rear end clunk

[NilsP]

here again for some help guys.
I noticed a rear end clunk the last few times I drove the Cerb.
It only happens when i lift off the throttle after a decent acceleration.
It's not a 'clunk sound' but a 'clunk feeling'. Am I making any sense?
And it feels like it's coming from somewhere around the diff or around that area.
The car doesn't feel 'floaty' so I don't think its the diff bushes.
Could this be the ARB bushes?
Am I on the right track here?

[aide]

Could be the diff mounting bracket.
The original one is a weak point.
Mine broke and I replaced it with an uprated thicker one.

[NilsP]

aide said:

Could be the diff mounting bracket.
The original one is a weak point.
Mine broke and I replaced it with an uprated thicker one.

Ah hadn't considered that. it would make a lot of sense, as it happened suddenly.
instead of progressively like worn bushes would.
might as well fit some polybushes while i'm in there
Thanks for the shout aide!

[aide]

May as well go for F1 grade drive shafts from Dave Mac in Coventry and a quaife lsd

[NilsP]

aide said:

May as well go for F1 grade drive shafts from Dave Mac in Coventry and a quaife lsd

let's keep that sort of fun for when my garage is finished and i have my lift!

[Brummmie]

Also the bolts that hold the diff nose brackets can come loose.
I put longer bolts in, and put nuts on the back to double lock it, aswell as lots of threadlock as its a pig to get to.
These coming loose give a lighter clunk than a rear diff bracket failure, which is a much heavier thump.
I made my own rear bracket out of 5mm steel, as the standard one has the thickness of a Twiglet tin!

[NilsP]

Brummmie said:

Also the bolts that hold the diff nose brackets can come loose.
I put longer bolts in, and put nuts on the back to double lock it, aswell as lots of threadlock as its a pig to get to.
These coming loose give a lighter clunk than a rear diff bracket failure, which is a much heavier thump.
I made my own rear bracket out of 5mm steel, as the standard one has the thickness of a Twiglet tin!

Thanks for the tip :thumb up:
Yes i was planning on making one myself as well, as the original one did seem kind of flimsy.

[An Marcach]

You'll be able to check the rear diff mount by getting under the car and seeing if you can move the rear of the diff a bit with a pry bar

Checking it is the easy bit, getting at the mount is an absolute prick of a job

The diff virtually has to be removed to get at the mount, loosened everywhere and moved as far forward as possible

Great fun ...... not

[NilsP]

An Marcach said:

You'll be able to check the rear diff mount by getting under the car and seeing if you can move the rear of the diff a bit with a pry bar

Checking it is the easy bit, getting at the mount is an absolute prick of a job

The diff virtually has to be removed to get at the mount, loosened everywhere and moved as far forward as possible

Great fun ...... not

If it's a weak point, I'm doing it anyway.
And polybush the whole thing while I'm in there.

I've got 2 real PITA jobs coming up

[ukkid35]

Most hated job, ever

[aide]

Two things spring to mind.

Drill out the old bush with a carbide bit.

To save you making a new uprated mount it might be worth contacting ridds, I got mine from him.

Hth
Aide
Dave Mac prop shafts secured with new bolts and nord lock washers are a good idea too.

[NilsP]

Wow that really does look like a PITA!!

Thanks for the tip aide, i'll contact ridds for a bracket and look into some drive shafts.

Damn it Aide, i'm becoming like you! I was just going to change a bush!