noise from rear on decel...

[White Knight]

Hey guys, been noticing a bit of a whine or similar on deceleration in 3rd gear only when dropping to around 50kmh or less.
No other gear does it, but.... The noise seems to eminate from the rear. I changed diff oil yesterday, no shavings in the old fluid and the noise hasn't changed. What I did notice, and it may have been there prior, is play in the tailshaft. I would probably say 1/8th turn in it.
Is this normal or could there be a seperate cause for the noise?
Cheers.

 

[croket]

im getting the same from my vr4 , it has a ton of backlash in the diff. Have you checked how much backlash youve got ?

 

[Benzo4gT]

Oh no, the extra power claims it's first victim!

Never fear mate, I have a spare in the Shed of the Damned.

 

[White Knight]

I actually haven't checked for backlash, pretty sure I would have noticed tho.

 

[White Knight]

Cheers benny, wiiling victim perhaps lol. Have closer inspection Saturday I reckon. Just want to work out what it is...
Bennys parts, port and polishing.

 

[4piknup]

Sooo, benny is going to port your rear end and then check for backlash??? Ew.

 

[CLuTZ]

What clutches are you guys running?

 

[White Knight]

Oh jack...... I didnt pick that as I was typing. damn it!!!!
Clutz, oem clutch for me. I had thought of the possibility of frequencies coming down the drivetrain. But doubtful. Good call though.

 

[croket]

Im running xtreme 8 puck clutch with some customised pressure plate for higher clamping force.

Jack the ass end up and grab tailshaft and twist it if its moving alot before the wheels do , it might pay to get the pinion gear shimmed

 

[White Knight]

Yeah true crocket, I dare say that would be it mate. Given I work late, I'll have to wait til weekend to have a proper check tho.
Has your noise been there since the clutch was replaced or just "happened"?

 

[Benzo4gT]

Pretty sure the LSD in mine is in need of some help, not sure about the open diff though I'll have to check it too before I lock it.

Sooo, benny is going to port your rear end and then check for backlash??? Ew.

LOL, classic!