gearbox/lsd problems

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Iceman

Member +
ok let me see if i can explain what is happening. Recently i put in a new engine cause the old one got F***up. when the new engine came and installed only to realise that its has a LSD bos which it came with. The problem is that when driving in a straight the car feels normal but once u take a slight corner left or right you get a feeling that the drive is not fit properly into the box (heavy vibration) but its is, the mechanic verify it. Is this how the LSD suppose to feel or have anyone had such an experience before?

Any and all suggestions of most gladly welcomes.

Thanks much.
 
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Levin-AE111

Member +
Hmm is the clutch/flywheel located and mounted properly all bolts fitted correctly..etc? im assuming so if it drivers fine in a straight line...etc. All bearings ok??

Mine vibrates slightly when cornering slowly, havent got around to checking if it has a LSD fitted yet though. Only car ive ever owned that does it.
 
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squeekyduck

squeekyduck

Member +
My car has an LSD and when conering it doesnt make any noise. It shouldnt make any noise either. The differnce the LSD makes is more stable conering and the rear of the car is less twitchy.

It might be your CV's mate.
 
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hardcoreep

Member +
It depends upon the type of LSD inside the gearbox. Since you didn't realise there was one the first then you have no idea how its been set up. There are diffs that lock once you turn under power. The most common sign you have a very tight/race LSD is the constant click once the steering wheel is turned.

What you need to do is take the lsd out and see what type/brand it is and how its set up with the plates of springs.

That sounds to me like you have either a 2way LSD or one with a high locking percentage.
 
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Levin-AE111

Member +
Might be what squeekyduck said, check your CV joints and what not mate. Could be a knackered or damaged one??

hardcoreep even if its a 2way would it still do that mate?
 
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hardcoreep

Member +
Yes. Two way diffs operate under braking and acceleration. This means if you turn in under either condition whatever locking percentage its set at it will become active.
 
azerty

azerty

Supermoderator
when you say LSD boss, you mean the box has an external additional module ?
then you would have a toyota factory LSD. witch is viscous kind. this one is very gentle and shouldn't change your driving much compare to non LSD.
I would check driveshafts and wheel parallele adjustement

now if it is an aftermarket LSD, as Harcoreep said. I would check how it has been setup
 
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Matchew

Member +
I've had a cusco, trd and factory lsd's and they have all clunked sometimes like when you pull away and when you take certain corners i thought it was my cv joints but it didnt do it all the time if it was your cv's it would do it on everytime you turn a corner constant knocking
 
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HITMAN

Member +
azerty said:
when you say LSD boss, you mean the box has an external additional module ?
then you would have a Toyota factory LSD. witch is viscous kind. this one is very gentle and shouldn't change your driving much compare to non LSD.
I would check driveshafts and wheel parallele adjustment

now if it is an aftermarket LSD, as Harcoreep said. I would check how it has been setup
Click to expand...
what i did i open the bonnet and let someone else sit in the driver seat and let them try to move the car with the wheel turn all the way to the left and then i notice that the engine was moving when the wheel started sticking. so thats why i wanted to know if the shaft too long?
 
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Iceman

Member +
Which of the drive shaft that needs to be replaced when a LSD is installed, the drivers or passengers side? Does anyone have a pic or know the measurement of such drive shaft to make sure i get the proper one.
 
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HITMAN

Member +
yesterday we check the drive shaft and the were ok and the lsd is internal cause the box has no bluge.whats the lenght of the drive shaft needed and if it has to come from a next car which car is it?
 
weeJohn

weeJohn

Lifer
If you only changed the engine your driveshafts will not be the problem, if you changed the gearbox with the engine then the driveshafts may be a problem, but I would doubt it.

The factory lsd box has an extra "bearing housing" that protrudes from the gearbox where the driveshaft fits into, on the drivers side. The gearbox housing at this position is a different shape also, so a shorter engine mount is also needed to fit this type of box. You wont ba able to fit the factory lsd box without this mount, believe me I know!!

So if you have not changed the gearbox, its not you problem.

Go back to the start and tell us what you have done again please.
 
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Iceman

Member +
ok guyz let me see if i can shed some light here. I am not the mechanic that actually did the job but i know a few things about starlets.

The original engine that was in the car was a none LSD gearbox engine, the one that was purchased had LSD on it, the gearbox that came with the new LSD engine does not use the LSD that have the bulge cause i compared it with my ep82 which is not LSD equipped. The drives go directly into the gearbox itself. The only thing that was taken of from the old none LSD box was the clutch and pressure plate and that was installed into the LSD gearbox. We jacked up both sides of the car to see if there is anything loose or if the drive was a problem in binding or cause the drive to stick when turning corners and we found ntn wrong. Hope that answer any and all question. Let me know if there is any further info that can help resolve this issue?

Wat is u guyz take n this issue, is there any step by step course of action we can try to find the problem in an elimination step?

Thanks much in advance
 
weeJohn

weeJohn

Lifer
Mate the lsd is part of the gearbox, it is a limited slip differential, thats built into the gearbox. You cant get an lsd engine as an engine does not have a differential in it.

If there is nothing different about the casing of the new gearbox you got with the new engine, your driveshafts and rear engine mount will not need to be changed to fit this.

An lsd should not cause vibration when cornering, I am sorry but cant really help to diagnose the problem you have, but maybe help to ellimate a few things on the way.

Hope you get sorted mate.
 
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HITMAN

Member +
well i just put back a 4sped bpx from a 4efe and works very good so leave me to think that something id wroung with the gear box and i also used the same drive shaft what i was using from th other box. am going to open the box and then i will say whats the problem.
 
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HITMAN

Member +
these are the numbers that are on the differential 8496 MAY BE SOMEONE CAN TELL SOMETHING ABOUT IT SINCE I CANNOT SEE ANYBRAND OR SO.
 
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