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Joined: Jul 2007
Posts: 26,759 Likes: 424
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 26,759 Likes: 424 |
They are effectively two pistons in line using one fluid reservoir not as used to be the case with two seperate reservoirs & pistons on some cars.
I guess if the seal fails in one you lose one side & if it leaks the fluid can run out affecting both circuits. I would have thought before that the driver would notice.
If you are really unlucky the seals on both pistons could fail. I also thought in the CX case that the casting was porous so pressure would leak and not drive the brake calipers.
But having driven several P4s and one P6 I found the brakes very poor with a long travel and little feel.
JohnV6 2022 CX Plus Four 2025 MG ZS EV aka Trigger
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Joined: Dec 2008
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Roadster Guru Member of the Inner Circle
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Roadster Guru Member of the Inner Circle
Joined: Dec 2008
Posts: 21,871 Likes: 168 |
The chances are that if one seal fails they will both fail. A single fail will increase pedal travel dramatically, and if you only had rears working with long travel, you may not have time to react before hitting the scenery.
I've had one total brake failure on a single circuit car, when on first application the pedal went to the floor. It happened on my drive, which is uphill to the road and at less than 5mph. It wasn't pleasant.
DaveW '05 Red Roadster S1 '16 Yellow (Not the only) Narrow AR GDI Plus 4
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Joined: Dec 2011
Posts: 613 Likes: 15
Talk Morgan Regular
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Talk Morgan Regular
Joined: Dec 2011
Posts: 613 Likes: 15 |
Called my dealer ,they have received 8 kits , they have made 3 sold cars in the showroom , other cars will be fixed this week . Normally they should receive more kits next week and call me for my car.
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Joined: Jan 2022
Posts: 91 Likes: 2
Just Getting Started
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Just Getting Started
Joined: Jan 2022
Posts: 91 Likes: 2 |
I But having driven several P4s and one P6 I found the brakes very poor with a long travel and little feel.
Indeed, I actually complained about long brake travel and high push forces on collection of my Plus Four. Was told that was 'normal'. Well, normal maybe to a Morgan. Hopefully the new master cylinders will fix that, but I doubt it. Anyone had theirs fixed yet?
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Joined: Jul 2007
Posts: 26,759 Likes: 424
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 26,759 Likes: 424 |
Every trad mog i have owned has had "normal" pedal travel
JohnV6 2022 CX Plus Four 2025 MG ZS EV aka Trigger
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Joined: Jun 2015
Posts: 1,961 Likes: 43
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Jun 2015
Posts: 1,961 Likes: 43 |
I But having driven several P4s and one P6 I found the brakes very poor with a long travel and little feel.
Indeed, I actually complained about long brake travel and high push forces on collection of my Plus Four. Was told that was 'normal'. Well, normal maybe to a Morgan. Hopefully the new master cylinders will fix that, but I doubt it. Anyone had theirs fixed yet? Post #749155 on here on 23/07/22 from Ross in Aberdeenshire says he had his fixed and brake appeared to be firmer on the drive home.
Doug 2011 Plus 4 in Rich Maroon
1972 750 “ComDom” sprinter 1958 Triton 650 1992 Triumph Trophy 900
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Joined: Feb 2016
Posts: 7,941 Likes: 218
Talk Morgan Guru
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Talk Morgan Guru
Joined: Feb 2016
Posts: 7,941 Likes: 218 |
Interesting chat with Dan at Krazy Horse today. They have received 4 out of the 30 brake fix kits they need to fix customers cars. His understanding is they are being delivered pro-rata to full number each dealer needs.
Subject drifted to the radiator issue. Latest solution revolves around thermal shock in engine when thermostat opens suddenly as turbo kicks in, with hot coolant aided by exhaust manifold within head, stressing radiator as it hits cooler. The solution is a new complex swirl pot with fresh plumbing to same, to mix hot and cold before rad. At least that's what I understood. The factory are performing this fix and have a large team engaged for quick turnaround.
As if not enough a lower wishbone nut has been found under-spec'd so that's due for replacement as well.
Richard
2018 Roadster 3.7 1966 Land Rover S2a 88 2024 Royal Enfield Guerrilla 450 1945 Guzzi Airone
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Joined: Jul 2007
Posts: 28,428 Likes: 180
Salty Sea Dog Member of the Inner Circle
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Salty Sea Dog Member of the Inner Circle
Joined: Jul 2007
Posts: 28,428 Likes: 180 |
That's what I understood re: radiator Richard.
Graham (G4FUJ)
Sold L44FOR 4/4 Giallo Fly '09 Gen2 MINI Cooper ragtop '90 LR 90 SW
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Joined: Feb 2010
Posts: 1,415
Has a lot to Say!
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Has a lot to Say!
Joined: Feb 2010
Posts: 1,415 |
That's what I understood re: radiator Richard. I’d be looking at how the radiator is mounted…..
Simon @ Sifab.co.uk
Sifabtemporary@gmail.com
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Joined: Jun 2015
Posts: 1,961 Likes: 43
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Jun 2015
Posts: 1,961 Likes: 43 |
That's what I understood re: radiator Richard. I’d be looking at how the radiator is mounted….. Exactly my thoughts all along… I simply do not buy into the swirl pot idea!
Doug 2011 Plus 4 in Rich Maroon
1972 750 “ComDom” sprinter 1958 Triton 650 1992 Triumph Trophy 900
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