Discussion
Just noticed on floor of garage a few drops of oil from the rear of the car..... I'assuming this is from the diff....
There has been a knocking from the rear of the car on un smooth gear changes ( my bad driving :boxedin: ) .. I hopping this due to uv joint needing replacing (is there oneon the car near the diff)...
no werring noises....
I reckon some seals need replacing..... and the diff does not refurb/replacemnet.....
opinions .... cheers.
There has been a knocking from the rear of the car on un smooth gear changes ( my bad driving :boxedin: ) .. I hopping this due to uv joint needing replacing (is there oneon the car near the diff)...
no werring noises....
I reckon some seals need replacing..... and the diff does not refurb/replacemnet.....
opinions .... cheers.
I wouldn't worry too much.
Diffs tend to whine (crown wheel and pinion) or rumble/roar (bearings) quite noticeably as the first signs of wear. Plate-type limited slip diffs tend to make a very obvious 'chatter' noise as they wind up on sharp, low speed turns (eg. at a junction) when the oil is hot, if the plates are worn or the oil is well past its best.
Knocks and clonks during drivetrain shunt are more likely to be worn UJ's as you say, or deteriorated mounting bushes.
My diff leaks a few drops of oil, too, but then after a lifetime of old Lotuses, it wouldn't quite feel like a proper sportscar without the odd oil spot in the garage floor!
Just keep an eye on it to make sure it doesn't get too bad, and ensure that the oil level in the diff is kept topped up.
>> Edited by Mutant Rat on Wednesday 6th July 08:31
Diffs tend to whine (crown wheel and pinion) or rumble/roar (bearings) quite noticeably as the first signs of wear. Plate-type limited slip diffs tend to make a very obvious 'chatter' noise as they wind up on sharp, low speed turns (eg. at a junction) when the oil is hot, if the plates are worn or the oil is well past its best.
Knocks and clonks during drivetrain shunt are more likely to be worn UJ's as you say, or deteriorated mounting bushes.
My diff leaks a few drops of oil, too, but then after a lifetime of old Lotuses, it wouldn't quite feel like a proper sportscar without the odd oil spot in the garage floor!
Just keep an eye on it to make sure it doesn't get too bad, and ensure that the oil level in the diff is kept topped up.
>> Edited by Mutant Rat on Wednesday 6th July 08:31
Hoover33 said:
Just noticed on floor of garage a few drops of oil from the rear of the car..... I'assuming this is from the diff....
Mine does this too, I've asked about it and the garage agrees with M-R
Hoover33 said:
There has been a knocking from the rear of the car on un smooth gear changes.. I hoping this due to uv joint needing replacing (is there oneon the car near the diff)...
Keep your ears open for this noise Hoover33.
If you start getting a rattly metallic noise or a lot of drivetrain shunt when you lift your foot off the clutch get it looked at. UJ's generally get very rattly before they let go. You've got 2 - one on each end of the prop shaft from the gearbox to the diff. Generally a cheap job or DIY if you have a big vice and can get under to get it out.
Above all though, Enjoy it
Ian
Wouldn’t agree with this advice at all. Diff was noisy on my 98 Griff when I bought it and the dealer said it was normal. Over a few months it became VERY loud and I had to replace it. My guess is that the previous owner let the diff drip until the oil was low and the bearings were trashed and the dealer simply topped it up. If you have a leak you should at least check the oil level very regularly (not a easy job) Getting the correct oil can be almost as big a challenge as fitting a replacement diff.
Hoover33 said:
There has been a knocking from the rear of the car on un smooth gear changes ( my bad driving) .. I hopping this due to uv joint needing replacing (is there oneon the car near the diff)...
You need to check the mounting bushes for the diff, in particular, the one above and to the rear. They have a reputation for wearing out. Also the mounting plate for this bush where it attaches to the diff. The bolts (socket headed) can work loose.
Paul.
steve-v8s said:
Wouldn’t agree with this advice at all. Diff was noisy on my 98 Griff when I bought it and the dealer said it was normal. Over a few months it became VERY loud and I had to replace it. My guess is that the previous owner let the diff drip until the oil was low and the bearings were trashed and the dealer simply topped it up. If you have a leak you should at least check the oil level very regularly (not a easy job) Getting the correct oil can be almost as big a challenge as fitting a replacement diff.
Common sense applies, obviously...odd spots of oil from a car that does 5,000 miles a year do not justify removing and changing the seals on the diff, IMO.
More substantial leaks on a car which is doing big mileage (therefore out on the road, potentially leaking oil where you aren't aware of it) would be a bit different.
It also depends on whether you intend to do the job DIY. A big part of changing the diff oil seals is actually removing the diff from the car and if I was heading down this route I'd probably look at changing the bearings anyway (and possible a full rebuild for peace of mind), as a matter of routine, whilst I had it out...in which case, common sense says leave it as long as you think you can get away with it, 'cos if the bearings end up shagged, what's the difference?
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