Brake Booster Protection

[Lewis's Friend]

Hi all. Over the next week or so, I'm going to be changing my scabby brake booster (always assuming I've bought the right one). I was planning on looking at making a little splash guard for it too, to try and protect it from rotting out from underneath.

Then a brilliant idea/sad display of utter stupidity came to me. Could I just mask off a suitable portion of the booster and stonechip it? It should offer water protection, and some impact protection if anything got flung up at it.

Is this a stupid idea though!? I look forward to your thoughts...

[phillpot]

Sounds like a job for a bit of Greenhulk's "Raptor" coating ..... clicky

[GreenV8S]

Do you have wheel arch inner liners fitted?

[Lewis's Friend]

GreenV8S said:

Do you have wheel arch inner liners fitted?

I do indeed. I believe having the bottom rot out of the boosters is quite common on S Series though?

Mine seems to be the original one in fairness, but if I can protect the new one it seemed worth it.

[Alan Whitaker]

Raptor Have 3 kits of the stuff, was going to use it to underseal the body

[v8s4me]

Make a widget to protect the servo. Where's the fun in just paining it?

[AutoAndy]

What about underseal stuff?

[phillpot]

Or a few more layers of decent paint? probably only gets one meager coat of powder coat or paint when made

[GreenV8S]

Lewis's Friend said:

I do indeed. I believe having the bottom rot out of the boosters is quite common on S Series though?

It is, but some cars don't have the liners which leaves the brake servo far more exposed. If you didn't have them, fitting them would be the first step. I don't know how much of the brake servo corrosion is from direct blasted road grit and how much is just from water spray blowing around the engine bay in wet weather. Since you have the wheel arch liners, I suspect better paint would be more effective than splash guards.

[phillpot]

The issue, imho, of any additional "coating" is that if it is not applied perfectly moisture can penetrate between it and the servo casing potentially doing far more damage than if things are left alone?


Original has lasted 25+ years, if me or my new servo last another 25 years I'll be happy

[DJR 7]

Said Raptor stuff in the undershield format

[Lewis's Friend]

Thanks for the feedback chaps. The Raptor stuff looks very interesting, but it seems to need a spray gun. Sadly I don't have those facilities.

It is also quite true to say the original booster has lasted pretty well. Really, I thought that if by some miracle my car lasts another 25 years or so, replacements may be extremely rare!

I may say that having looked today, the bottom of the booster is not good. Though beaten soundly into second place by the master cylinder for titanic-like levels of grot on it (though happily only surface)! It reminded me of the Trabant all over again...!