944 turbo trans-axle noises
Discussion
have done a search but still looking for more info.
944 turbo SE 1992.
It has developed a noise like a diff noise, has developed over the past few months, its louder on left handers (its not the wheel bearing we checked that).
Are there any common components that would have this sort of wear by 120,000 miles?
Is it likely to be crown wheel / pinion?
Bearings?
Anyone had their S2 or Turbo transaxle re-built?? Example costs?
I've had this sort of stuff fixed on r/w/d cars before but not where the gearbox has been an integral part, so have no idea on labour costs.
thanks
944 turbo SE 1992.
It has developed a noise like a diff noise, has developed over the past few months, its louder on left handers (its not the wheel bearing we checked that).
Are there any common components that would have this sort of wear by 120,000 miles?
Is it likely to be crown wheel / pinion?
Bearings?
Anyone had their S2 or Turbo transaxle re-built?? Example costs?
I've had this sort of stuff fixed on r/w/d cars before but not where the gearbox has been an integral part, so have no idea on labour costs.
thanks
Although the diff bearings can be so badly worn that the centipetal force of cornering can move them sideways and create some noise - it is most rare.
However what is not rare is to hear a worn out rear wheel bearing get worse and better when swerving from side to side although it can be almost impossible to "feel" the wear in the wheel bearings afterwards. They are not like the older ball bearing type where you can easily feel the problem. Even if they feel smooth and have no play they can still be worn out.
In fact it is almost impossible to hear which side the wheel bearing has worn out as the sound reverberates around the cabin. So difficult is it that we usually change both sides at the same time (unless more obvious signs are present).
They usually wear at between 80 and 140K. Usually a drumming sound is heard.
You have to remove the gearbox to inspect the diff bearings - but you can feel for wear by lifting the ouput flange - to establish play - but be sure to also be pushing them inwards at the time so you do not missinterpret the normal "in and out" clearance (or play) as bearing wear. Oil leaks around the output shaft seal also indicate worn diff bearings.
Turbo gearboxes that have an lsd in them are always more noisy than std non lsd boxes - so you may be worrying for no reason.
Baz Hartech
However what is not rare is to hear a worn out rear wheel bearing get worse and better when swerving from side to side although it can be almost impossible to "feel" the wear in the wheel bearings afterwards. They are not like the older ball bearing type where you can easily feel the problem. Even if they feel smooth and have no play they can still be worn out.
In fact it is almost impossible to hear which side the wheel bearing has worn out as the sound reverberates around the cabin. So difficult is it that we usually change both sides at the same time (unless more obvious signs are present).
They usually wear at between 80 and 140K. Usually a drumming sound is heard.
You have to remove the gearbox to inspect the diff bearings - but you can feel for wear by lifting the ouput flange - to establish play - but be sure to also be pushing them inwards at the time so you do not missinterpret the normal "in and out" clearance (or play) as bearing wear. Oil leaks around the output shaft seal also indicate worn diff bearings.
Turbo gearboxes that have an lsd in them are always more noisy than std non lsd boxes - so you may be worrying for no reason.
Baz Hartech
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