Diff noise's

[soulink]

Hey guys,

Went and seen the diff guy again today, i told him about the noise when mostly turning left and sometimes straight. Its like a mmmmm, mmmmm, mmmm (every half rotation) He said its mostly likely to be the LSD Slip Gripping or something like that and he stated sometimes it takes a little longer for the LSD to wear in so he said go do some figure 8's in a big car park and see how i go?

Sound like that's right or lot of ****?

Also i think when they put it all back together (just got diff replaced for those who don't know) there is quiet a loud metal on metal tap sound when going over bumps in the rear, Could something have not been tightened properly after re-assembly? and if so ill try tighten it but need some ideas

Anyway Thanks Guys

[Stattic]

Ahhh yeah when you get a fresh LSD you have to let the oil seep in to every crack, mine was the same, figure 8s will do the trick, go easy on your driving for a while too. Did you end up changing the gears?

[soulink]

nah kept same gears, i do alot of highway driving so keeping the same ratio has worked out allright, but i have noticed my speedo is out by about 8-9 k's over, so im doing 100 on my speedo im realy doing 108-109 dident think it would change my speedo but anyway haha

[Stattic]

What? That means you have a longer ratio. Did you go from 3.45 to 3.08 or something?

[frd906]

Maybe try and find the right speedo sender for the ratio, If its 345lsd try and find the a 345 speedo sender

[Stattic]

If he went to a shorter ratio eg 3.08 to 3.45 his speedo will read higher at a lower speed which is the opposite of what's happened here

[frd906]

What size rims are you running then

[POELWYK]

ok with my mont i have LSD 3.9's when the speedo says 80 im realy goof 70 and so on and so forth but when im at 115 on the speedo ill be doing 100


soulinks Diff is a 308:1 so i donnow whats up with that it souldent have canged

and his running 16's if my memory is right 245/35R16's

[Stattic]

But he's using the same wheels. Soullink did you just get a 3.45 LSD or did you get your old gears put in it?

[soulink]

i dont kno XD, i said to him to just fit the LSD but i think he put in second hand gears, and im pretty sure i had 3.08 ratio (i think, isnt that standard for series 2 S pack?) but yer very weird

[Stattic]

Well they wouldn't have swapped the gears over, you'd just hve the factory 3.45 out of the LSD. I'm surprised you haven't felt a difference yet if only slight

[soulink]

you mean the take off difference, becuase i have noticed a slight pickup from takeoff if thats what you mean so maybe they where changed is there anyway to tell without asking the mechanic?

[Stattic]

I'm fairly sure the speedo difference will tell you although you could just call and ask if he used the gears already in the LSD. They're not going to open up and ace dip 2 centres for nothing. You won't even notice the fuel Econ difference you're on gas anyway Lol. 3.45 will just rev a bit faster so you'll get a bit more acceleration out of it. The LSD was recoed yes?

[soulink]

yer it was recoed.

Any other suggestions guys on the the loose metal noise could be? its only when going over small bumps you can hear it??

[mik]

if it was me i would actually do the figure eights .......then see how it goes, some work shop manuals also mention this practise, it may fix the problem, if it does`nt then do look for other alternatives.

[soulink]

ok ill give it a try after work (stupid 6pm finishes :()

[Stattic]

Trust me do the figure 8s I don't see how you're still asking if you haven't done any

[soulink]

hmmmm, did the figure 8's no good :( anyway ill just give it to 3000k like the guy said and take it back then he will open it and see what it is...

ANOYING!!! haha

[soulink]

HEy all,

UPDATE!! car is at mechanics, found out that they used my old cramble and pinion, old reconditioned LSD with second hand same ratio gears, aswell as the re-race and the labour costed me $1250 total.

The diff now has a whine at 80 to 100kmph and they said that its because its second hand and not to worry about it (WTF!) and the back of the car feels as if its going to fall of the car...

Have i been totally ripped here? or what?

and then he also added that they can change the gears to 3.9's for an extra $1250...

:( anyone else been through the same thing and should i be worried about the back of the car? (diff and surroundings)

Thanks

[SLO AU XR8]

Did they use your crown wheel and pinion, or the crownwheel from another diff with your pinion?

[DW260]

Originally Posted by soulink

HEy all,

UPDATE!! car is at mechanics, found out that they used my old cramble and pinion, old reconditioned LSD with second hand same ratio gears, aswell as the re-race and the labour costed me $1250 total.

The diff now has a whine at 80 to 100kmph and they said that its because its second hand and not to worry about it (WTF!) and the back of the car feels as if its going to fall of the car...

Have i been totally ripped here? or what?

and then he also added that they can change the gears to 3.9's for an extra $1250...

:( anyone else been through the same thing and should i be worried about the back of the car? (diff and surroundings)

Thanks

It cost me $1460 to go from 3:45 to 3:9's with brand new parts... I'd be as cranky as hell...

[soulink]

they used the crownwheele and pinion out of the other diff cause mine was shiny or something but i think they have given me a dud and they just dont want to admit it!

[Stattic]

Sounds like your been ripped mate I'm surprised they even told you all that

[soulink]

well out of all this you cant ask for money back can you? i mean i thought they where good seeing as they are a VACC Member..

What would you do ask for money back and go somewhere else or what?

[DW260]

Establish what your rights are with the Dept of Fair Trading, and go from there.

[Jimmyd]

OK, so the way I read this is;
you took your car and a second hand LSD diff to them,
they rebuilt the second hand LSD,
they then removed your non-LSD diff centre, crownwheel & pinion, and
fitted the reco LSD diff centre crownwheel & pinion into your diff housing.

Correct?

If so, as you have supplied the second hand parts you have very little recourse unless you can prove negligence on their part when reconditioning and/or fitting.

[Jimmyd]

Speedo variance where speedo is now reading lower than actual speed - sounds like you have gone from a 3.23/3.27 to 3.08 taller diff -
Std fit transducer gear for 3.08 was 20 tooth brown,
3.23/3.27 was 21 tooth light green,and
3.45 with 15" 22 tooth grey, with 16" or 17" 23 tooth black.
Depending on what tranducer gear you have fitted as to what gear you would need to correct the speedo - but keep in mind if auto it will shift your change points lower in the rev range as the AUs shift strategy is based on speed not revs..........

Cheers

James

[soulink]

Originally Posted by Jimmyd

and a second hand LSD diff to them

They supplied the second hand diff i just took the car there. so yer was driving around about 10 mins ago, seems since they touched the car yesterday there is now a constant squeak while turning right and a squeak every half rotation of the wheel (note: i have heard this on other au's to).

So im still thinking do i drop the whole situation or try and do something about it?

[Stattic]

Oh that the handbrake that needs adjusting lol
they supplied the diff, If they have knowingly used damaged parts they should be liable

[POELWYK]

hmm not good mate not good at all

ill show u how to adjust the hand brake tomorrow so that sound stops and we will go from there