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#77608 05/15/2007 3:18 AM | Joined: Sep 2004 Posts: 168 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2004 Posts: 168 | I've just put the new dual mc on my 47 AD, and have begun to plumb the lines. Up front will be the 5 lug disc kit. Questions:
1. Do I run the front R line under the radiator or above the rear of the trans?
2. What is a banjo fitting, and do I need them for 75 Lemans calipers?
3. I think the mc is above the calipers, so I'm not using residuals at this point. Is that alright?
4. I've got the lines worked out I think. Common sense tells me to T them where appropriate and join accordingly. Am I missing anything?
Thanks as always,
Jason
Your lack of preparation is not my emergency
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#77609 05/15/2007 4:09 AM | Joined: Oct 2006 Posts: 4,983 Master Gabster | | Master Gabster Joined: Oct 2006 Posts: 4,983 | I would run right front across under the radiator. T it at the left front. I don't know about the Lemans but assume it would be like most GM disc brakes. Those I have familiarity with use banjo fittings. If the MC is above the calipers no need for a residual valves.
Sounds like you've got it all worked out. Good luck.
~Jim
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#77610 05/15/2007 11:19 AM | Joined: Sep 2004 Posts: 168 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2004 Posts: 168 | Thanks. I was actually pretty timid about it until I got dirty. I think I've got it pretty easy for my first time, because the engine and trans are out right now.
Regards,
Jason
Your lack of preparation is not my emergency
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#77611 05/15/2007 5:17 PM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | The MC might be above the calipers on level ground, but I would check it on a grade. I would bet that it no longer is on a hill. You don't want to crest a hill and have no front brakes.
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#77612 05/15/2007 6:35 PM | Joined: Mar 2005 Posts: 1,029 Member | | Member Joined: Mar 2005 Posts: 1,029 | Some MCs have internal resisdual pressure valves. Vibration can cause the pucks to back away from the discs, so a two pound resisdual valve is a good idea for the front. | | |
#77613 05/15/2007 7:42 PM | Joined: Sep 2004 Posts: 168 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2004 Posts: 168 | I just ordered mine, and will plumb them in accordingly. Thanks
Your lack of preparation is not my emergency
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#77614 05/16/2007 3:50 AM | Joined: May 2005 Posts: 8,877 . | | . Joined: May 2005 Posts: 8,877 | I have upgraded brakes on two trucks with the master under the floor. A 52 3800, and a 61 ford 350. Both trucks now have disc brakes at all 4 wheels, and both trucks have a pair of 2 lb residual pressure valves.
For the brake line to go to the right front, I ran mine along and on the back side of the transmission crossmember, as the original was.
Both front lines come from their own places on the proportioning valve, so no T-fittings needed.
The proportioning valve has only one line going to the rear, then it branches off just after the flex line to the housing.
Grigg | | |
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