Lotus Elan Central

by **Specky** » Sun 24.02.2008, 20:57

Monty,

Any chance of a few photo's of your spare master cylinder..

for comparrison purposes... and the pottential for repair...

TTFN

by **surfboardfiller** » Sun 24.02.2008, 21:10

Monty wrote:
surferphil wrote:What's wrong with the Unipart BMC Monty?

Well if the one on ebay is the same then it's less than half the price you paid for yours So i would think that'll be a good enough reason

More alternatives the better

Mine is a lot cheaper than ploughing into the back of a car, while I wait for a BMC to arrive at a bargain price! :wink:

I use my M100 all the time, so it was a question of buying a part and (paying someone else for) fitting it.
If you have time, it maybe worth finding an upgrade? I'd be interested for the Fast Cat.

by **Monty** » Sun 24.02.2008, 21:20

I`m in no rush to buy one (money is tight at the mo as i`ve got other parts to pay for :wink:

) but next time i do the head gasket (cause i`m sure i must be due one :roll:

) think i`ll change it as my brake pedal is softer than stock but don`t know if thats just down to the 4 pot calipers.

Specky wrote:Monty,

Any chance of a few photo's of your spare master cylinder..

for comparrison purposes... and the pottential for repair...

TTFN

Ok, i`ll dig it out and take a few pics

by **Specky** » Sun 24.02.2008, 21:23

Cool...

TTFN

by **surfboardfiller** » Sun 24.02.2008, 21:43

Monty wrote:..... think i'll change it as my brake pedal is softer than stock but don't know if thats just down to the 4 pot calipers.

I would expect so, more fluid is moving to fill those pots and it's a small cylinder, I want to go to AP's but seriously doubt the cylinder has got enough in it. There's too much pedal travel for me, with the original callipers!
I want to upgrade the whole system. If you are going to replace it anyway, then it's the perfect opportunity! :-D

by **Monty** » Sun 24.02.2008, 21:49

surferphil wrote:
Monty wrote:..... think i'll change it as my brake pedal is softer than stock but don't know if thats just down to the 4 pot calipers.

I would expect so, more fluid is moving to fill those pots and it's a small cylinder, I want to go to AP's but seriously doubt the cylinder has got enough in it. There's too much pedal travel for me, with the original callipers!
I want to upgrade the whole system. If you are going to replace it anyway, then it's the perfect opportunity!

Forgot to mention, another reason is my N/S front always locks up 1st and i know candles has the same problem

Wouldn`t mine uprading but need to find ou what other model is the same design but with a bigger piston/cylinder

Anyways here`s a couple of pic`s of old pinky1`s BMC, it does look like it`s a sealed unit

let me know if you want any more pics

by **surfboardfiller** » Sun 24.02.2008, 22:07

Monty wrote:Forgot to mention, another reason is my N/S front always locks up 1st and i know candles has the same problem Wouldn't mine uprading but need to find ou what other model is the same design but with a bigger piston/cylinder

Yeh, I agree!

Maybe it requires a servo change too?

by **Specky** » Sun 24.02.2008, 22:09

Monty,

is that a seal or a cirlip on the mating face behind the white grease?

TTFN

by **nitroman** » Mon 25.02.2008, 00:32

On my TR8 the guy at the Lucas/Girling store that used to be here xrefed the BMC to one from an SD1. It bolted right-in but I had to change the brake-pipes as the BMC 'outs' were the male/female opposite. The cylinder was massively larger and I only needed to tap the pedal; hardly any pedal movement at all was required. He needed only the number from the BMC to xref it.

What is the make & number(s) on the pictured BMC?

by **Candles** » Mon 25.02.2008, 19:52

Well that'd be awesome. As Monty says, my NSF wheel always locks first, and seeing as I have the car three feet in the air with the steering rack hanging out, it has to be a good time to try a new one!

Candles.

by **Monty** » Tue 26.02.2008, 12:44

Mr Specky

I`ve manage to remove the inners, the seal at the end is hiding a clip but it was difficult to remove. Another thing is i`m quite supprised how clean it was inside and the seals look in great condition so i`d be supprised if many of these fail

These are the Numbers/letters stamped on the underside of the BMC

2383 FBB 2
22

by **GeoffSmith** » Tue 26.02.2008, 14:05

Monty wrote:I've manage to remove the inners

Unserviceable - bollocks. Go for it Dave.

by **Specky** » Tue 26.02.2008, 14:42

Good Drills Monty.... :smt023

That was what I expected to see, and that's how I expected it to come apart...

so 50% of the way there... now to source the spares... :roll:

You've gotta love this forum... Problems, solutions and far to many engineers who just don't know when to give up... :lol:

A hundred quid for a new one. I ask you... Any one want to buy some magic beans..

