[Mk2] [NA] LSD? Stuck in snow

[llcoolj]

Hi all,
Fired up the MR2 this morning and tried to drive off, only the right wheel was spinning.
The conditions were not bad at all, just some compacted snow.

I drive a 1998 UK MR2, so it comes equipped with the LSD (supposedly).

Funny thing is that when I was stuck, I was driving back and forth and I noticed only the right wheel was spinning.

I thought maybe a calliper was stuck, so I put the handbrake on about 60% and then drove forward, the car was able to move forward, I could not see if the left wheel was turning as well as the right wheel, but I assume so as it got me out of the snow.

I stopped and put the handbrake down completely and drove forward again, I was stuck again, the right wheel spun only! Weird??

So, again I put the handbrake on about 60% and then drove forward, the car was able to move forward.

As soon as I got on a non icy road I speed up to about 25mph and when I took my foot of the gas and stuck the car in neutral (let it coast), it felt like I had the brakes on, the car gradually slowed down rapidly.

This happened for about 5minutes, then everything returned to normal.

This has happened to me twice and it was on very cold mornings


Any ideas guys?
Anyone faced this issue?

Thanks for listening

[Lewis Jay]

I think your car has a "open" LSD.

I also think your passenger caliper of handbrake is sticking.

Lewis.

[llcoolj]

Thanks Lewis Jay

I think i have to get the caliper looked at

[Rowland]

Not all 1998+ rev5's have an LSD.
Pretty sure it was an optional extra, infact IMO more UK rev5's don't have an LSD than do.

[llcoolj]

Thanks Rowland!
Yeah, i have to check if i have it or not

[Rowland]

Thanks Rowland!
Yeah, i have to check if i have it or not

If I remember correctly it's not as simple as jack the rear end of the car up, spin a wheel and see what the opposing wheel does.
Pretty sure the mk2 has a torsen diff meaning as soon as you get one wheel off the ground the Torsen becomes an open differential, in order for it to work both wheels must have complete contact with the ground.

Method of testing:
Park the near side of the car on a grass verge, whilst the off side is on the road with grip.
Give it some revs and dump the clutch

[RobCrezz]

I think your car has a "open" LSD.

I also think your passenger caliper of handbrake is sticking.

Lewis.

What is a "open" LSD? Surely its either an LSD or just an Open diff?

[llcoolj]

Thanks Rowland!
I think i dont have LSD as the right wheel was just spining in the snow and the left wheel was stationary

[Lewis Jay]

I think your car has a "open" LSD.

I also think your passenger caliper of handbrake is sticking.

Lewis.

What is a "open" LSD? Surely its either an LSD or just an Open diff?

There are a few different types of LSD they are all refered to as LSD`s but then specific characteristics define there name.

i.e standard or "open" LSD, viscous LSD, clutch LSD, geared LSD, electronic LSD etc.

Have a read hear mate very interesting really.

http://en.wikipedia.org/wiki/Limited_slip_differential



IIcool: yours may also be a viscous LSD that allows a "open" differential operation at low torque and a "lock-up" through the fluid/oil as high torque, what Rowland described.



I have been locking into the various LSD`s on MR2`s and form what I can find most are open diffs, the ones you see with a bar through the middle (when looking into the driveshaft holes).

The viscous type diffs seem to be the ones with a hole straight through middle.

All are very difficult to work out from spinning wheels and/or putting one wheel on grass/ice and the other on concrete due to the "open" diff operation at low torque.

The only sure way seems to be to take the driveshafts out and have a look, even then it can be hard if the diff is aftermarket.

Lewis.

[dansREV2turbo]

i get one wheel spinning on the snow and i know 100% it has an lsd, dont know what type tho tbh..but then again, i dont care.

[Steve-O 2007]

get onto some tarmac, do a little burn out and see if you leave 1 line or 2 lines.

[toxo]

Rev5 NAs should have Torsen diffs shouldn't they? I thought it's the turbos that have viscous ones.

[Lewis Jay]

Rev5 NAs should have Torsen diffs shouldn't they? I thought it's the turbos that have viscous ones.

I am not sure Toxo, but if they do then that would explain the one wheel spin and then both wheel movement when the handbarke was applied, as I think they work as a open diff when one wheel is not under resistance and would "lock-up" when the handbrake is applied.

Pretty sure the turbo is a viscous LSD though, yeah.

[llcoolj]

I think so too Lewis Jay, the wheels did lock up when i applied the handbrake and both wheels turned.

[Ren0W]

get onto some tarmac, do a little burn out and see if you leave 1 line or 2 lines.

So 2 lines would mean LSD?


cuz afaik I leave 2 lines... and I should have LSD.

[JohnnyC]

For anyone stuck in the snow...
http://www.dumpert.nl/mediabase/746201/ ... neeuw.html

[Ren0W]

A scooby with a roof rack