rear axle swap with disc brakes??
Hall Of Fame
Joined: Jul 2006
Posts: 12,204
Likes: 10
From: Gainesville, Ga.
the 2500 swap won't be a direct fit. you'll have to address different spring widths (2.5 vs 3), shackles, perches, etc. also probably/maybe the drive shaft? i wouldn't think the disk brakes would be any harder than the other items and it'd be a great addition.
Thread Starter
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Professional
Joined: May 2011
Posts: 198
Likes: 0
From: Waller, Tx
Three master cylinders are used in BR models. The
differences between' them concern cylinder bore size
and fluid reservoir capacity.
• The master cylinder in 1500 models has a 28.6
mm (1.125 in.) bore.
• The master cylinder in 2500 and 3500 models
has a 31.8 mm (1.252 in.) bore.
Although the master cylinders used in 2500 and
3500 models have the same bore size, they have dif- .
ferent piston stroke lengths and fluid reservoir
capacities.
This is from the 96 FSM, not saying you will have problems but something you may wanna look at.
All 1500 models and early year production
2500/3500 are equipped with rear drum brake assemblies.
They are two-shoe, duo-servo units with an
automatic adjuster mechanism.
Drum brake assemblies used:
² 1500 models: 11 x 2.25 in.
² 2500/3500 models: 12 1/8 x3.5 in.
From the 2001 FSM
differences between' them concern cylinder bore size
and fluid reservoir capacity.
• The master cylinder in 1500 models has a 28.6
mm (1.125 in.) bore.
• The master cylinder in 2500 and 3500 models
has a 31.8 mm (1.252 in.) bore.
Although the master cylinders used in 2500 and
3500 models have the same bore size, they have dif- .
ferent piston stroke lengths and fluid reservoir
capacities.
This is from the 96 FSM, not saying you will have problems but something you may wanna look at.
All 1500 models and early year production
2500/3500 are equipped with rear drum brake assemblies.
They are two-shoe, duo-servo units with an
automatic adjuster mechanism.
Drum brake assemblies used:
² 1500 models: 11 x 2.25 in.
² 2500/3500 models: 12 1/8 x3.5 in.
From the 2001 FSM
but what does all of this add up to?? would the master cylinder be sufficient? also then i would have 2500 rotors in the back and 1500 in the front? Unless maybe the ld ones would work all the way around??
Captain
Joined: Nov 2008
Posts: 742
Likes: 0
From: Virginia Beach, VA
I am fairly certain toy can put the dual piston brakes from a 3500 on the 1500, or maybe it was from the 2500. The larger bore means more fluid flows thus increasing pressure.
If it were me doing this I would completely change over the entire system. The lines should be the same size (don't quote me on that) where you would have your issues would be wheel cylinders, and proportion valves. That us if you go to the lager MC, with the larger brakes I would think you would not gain much using a smaller MC.
Go to the DIY section, you can DL this and the parts books for your trucks.
If it were me doing this I would completely change over the entire system. The lines should be the same size (don't quote me on that) where you would have your issues would be wheel cylinders, and proportion valves. That us if you go to the lager MC, with the larger brakes I would think you would not gain much using a smaller MC.
Go to the DIY section, you can DL this and the parts books for your trucks.
Last edited by JackJ; Aug 10, 2011 at 12:46 PM.
Thread Starter
|
Professional
Joined: May 2011
Posts: 198
Likes: 0
From: Waller, Tx
I am fairly certain toy can put the dual piston brakes from a 3500 on the 1500, or maybe it was from the 2500. The larger bore means more fluid flows thus increasing pressure.
If it were me doing this I would completely change over the entire system. The lines should be the same size (don't quote me on that) where you would have your issues would be wheel cylinders, and proportion valves. That us if you go to the lager MC, with the larger brakes I would think you would not gain much using a smaller MC.
Go to the DIY section, you can DL this and the parts books for your trucks.
If it were me doing this I would completely change over the entire system. The lines should be the same size (don't quote me on that) where you would have your issues would be wheel cylinders, and proportion valves. That us if you go to the lager MC, with the larger brakes I would think you would not gain much using a smaller MC.
Go to the DIY section, you can DL this and the parts books for your trucks.
Captain
Joined: Nov 2008
Posts: 742
Likes: 0
From: Virginia Beach, VA
Rear Disc Brake Rotor
2500/3500
323.5x30 mm (1.18 in)
Front Disc Brake Rotor
1500 4x2
304×30 mm (11.96×1.18
in.)
Wheel Cylinder Bore Size
1500
25.4 mm (1.00 in.)
Wheel Cylinder Bore Size
2500/3500
25.4 mm (1.00 in.)
Brake Booster
Type
1500/2500 Gasoline
Engines
Vacuum Dual Diaphragm