Discussion
I thought I had better update this thread just incase someone comes across it in the future. I did replace my Truetrac for a Wavetrac and I can say it has fixed the dreaded clunk. Even though I have driven less than 100 miles the difference was apparent straight away.
When my Truetrac was removed there were quite a few metal particles in the oil, so I'm not really sure what happened there as the car has an easy life.
I have since checked the stub axles (after the rebuild) for movement and they are nice and tight, there is very little movement in them, however I expect when the diff gets hot even that will disappear.
When I get a chance to use my car I will again update this thread with some additional details should anyone need them.
The diff was rebuilt by AAS in Newcastle, I can't recommend them highly enough.
John
When my Truetrac was removed there were quite a few metal particles in the oil, so I'm not really sure what happened there as the car has an easy life.
I have since checked the stub axles (after the rebuild) for movement and they are nice and tight, there is very little movement in them, however I expect when the diff gets hot even that will disappear.
When I get a chance to use my car I will again update this thread with some additional details should anyone need them.
The diff was rebuilt by AAS in Newcastle, I can't recommend them highly enough.
John
Edited by mfp4073 on Thursday 7th June 09:16
mfp4073 said:
I thought I had better update this thread just incase someone comes across it in the future. I did replace my Truetrac for a Wavetrac and I can say it has fixed the dreaded clunk. Even though I have driven less than 100 miles the difference was apparent straight away.
When my Truetrac was removed there were quite a few metal particles in the oil, so I'm not really sure what happened there as the car has an easy life.
I have since checked the stub axles (after the rebuild) for movement and they are nice and tight, there is very little movement in them, however I expect when the diff gets hot even that will disappear.
When I get a chance to use my car I will again update this thread with some additional details should anyone need them.
The diff was rebuilt by AAS in Newcastle, I can't recommend them highly enough.
John
What oil were you running in the trutrac?When my Truetrac was removed there were quite a few metal particles in the oil, so I'm not really sure what happened there as the car has an easy life.
I have since checked the stub axles (after the rebuild) for movement and they are nice and tight, there is very little movement in them, however I expect when the diff gets hot even that will disappear.
When I get a chance to use my car I will again update this thread with some additional details should anyone need them.
The diff was rebuilt by AAS in Newcastle, I can't recommend them highly enough.
John
Edited by mfp4073 on Thursday 7th June 09:16
lincsls2 said:
Seems that AAS are really competent with these cars. I originally thought they were just an good exhaust specialist...
Good to know
Hello lincsls2, Good to know
AAS usually have alsorts of cars in their workshop, they have worked on some nice muscle cars including my brothers Pontiac Firebird Formula 400. They do specialise in exhausts, but they can rebuild engines, diffs and gearboxes. They are also an agent for Royal Purple products.
John
MyM8V8 said:
I trust that oil does not contain friction modifiers for LSD's?
As far as I am aware the oil does not contain any friction modifier, it is Castrol.SAFXJ 75w140This oil is suitable for most differentials with or without a limited slip diff. Let's hope it works!!!!!
I have only covered a small distance since having the new diff, but my car is so much nicer to drive. Having said that, I'm piss** o** with my Truetrac, I've spent more on diffs than I can believe.....not to mention Mrs mfp4073 is not exactly happy about it either!!!!!!!
Sorry to hear your Truetrak did not perform well. I have an early example in mine. It must have covered 40K at least by now including the forums best 60 feet award from Shakespeare raceway event in 2009 (1.6 seconds) so it has had some abuse over the years no issues whatsoever (that is the kiss of death on it now).
The diff is currently in bits as the pinion bearing had started to whine and I did consider upgrading to a Kaaz or a Wavetrac, however the Truetrac still looks good and has served me well so it’s going back in.
The only real issue I had was removing the seized side carriers which were completely butchered and had to be replaced.
The diff is currently in bits as the pinion bearing had started to whine and I did consider upgrading to a Kaaz or a Wavetrac, however the Truetrac still looks good and has served me well so it’s going back in.
