Limited Slip Diff- Wheel Turning

[StreetDragster]

Hi All,

My 3R has the 6 speed gearbox and i thought it had the limited slip diff, with one wheel on the ground and one in the air i can turn the wheel without any resistance, and i cannot see any red writing on the bellhousing (but it is dirty).

Does this sound like i actually have an open diff fitted? Any other ways to test without removing the gearbox?

Thanks

Matt

[honestbob]

Standard test. Quiet stretch of road,(dry concrete is best) then pull away in first gear in a straight
line with sufficient power to spin the wheels. Did you leave a 1 or 11 as evidence to what you've got?

[anonymous-user]

If it's a quaife or similar torque biasing diff, it needs a degree of cross axle preload (ie torque) to operate. They effectively "spin freely" when both wheels are in the air and not driving.

[StreetDragster]

So the drag strip launch and count the rubber lines the only way to tell accurately? Don't like the sound of that!

[wessexrfc]

StreetDragster said:

Hi All,

My 3R has the 6 speed gearbox and i thought it had the limited slip diff, with one wheel on the ground and one in the air i can turn the wheel without any resistance, and i cannot see any red writing on the bellhousing (but it is dirty).

Does this sound like i actually have an open diff fitted? Any other ways to test without removing the gearbox?

Thanks

Matt

Think you will find you have limited diff, is the car stamped as a 3R??

[StreetDragster]

Yes it is, but i cannot find the red text that is supposed to be on the bellhousing either.

Matt

[951]

StreetDragster said:

So the drag strip launch and count the rubber lines the only way to tell accurately? Don't like the sound of that!

Ironic PH name then......

[StreetDragster]

951 said:

Ironic PH name then......

Indeed

Its left over from my yoof, don't judge me

[Adrian W]

pretty sure that if you jack the car up and spin a wheel, open diff they turn in opposite directions, LSD they turn together.

[StreetDragster]

Thanks, i'll try that.

Matt

[andygtt]

Adrian W said:

pretty sure that if you jack the car up and spin a wheel, open diff they turn in opposite directions, LSD they turn together.

what he said... certainly thats exactly what my 5 speed was like... spun opposite directions when no led was fitted, span together after I had fitted one.

The 6 speeds all had LSD

[StreetDragster]

Reassuring, will check and report back, thanks

Matt

[Scooby P1]

My gearbox seems to have 6spd LSD written on it in chalk.....anyone else?

[StreetDragster]

Hi All,

Despite not markings on my 6 speed gearbox, i can confirm it has a LSD, both wheels turn in the same direction once its in the air.

Phew!

Matt