Ka/Fiesta etc. Jon found it needful to keep the conversion within the limits of the Sprint alloy wheel - or nobody would have bought it! It appears, as i've said before, that Sprint owners are more attached to their alloys than their firstborn!

I seem to be alone in this respect, for the Dolomega, i've made up an uprated TJ kit with 256mm (a shade over 10") discs and 1.7 Puma calipers. I figured the combo of automatic trans and my exuberant driving style demanded the best brakes I could come up with. But i've had to go to 14" wheels to do it. I've publicised the possibilities of this upgrade, but interest has been ZERO!

In fact the Sprint alloys are MORE restrictive than an 1850's steel wheels! Being designed and made in the infancy of alloys, they are inordinately thick in spots!

Steve

_________________
2 door '73 Toledo with Vauxhall Carlton 2.0 8v engine OWF 797M (The Carledo)
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine EGP 247T (The Dolomega)
'91 Cavalier 2ltr 8v auto
'95 Cavalier 2ltr 16v auto
Spectrum Auto Services, Servicing, Repairs, Electrical, Recomissioning, MOT prep, Trackerjack brake fitting service.
Apprentice served Triumph Specialist for 45 years and home of Maverick Triumph.PM for more info or quotes.


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PostPosted: Tue Jun 30, 2020 9:14 pm 
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Joined: Mon Dec 12, 2016 9:53 pm
Posts: 948
Location: Harrow Middlesex
Quote:
Quote:
Quote:

but dont forget to get good tyres! tyres also give huge grip if bought right ones,,no point in having good brakes if you got s##t tyres
How true. I was told many years ago that the brakes only stop the wheels. The tyres stop the car. I have new Uniroyal Rain tyres on my 1850 and they are excellent. My brakes are all new standard components so I'm probably not going to change right now. They do stop the car pretty well, but need a good shove on the pedal when compared with a modern car. And no, its not a faulty servo. That was also reconditioned during the rebuild.

Its interesting to look at the front discs on the Dolomite and note how small they are. The MGB, an older design but with similar performance has huge disc brakes by comparison - a full 2 inches bigger in diameter giving a much larger swept area. I find it amazing that the manufacturer didn't specify better brakes for the Sprint at least.
The Sprint's front discs are quite literally limited by the size of the wheels, an MGB has bigger wheels 14 or 15". Even the TJ vents are only slightly larger discs by about 3/4" dia, this made possible by using the single piston caliper from Sierra/Ka/Fiesta etc. Jon found it needful to keep the conversion within the limits of the Sprint alloy wheel - or nobody would have bought it! It appears, as i've said before, that Sprint owners are more attached to their alloys than their firstborn!

I seem to be alone in this respect, for the Dolomega, i've made up an uprated TJ kit with 256mm (a shade over 10") discs and 1.7 Puma calipers. I figured the combo of automatic trans and my exuberant driving style demanded the best brakes I could come up with. But i've had to go to 14" wheels to do it. I've publicised the possibilities of this upgrade, but interest has been ZERO!

In fact the Sprint alloys are MORE restrictive than an 1850's steel wheels! Being designed and made in the infancy of alloys, they are inordinately thick in spots!

Steve
Steve

your not alone i used 1.7 puma Calipers but 260mm disc same as the Stag but i am using 14 inch wheels

Dave


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PostPosted: Wed Jul 01, 2020 9:36 am 
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Joined: Fri Apr 15, 2016 10:08 am
Posts: 525
Location: Ayrshire, Scotland
Ah yes. You are right. The MGB has 14" wheels as standard, although mine is on 15".

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Mike
(MGB GTV8, BMW Z3 2.2, and Dolomite 1850HL)


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PostPosted: Wed Jul 01, 2020 11:33 am 
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TDC Shropshire Area Organiser

Joined: Sun Aug 21, 2011 4:12 pm
Posts: 5717
Location: Highley, Shropshire
Quote:

your not alone i used 1.7 puma Calipers but 260mm disc same as the Stag but i am using 14 inch wheels

Dave
We might as well be! out of 519 surviving Sprints (last time I checked HML) there's you, me, Ian, Tony Burd, Paul Bookers Redtop track car and a couple of cars even more modified than mine running bigger wheels. Perhaps I should have said "ALMOST alone"!

The genuine Sprint alloys seem indelibly linked to the character of the car, so much so, that if you put Sprint alloys (and a vinyl roof) on a lower spec Dolomite, even the public at shows will accuse your car of BEING a Sprint! Even yours, with Stag alloys is going to look similar enough to the real thing to fool most punters and car show rivet counters. So long as there's not a real set next to it!

Whilst access to bigger better brakes is the MAIN reason i've gone to bigger rims, there were some subsidiary reasons, the cost of finding and restoring a suitable set of proper Sprint wheels (mine came with only 3 and they were near enough scrap) the look of the car when fitted with 185/60/13s against near stock suspension, don't "fill the arches" and look too small. I don't want to lower it and compromise ride quality too much on what is built as a mile munching motorway cruiser (I have the Carledo if I want my spine shattered) and their effect on gearing which affects economy. I didn't want to use the stock 175/70s too narrow, expensive and hard to find in the higher speed ratings I WOULD need. So for ME and my decidedly UN-original car it was a no brainer.

Steve

_________________
2 door '73 Toledo with Vauxhall Carlton 2.0 8v engine OWF 797M (The Carledo)
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine EGP 247T (The Dolomega)
'91 Cavalier 2ltr 8v auto
'95 Cavalier 2ltr 16v auto
Spectrum Auto Services, Servicing, Repairs, Electrical, Recomissioning, MOT prep, Trackerjack brake fitting service.
Apprentice served Triumph Specialist for 45 years and home of Maverick Triumph.PM for more info or quotes.


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