avivalasvegas Posted February 7, 2021 Report Share Posted February 7, 2021 Greetings! After driving a few hundred miles following its return from Moordale motors, my GT6 clear has a warped rotor. Time to get the best possible replacement - recommendations that surpass the standard club shop options anyone? Also, while the rotor is off the car, I plan on replacing the front shock absorbers. I'm told Koni yields the most comfortable ride? Thanks in advance! Link to comment Share on other sites More sharing options...
Guest Posted February 7, 2021 Report Share Posted February 7, 2021 Not sure which dizzy your car uses, but if it is Lucas then the Distributor Doctor is the best route. If it is Delco than you are out of luck - albeit the DD is now making the correct condensers for the Delco dizzy, but with regret not rotors. Link to comment Share on other sites More sharing options...
johny Posted February 7, 2021 Report Share Posted February 7, 2021 Ha, or is it a brake disc? I think we need the symptoms to be sure? Link to comment Share on other sites More sharing options...
Colin Lindsay Posted February 7, 2021 Report Share Posted February 7, 2021 I'm assuming it's the brake discs unless we're talking about the alternator windings... if I'm right, this is one of my fav online sellers: https://www.ebay.co.uk/itm/ONE-PAIR-OF-BRAND-NEW-TRIUMPH-VITESSE-2-LITRE-GT6-BRAKE-DISCS-213227/370261188384?fits=Model%3AGT6&hash=item5635495f20:g:wbMAAOSwT5tWJMPG Link to comment Share on other sites More sharing options...
Clive Posted February 7, 2021 Report Share Posted February 7, 2021 Pretty sure we are talking drake discs. You could buy expensive drilled, grooved or whatever discs, but they don't achieve much, if anything. I would be buying something that is a brand I recognise. I have seen EBC, but not mintex or anything else I know. Saying that, brake discs are usually OK. Not heard anything bad about the usual suppliers. Link to comment Share on other sites More sharing options...
Jeffds1360 Posted February 7, 2021 Report Share Posted February 7, 2021 Ha! Rotors..... an American term for brake discs! Most confusing when searching. Link to comment Share on other sites More sharing options...
Clive Posted February 7, 2021 Report Share Posted February 7, 2021 9 minutes ago, Jeffds1360 said: Ha! Rotors..... an American term for brake discs! Most confusing when searching. It the Las Vegas bit in the OPs name..... 1 Link to comment Share on other sites More sharing options...
johny Posted February 7, 2021 Report Share Posted February 7, 2021 I know cast iron (the most likely material for these discs) can deform some time after casting and for that reason its recommended that castings are left a while before machining. It might not have been done in this case and I would go back to the supplier/installer to ask them to rectify the problem... Link to comment Share on other sites More sharing options...
Pete Lewis Posted February 7, 2021 Report Share Posted February 7, 2021 hub runout will give the same problem and often is the start of a wonky disc do check the front hub bearing endfloat if excessive it can / will induce thruppenny bit braking as can stuck on resin on the back of the disc where you dont see it Pete Link to comment Share on other sites More sharing options...
avivalasvegas Posted February 7, 2021 Author Report Share Posted February 7, 2021 Yes, brake discs aka rotors. Sorry for the confusion - it's a remnant term from my 20s spent in America. With other cars, I've had great success purchased from known brands like Brembo etc. and have always picked coated discs over any of the drilled/ slotted stuff, especially when the disc is invisible. These EBC discs look well made but are limited to models Girling/TRW Front Calipers. I suppose I'll need to determine which Calipers my 69 GT6 has? https://www.ebay.co.uk/itm/EBC-Replacement-Front-Solid-Brake-Discs-for-Triumph-GT6-2-0-66-71/312053658308?epid=248980256&hash=item48a7d8f2c4:g:jDIAAOSwz7Naawjd Link to comment Share on other sites More sharing options...
DanMi Posted February 7, 2021 Report Share Posted February 7, 2021 surely if Moordale motors fitted them you should speak to them as they should stand by the parts they fit and the checks they make in fitting them. I wouldn't be surprised if all suppliers are ultimately getting them from the same manufacturer. Link to comment Share on other sites More sharing options...
avivalasvegas Posted February 7, 2021 Author Report Share Posted February 7, 2021 Dale didn't replace the rotors - we discovered later that it was warped. Hence the need for replacements. Link to comment Share on other sites More sharing options...
DanMi Posted February 7, 2021 Report Share Posted February 7, 2021 I would still talk to them as if working on the brakes they should have checked. I would not be happy if finding brake problems weeks after having them fixed. I would never replace pads without disk as disks generally don't last 2 sets of pads. Anyway it's a pretty simple job and as I said they probably all come from the same factory unless you are going for extremely expensive race ones. They are after all pretty basic on these cars. But as Pete said do make sure the hub faces are clean and not distorted. Link to comment Share on other sites More sharing options...
johny Posted February 7, 2021 Report Share Posted February 7, 2021 It does seem a bit strange that presumably the brakes were ok and then when coming back from a workshop theres a problem. Unless youve been doing some heavy braking a existing disc that suddenly warps would be surprising... Link to comment Share on other sites More sharing options...
