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Post by Penguin45 on Aug 30, 2015 23:09:59 GMT
It's a good looking car and a left hand drive "S" must be a rare machine.
Chris.
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Post by deconstruction on Sept 1, 2015 16:51:10 GMT
The photograph of the engine-compartment does not show a brake-servo. Are these still very difficult?
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Post by dave1800 on Sept 2, 2015 0:41:40 GMT
It's difficult to see in the photo but I believe the LH drive cars had a combined m/s and servo as in modern cars. It looks as though it is there if you follow the rubber pipe from the inlet manifold. I may be wrong as I am working on my old computer with a poor screen at present. I understand these servos are very hard to obtain but maybe there are others that can be fitted. Perhaps others with LH drive cars can confirm? regards David The photograph of the engine-compartment does not show a brake-servo. Are these still very difficult?
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Post by tommydp on Sept 2, 2015 3:21:30 GMT
Dave is correct! It has the Girling Supervac servo, and the master cylinder is bolted to the servo. Just like all Norwegian and Swedish crabs from around 1968 (all mk 2 cars, and also some of the later mk 1). Perhaps these were fitted to all lhd cars.
They might be difficult to find, however I've never needed a replacement. They seem to be very reliable. The only trouble I've had is a leaking rubber gasket between the one way valve and the servo, and a valve which rattles at idle, which have been easily fixed. Other than that, the only thing I've done to them is to paint them black:-) All 1800s I've had have held pressure for a very long time. I've had one (earlier) 1800 with the Powerstoop servo, and that was another story.. Among other problems it occasionally drew brake fluid into the inlet manifold. Oh dear.. In the end I was about to change it for a Supervac servo, but car was suddenly sold.
Tommy
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Post by dave1800 on Sept 2, 2015 12:28:50 GMT
Tommy is the combined m/s and servo still a single circuit system? I wonder how difficult it would be to convert a RH drive vehicle to use a more conventional unit rather than the expensive remote version? Has anyone here tried?
regards
David
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Post by Penguin45 on Sept 2, 2015 14:03:34 GMT
I *think* you can use the Princess combi master/servo unit with minimal modifications. You lose the "G" valve to the rear brakes though.
Chris.
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Post by tommydp on Sept 2, 2015 14:52:57 GMT
It is a single circuit system and includes the G valve. I believe early UK Marinas and early Maxis also used this servo and the same master cylinder, with the single circuit.
Dual circuit brakes were required by law here in 73 I think, by which time the 1800s were no longer imported.
I've seen a Norwegian 1800 which had been modified to take a Marina, Maxi or possible Princess later servo with dual circuit cylinder. Don't remember the details. I do remember it had the G valve present though.
As far as I can remember the only modification was the new servo was mounted on the original mounting at the bulkhead. Just a matter of drilling 4 holes in this mounting I guess, as the servo is smaller in diameter.
Not sure if it's down to the servo, but I always found the 1800 brakes far superior to the Marina and Maxi.
Tommy.
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Post by dave1800 on Sept 3, 2015 1:01:22 GMT
I'm being dumb (nothing new there but why do you lose the "G" valve - I assume one circuit goes to the front and the other to the rear as in the Oz PBR brakes I believe. David I *think* you can use the Princess combi master/servo unit with minimal modifications. You lose the "G" valve to the rear brakes though. Chris.
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Post by Penguin45 on Sept 3, 2015 8:45:35 GMT
European spilt circuit brakes are usually front off/rear near and front near/rear off, so you would need two "G" valves.
Chris.
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Post by dave1800 on Sept 3, 2015 9:39:14 GMT
Thanks Chris. I wonder if it would be safer to connect the circuits to both front and both rear respectively keeping the "G" valve especially if you suspect you have a MK11 car with negative caster to avoid braking instability. Many modern cars have significant positive caster which isn't an issue with power steering. Not sure how the Oz PBR dual circuit brakes are connected. I do appreciate how little braking is available from the rear wheels though with so much of the weight on the front wheels.
regards
David
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Post by threelitre on Sept 3, 2015 19:50:09 GMT
As stated all LHD cars had this brake servo fitted. At times Tony had some new ones on sale, which always found buyers quite quickly. Two went to my place, because we had two broken ones. After all those years mostly resting on the same position the inner diaphragm developed crack and leaks the vacuum as soon as the pedal is touched - quite interesting when driving it! We tried to fix one with vulcanising tape as we did not find a replacement for a longer time. But that did not last longer than about 2000kms - during a journey across Yorkshire Dales I 'switched' it off by inversing the external one way valve that was added because the original valve did not work anymore.
Dual circuit Landcrabs (and Maxis) use a front-rear split that does incorporate the G-valve. Same for dual circuit 1100s, but these did not have a brake servo.
Regards,
Alexander
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Post by dave1800 on Sept 4, 2015 0:24:00 GMT
Alexander, thanks for the clarification. If I recall correctly you wrote about losing the servo in the LOCI magazine. It can't have been much fun with the hills in North Yorkshire. Good job it wasn't near Tommy's home in Norway.
regards
David
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Post by Nick RS on Sept 13, 2015 10:38:47 GMT
One in Sweden Here. May well have had a lot of hard work done to it already. Google translate describes it thus: It is never too late to give up. This Wolseley 18/85 is the luxury version of the Austin / Morris 1800 has been in my workshop since 2005 and nothing has happened since then because of various Historic Race project. It has been completely nerplockar and PLĂ…TREN, all rust repaired, painted and reassembled with new or refurbished parts. New brake lines, remanufactured brake and koppllingscylindrar and brakes, new wheel bearings, new electrical system, etc. The motor honad with new rings, new bearings, the crank balanced flywheel eased, top lightly vented and completion, new "mild road" camshaft, new alternator and starter . The car works mechanically, starts easily and can run. All the electricity works, new deck on sandblasted and powder coated rims. What remains is to put in boxes, assemble interior, installing the ceiling and door moldings. All parts are in addition to the mats. Decent leather interior and instruments from the MGB with tachometer. An easy project for the handy. Become a rare veteran when it comes out on the road. Actually, I would ask about 100 000 - to get back disused money but sell to the highest bidder if it is somewhat reasonable. No replacements have enough projects already. And friends. Email if you want more pictures of the renovation.Nick
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Post by Penguin45 on Sept 13, 2015 11:40:23 GMT
Couple of pics of above car. Further to the brakes discussion, this one has the Girling Powerstop IIB over on the left. Chris.
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Post by dave1800 on Sept 13, 2015 12:16:54 GMT
A UK car from 1966 would have had the earlier servo I believe.
David
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