Morris Minor Owners Club

Hi
i want to upgrade the brakes on my minor to discs,
i just wanted too check these are the right kits? and has anyone brought one of them?

http://morrisminorspares.co.uk/shop/pro ... 4ae8f1e370

http://morrisminorspares.co.uk/shop/pro ... 4ae8f1e370

Thanks Ben

Yes they are. Haven't used them myself, but I believe the Marina kit got some bad press from somewhere? If you go for the Ford kit, be aware that you may have a different PCD to the minor standard.

chesney wrote: I believe the Marina kit got some bad press from somewhere?

Yes, inaccurate information had been posted on the internet and in the press. Scroll down the ESM 'News' page for info: http://morrisminorspares.co.uk/news.php ... 4ae8f1e370

Both kits allow you to retain Minor wheels. You can opt to have Ford stud pattern on the ford-based kit to allow a greater range of wheels to be fitted.

Be aware if you fit discs you MUST modify the master cylinder by removing a seal. You may also find you need a servo, and a remote reservoir for the fluid. It's not an inexpensive business........

bmcecosse wrote:Be aware if you fit discs you MUST modify the master cylinder by removing a seal. You may also find you need a servo, and a remote reservoir for the fluid. It's not an inexpensive business........

I realise this is an old post but found it in the search results as i'm doing something similar this weekend

Can anyone tell me which seal needs to be removed from the master cylinder? Any pics?

I have a Ford disc brake system to fit with Minor hubs, I have a seperate reservoir and a servo if required. I'm going to replace the seals on the existing master cylinder (my project hasn't moved in many years) so it would be useful to know which one not to replace

Apologies if this has been discussed a million times but i couldn't find anything in search results

Thanks in anticipation

Dave

the seal to remove / put a hole in is the mall cup seal (would just about fit over the end of a pencil) that sits in the very inner end of the m/c (adjacent to where the t-piece banjo screws in).

This is the valve that helps you 'pump up' the brakes when they are poorly adjusted / full of air. It retains pressure in the lines for a little while after you press the pedal (useful for the reasons before) but a very bad idea for disks as they must have a quick release of pressure.

Thanks very much for that Ray, useful advice

The seal that has to be removed is circled in red in the diagram below - the 'Valve Cup':
[frame][/frame]

removed the top hat seal on mine and it works perfect

Thanks all, useful information. Little job for the weekend then

I have a similar problem with sticky front disc brakes which I have yet to cure and as such have lived with for some time.

My brakes are the Marina type ones and both calipers have been replaced which caused me to scratch my head when still faced with sticky brakes. Having read this post I have since realised that a while back I also replaced the master cylinder with the standard one purchased from ESM.

It would seem that I have overlooked the fact that I needed to remove this little top hat seal before fitting the new cylinder.

There's a job for the weekend (tomorrow). I'll let you know how I get on.

One thing that I am thinking however is that if I'm going to have the cylinder apart to remove this seal, should I purchase a repair kit and replace all the other seals at the same time? The cylinder itself is no more than 2 years old.

I wouldn't!

I wouldn't either, leave well alone, just fix what needs fixing.

Ben,

If the whole master cylinder is only 2 years old, then providing it is spotlessly clean inside, I would just remove the 'Valve Cup' and re-use everything else AFTER making sure that it still spotlessly clean inside!

Ready modified master cylinders are already available if anyone doesn't fancy dismantling theirs, or is worried they may remove/damage something else etc
http://www.jlhmorrisminors.co.uk/store/ ... oductId=15

Be very careful as i have heard some of the new copy ones leaking like mad made in China?

Thanks for the help guys

IslipMinor wrote:Ben,

If the whole master cylinder is only 2 years old, then providing it is spotlessly clean inside, I would just remove the 'Valve Cup' and re-use everything else AFTER making sure that it still spotlessly clean inside!

New mastercylinder has been fitted as the old one was 43 years old and didnt want to come out with out a fight so a new one was required

Thanks

Pulled my master cylinder out this weekend, removed the top hat seal and put everything back together, bled brakes etc.

First run of about 13 miles and so far so good - no more sticking brakes - yay, go MMOC Forum - thanks guys!