slap_ed Posted June 29, 2015 Share Posted June 29, 2015 I've got a BMW diff and the sales info said it had a LSD. On the diff it says LSD 3.64. So everything suggests I have an LSD.I thought that if you jacked up the rear of the car and spun one wheel, the other would spin in the same direction confirming an LSD. Whilst spinning, the other wheel stays stationary.Can someone confirm that this is what should happen. I know I could see if I leave two black tyre marks down the road but though I'd ask. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted June 29, 2015 Member Share Posted June 29, 2015 That test doesn't work that way for all types of LSD. But I don't know what should happen with the BMW diff.Jonathan Link to comment Share on other sites More sharing options...
SteveA Posted June 29, 2015 Share Posted June 29, 2015 It's a bit of an aggressive test but light the wheels up in a straight line to see if it leaves double lines of rubber (obviously in a safe location). Link to comment Share on other sites More sharing options...
Ian Mackenzie Posted June 29, 2015 Share Posted June 29, 2015 A couple of donoughts, or half shafts out for a look...... Link to comment Share on other sites More sharing options...
Mrp Posted June 29, 2015 Share Posted June 29, 2015 For me it was the Dunsfold Handling day ! instant donuts !!Perhaps a donut attempt on grass would be a good testMrp Link to comment Share on other sites More sharing options...
slap_ed Posted June 29, 2015 Author Share Posted June 29, 2015 Definitely LSD. Tested in the garage with two black lines as a result.Cheers all. Link to comment Share on other sites More sharing options...
SM25T Posted June 29, 2015 Share Posted June 29, 2015 .... and no back wall in the garage any more ? Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted June 29, 2015 Member Share Posted June 29, 2015 The next time you jack it up please could you tell us what happens when you turn each rear wheel, with it in and out of gear?ThanksJonathan Link to comment Share on other sites More sharing options...
slap_ed Posted June 30, 2015 Author Share Posted June 30, 2015 Car jacked up and out of gear. Spin any one wheel causes the other one to remain stationary, it doesn't move. (Brakes not binding)car jacked up and in gear - will check when I can. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted June 30, 2015 Member Share Posted June 30, 2015 Thanks: someone's going to grateful for this one day.Jonathan Link to comment Share on other sites More sharing options...
Ian Mackenzie Posted June 30, 2015 Share Posted June 30, 2015 From a standing start you can still get both wheels spinning with an open diff, you can even manage about half a donought with an open diff Link to comment Share on other sites More sharing options...
Mort Posted July 1, 2015 Share Posted July 1, 2015 Deleted. Link to comment Share on other sites More sharing options...
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