FWIW, I have used silicone fluid in my BJ8 and E-Type for years w/o
incident - and - I did not change any of the rubber in ny system when I
switched over. I know that isn't the "technical" answer, just my
experience.
> [Original Message]
> From: Ronald A. Fine <ronfineesq@earthlink.net>
> To: Paul Negus <Paul.Negus@iplbath.com>; <healeys@Autox.Team.Net>
> Date: 10/12/04 3:30:59 PM
> Subject: Re: Master cylinders
>
> Paul, Since you raise the question of changing over to silicone brake
fluid I might as well ask this question. Since I am rebuilding the entire
brake system and clutch system I could switch to silicone. Can I rest
assured that any rubber rebuild parts, seals, etc. that I purchase now are
compatible with silicone or do I have to be careful to purchase only
certain kits or from certain suppliers?
> Ron
>
> Re the material for the master cylinders, original ones that I have seen
> over the years since the late 70s have been aluminium except for the 7/8
> inch bore Brake Masters used on servo assisted cars, which have been
> cast iron.
>
> I suspect that the "625" cylinder received by Alex is 5/8 inch bore (=
> 0.625 inch).
>
> One other point to consider Ron - you need to replace all of your seals
> at least if going to silicone brake fluid. Even if not, I would suggest
> that all new brake parts would be a good way to spend those restoration
> bucks!
>
> Regards
>
> Paul
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