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MG MGB Technical - Brake pads, rotors
|Can anybody please help with EBC confusion. I was thinking of using EBC Turbo Grove brake rotors on MGBV8 conversion. There is a company sell X25 EBC rotors + greenstuff pads as a kit. They claim rotors to be 11mm thick and pads are bigger ,provide 25% more sweep area. These fit with standard MGB 1800 calipers.|
Every other supplier quote EBC turbo groove discs to be 9mm. EBC do not list a 11mm for MGB? Is it likely the green stuff pads are V8 spec. Do standard V8 pads fit in MGB 1800 calipers and increase sweep area?
The X25 sounds like a great option but I want to confirm what its about. Any help please
I assume you refer to Powerstop
Most V8s now exceed to original design spec and 4pots, with better pad stability, and vented, as used on RV8, are also available. Depends upon how much heat capacity is required.
|Original V8 spec pads do fit into MGB 1800 calipers, and the pad contact area is larger than 1800 pads.|
The thicker discs may help with heat disapation, but I wonder if there will be width issues in fitting them to the standard caliper. The main selling point in the Powerstop adverts I saw seemed to be that the discs will last longer before getting work to acceptable limits.
As I think Paul was reffering to, if you are planning a new conversion you may be better off with alternative brake systems than factory original.
|Unless you are upgrading the brakes to counteract fade I don't see how how changes to the braking system will improve stopping-power, if you can't lock the front wheels with gradually applied pressure (as opposed to banging them on which *will* lock them easier) then there is something wrong with your brakes, or possibly legs. The only thing that will bring you to a stop more quickly is greater friction between tyre and road surface. If you increase that, then you may well need upgraded brakes to be able to lock them again. But that will alter the front/rear balance and reduce the proportion of rear braking, so really you would need to upgrade those as well to get the greatest benefit.|
Also V8 pads in V8 calipers are handed, there is an inner and an outer pad on each wheel and they cannot be reversed.
|Paul Hunt 2|
|Tyre grip is key, but if you use stickier tyres there is more weight transfer, so you may need more front and less rear. |
If a one stop from 70mph produces temps of say 300F a stop from 140mph could produce 1000F, depends what you what want as backup.
|The question I have is how do you get a thicker disc (rotor)AND thicker pads in a standard caliper ?|
Thicker dics and bigger pads will definately help the brake fade.
|Sorry, re-reading the advert, it's a thicker disc, so does that mean "thinner" pads?|
|What are you guys using for the rear drums when using the V8 or EBC greenstuff pads in the front?|
|Paul, Surrey - of course, brain fade on my part.|
|Paul Hunt 2|
|Many thanks for all the graet input.|
To clarify the project, I have saved a car destined for the scrap yard and well on the way to building a V8 Sebring style. The tyres will be wider/lower than standard and the engine sensably improved, hense the requiremnt for brake upgrade.
I have spoken to companies that race MGB's and they all claim resonable performance from Standard 1800 brakes. The EBC X25 discs, apparently, are purpose made for 'Powerstop@ and are approx 2mm thicker than others available, but just fit in the caliper. I guess the pads are probably standard thickness but have a V8 sweep area. With regard to the rears... it seems these don't contribute much to stopping so will receive basic attention.
This is a great forum and I spend hours picking up all your knowledge. You will see many more threads from me.
|Just seen them advertised in the new release of the MG car club magazine|
I purchased a set of V8 pads to install in standard MGB calipers. They are marked "1" and "2". I don't know which one to install on which side of the caliper. The only difference seems to be the backing plate. Can you help sort this out?
This thread was discussed between 06/02/2006 and 12/02/2006
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