Lotus Elan

Tandem Master Cylinder

PostPost by: patrics » Thu Aug 27, 2009 8:35 pm

Brian, thanks ? that looks very tight! might have to move into the corner of the engine bay.

Steve
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PostPost by: Galwaylotus » Thu Aug 27, 2009 8:51 pm

Eric,
That's brilliant! I'm leaning toward getting the AP Racing cylinder from Caterham cars as it's not easy to find someone dealing in Girling parts. AP part is CP6093 I think. Caterham calls it part number 77176. I've sent an e-mail to confirm dimensions and that it has a remote reservoir capability.
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PostPost by: GrUmPyBoDgEr » Fri Aug 28, 2009 10:08 am

Hi,
In addition to my initial posting, I just stumbled across some pictures that show how I installed remote reservoirs in my S4.
OK no twin cam in sight but the available space situation beneath & behind the Webers presented the same situation that you're dealing with.
I think you will also find ample space on the bulkhead above the passenger footwell.
Cheers
John
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PostPost by: twincamman » Fri Aug 28, 2009 8:38 pm

there is a nissan f10 master cylinder I use on my Europa -----no pn though ---ed
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PostPost by: fatboyoz » Fri Aug 19, 2011 7:49 am

Johan,
Are you still happy with the Caterham tandem master cylinder? Is there enough clearance under the carbs to take the M/C cap off to check brake fluid level? Was it necessary to fit the proportioning valve to the rear brakes?
Thanks,
Colin.

sotul86 wrote:Hi
I?ve a tandem cylinder from a caterham it works lovely....planning to upgrade to +2 brakes in front but it woorks great even without them, also have a brake proportian valve for the brakes in the back. the cylinder is (Dual brake master cylinder Girling 74066147, parallel bore 11/16")
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PostPost by: Galwaylotus » Fri Aug 19, 2011 12:12 pm

Get the version with the remote reservoir. It's easier to keep an eye on the level and to top up when/if necessary. Very happy with my setup. I didn't use a proportioning valve as the mc bore is the same as original.
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PostPost by: Gray » Fri Aug 19, 2011 5:27 pm

Hi

I bought my tandem cylinder from Classicar Automotive, currently listed from ?125. A adjustable pushrod is a good idea.

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PostPost by: FOX5D » Sat Sep 03, 2011 8:55 pm

Hi Gray

Interesting, I'm thinking of getting the same.

What car is it on? Is it ok to top up? Has it got a warning indicator? No servo/2 servos?

Can you post a picture?

Cheers

Jim
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PostPost by: Gray » Sun Sep 04, 2011 6:44 pm

Hi Jim

Tandem cylinder fitted to S4, car still not on the road - currently fitting 26R arches. Engine not in so still to find out how easy to top up master cylinder, but resovoir is plastic so should be able to check more easily. Not intending to fit a servo - I have run Elans without before, I did buy a new servo thats sitting on the shelf, but would need two for a tandem system. I have got EBC groved disks and EBC pads, which are recommended by several people on the forum, I've used EBC pads before on another car and they seemed good, although squealed a bit.

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PostPost by: FOX5D » Sun Sep 04, 2011 8:59 pm

Thanks Gray, that's helpful. Has it got a low fluid warning switch?

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PostPost by: FOX5D » Wed Oct 05, 2011 5:33 pm

After much procrastination on my part, I have finally accepted the advice of fellow Elan owners.
I've decided to dispense with my brake servo and fit a tandem master cylinder (with 11/16 bore).

So, all I've got to do in the first instance is buy the master cylinder-should be a piece of cake after reading all the previous postings I thought. WRONG!

The chap at Classicar Automotive has been trying for several days to get me one without success. He says that the supply seems to have dried up very recently and he 'has hit a brick wall' at AP Racing. The one Tony Thompson supplies has a 13/16 bore and this is the same one that Caterham sell (part no 77176) as supplied by AP Racing.

"And so they rang the Electricity Board"

Has anyone got any suggestions for other sources?

Cheers

Jim
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PostPost by: Galwaylotus » Wed Oct 05, 2011 5:56 pm

Caterham Cars. 8)
The AP p/n is CP5615-2PRM100 unit (with reservoir) and the CP5615-3PRM100 unit (with elbows to suit a remote reservoir). The -3 is what you are basically looking for.
I believe it is made for Caterham so it should be available as a spare. It has a 0.70 inch bore. Ask them if it's Caterham part p/n 30B006A. Certainly looks like the one I installed on my S3. This one seems to be with reservoir but I'm sure you can take it off, get the elbow fittings, and mount remote reservoir(s).
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PostPost by: FOX5D » Wed Oct 05, 2011 7:18 pm

Thanks Bill

My preference is for an mc with integral reservoir (even if it is a bit fiddly to top up). But looking at your picture (attached), I'm not sure whether the reservoir might be too tall to fit under the carbs? Could you measure the height of it please?

Jim
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PostPost by: david g » Wed Oct 05, 2011 7:24 pm

has anyone looked at Carlisle Brake Products in Wales, lots of cylinders and tec drawings.david.
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PostPost by: FOX5D » Wed Oct 05, 2011 7:48 pm

Looks like only heavy duty industrial stuff on their website David.

Bill: I just searched for p/n 30b006a on the Caterham site, and it brought up their standard mc 2007 onwards (see below). This looks like just what I want with a nice flat reservoir. But, when I spoke to Caterham earlier today, they told me that the bore was 10/16 (0.625) not 11/16 (0.7).

I also tried the AP number on their website but the search brought up nothing.

So I will check with both of them tomorrow.

Jim
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