diff knock and whine

[P500KO]

Gradually getting thro all my "RAF" fund so could do with a bit of help in keeping some of it in it!!
Having gradually taken my griff further on, ie rebuilt engine new clutch etc"i am now at the diff...it has a really annoying whine and a clunk if you dont get the gear change perfect! ok ok i must do better ...do i go down the Quaife route or just try and get it rebuilt? I dont at this time think I will track it as I am not a good enough driver but it needs sorting...also just got the four poster lift from Fred so no excuse for getting it out, 7 days delivered and the best value i could find IMHO...

[P500KO]

Thanks for the info people, will check it out before I spend.
I have ordered Steve Heaths new edition book,on back order though do you know if its covered in there?

[P500KO]

Bodmin said:

sjwb said:

Point of order:
It is the pinion not input shaft, but other wise well spotted.
However do NOT just tighten the nut, if that is the issue.
Renew the nut and accurately tighten to the recommended torque and or angular displacement.

Bad news; it could of course be a sign of a pinion bearing collapsing. Hope not.

The wine and slight clunk have not got any worse in 2.5k miles, would you summise that if a bearing was collapsing that it would have got worse in that time?
Will still check the nut anyway...thanks

[P500KO]

Quinny said:

Ignore the tape.... I was taking a measurement for someone doing a bit of a project

great pic
Will deffo be checking this out before spending....if it is loose will need to find out if there is ant torque settings or if to just change and retighten...real useful information guys....

[P500KO]

tbdgriff500 said:

hi Bodders long time no see, hope you are well!
i have a diff from a 30,000 mile crashed griff if anyone is interested,
gathering dust at the moment! small donation to my racing fund will secure.
pm me if interested or i will stick it in the classifieds if i ever get round to it.
regards
tim.

Tim,
Sent pm, did you get it?

Clive

[P500KO]

haircutmike said:

Clive.

If you have any play at all in the diff mount you will have an almighty clonking.

This mount has to be torqued to about 56 ft lbs, I took drastic action and all clonking solved!

As to the whine, mine has a minor whine that hasn't changed for 3 years, maybe tadts!

Picked up a used diff today, thanks Tim hope you had a good day at the races..
Intend to get it checked out and then just bolt in, I will then take a look at the old one.
I think I may have mislead you about the "clunk" its not a heavy one by any means and it isnt any worse or better no matter how much grunt you give it, if you time the gear change well then you cant hear anything. The whine is not bad but it is there. Maybe I am being a little fussy. Being in engineering can sometimes be a burden!
Thanks for all the input guys, loads of very helpful replies.....ta Clive.

[P500KO]

MATT427 said:

P500KO said:

Gradually getting thro all my "RAF" fund so could do with a bit of help in keeping some of it in it!!
Having gradually taken my griff further on, ie rebuilt engine new clutch etc"i am now at the diff...it has a really annoying whine and a clunk if you dont get the gear change perfect! ok ok i must do better ...do i go down the Quaife route or just try and get it rebuilt? I dont at this time think I will track it as I am not a good enough driver but it needs sorting...also just got the four poster lift from Fred so no excuse for getting it out, 7 days delivered and the best value i could find IMHO...

sorry clive, but couldn't put it better myself

Err now let me see,,,,,,can you actually drive on the road yet dude??
Maybe we need a trip to Buckmore? handicapped of course
C U at the valley 2moz dude...ps ta for posting up the pics....
PPS u wont need a tray tomoz cos the food is usually cold!!