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Whine from Differential on RV8

Postby Peter Varley » 03 Aug 2017 07:20

Hello,
My RV8 has done about 65,000 K Ms and there is a 'Whine" coming from the diff. Has anyone else experienced this in a similar number of KMs/Miles ?
Peter Varley
 
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Re: Whine from Differential on RV8

Postby Gavin Brown » 04 Aug 2017 08:36

If I recall correctly, we had a car that we had to change the crown wheel and pinion on after 33,000kms.
Gavin Brown
 
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Re: Whine from Differential on RV8

Postby Philip Irving » 04 Aug 2017 11:39

I have 65k km on mine without an issue,
I did ask Clive Wheatley in the past about expected life of the RV8 back axle with the torque of the v8.
He mentioned that the axle was very long living and shouldn't generate any issues upto about 80k miles.
Philip Irving
 
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Location: Cologne / Bonn, Germany

Re: Whine from Differential on RV8

Postby Richard Wood » 11 Aug 2017 19:54

Hi
I've now done 77,000 miles, shock horror, I do have a "tick" at very slow speeds circa 15 miles an hour or less, apparent coming upto junctions but its been there for the last 8,000 miles without apparent ill effect and isn't changing and may have always been there.
Hope that helps?

Richard
Richard Wood
 
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Location: Rossendale, Lancashire

Re: Whine from Differential on RV8

Postby Nic Houslip » 14 Aug 2017 12:50

Be sure that the whine is coming from the axle? When does it occur, when accelerating or when coasting? In all gears or only in one? My RV8 has a whine in 3rd gear when accelerating, but the LT77 [or R380] box is a bruiser built for Range Rovers etc. and isn't the quietest.
Nic Houslip
 
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Joined: 18 Oct 2013 13:06

Re: Whine from Differential on RV8

Postby Nic Houslip » 14 Aug 2017 12:51

Nic Houslip
 
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Re: Whine from Differential on RV8

Postby Nic Houslip » 14 Aug 2017 12:56

Richard,
The tick might actually be from the speedo cable or even from a front calliper, but could also be a number of other things. I had an annoying muffled "bonk" when accelerating and decelerating that I thought might be the diff, turned out to be the rubber mounted fuel pump moving back and forth in its rubber mount. 2 Tywraps solved it.
Nic Houslip
 
Posts: 48
Joined: 18 Oct 2013 13:06

Re: Whine from Differential on RV8

Postby Peter Varley » 25 Nov 2017 21:38

UPDATE Finally had the diff checked out and according to the diff specialist "the bearings were toast". $2000 AUD later (10 hours and $1200 in labour to remove and reinstall) I am back on the road. I was told that if I did not get it checked out when I did there could have been a huge issue if the bearings had collapsed. Just think what would have been the outcome if the diff locked up at freeway speeds.
Peter Varley
 
Posts: 26
Joined: 19 Dec 2012 06:39

Re: Whine from Differential on RV8

Postby Nic Houslip » 26 Nov 2017 11:24

Peter
Did the diff specialist say which bearings were toast? There are a number of bearings in the axle, on the pinion and one either side of the LSD assembly. If he replaced the pinion bearings (which would normally be the primary culprit) it is worth asking the question, did he renew the collapsible spacer to give the correct pre-load to the pinion bearing? This spacer is crucial in setting the preload and will affect how long the bearings might last.
Nic Houslip
 
Posts: 48
Joined: 18 Oct 2013 13:06

Re: Whine from Differential on RV8

Postby Peter Varley » 27 Nov 2017 05:51

Nic,
Request for more info from diff specialist has been actioned.

Peter V
Peter Varley
 
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