What exactly gets welded when one "welds the diff"? I recently picked up a car that supposedly has or had a welded diff, but it seems totally normal to me. When it is up in the air, if I rotate one tire then the other side rotates the opposite direction. Not welded in my opinion. I intend to remove the cover plate and take a look if a weld broke, but where would it be?
I don't need an explanation of why, or what it does, I get all that.
-Carl
differential
Re: differential
I believe the Miata Open diff has 4 spider gears. Those will be welded together for a "welded diff".
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962porsche
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Re: differential
it's not welded !
you would weld the side gears to the spider gears on the ends of the axels .
because there are different types of lockers or locking diff's not all will use the same type of gears .
the most common diff's will have 4 common gears all of the same size . you will find them right in the center of the diff it's self they are the gears that get welded .
they can be called sun gears or spider gears they are the ones that go to the half shafts or axel shafts .
the planet or side gears interlock with the sun or spider gears tooth to tooth .
where the teeth meet is where you will find the welds for a welded diff .
you will also have the crown gear or ring gear this gear runs with the drive gear or pinion gear coming from the drive shaft out of the trans . these gears are not what gets welded !
if you had a welded differ the car will also not want to turn all that well when just moving the car around .
if the welds did break the chunks of welds would most likely screw up the teeth on other gears in the diff housing .
you most likely would hear a clunking or some other bad noise as the welded part of the gears would be passing over the good not welded part of the gears .
also just because you would have a locking diff it does not mean that just by jacking the wheels off the ground and spinning one wheel that the other wheel will spin in the same direction .
again because of different types of locking diffs they all do not work this way .
a diff like the wedge lock type if you do just spin one wheel the other will spin freely in the other direction . that is until you hold the other wheel too . once you hold the other wheel and try and spin one then both wheels will spin in the same direction . some triple lock diff's work this way also .
you would weld the side gears to the spider gears on the ends of the axels .
because there are different types of lockers or locking diff's not all will use the same type of gears .
the most common diff's will have 4 common gears all of the same size . you will find them right in the center of the diff it's self they are the gears that get welded .
they can be called sun gears or spider gears they are the ones that go to the half shafts or axel shafts .
the planet or side gears interlock with the sun or spider gears tooth to tooth .
where the teeth meet is where you will find the welds for a welded diff .
you will also have the crown gear or ring gear this gear runs with the drive gear or pinion gear coming from the drive shaft out of the trans . these gears are not what gets welded !
if you had a welded differ the car will also not want to turn all that well when just moving the car around .
if the welds did break the chunks of welds would most likely screw up the teeth on other gears in the diff housing .
you most likely would hear a clunking or some other bad noise as the welded part of the gears would be passing over the good not welded part of the gears .
also just because you would have a locking diff it does not mean that just by jacking the wheels off the ground and spinning one wheel that the other wheel will spin in the same direction .
again because of different types of locking diffs they all do not work this way .
a diff like the wedge lock type if you do just spin one wheel the other will spin freely in the other direction . that is until you hold the other wheel too . once you hold the other wheel and try and spin one then both wheels will spin in the same direction . some triple lock diff's work this way also .
Re: differential
Ok, thanks.
A few YouTube videos clearly confirm the descriptions.
A few YouTube videos clearly confirm the descriptions.
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