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Re: New Viper brake kit
[Re: AndyF]
#2632845
03/14/19 11:07 PM
03/14/19 11:07 PM
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Joined: Mar 2019
Posts: 2 Seattle, Wa
Dartwinism
member
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member
Joined: Mar 2019
Posts: 2
Seattle, Wa
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No need to repop FMJ spindles, but yes Fatman Fab makes a dropped one.
The FMJ spindles have been in production from 1973 till 1989 in B, F, M, J, R bodies.
The A body spindle is 73, 74, 75, 76.
Probably 15 FMJ spindles for every A spindle made.
There are a couple of different "FMJ" knuckles. I use the later style which is lighter weight. Either will work, but the latest ones are 1.5 lbs lighter. I think some engineer at Mopar finally learned how to use finite element analysis in the 80's since the last version of the knuckles shows that they took weight out of areas with no stress. I have read that in general the "FMJ" knuckles are lighter than the 73-76 A body knuckle but are you saying that later versions of the "FMJ" knuckles are lighter still? If so, what years/models does one need to target for these even lighter 'FMJ" knuckles?
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Re: New Viper brake kit
[Re: AndyF]
#2632847
03/14/19 11:16 PM
03/14/19 11:16 PM
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Joined: Mar 2019
Posts: 2 Seattle, Wa
Dartwinism
member
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member
Joined: Mar 2019
Posts: 2
Seattle, Wa
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I got the hoses installed. The hose brackets on my car were a D shape so the new hoses wouldn't fit. I didn't want to drill out the frame bracket so I sent the hoses to the machine shop and had them machined to a matching D shape. Other than that it was a simple bolt in operation! The hubs shown in the picture with this post look like they are made of steel and have a factory style grease cap. I assume they are not the hubs that come with the kit. What is the story with them? Are they machined down hub/rotors?
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Re: New Viper brake kit
[Re: Dartwinism]
#2633200
03/16/19 12:10 AM
03/16/19 12:10 AM
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Joined: Jan 2003
Posts: 31,027 Oregon
AndyF
OP
I Win
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OP
I Win
Joined: Jan 2003
Posts: 31,027
Oregon
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I got the hoses installed. The hose brackets on my car were a D shape so the new hoses wouldn't fit. I didn't want to drill out the frame bracket so I sent the hoses to the machine shop and had them machined to a matching D shape. Other than that it was a simple bolt in operation! The hubs shown in the picture with this post look like they are made of steel and have a factory style grease cap. I assume they are not the hubs that come with the kit. What is the story with them? Are they machined down hub/rotors? That is true, I used a set of steel hubs so I could move the car around in the shop. Those are steel hubs left over from my Coronet. I used steel hubs when I designed the brake system for the Coronet. I prefer steel hubs since it is easier to maintain a tight tolerance press fit for the bearing race in steel but Doctor Diff and Baer both use aluminum for their hubs. I think Wilwood also uses aluminum for their hubs. When I made hubs I used steel.
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