TTFN

by **Monty** » Tue 26.02.2008, 18:59

The BMC that was on ebay which i posted on the previous page has the wrong Bore size :roll:

So i`ve edited that post and deleted the link

So back to the drawing board, this is the only other one i could fine
www.oscaro.com/fiche.asp?ID_OSC_LEVELS=2701&ID_OSC_TYPES=18551&ID_GENERIC_ARTICLES=258&ID_ARTICLES=298530

by **DeeAitch** » Tue 26.02.2008, 21:55

Looks promising Monty :-D

According to my Delphi catalogue Opel / Vauxhall part number 558107 = Delphi LM50087 = Lucas PMH 392
All have Dia 22.2 bore
Listed as:
Cavalier 2.0i (code EF without ABS) '88-'95
Vectra A 2.0i (code EF without ABS) '92-'95

I'll see if I can get a price from the local Partco or Andrew Page :wink:

by **Monty** » Wed 27.02.2008, 01:54

More part numbers here www.gglotus.org/ggpart/m100xref.htm

AC Delco part no 174-812 (standard)
Durastop 18M478

On the Delco site came up with 198.208.187.182/internet/VehiclePartFits.jsp

1993 PONTIAC LEMANS SE L4 1.6L 1588cc 98cid GAS FI N Engine VIN = 6
1993 PONTIAC LEMANS VALUE LEADER L4 1.6L 1588cc 98cid GAS FI N Engine VIN = 6
1992 PONTIAC LEMANS VALUE LEADER L4 1.6L 1588cc 98cid GAS FI N Engine VIN = 6
1992 PONTIAC LEMANS L4 1.6L 1588cc 98cid GAS FI N Engine VIN = 6
1991 PONTIAC LEMANS LE L4 1.6L 1588cc 98cid GAS FI N Engine VIN = 6
1991 PONTIAC LEMANS LE AEROCOUPE L4 1.6L 1588cc 98cid GAS FI N Engine VIN = 6
1991 PONTIAC LEMANS VALUE LEADER L4 1.6L 1588cc 98cid GAS FI N Engine VIN = 6
1990 PONTIAC LEMANS LE L4 1.6L 1588cc 98cid GAS FI N Engine VIN = 6
1990 PONTIAC LEMANS LE AEROCOUPE L4 1.6L 1588cc 98cid GAS FI N Engine VIN = 6
1990 PONTIAC LEMANS VALUE LEADER L4 1.6L 1588cc 98cid GAS FI N Engine VIN = 6
1990 PONTIAC LEMANS GSE L4 2.0L 122cid GAS FI N Engine VIN = K
1989 PONTIAC LEMANS AEROCOUPE YL L4 2.0L 122cid GAS FI N Engine VIN = K
1989 PONTIAC LEMANS GSE L4 2.0L 122cid GAS FI N Engine VIN = K
1989 PONTIAC LEMANS SE L4 2.0L 122cid GAS FI N Engine VIN = K
1989 PONTIAC LEMANS L4 2.0L 122cid GAS FI N Engine VIN = K

198.208.187.182/internet/VehiclePartFits.jsp?autosel=A&part=174-812

On www.rockauto.com/ the Delco one is $250 but there other alternatives, but need to make sure the bore size is correct. Anyways i`ve had enough for tonight :roll:

by **DeeAitch** » Wed 27.02.2008, 16:11

DeeAitch wrote:I'll see if I can get a price from the local Partco or Andrew Page

Andrew Page "A cavalier thatold" :shock:

Very sorry but it will be £157 + vat sir :evil:

by **Monty** » Wed 27.02.2008, 20:43

I`ve looked through RockAutos and it`s possible these are what were looking for as the bore looks correct 7/8" = 22.22mm

1993 PONTIAC LEMANS SE 1.6L 1588cc 98cid L4 TBI (6) : Brake/Wheel Hub : Master Cylinder

BECK/ARNLEY Part # 0728751
2631 Stamped On Top Of Brake Booster [Wholesaler Closeout -- 30 Day Warranty] $88.99

RAYBESTOS Part # MC39869 {Professional Grade Bore Size=7/8" Number of Ports=4 Primary Outlet Size=M12x1 Secondary Outlet Size=M10x1}
Power Brakes $109.79

A-1 CARDONE Part # 112561 {[Master Cylinder] Reman.} $117.79

ACDELCO Part # 18M478 {#18030720}
CYLINDER,BRK MAS DURAST0P; 7/8 CYLINDER BORE-WITH POWER BRAKES $252.99

DORMAN Part # M39869 {First Stop}
w/Power Brakes; Bore = 7/8"
* Non-stock item--shipping delayed up to 2 business days $141.79

The other question is do the USA use the same thread pattern for the brake pipe conections

by **Monty** » Thu 28.02.2008, 00:29

Off the list above found this one on the US ebay cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=34199&viewitem=&item=300190510962

$24.99 :shock:

just show how us Brits get ripped off :twisted:

by **ESM** » Sun 02.03.2008, 10:03

Monty, I think the part numbers from the golden gate Lotus site were taken from the first post I put up here at the start of this thread. I'm now worried that the threads on some of the ports are wrong even though its otherwise the same.

In short those numbers may NOT offer an easy bolt on solution.... If you can confirm the original master cylinder has 2xM10 & 2xM12 fittings then they are probably ok, if not then its back to the Vauxhall/Lucas parts

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