LSD/ Diff question

[fat313]

I have finally got my car few days ago. However, I have one problem… whenever I turn full right or left, there are noises like “pluk, pluk, pluk pluk…..” and the car jerks a little. Anyone knows what might be the cause? I suspect the ex owner lock the diff / LSD… Anyway, is it safe to drive at this setup?

[Boostzor]

Sounds like ure spot on there mate.

It wont be fully locked or ud know about it. EEEE round every corner hehe.

Should be ok to drive but it kills ure tyres reel fast which can be annoying but u have a real drift moblie there now:D

[fat313]

the sound + jerk only appear when i release the cluch + turning... Cannot notice any problem when i hold down my cluch when turning... BTW whats the logic/theory behind it?

Another problem i am facing now is that when i am crusing at low speed, i can hear "gluk.. gluk... gluk..." from rear (sounds like from suspention). What might be the cause?

[meggala]

yeah fat if you want I'll swap you with a perfectly good normal one :-)

Btw the chances are you car has a 2 way diff which is a much tigher locking one. they take some gettign used to and are used on track cars etc they make it eaiser to drift as well.

seriously if you do want to swp I'll swap with you

meggala

[Jay95R33]

Meggala,

Funny you should say that.... I've got a mechanical Cusco??? in mine and I'm thinking about swapping it for a normal one.....But if they are as good as I hear they are I might hang onto it .

It's hard for me to compare the difference betweena normal LSD R33 and a mechanical (performance wise) cause my R33 is the only one I've driven

Are they THAT much better than the stock ones?

Thanks

J

[meggala]

yes because when youtake off hard the stock r33 one goes spinning from left side to right side quite often only spinning one wheel. when you have one like your it lockes and both wheels spin it is much better for traction

meggala

[fat313]

Damn, now i am soo confuse... Tim from RPM told me that my diff is gone (base on the sound/ jerking) and required a replacement ($1600) but i dont think he suspect my diff might be machanical diff (btw he didnt really test my car yet.)... If i dont replace it, my car will brake down soon!! However, when i went to another machanic shop (A1), they suspect my car has diff lock like what you guys suggested, but they need an appointment to really check the car... Blah soo confuse i am.

[meggala]

$1600 is way way to much you can get it rebuilt but USA in sydney for $600 or pick one up from a wrecker for 400-800

meggala

[fat313]

$400!!! damn thats cheap!! (he quote me $1600 include labour) BTW What is the best way for me to test out wheather my diff is still in good condition or not?? many people give different explaination.... confuse i am...

[51jay]

there are places in Adelaide that are very familia with Skylines

take it to one of them!!

[fat313]

Where?? i know RPM is very familiar to skylines (Tim use to own a skyline)... Thats why i am so worry when he says my diff needs replacement..

[Guest scooter484]

Those noises you describe don't sound too good...

My guess is something's broken in there (a bolt or pin maybe).

Take it to a diff/trans specialist & have them road test it & if necessary pull the centre out to take a look.

[REDGTT]

Megs can it be CV joints? Because CV joints click and when severely worn turning on corners you can feel them.

[ix9]

Just drove a car with a VERY tight LSD... not nissan lsd if that's what you mean...

CLICK CLUNCK CLICK/ JERK / and on gravel all you hear is ksschcchhhh...

They grip like shit to a blanket. very nice stuff.

Don't take what I say for gospel, but it sounds like the diff's fine. just locked....

[PLAYAR]

what exactly is a locked diff?

[Boostzor]

When u go round a corner your inside wheel turns slower than the outside.

If your diff was fully locked ure inside wheel would spin every corner cause the diff would be "locked" together so both wheels would be rotating the same speed.

Good for straight lines cause u get 'even' power but not good for corners and control.

Most lsd:limited slip diff cars have a viscous fluid which transferrs power but some of the hardcore fellas have mechanical which i think work something like a clutch so u actually have metal on metal whiuch would exsplain the pluk pluk pluk (the sounbd of the diff moving against itself.

Hey all the actual mechs outthere correct me if im wrong:uh-huh:

[PLAYAR]

thanks for that boostzor, that's exactly what i wanted to know.

what the standard r33 diff's like?

[Boostzor]

Viscous fluid i think

[PLAYAR]

how do you lock up a diff? and then how can it be unlocked

[Boostzor]

Originally posted by Boostzor

Most lsd:limited slip diff cars have a viscous fluid which transferrs power but some of the hardcore fellas have mechanical which i think work something like a clutch so u actually have metal on metal which would explain the pluk pluk pluk (the sound of the diff moving against itself.

Its a mechanical thing a welder can lock a diff just fine:)

Get a ball point pen that "kliks" notice the little piece of plastic that wont move when pushed "twist" lightly but will when u push"twist" hard.I think thats how it works