Crap to Cream, MGB brake line circuits, which way to go? Advice please
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- Опубликовано: 6 сен 2024
- Sorting out the brake line circuit and which way to go forward, open to suggestions and advice on the is one.
When making suggestions please be conscious of what parts are still available.
Any suggestions ideas are welcomed.
Thanks in advance no doubt I’ll get some good suggestions.
I found in my conversion that fitting the dual master cylinder, connecting the brake pipe is very difficult so I opted for a single standard master cylinder and re ran the pipes as per a 70s model with no power booster.
If you are running new brake lines the conversion is simple. I have had no problems with my brakes for the last 20 years.
I have a 72 model roadster I converted to right hand drive rebuilt car from scratch in 1996
Rob Gray (Melbourne.)
Hi Rob, ok great thanks for your comments, yup I struggled for a while then just cut the old lines, I was just a bit over it. Single line it is, and if I get keen I might modify later on when I have nothing else to do. Again thanks for the feedback 👍
My 1970 doesnt have a servo but the 74 that i broke for spares had the same peddle box as yours and the servo where your washer bottle sits currently.
And the connector valve thing is on the right side like you said. 👍
I also had a 1974 MGB at one point and it had the same set-up that you talk about with the independent servo unit. I’m hoping that the chap I’ve found who has a late MGB pedal box comes good, the job will suddenly become a little easier. Here’s hoping. Thanks for the comments.
Hi Marty, Personally I think you will miss the servo assistance after driving your 77. I would strip out what you have from the LHD or it will be like the Frankenstien wiring you have inherited, then either go for the stock remote servo layout OR if you do happen to find a later dual circuit pedal box, go for that. The later layout is much simpler.
I forgot to comment on your last video about the wiring. As others have pointed out, that Pektron unit is the seatbelt interface module. As this was installed in a North American model it would have prevented the car from starting until the seatbelts were buckled. There were occupancy pressure switches in the seat squabs adding further control.
There is a smaller and simpler Pektron unit buried behind the dash on your 77 model. The flashing fasten belts light is extinguished when the buckle connects to the stalk as there is a controlling microswitch buried inside.
To answer your question about the internal wiring loom route, when I stripped out the loom from my 77 roadster it was attached to the square section strengthening bar immediately behind the dash. This was definitely as it left the factory as it still had an early version of zip ties made of rubber attaching it, along with a sticker identifying the manufacturer.
Hope this helps.. Looking forward to the next installment 😉.
Hi Carsten, a wealth of information as usual, thank you. I think I’ve managed to find a late brake pedal set-up I’m just waiting for conformation, I like simple. Pektron gone. As usual thanks for all the comments and insights.
The late twin circuit with built in servo is the best solution.
My ex US B had the same setup as your car originally and I went single circuit no servo. I now look upon that as a mistake.
If I could get my hands on a second hand late B pedal box that would be an option however they seem to be as rare as rocking horse poop. I’ll have another look around but the single circuit seems to be the easiest option, thanks for your response definitely worth considering.
I am also running all new brake lines on both of my MGBs. I suggest that the brakes on both cars should be run as if from factory for my country ( left hand drive). I will run dual lines for my brakes. The servo is not as important to me as the dual lines.
I have a 71 GT and a 74 steel bumper roadster.
Interesting, understand why you are doing what you are doing, interesting comment around the servo, I’ll have to see what else comes back.
The servo on my 77 B was faulty so I haven’t really experienced the difference between servo and non -servo
Personally, I'd go with whatever was the standard issue for your country in 1974.
Hi David, great suggestion, and that looks to be the way I’m heading. It’ll certainly make the installation a lot easier than the removal. Parts have been ordered. Thanks for the comment 👍👍