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My 1958 TR3A is an early one (TS 27489 LO) and it was built in Feburary 1958 and I took delivery of it in May, 1958. It had no dust disks for the front brakes. S-T started to put them on later TRs and then a some point, they stopped putting them on. I never had any issues concerning these items in 195,000 miles from new.

 

Don Elliott, Original Owner

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FWIW one could argue that there is a potential for forced air cooling particularly ff the front has a slight angle formed.

 

There is only one way round for these given the cut out for the brake caliper and the mounts.

Edited by Rodbr
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Road grime tends to collect on the covers that otherwise would have landed on the rotors. Whether that function marginally improves pad or rotor life is hard to tell.

 

As seen above, the opening goes to the rear. Towards the front is a small S shaped bracket - rear bottom of the opening a dogleg bracket. These face inwards thus determining a left or right hand cover.

 

Viv

Edited by vivdownunder
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As some of us I had them removed on both my TRs, no adverse effect, except originality ... :( :( Beside oil leaks from the engine there is not much else they could provide protection from

Anyhow they were in serious conflict with the R&P that I fitted on the 3A. :blink:

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This is not the greatest picture but it is the only one I can find before the disc was installed.

 

LHS%20Front_zpsidjai3rq.jpg

Thanks all, especially Stan - the round hole and slot showing in your photo are the best guide to the fitting that I can see. Without them, the guards I have will swap from side to side - (in both cases with the caliper cut-out to the rear).

 

Still wondering what the 3cm holes and the slot are for though ......?

 

Bob

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All will become clear when you fit them ! I fitted a pair to my '3 while re-building it. They took quite a bit of felling to get them to fit just right, the holes are there to give clearance around the base of the trunnion, (slot) & the end ball joint on the track rod (hole)

 

 

 

Bob.

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All will become clear when you fit them ! I fitted a pair to my '3 while re-building it. They took quite a bit of felling to get them to fit just right, the holes are there to give clearance around the base of the trunnion, (slot) & the end ball joint on the track rod (hole)

 

attachicon.gifBrakes 2.JPG

 

Bob.

 

Thats another useful pic thanks Bob - I can see the front guard bracket trapped under the washer and the top rear bracket under the caliper bolt head.

My discs & calipers are all off at the moment for refurb so I'm in best position to try & fettle these onto the car this weekend

Cheers

Bob

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Viv - I asked my friendly neighbour with the 10" lathe to skim my rotors flat and smooth in 1989 when I was restoring my 1958 TR3A. Today, the rotors still look like they did in 1989 with another 113,000 miles on the TR. The lack of the disks never caused me any issues.

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Don, as you demonstrate, the covers weren't of much benefit to those using paved roads. May have helped owners on farms who constantly drove on dusty gravel tracks.

 

Bob, the purpose of the circular holes in the dust covers is to ventilate the recess at the back of the rotors. As Lebro referred to, the slots are to allow on/off fitting clearance at the trunnion bottom flange.

 

Rgds,

 

Viv

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I'm not sure whether it is better to keep the guards, running the risk of trapping loose stones on country lanes and mountain tracks or remove them and let everything bounce off. I still have mine fitted as one advantage of keeping them is that they prevent expelled grease getting onto the disks when greasing the front suspension (just completed yet again - twice a year is tedious!). However, it pays to cover the slots and holes with a piece of cardboard when doing this - $od'$ Law ensures that if you don't, then the manky grease will find one of the gaps! [Found out the hard way years ago].

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