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[Albatross]

I just had the LSD fitted to my car (finally) and it works well, you can really feel the difference on roundabouts and pulling out of side streets etc., but I do have a slight niggle:

When traveling at low speeds (5 - 20mph) which is often the case around town when you lift off the gas to coast into a junction/roundabout and then put the foot back on the gas there is a slight "thump" sound and feel. It feels almostas though the LSD "re-engages" after a very slight delay. It isn't a serious "bang" or anything like that and it all works absolutley fine above 20mph, but I wanted to ask about it to see if anyone had any ideas.

[partsman]

Generally caused by oil in the diff with no/knackered friction modifiers.

[Omegatoy]

Generally caused by oil in the diff with no/knackered friction modifiers.

Or wear in the plates, however first port of cal is change the oil and make sure you fill it with LSD specific!! wont feel the difference straight away but after a few hundred the diff will start to work properly again assuming the plates are ok!!!

[Albatross]

Generally caused by oil in the diff with no/knackered friction modifiers.

Or wear in the plates, however first port of cal is change the oil and make sure you fill it with LSD specific!! wont feel the difference straight away but after a few hundred the diff will start to work properly again assuming the plates are ok!!!

I got it from another forum member with the axles removed and the drive shafft ground off leving a stub of 10cm of drive shaft.

That left me reassured that it probably came from a car that was disassembled for reasons othr than a faulty differential.

It sat on its side in a suitcase in my garage for 3 months and a fair amount of oil did drain out.

I've just had it fitted and the oil added is the right oil for LSD. I "hope" that they have added enough oild (1 litre), and not too much.

I'm gathering small hope from the highlighted text above that there is a chance that it settles down over the next few hundred miles or so.

I must admit if you are very delicate with your right foot at low speeds it can be "worked around" i.e. you can avoid the mild thump, but it does thump slightly (and unavoidably) when you 1st engage the car into drive from neutral.

Any comments? Am I on a reasonable tack here with this hope?

[Kevin Wood]

I don't have any experience with these diffs but clunking when engaging drive sounds to me more like backlash in the gears than a problem with the limited slip section.

I would also be inclined to pop my head under it and check that the flange bolts are tight - just in case.

Kevin

[Albatross]

I don't have any experience with these diffs but clunking when engaging drive sounds to me more like backlash in the gears than a problem with the limited slip section.

I would also be inclined to pop my head under it and check that the flange bolts are tight - just in case.

Kevin

If it is the gears then perhaps it is just me being over critical since the diff was fitted becuse the gearbox hasn't been touched. What could I do to find out / or rectify the gearbox if that is the case?

What / where are the "flange bolts"?

[tmx]

how can you identify an LSD if the id plate is missing? just on the off chance you know?

i cant find the ID plate anywhere on my diff its deffinatly not where mr haynes says

[Albatross]

how can you identify an LSD if the id plate is missing? just on the off chance you know?

i cant find the ID plate anywhere on my diff its deffinatly not where mr haynes says

Have a look at this thread; I posted a whole bunch of pictures and information some time back now. Some of it was corrected ny other members' subsequent posts on the thread which I was glad of....

http://www.omegaowners.com/forum/YaBB.pl?num=1223481649/24#24

Another way to check might be to sit on tarmac with the TC off, turn full lock on and boot the accelerator; if you get a lot of wheelspin then yours probably isn't an LSD. (the reason I suggest fulll lock is that the inside rear wheel will get unweighted and start to spin if your harsh enough.)

You could equally try to boot it from stationary in a straight line on a gravel track (again with TC off); if one wheel spins then no LSD, if both do then it probably is.

[tmx]

thanks mate ill have a look inside it then and look out for what you said

never know i mite have one doubt it though

[Albatross]

I don't have any experience with these diffs but clunking when engaging drive sounds to me more like backlash in the gears than a problem with the limited slip section.

I would also be inclined to pop my head under it and check that the flange bolts are tight - just in case.

Kevin

If it is the gears then perhaps it is just me being over critical since the diff was fitted becuse the gearbox hasn't been touched. What could I do to find out / or rectify the gearbox if that is the case?

What / where are the "flange bolts"?

[Kevin Wood]

I don't have any experience with these diffs but clunking when engaging drive sounds to me more like backlash in the gears than a problem with the limited slip section.

I would also be inclined to pop my head under it and check that the flange bolts are tight - just in case.

Kevin

If it is the gears then perhaps it is just me being over critical since the diff was fitted becuse the gearbox hasn't been touched. What could I do to find out / or rectify the gearbox if that is the case?

What / where are the "flange bolts"?

I was talking about backlash in the gears within the diff. Maybe the LSD is set up a bit looser than the previous one? If you park it up in "N" with the handbrake on can you get underneath and turn the propshaft back and forth? It will probably rock back and forth a couple of degrees but if that movement is excessive have a look and see if movement is visible at either of the output shafts of the diff or between the propshaft and the input flange on the diff (indicating that the flange bolts are loose or there's play in the UJ).

Kevin

[Albatross]

If it transpires that there is "play" in the diff. caused by backlash in the gears what are my options?

The diff is working a treat and the grip out of corners is incredible so I don't really want to go back, but at the same time I'd really rather not have the thudding.