Clive Posted February 7, 2021 Report Share Posted February 7, 2021 2 hours ago, avivalasvegas said: Yes, brake discs aka rotors. Sorry for the confusion - it's a remnant term from my 20s spent in America. With other cars, I've had great success purchased from known brands like Brembo etc. and have always picked coated discs over any of the drilled/ slotted stuff, especially when the disc is invisible. These EBC discs look well made but are limited to models Girling/TRW Front Calipers. I suppose I'll need to determine which Calipers my 69 GT6 has? https://www.ebay.co.uk/itm/EBC-Replacement-Front-Solid-Brake-Discs-for-Triumph-GT6-2-0-66-71/312053658308?epid=248980256&hash=item48a7d8f2c4:g:jDIAAOSwz7Naawjd They all had girling calipers, and although 3 variants, they are all essentially identical. So they will be correct. (OK, should be!) 1 Link to comment Share on other sites More sharing options...
avivalasvegas Posted February 7, 2021 Author Report Share Posted February 7, 2021 42 minutes ago, johny said: It does seem a bit strange that presumably the brakes were ok and then when coming back from a workshop theres a problem. Unless youve been doing some heavy braking a existing disc that suddenly warps would be surprising.. It wasn’t Dale’s fault at all. The car had one seized caliper and one seized cylinder. It was a miracle it stopped at all. When the caliper was unseized, the rotor was mistakenly preserved. That will be rectified next along with the front shock absorbers. Any thoughts on the Koni? Link to comment Share on other sites More sharing options...
Clive Posted February 7, 2021 Report Share Posted February 7, 2021 Koni are hands down the best shocks available. Only downsides are (1) not height adjustable and (2) a bit of a faff to adjust. But mine are now 25 years old, been on 2 cars and still have not needed to adjust them once set. And mine have done a lot of miles now. Bastuck WERE the cheapest supplier, but that may have changed with Brexit Link to comment Share on other sites More sharing options...
johny Posted February 7, 2021 Report Share Posted February 7, 2021 Ive certainly had no problem with the standard discs that everybody stocks but, as you might have read, the pads used seems to make quite a difference and of course it depends on what youre going to use the car for.... Link to comment Share on other sites More sharing options...
KevinR Posted February 7, 2021 Report Share Posted February 7, 2021 It is very unusual for a brake disc to actually warp. The overwhelming majority of reported warped discs are actually caused by heat soak changing the crystalline structure of the area of the (hot) disk where the brake is kept applied when the vehicle is stopped. It is something that race drivers are well aware of and need to be careful to avoid - after heavy braking to a stop (when the disc gets very hot), do not keep the brakes applied as the area clamped by the pads will undergo a crystalline change, which will then result in the symptom that is usually misinterpreted as warped discs. The fix is still the same - new disks are needed. Link to comment Share on other sites More sharing options...
Ian Foster Posted February 8, 2021 Report Share Posted February 8, 2021 Have you confirmed that the disc is actually warped by measuring runout with a dial gauge? If you are feeling judder under braking it could well be the rear drums. (got that T shirt) Ian Link to comment Share on other sites More sharing options...
Nigel Clark Posted February 8, 2021 Report Share Posted February 8, 2021 Avoid so called 'uprated' drilled and/or grooved discs. Unnecessary on the road and can be prone to rapid wear of pads and discs in my experience. I've had standard Rimmers discs on my GT6 for almost 10 years, and no problems. Nigel Link to comment Share on other sites More sharing options...
dougbgt6 Posted February 8, 2021 Report Share Posted February 8, 2021 I agree with Nigel, they don't do anything for ordinary road use. Also nobody tells you how noisy they are (Well, except me obviously ) and they eat pads. I fitted them but very quickly decided they had to come off! Doug Link to comment Share on other sites More sharing options...
NonMember Posted February 8, 2021 Report Share Posted February 8, 2021 12 hours ago, DanMi said: I would never replace pads without disk as disks generally don't last 2 sets of pads I can't say I've found that on the Triumphs. Perhaps on the modern, where the pads are made of carborundum and the discs of chocolate, but with good quality pads and discs on older cars I would expect the discs to last a good long time. 1 1 Link to comment Share on other sites More sharing options...
dougbgt6 Posted February 8, 2021 Report Share Posted February 8, 2021 Yes, I agree with NM. Apart from my aberration when I tried the drilled and grooved my GT6 has only had 2 sets of discs in 75k miles. What are you doing with them Dan?!! Chocolate discs mmmmm. Doug Link to comment Share on other sites More sharing options...
Colin Lindsay Posted February 8, 2021 Report Share Posted February 8, 2021 11 hours ago, avivalasvegas said: It wasn’t Dale’s fault at all. The car had one seized caliper and one seized cylinder. It was a miracle it stopped at all. I thought it had a full MOT? The system is very tight over here, it wouldn't have got through with anything less than fully working brakes. For normal road use go for standard discs, which you'll find at a variety of prices, and standard pads work well enough for me. Link to comment Share on other sites More sharing options...
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