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Dual reservoir master cylinder rubber vs hard lines
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57Groucho
Posted 2019-04-12 8:15 PM (#580798)
Subject: Dual reservoir master cylinder rubber vs hard lines



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Posts: 121
100
Location: Minneapolis
I'm swapping to a dual reservoir master cylinder on my 57 Fireflite.
The factory master has a rubber line coming off of it which then goes to hard line. I'm assuming this is because the body and frame will move independently of one another ever so slightly. If I go straight to hard lines like a more modern car will my lines fatigue and crack/leak? I thought about putting a loop or two in the lines near the master but space is at a premium there and I don't know if I can pull it off... what have others done in this situation?

-Dan
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56D500boy
Posted 2019-04-12 8:25 PM (#580799 - in reply to #580798)
Subject: RE: Dual reservoir master cylinder rubber vs hard lines



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Location: Lower Mainland BC
I think most people in that situation put a coil (or two) in the hardlines to absorb the differential movement between the body and the frame. Something like this:





(DiscBrakeConversionPBBoosterAndDualMCOn55Dodge.jpg)



Attachments
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Attachments DiscBrakeConversionPBBoosterAndDualMCOn55Dodge.jpg (192KB - 15 downloads)
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57Groucho
Posted 2019-04-12 8:31 PM (#580800 - in reply to #580798)
Subject: Re: Dual reservoir master cylinder rubber vs hard lines



Veteran

Posts: 121
100
Location: Minneapolis
That's what I had in mind but with the master mounted directly to the firewall with the factory booster right above it there's very little space to work with. I'll just have to figure it out. Thanks for responding.

-Dan
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57Groucho
Posted 2019-04-16 9:43 PM (#580996 - in reply to #580798)
Subject: Re: Dual reservoir master cylinder rubber vs hard lines



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Posts: 121
100
Location: Minneapolis
This is what I came up with.



(20190416_201443-604x805.jpg)



(20190416_201323-756x1008.jpg)



Attachments
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Attachments 20190416_201443-604x805.jpg (176KB - 17 downloads)
Attachments 20190416_201323-756x1008.jpg (223KB - 14 downloads)
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