411 brake problems

[peter dowdle]

Kevin your series 5 cylinder is the same as the range rover one i have fitted except the plastic tank is slightly different in that it has a fluid lever sensor fitted to the lid.

[Kevin H]

Peter do you have the part number for the Range Rover master cylinder that you used? I want to see if it is the same number as the MC Girling list for the Bristol 411.

I'm intrigued as to how/why Bristol used a different MC on the 411 S1&S2. I have the Girling Parts lists for the Bristol 410 and 411 and the photo of yours doesn't appear to be the same as the MC listed for either vehicle.

Nor can I find a MC in the Girling catalogue illustrations that looks like the one on your's and Claude's cars.

However, the part number on Bristol's parts list for the 410 is also slightly different to the part number listed by Girling for the 410!

The joys of low volume, hand built cars!

[peter dowdle]

Kevin I purchased my range rover cylinder from Ritter Landrover in Burwood. The part no on the invoice was LR RTC3657. These are all over the internet for mid late 70s and early 80s Range Rovers. All series 1 and 2 411s seem to have the same cylinder ( although Brother Geoffs had something different from what he tells me). They all had the twin tanks separate from the unit itself. They are an old fashion looking unit with an unusual mounting system. I suspect their supply dried up and were forced to change to the more modern cylinder which seems common on all series 3 to 5 cars.

My conversion has been a great success.

[peter dowdle]

NB. The 410s had a completely different system

[Kevin H]

Originally Posted by peter dowdle

NB. The 410s had a completely different system

Yes I realised this when I looked at the parts diagrams for the 410. According to Girling the one attached is the one they supply to Bristol for the 410 (two per vehicle).

Peter the Range Rover one you used won't fit the 411 S5 because the mounting flange is 90 degrees out.

[Kevin H]

Claude,
If you haven't yet removed the master cylinder, the attached section from the 411 user's manual may help. The second page is probably redundant if you are replacing it with a different part.

Interestingly the instruction clearly refer to the type of master cylinder fitted to the 411 S1 and S2. There is no mention of the type fitted to the later 411s.

[peter dowdle]

A few comments and questions

1/ Where did you get the copy of the removal and replacement instructions

2/ Following those instructions no matter where I placed the master cylinder I could not remove the fulcrum pin that attaches to the pedal there is not enough space to move the pin sideways

3/ The range rover cylinder I purchased has two mounting hole the same as is shown on the 410 diagram . They are above and below the cylinder , There are 2 studs on the firewall which slip into the holes and 2 nuts secure it all. I had to make a plate with these studs attached and mount it on the cabin side of the firewall. Isnt this the way the series 5 mounts?