Torsen LSD Question

Engines, Transmissions & Final Drive questions and answers

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angusis2fast4u
Fast Driver
Posts: 313
Joined: Mon Jul 01, 2013 10:48 pm
Vehicle: NB8B
Location: Western Suburbs, Brisbane

Torsen LSD Question

Postby angusis2fast4u » Wed Mar 19, 2014 5:49 pm

Okay so I had mx5Plus install an NB torsen into my NA6 back 4 months ago. until i believed it was working perfectly fine but never really tested it. recently i have installed coilovers and have noticed something weird. there is this car park which has a driveway with a steep entry which i hit at an angle so that i don't scrape. the first time i went up the driveway i believed the lsd worked because it felt like it started spinning and then the "torsen" kicked in and sent torque to the other wheel and i was able to get up easily. since then i went back today and the diff at 7k rpm in 1st gear did not transfer any noticable torque to the wheel on the ground. and i only got up it by getting a run up.

Is my diff broken or is this normal?
if broken is it fixable?

This thing cost 2k installed so im not too happy about the performance out of it.
~Angus
2001 Silver NB8B
Past: Grey 1990 Eunos Roadster

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plohl
Racing Driver
Posts: 1922
Joined: Wed Oct 14, 2009 12:13 am
Vehicle: NA8
Location: Brisbane

Re: Torsen LSD Question

Postby plohl » Wed Mar 19, 2014 5:53 pm

You had a wheel off the ground - torsens don't like that.

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Cheers,
plohl

noobee
Fast Driver
Posts: 393
Joined: Tue Apr 06, 2010 10:53 pm
Vehicle: NB8A
Location: Newcastle (Woodberry)

Re: Torsen LSD Question

Postby noobee » Wed Mar 19, 2014 6:05 pm

pull your handbrake on a little momentarily,often does the trick.
Mick

deviant
Racing Driver
Posts: 1717
Joined: Thu Apr 15, 2010 7:23 pm
Vehicle: NB8B
Location: Rockingham - Western Australia

Re: Torsen LSD Question

Postby deviant » Wed Mar 19, 2014 6:48 pm

Basically a Torsen only works when both wheels are on the ground. If one wheel is airborne or goes light enough the Torsen will go open.

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angusis2fast4u
Fast Driver
Posts: 313
Joined: Mon Jul 01, 2013 10:48 pm
Vehicle: NB8B
Location: Western Suburbs, Brisbane

Re: Torsen LSD Question

Postby angusis2fast4u » Thu Mar 20, 2014 1:55 am

Thanks guys, i called mxplus and they explained the whole scenario to me, thank god its not broken :)
~Angus
2001 Silver NB8B
Past: Grey 1990 Eunos Roadster


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