Post by classicjackets on Nov 3, 2015 18:41:01 GMT -8
As the title says, if you've done an axle or ring swap post up some pictures and info about it.
I'm looking forward to getting some 3.31's swapped in when I swap my engine out - the final gearing will be much better for highway cruising than what I have now with the 4.11's.
To copy Paste from Brueske, here's what should work in the stock rear axle if you just want to change gears:
"Only the Mazda B2000 up to 1984 model year. When out, some will try to pass off gears from a 1985 model (No such thing, NO 1985 Models in USA). If putting 3.31 gears in a 1st gen. series , a slight notch must be made in the housing face at the 11 o'clock area abouts . The ring gear is quite larger, and housing was never planned for it . But mock up, Mark, clean-up, and set in. Some Couriers, '79 -'82 had 3.31 gears too"
So, when scanning junkyards or car-part for gears, there's what you should be looking for. Apparently, the rear differential housing is different for couriers (at least 1st gen) and gears don't swap in from much else.
For anybody who stumbles across a B2000 in the junkyard and wants to check the rear ratio, here's a down and dirty method (copied, that's why I left the source's name in there!)
"Tools needed
A flat surface
Masking tape
4 feet of string
Chalk (for marking)
Hydraulic jack with stands (if needed)
Simple five steps
Park your rig on a flat surface.
Tape one end of the string to the bottom (6 o’clock) of the rear drive shaft. Using a clock method to determine location, bottom would be 6 o’clock, and the top would be 12 o’clock.
Mark the rear tire where it touches the ground.
Now push your rig forward so that the tire make one full rotation
Look at string on the drive shaft.
The string will wrap around the drive shaft and the amount of wrap it has will tell you roughly what gear ratio you got.
Example:
If the string is wrapped around the drive shaft 3 ½ times than you have the 3.50 to 1 gear ratio, which came stock behind a 302 V8.
If you got the string wrapped around 4 ¼ times than it will most likely be 4.11 to 1 gear ratio.
If it is wrapped 4 ½ times than it will be 4.56 to 1.
If it is wrapped 4 ¾ times than it will be 4.88 to 1.
If you don’t have room to move the rig, here is another way to do it. Instead of pushing the rig just jack up on rear tire and rotate it one full turn with vehicle in neutral. Count the number of wraps and times it by 2. The total is what you use to figure the gear ratio. Note this procedure will only work with open diffs.
by Honorio Madriaga"
I'm looking forward to getting some 3.31's swapped in when I swap my engine out - the final gearing will be much better for highway cruising than what I have now with the 4.11's.
To copy Paste from Brueske, here's what should work in the stock rear axle if you just want to change gears:
"Only the Mazda B2000 up to 1984 model year. When out, some will try to pass off gears from a 1985 model (No such thing, NO 1985 Models in USA). If putting 3.31 gears in a 1st gen. series , a slight notch must be made in the housing face at the 11 o'clock area abouts . The ring gear is quite larger, and housing was never planned for it . But mock up, Mark, clean-up, and set in. Some Couriers, '79 -'82 had 3.31 gears too"
So, when scanning junkyards or car-part for gears, there's what you should be looking for. Apparently, the rear differential housing is different for couriers (at least 1st gen) and gears don't swap in from much else.
For anybody who stumbles across a B2000 in the junkyard and wants to check the rear ratio, here's a down and dirty method (copied, that's why I left the source's name in there!)
"Tools needed
A flat surface
Masking tape
4 feet of string
Chalk (for marking)
Hydraulic jack with stands (if needed)
Simple five steps
Park your rig on a flat surface.
Tape one end of the string to the bottom (6 o’clock) of the rear drive shaft. Using a clock method to determine location, bottom would be 6 o’clock, and the top would be 12 o’clock.
Mark the rear tire where it touches the ground.
Now push your rig forward so that the tire make one full rotation
Look at string on the drive shaft.
The string will wrap around the drive shaft and the amount of wrap it has will tell you roughly what gear ratio you got.
Example:
If the string is wrapped around the drive shaft 3 ½ times than you have the 3.50 to 1 gear ratio, which came stock behind a 302 V8.
If you got the string wrapped around 4 ¼ times than it will most likely be 4.11 to 1 gear ratio.
If it is wrapped 4 ½ times than it will be 4.56 to 1.
If it is wrapped 4 ¾ times than it will be 4.88 to 1.
If you don’t have room to move the rig, here is another way to do it. Instead of pushing the rig just jack up on rear tire and rotate it one full turn with vehicle in neutral. Count the number of wraps and times it by 2. The total is what you use to figure the gear ratio. Note this procedure will only work with open diffs.
by Honorio Madriaga"
