Driveshafts

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madleemark
Joined: Wed 02 Jul, 2014 22:03
Posts: 23

  Z3 roadster 2.8

Driveshafts

Post by madleemark » Mon 27 Apr, 2015 11:30

hi, the cv joint at the wheel end has started clicking, its not to bad yet, replacement soon, are the driveshafts the same across the range, z3 is a 97 2.8, there are lots of 1.9 shafts on fleabay, hence the question

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BladeRunner919
Joined: Fri 17 Feb, 2012 20:18
Posts: 2220

  Z3 roadster 1.9

Re: Driveshafts

Post by BladeRunner919 » Mon 27 Apr, 2015 12:38

No. 1.9 drivestafts are shorter.

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Southernboy
Joined: Thu 07 Oct, 2010 13:39
Posts: 6312

  Z3 roadster 3.0i
Location: Johannesburg

Re: Driveshafts

Post by Southernboy » Mon 27 Apr, 2015 13:34

I am very surprised to hear that the CV joint has any problem... these are practically indestructible. I have buddies that race e36's, and they have never ever replaced a CV joint at the back end.....If you are 100% sure it's that, then replace it. My bet would be a dry joint. The dry joint is common and all that's required is the rubber boot to be opened at one end and 4 or 5 pushes from a grease gun with axle grease inserted into the boot. A good strong cable tie is sufficient to re-seal the end of the boot again. I had the precise issue on my 2.8 a couple of years back.... Some grease and a bit of a running in sorted the problem.
Also, if one CV joint is dry, best do the inners and outers at the same time.
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madleemark
Joined: Wed 02 Jul, 2014 22:03
Posts: 23

  Z3 roadster 2.8

Re: Driveshafts

Post by madleemark » Mon 27 Apr, 2015 21:03

thank you for replies, that has got to be worth a try, i will be under there tomorrow with the grease, i will let you know
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wifevanda
Joined: Mon 09 Aug, 2010 20:36
Posts: 51

  Z3 roadster 2.0
Location: dagenham

Re: Driveshafts

Post by wifevanda » Mon 27 Apr, 2015 22:21

Hi do we still use graphite grease for driveshafts

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Southernboy
Joined: Thu 07 Oct, 2010 13:39
Posts: 6312

  Z3 roadster 3.0i
Location: Johannesburg

Re: Driveshafts

Post by Southernboy » Tue 28 Apr, 2015 07:36

I can't comment on "graphite grease"... It sounds sensible, but may not be applicable to CV joints. I use the Bentley's lubricant guides which only specify OEM.
The amount of grease for the inner and outer is just 80 grams and 85 grams respectively.
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Mike Fishwick
Joined: Fri 19 Jun, 2009 11:27
Posts: 1991

  Z3 roadster 2.8
Location: Daglan, France

Re: Driveshafts

Post by Mike Fishwick » Wed 29 Apr, 2015 10:34

'Axle' grease is not the correct type of lubricant for CV joints, which require a special molybdenum grease. Typical greases for CV joints are Molykote MRM 2 or FIAT BRM 2 (same stuff in a FIAT package). Similar greases are available for CV joints on Volkswages, usually in measured quantity in a plastic dispenser tube. Talk to your local German & Swedish or FIAT dealers.

Graphite grease has never been an accepted lubricant for CV joints, as it cannot withstand the high pressure loadings between the point contact of the balls and their tracks. Just because it is black/grey does not indicate that it is suitable!

Something which many enthusiasts seem to be unware of is that excessive lowering can change the working angle of the driveshafts, placing a massive load on the CV joints, and also increasing the amount of power lost in articulating them. The old Renault 16 had this problem due to the centres of the inner and outer CV joints not being in line - just as if it were lowered.

The inner boot clips, on my October 1998 car at least, are re-usable by simply bending back the locking tongue to release the metal clip. Cable ties - no thanks!

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madleemark
Joined: Wed 02 Jul, 2014 22:03
Posts: 23

  Z3 roadster 2.8

Re: Driveshafts

Post by madleemark » Thu 04 Jun, 2015 00:04

Well, had a go at greasing my driveshaft joints, found some comma cv lith moly grease at the local motorfactor, worked a treat, thank you for all the comments and advice,made an easy and cheap fix, that i had first thought would be expensive.

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Southernboy
Joined: Thu 07 Oct, 2010 13:39
Posts: 6312

  Z3 roadster 3.0i
Location: Johannesburg

Re: Driveshafts

Post by Southernboy » Thu 04 Jun, 2015 06:31

Good to hear your drive joints are working as they should now. It's a simple task to do, and one which many are unaware of by virtue of being "out of sight". :wink:
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bertiejaffa
Joined: Fri 26 Jul, 2013 10:28
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  M roadster S50
Location: Manchester

Re: Driveshafts

Post by bertiejaffa » Thu 04 Jun, 2015 14:12

Out of interest, how did you know/hear the clicking? Was it at certain times, speeds, with/without stereo etc?
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Southernboy
Joined: Thu 07 Oct, 2010 13:39
Posts: 6312

  Z3 roadster 3.0i
Location: Johannesburg

Re: Driveshafts

Post by Southernboy » Thu 04 Jun, 2015 15:41

Hi Lee
if it's the drive shaft CV's it can be intermittent... When you hear it it almost sounds as if you have a piece of wire wrapped around the shaft which is slapping against a solid something under the car - ie. it's not a sound of something hitting the under body or anything hollow. I replaced my prop shaft thinking it was the prop universal joints, only to discover after that expense, I could have saved huge ammo with just a little grease.. :head:
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madleemark
Joined: Wed 02 Jul, 2014 22:03
Posts: 23

  Z3 roadster 2.8

Re: Driveshafts

Post by madleemark » Thu 04 Jun, 2015 19:21

I first noticed that clicking sound when driving slowly along dry stone walled country lanes, at first i thought something within the handbrake drum, so had both rear drums off for a clean, when putting them back together, and rotating the the hub to set the brake shoes, again heard the nearside clicking, felt the driveshaft and i felt it through the shaft although could not detect any play, i assumed that it needed replacing, hence my original post, good that i asked, the grease within the gaitor was very dry, but a clean and fresh cv grease as advised sorted it, next job i plan to do is gearbox and diff oil change

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