Brake disc backing plate?

[michael.bob]

Hi guys I was just wondering on most disc brake conversion kits whether they usually use a backing plate? I have seen a whole heap on other cars that when they upgrade the system they get rid of the plate?
Does it make the bearings wear out sooner? hmm anyway, let me know what you reckon.
cheers, michael.

[jonathon]

The bearings will not be any worse off by not having a back plate fitted.
With our kits I prefer the disc to have no potential traps for stones and the like picked up from the road, so we do not employ a back plate. We have had no adverse effects over 7 years and over 80 kits sold.

[michael.bob]

Thanks Jonathon, appreciate the advice. My kit is almost complete and yes..........in hindsite I kinda wish i had just bought one as mine is taking for ages to get all the bits.
But never the less, big vented brakes and alloy 4 pots will be good for the traveler.
Oh and i will be in touch about brake and clutch stuff as soon as I have the cash to talk seriously.
cheers, michael.

[bmcecosse]

Big vented discs and 4 pots ! Do tell how you are doing this please !

[Scott]

I would advise to have the backing plate fitted if you do a fair bit of wet weather driving (in England - surely not ).


I've had a couple of bearings let go after water getting in past the seal.

Once was from really wet/muddy roads & actually sheared off the stub axle when the bearing seized. Luckily the disc & caliper held the hub onto what was left of the stub axle.

The 2nd bearing went a few weeks after pressure cleaning under the car after another long trip over rough roads. This one at least gave some warning that it was about to seize.

I have now made "deflectors" that don't actually cover the disc. They just cover the hub seal area so no moisture can get to the seal.