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Gary Rollason
TryHard
Qld
TT 5 speed

Posts: 180
Reg: 05-2007

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Thursday, December 03, 2009 - 08:55 am, by:  Gary Rollason (Garyr) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Driving home earlier this week, going round a right hand corner I gave it a little stick (not enough to loose traction). Heard a clunk from the rear, I thought it was something rolling around in the boot.

Next day driving to work I’m getting a strange surge when I turn a corner, worse for right handers than left but still there. Kind of feels like something loose in the rear, but hard to describe. It feels a little like a spark plug misfire, but only happens on corners / curves. When I roll around a corner with the clutch in it doesn’t do it. Acceleration in a straight line is normal.

Jacked up the car and checked over everything I could see, and can’t find anything obvious. No broken bits or nuts/bolts missing. Doesn’t seem to be a problem with the suspension as it feels OK going over speed bumps and such.

I’m thinking it may be the diff, mainly from lack of evidence to the contrary.
When I rotate one wheel the other turns, no crunchy grindy noise. I have an open diff. I haven’t had a chance to drop the diff oil yet. I’ll try to do it this arv.

Anyone had any similar experience?
Suggestions as to what else it may be?

(Yes, I've searched )
Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31

Posts: 11137
Reg: 11-2004

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Thursday, December 03, 2009 - 09:24 am, by:  Peter Nitschke (Pen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Sounds like chunky diff to me.
Gary Rollason
TryHard
Qld
TT 5 speed

Posts: 181
Reg: 05-2007

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Thursday, December 03, 2009 - 10:43 am, by:  Gary Rollason (Garyr) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Thanks Pen.

What's the best way to see, other than opening it up.
I will drop the oil this arv if I get time.

Trying to line up a replacement too.
Roughly how long does it take to swap out? I'll be doing it myself on stands.

Oh, and how risky is it driving it like that?
Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31

Posts: 11139
Reg: 11-2004

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Thursday, December 03, 2009 - 11:05 am, by:  Peter Nitschke (Pen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Loosen the filler plug before removing the drain plug. There will probably be metal chunks sticking to the magnetic drain plug.

I can't answer the rest apart from driving it risks total diff failure which could mean you are stranded.
Narvey Vilaythong
Tinkerer
SA
soarer tt and 3T-GTE corona liftback

Posts: 49
Reg: 09-2009

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Thursday, December 03, 2009 - 11:09 am, by:  Narvey Vilaythong (El_pablo) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

That's exactly what happen to me .I found the problem that was causing that scrapping, whinning sound.It was the sound of a diff which had 250ML's of super old diff oil and metal chunks of what use to be gears. I reckon the old didnt like the car much but i do. The way i found out was when the diff completly locked up when a tooth from the spider gears broke off and jamed itself in the other gears. When i turnd right or full lock up the car was clunking and hopping on every right turn.

Try opening the drain plug and letting out some oil to see if there are metal pieces on the slump plug.
when i took the diff out it took me 3 hours with a couple of tools that got bent because i never changed a diff on a soarer before. Reinstalling it took my just under 2 hours(this was with the car on jack stands)i timed my self lol. its pretty simple, just make sure the the CV joint doesn't smash you in the face like it did to me.
Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31

Posts: 11140
Reg: 11-2004

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Thursday, December 03, 2009 - 11:19 am, by:  Peter Nitschke (Pen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Ouch! :-(
Gary Rollason
TryHard
Qld
TT 5 speed

Posts: 182
Reg: 05-2007

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Thursday, December 03, 2009 - 11:29 am, by:  Gary Rollason (Garyr) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Thanks guys.

I'm not driving it at the moment and will not until I've sorted the problem.

Cheers
Daniel Salt
TryHard
NSW
TT 2.5L

Posts: 253
Reg: 07-2006

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Thursday, December 03, 2009 - 11:30 am, by:  Daniel Salt (Saltytt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Thats what mind sounded like when it died (but it was a LSD).I took about the same amount as time as Narvey . Before you start make sure you have a breaker bar and a set of allen keys that goes up to 12mm at least.
Brett Cutts
TryHard
south australia
TT & V8

Posts: 466
Reg: 07-2008

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Thursday, December 03, 2009 - 10:30 pm, by:  Brett Cutts (Boof390) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I am so glad I have a hoist! 20 minutes and 1 beer each way and no headache from low flying cv shafts
Narvey was that diff I sold you ok ????
Brett Cutts
TryHard
south australia
TT & V8

Posts: 467
Reg: 07-2008

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Thursday, December 03, 2009 - 10:32 pm, by:  Brett Cutts (Boof390) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

You might want to check the cv joints dont have any freeplay as well as they can make some pretty interesting diff like noises as they start to fail
Adam Lonergan
Goo Roo
Victoria
UZZ32 #369 (V8)

Posts: 1052
Reg: 08-2005

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Thursday, December 03, 2009 - 10:44 pm, by:  Adam Lonergan (Alchemistal) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Also check the engine mounts.
Narvey Vilaythong
Tinkerer
SA
soarer tt and 3T-GTE corona liftback

Posts: 50
Reg: 09-2009

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Friday, December 04, 2009 - 12:24 am, by:  Narvey Vilaythong (El_pablo) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

yes brett, the diff is great, i flushed it with petrol and let it dried before refilling with new oil, great cond, no noises, thank you so much, btw, can you check the axle code on the plate on the car, i feel the cars has lost abit of acceleration
Gary Rollason
TryHard
Qld
TT 5 speed

Posts: 184
Reg: 05-2007

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Friday, December 04, 2009 - 06:38 am, by:  Gary Rollason (Garyr) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Engine mounts are new, around 18 months old.
How do you check the CV joints?

The diff isn't actually making noises, apart from the clunk when it first went.
Adam Lonergan
Goo Roo
Victoria
UZZ32 #369 (V8)

Posts: 1053
Reg: 08-2005

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Friday, December 04, 2009 - 06:45 am, by:  Adam Lonergan (Alchemistal) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Try jacking the car up one corner at a time. Grab the tyre and try to violently move it up/down and left/right. If the wheel moves you've found the problem. I had a similar noise occasionally when I turned right under acceleration and it was worn rear bushes (32) and a bent rear control arm in the rear right.
Gary Rollason
TryHard
Qld
TT 5 speed

Posts: 185
Reg: 05-2007

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Tuesday, December 08, 2009 - 08:09 am, by:  Gary Rollason (Garyr) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Chunky Diff!!!!

Dropped the oil out and the magnetic plug looked like a Xmas tree with bits of shiny metal sticking out everywhere. And there was only round 1L of oil in it.

Dropped the diff and opened it up. Teeth were almost as jagged as an English barmaids. HaHa! LOTS of metal bits in the bottom of the housing. I'm surprised it got me home.

Picked up a second hand open wheeler on Sunday, fitted yesterday, back rolling.
Yee Haa!!

Thanks for the help guys.

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