Vit mk 2 master brake cylinder plastic lid cover

[trigolf]

I've always wondered what the point of the plastic cover that fits over the metal lid of the master brake cylinder was. To me, it seems to serve no purpose and I've never seen a similar item fitted to any other British classic of the era. Any ideas ?

[dave.vitesse]

To keep some of the elements off the top of the metal lid. e.g. Water from seeping in the vent hole.

 

Dave

[Guest]

Dave.

 

I have one on my Mk2 as well.

 

Out of interest do you know if a cover was fitted to the clutch M/cylinder ?? Probably not, as slightly less important than it's next door neighbour !!

 

Regards.

 

Richard.

[dave.vitesse]

Richard, The plastic cover wasn't an original fitment. It appeared later on the Stanpart replacements in the 1970's. And yes the clutch replacement item had it as well. It reduces the moisture around the breather hole.

 

dave

[Steve P]

My MK 1 Vitesse 2l has one on the Brake MC.Been there since i bought the car in 1985.

Steve

[Guest]

Thanks Dave.

 

Might see if I can find a clutch cover when at Beaulieu.

 

Regards.

 

Richard.

[trigolf]

Hmm...some interesting details, thanks,although I'm not sure how the plastic cover can reduce moisture around the metal lid vent hole as the plastic lid has a vent hole in the centre too.

[dave.vitesse]

Moisture is dissipated quicker from around the vent hole with the plastic cover. At the time that was the theory and hence the introduction.

 

Dave

[Ben Caswell]

Would it be to reduce possible condensation on the under side of the alloy lid??

[dave.vitesse]

Very good point, yes it should do as it reduces rapid temp changes. Insulation I guess.

 

Dave 

[Pete Lewis]

tried that but  a plastic cap hurt me ears 

Pete

[dave.vitesse]

Pardon

[Pete Lewis]

got one of these from my dads  1920 motorcycle and acetylene lamp days ,  but looks a bit silly in a saloon  

 

doesnt solve the condensation though

[dave.vitesse]

You missed off the celery and egg whisk.

 

Dave 

[Paul H]

The Brake Master cylinder  cap on my Vitesse doesnt have a vent hole - The observant will notice a lack of fluid in the reservoir as just changed the seals 

 

Paul 

[dave.vitesse]

There is a vent but not on the top. Can remember with those caps, it may be on the side or underside.

 

Dave

[Pete Lewis]

Yes on recall I Think the top is twin walled and vents down the side of the threads

 

if you mend it to destruction you will find the vent

 

if im wrong ......you wont Ha!

 

but what ever the evolution it never stopped the stuff soaking up water like a sponge

 

trucks can hang around for ages waiting body work etc, we had to take samples and

reservoirs were often up, to 50 % moisture