Discussion
I have noticed a strange bumping sensation when moving slowly forward or backwards in the Griff, also when I went to get shocks fitted at Steves in Hurst he said that there was a problem with the diff.
I now the two are related but is it serious or not?
Some people say that there are Bridgestone SO2's still about, is this true?
I now the two are related but is it serious or not?
Some people say that there are Bridgestone SO2's still about, is this true?
What year is the car? Mine is a 96 500 with the GKN diff and I get a similar noise at very low speed when cold, not a clunk more of a quietish thrump noise. I also get a high speed (80 mph plus) booming but either I've got used to it, I've gone deaf or it isn't as bad as it was 12 months ago.
I've been told different things by different specialists/mechanics such as
1. "it's nothing to worry about, I've heard newer ones that sound worse"
2. "it's the plates (? I think he said) in the diff causing it"
3. "Could be the diff mountings" (checked - it wasn't)
4. "Its caused by reversing too quickly when it's cold"
and the all time classic
5. "it's knackered mate" (4,000 miles and 12 months later its still my favourite)
So I don't know what to believe.
I've been told different things by different specialists/mechanics such as
1. "it's nothing to worry about, I've heard newer ones that sound worse"
2. "it's the plates (? I think he said) in the diff causing it"
3. "Could be the diff mountings" (checked - it wasn't)
4. "Its caused by reversing too quickly when it's cold"
and the all time classic
5. "it's knackered mate" (4,000 miles and 12 months later its still my favourite)
So I don't know what to believe.
)StuieG said:
Mine's a 98 Griff and the noise/bumping isn't a single bump when moving slowly, more of a bump...bump..bump..etc. Also the drive to the road is not consistant ie. it can wander a bit.
Broken CV joint can make a regular knocking noise, normally sensitive to ride height and cornering though. If the diff is making regular knocking/bumping noises at low speed this might be a sign you've got a chipped/broken tooth in there? Rather than just wearing out. The only time I've had a tooth go, the whole thing let go a second or so later.
Hmm, sounds very similar to mine. Very low speed (always when coming to a halt, from about 10 mph to zero) noise, nothing loud just a little unusual. Mine also pulls to the left slightly under acceleration.
I had a TVR dealer look at it and he said he had seen others like it and the diff could go on for ages before anything nasty happened. Another TVR specialist even said that the pulling could be down to the tyres, as they had a Chimp in with the same problem (pulling) and a new set of tyres cured it. They did check the diff mountings and the driveshafts and there was nothing wrong there.
I've had the car for just over 12 months now and done about 5,000 miles, so perhaps it isn't a tooth thats gone. Would love to know what is wrong with it though!
I had a TVR dealer look at it and he said he had seen others like it and the diff could go on for ages before anything nasty happened. Another TVR specialist even said that the pulling could be down to the tyres, as they had a Chimp in with the same problem (pulling) and a new set of tyres cured it. They did check the diff mountings and the driveshafts and there was nothing wrong there.
I've had the car for just over 12 months now and done about 5,000 miles, so perhaps it isn't a tooth thats gone. Would love to know what is wrong with it though!
stuieg said:
Keith, yes it does pull to the left under acceleration
Uh oh, that's never a good sign. Suggest you check all the wheel nuts are done up right, look for major geometry problems, broken spring, damaged suspension, worn bushes, that sort of thing. It should always accelerate and brake in a straight line, anything making it pull sideways is a potentially serious fault.
I had a Griffith this year that we bought that did a `thump' on acceleration behind the drivers side, it was a worn diff bush.
A bit of a pain in the arse job but needs doing as it will get worse.
Diffs that are in the later TVR's are BTR type and usually pretty bullet proof compared to the older type.
A bit of a pain in the arse job but needs doing as it will get worse.
Diffs that are in the later TVR's are BTR type and usually pretty bullet proof compared to the older type.
rick.e said:
Stui - Yes there are S-02s about but Bridgestone are apparently advising against fitting them as they are at least 2 years old. Apparently Tyre rubber ages.
So does that mean that all two year old cars should have their tyres changed immediately? Or how about new cars that have been stored for a year or more? Should they have a warning that half their tyre life has suddenly been used up?
If it was that important, shouldn't there be a use or sell by date otherwise Joe Public wouldn't know that they were buying tyres that needed Zimmer frames?
Doesn't make sense to me.
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