Diffs!

[KezR33]

Hey guys,

Recently been doing some reading about diffs and I'm a little confused. Just need you guys to clarify if what I'm saying is right, or correct me if I'm wrong.

1-way diff:

- Safest of all three.

- Standard on most cars.

- One wheel spins only, and the other won't gain any power till the spinning one gains tractions.

2-way diff:

- Same as a welded diff.

- Both wheels spin at the same rate at the same time.

Does this include when cornering? Would this mean there would be excessive tyre wear and noise when daily driven?

- Best for drifting.

- Most dangerous of all three IF you don't know what to expect.

I read something about 2 ways not "letting go" like other LSDs when releasing the throttle. What does this mean? Could you give an example of how my car (1 way diff) would react differently to a 2 way?

1.5-way diff:

- Combination of the two above.

- Acts like a 1 way diff until excessive (or is it full) throttle is felt then acts like a 2-way diff.

- Will "let go" unlike a 2-way diff when the throttle is released.

- Best for circuit work.

Mini-spool:

- Best for drag racing.

- Similar to a 2-way in that both wheels have power at the same time.

Any further clarification on the differences between this and a 2-way?

Also, any advice on how to properly launch a RWD car with a 1-way LSD? This is for DECA and other upcoming track days. Not for traffic light drags

Appreciate any input. Thanks.

[lachlanw]

nah you got it all wrong

1 way only locks under acceleration and completly open under engine braking

1.5 locks under power and has half of the locking force under engine braking

2 way locks fully under power and engine braking

what car do you have and what type of lsd is it . there are many types of factory lsd .

if yours spins one wheel it is an OPEN diff or a worn out or shit type lsd

[lachlanw]

a mini spool is solid drive to both wheels . same as welded . one wheel can not turn faster than the other when turning so you get scrubbing or chirping

2 way unlocks so you can drive round a car park without the inside wheel leavin marks everywhere

[KezR33]

So an open diff means both wheels can turn independently of the other, and closed means they're locked and spin at the same rate?

By engine braking do you mean when the clutch is engaged but you're not giving the car any throttle?

I have a '94 NA Supra SZ. I assumed a 1 way LSD was just an open diff. Basically, if I try to do a burnout I get one wheel spinning.

[lachlanw]

an open diff will transfer all the power to the wheel the least traction

engine braking means when you come into a corner and slap it down a gear and the revs go up but you are off the gas and slowing down

your car might have a torsen lsd . they are a whole other bucket of fish

1 1.5 and 2 way all refer to machanical lsd,s

open lsd is no "way"

clutch type lsd (as per most nissans ) work both ways but dont lock as hard as mechanical

torsen (torque sensing) lsd doesn not have ways either