pmc_3
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| posted on 2/5/15 at 07:30 PM |
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English axle LSD clanging
Hi fellas, after some advice. I bought my kit last year and it hadn't been on the road for over 10 years. Today it passed its MOT and I got the
first chance of a proper drive in it. The car drove well and LSD seemed to work well, however after giving it some beans away from some traffic lights
when I backed off there was some clanging noises, I thought something had broken off at first and was flapping around! after a few yards the noise
stopped, I heard it once more in the trip. When I got to my destination I jacked the car up and checked all the trailing arms, back wheels for play
etc all was fine. I can only think it was the diff, I took it for a short blast this evening over a few miles and heard no noises.
Oil was topped up in the diff this morning when the MOT and oil would have been warm when the noises happened (25 miles covered).
Thanks in advance
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mark chandler
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| posted on 3/5/15 at 05:36 AM |
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Are you using the correct oil with LSD friction modifiers?
From opie oils
Motul 90 PA Lubricant limited slip differential (LSD) Extreme pressure -2 litres
SKU: 00001120
1 £13.32
Very good stuff, it still needs changing when you complete an engine oil change to keep everything tight.
Regards Mark
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pmc_3
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| posted on 3/5/15 at 07:11 AM |
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Thanks! I didn't realise it needed different oil!
When the MOT was done they check the diff oil level and said it was very low so I looked up mk2 escort diff oil and bought some EP80W-90 GL-5 and we
topped it up
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britishtrident
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| posted on 3/5/15 at 07:26 AM |
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Most English lsd are Salsbury plate type but others exist such as ATB and the old Jack Knight pawl type.
For a Salsburybmall top up with normal hypoid oil is OK but if diff needs a large amount get either the right oil or friction modifier additive..
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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Mikef
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| posted on 3/5/15 at 08:06 AM |
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I had a plate type LSD in a Westfield, and it always sounded like a baccy tin full of nuts and bolts, especially when it was used on the road and when
it was not under load. It sounded terrible on overrun. The best oil I found was Castrol B373, which is specifically made for the job. As above the
right oil for the job is important. It had a real canning for 2 seasons and never let me down.
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pmc_3
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| posted on 3/5/15 at 09:34 AM |
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quote:
Originally posted by Mikef
I had a plate type LSD in a Westfield, and it always sounded like a baccy tin full of nuts and bolts, especially when it was used on the road and when
it was not under load. It sounded terrible on overrun. The best oil I found was Castrol B373, which is specifically made for the job. As above the
right oil for the job is important. It had a real canning for 2 seasons and never let me down.
That makes me feel a better, at first I thought I'd broken a trailing arm bracket and it was crashing around. Thanks for the advice guys I will
change the oil to the correct stuff.
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Mikef
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| posted on 3/5/15 at 10:53 AM |
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There are if I remember rightly 4 plates per side, so if the pre load is a bit light they do tend to rattle. If it really is constantly rattling
really badly it could be the top plate that is dished so that it exerts the pre load pressure as you assemble the LSD has broken. Easy fix , but shed
loads of labour getting the diff out and disassembled etc.
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