how to tell if my viscous lsd still works

Engines, Transmissions & Final Drive questions and answers

Moderators: timk, Stu, zombie, Andrew, The American, Lokiel, -alex, miata, StanTheMan, greenMachine, ManiacLachy, Daffy

vrmmmpshhh
Racing Driver
Posts: 533
Joined: Mon May 19, 2003 11:00 am
Vehicle: NA6
Location: Adelaide
Contact:

how to tell if my viscous lsd still works

Postby vrmmmpshhh » Tue Dec 18, 2012 11:50 am

hi guys.. last few days been reading that the jdm NA6 models came from the factory with a viscous lsd, but they tend to die out by 100,000ks turning them into an open unit. is there anyway to determine if mine is indeed a viscous unit and if it still works. practice sessions around a cone leaves the passenger rear tyre in shreds with the driver side normal. is that a sign?

User avatar
NitroDann
Forum sponsor
Posts: 10280
Joined: Thu Nov 05, 2009 12:10 pm
Vehicle: NA6
Location: Newcastle NSW
Contact:

Re: how to tell if my viscous lsd still works

Postby NitroDann » Tue Dec 18, 2012 12:00 pm

Yeah its stuffed.

If you cannot do donuts and control the size of the circle whilst oversteering the whole way its stuffed.


Dann
http://www.NitroDann.com

speed wrote:If I was to do it again, I wouldn't even consider the supercharger.

project.r.racing
Speed Racer
Posts: 3722
Joined: Sun Jan 18, 2009 10:16 pm
Vehicle: Non MX-5
Location: Glasshouse Mountains, QLD

Re: how to tell if my viscous lsd still works

Postby project.r.racing » Tue Dec 18, 2012 3:58 pm

what dann said. time for new kaaz or cusco. :P

koop21
Fast Driver
Posts: 296
Joined: Tue Aug 23, 2011 12:31 am
Vehicle: NA6
Location: Sydney

Re: how to tell if my viscous lsd still works

Postby koop21 » Wed Dec 19, 2012 8:37 pm

Heres the more civilized what to check your vlsd *taken from service manual*

Image

toppertee
Racing Driver
Posts: 699
Joined: Mon Jul 11, 2011 4:16 pm
Vehicle: NA6
Location: Brisbane

Re: how to tell if my viscous lsd still works

Postby toppertee » Wed Dec 19, 2012 9:31 pm

Put one wheel in the grass one on the road, drop the clutch and see if you drive away.
You will know if it's working.

User avatar
NitroDann
Forum sponsor
Posts: 10280
Joined: Thu Nov 05, 2009 12:10 pm
Vehicle: NA6
Location: Newcastle NSW
Contact:

Re: how to tell if my viscous lsd still works

Postby NitroDann » Thu Dec 20, 2012 12:49 am

The drive with one wheel on the tar and one on the grass advice isnt well founded, it sounds right if you know diffs, but back when I didnt know diffs I tried it and had no clue at all.

Dann
http://www.NitroDann.com

speed wrote:If I was to do it again, I wouldn't even consider the supercharger.

User avatar
PhilM
Fast Driver
Posts: 295
Joined: Fri Jul 27, 2007 9:55 pm
Vehicle: NA6
Location: Lake Macquarie

Re: how to tell if my viscous lsd still works

Postby PhilM » Fri Dec 28, 2012 8:02 pm

I have a vlsd and when both back wheels were jacked up turning 1 would turn the other in the same direction. Now when I do it it turns the other wheel in the oposite direction just like an open diff. As well as lots of wheelspin on the track - so it is stuffed!
Rosso Corsa Red NA V Special


Return to “MX5 Engines, Transmission & Final Drive”

Who is online

Users browsing this forum: No registered users and 67 guests