Replacing Drum Brakes with Discs

[Bobbyweaf]

Thanks Lads,

Is there a makers number for the 406 Callipers? Presumably Bristol's just bought standard items from X manufacturer that fitted to their requirements.

Sadly, I could not do the job myself but if a garage is to fit them, I would want to give them parts that are a straight fit without causing any problems.

[GREG]

Pretty sure they were the Dunlop ones that fitted the E type Jag, before they moved over to Girling for the 410 onwards....

[GREG]

Also make sure you fit new hoses or braided ones -- I have been amazed at the difference this makes, as the old ones must expand a lot like a balloon,making less pressure to the brakes.

Bristol and most modern Merc's are 112 PCD -- I think Stefano Pasini fitted 16" Audi steel wheels to his 409 -- looks the same and more option for a bigger tyre !

But with a bigger tyre you would need power steering !!! Ahh , leave it all alone :-))

[Geoff Dowdle]

Bobbyweaf,
If you are not able to do the conversion yourself it will become a very expensive operation unless you can find a 406 being parted out . If not probably best to stick with the drum brakes , as with most classic cars today they are used rarely and not to the limit .

Geoff

[peterg]

I have (refurbed) girling discs at the front and drums at the rear, new piping and a 4:1 servo, and the braking effect far exceeds the tyres (Michelin Taxi) capacity to grip!

It would be a lot cheaper to replace your brake lines first

[GREG]

Maybe best taking the car to a Jag specialist / restoration company and letting them take the lead and estimate the costs -- armed with the info from here ...

They may come up with something better than all of us !