The only real issue I had was removing the seized side carriers which were completely butchered and had to be replaced.
Yes that was a fun 3 hours.
1. Started with a custom made tools designed to fit the carrier and a breaker bar.
2. Changed to custom made tool attached to 6 foot piece of angle iron.
3. Custom ground punch and lump hammer to try and break the seal.
4. Heated the case and repeated step 2 and step 3.
5. The carrier is now showing signs of abuse, so decided to replace them.
6. Bigger hammer and bigger punch.
7. SDS Electric concrete breaker.
8. Chain drilled around the entire carrier.
9. Big hammer and big punch.
10. SDS Electric concrete breaker.
11. Once the seal was broken, it still took some hammering to wind it out.
1. Started with a custom made tools designed to fit the carrier and a breaker bar.
2. Changed to custom made tool attached to 6 foot piece of angle iron.
3. Custom ground punch and lump hammer to try and break the seal.
4. Heated the case and repeated step 2 and step 3.
5. The carrier is now showing signs of abuse, so decided to replace them.
6. Bigger hammer and bigger punch.
7. SDS Electric concrete breaker.
8. Chain drilled around the entire carrier.
9. Big hammer and big punch.
10. SDS Electric concrete breaker.
11. Once the seal was broken, it still took some hammering to wind it out.
mfp4073 said:
If you are happy with your Truetrac, then it makes sense to reuse it. I believe it's just typical I had a duff one. Those new side carriers look really nice, however the butchered one looks scary! What a job that must have been!!!!
I've used Trutracs and haven't had a problem, but the manufacturer is quite specific in his instruction (as is wavetrac) on what oil to use. I stopped using Royal Purple in these diffs a long time ago as I understand the LSD oil contained friction modifier.If you ever used an lsd oil which included friction modifier you may well have damaged the diff.
Having said all that the Wavetrac appears to be better made than the Trutrac. Also to note; the Wavetrac is made in the States and not China as with Trutrac.
MyM8V8 said:
I've used Trutracs and haven't had a problem, but the manufacturer is quite specific in his instruction (as is wavetrac) on what oil to use. I stopped using Royal Purple in these diffs a long time ago as I understand the LSD oil contained friction modifier.
If you ever used an lsd oil which included friction modifier you may well have damaged the diff.
Having said all that the Wavetrac appears to be better made than the Trutrac. Also to note; the Wavetrac is made in the States and not China as with Trutrac.
I think you are right, it may have been a combination of the wrong oil, too much slack in the stub axles, and possibly quality issues in manufacturing. But who really knows, what I can say is it wasn't abuse that's for sure, it had covered 20,000 easy miles, and it was well gone by then.If you ever used an lsd oil which included friction modifier you may well have damaged the diff.
Having said all that the Wavetrac appears to be better made than the Trutrac. Also to note; the Wavetrac is made in the States and not China as with Trutrac.
mfp4073 said:
MyM8V8 said:
I've used Trutracs and haven't had a problem, but the manufacturer is quite specific in his instruction (as is wavetrac) on what oil to use. I stopped using Royal Purple in these diffs a long time ago as I understand the LSD oil contained friction modifier.
If you ever used an lsd oil which included friction modifier you may well have damaged the diff.
Having said all that the Wavetrac appears to be better made than the Trutrac. Also to note; the Wavetrac is made in the States and not China as with Trutrac.
I think you are right, it may have been a combination of the wrong oil, too much slack in the stub axles, and possibly quality issues in manufacturing. But who really knows, what I can say is it wasn't abuse that's for sure, it had covered 20,000 easy miles, and it was well gone by then.If you ever used an lsd oil which included friction modifier you may well have damaged the diff.
Having said all that the Wavetrac appears to be better made than the Trutrac. Also to note; the Wavetrac is made in the States and not China as with Trutrac.
MyM8V8 said:
I've used Trutracs and haven't had a problem, but the manufacturer is quite specific in his instruction (as is wavetrac) on what oil to use. I stopped using Royal Purple in these diffs a long time ago as I understand the LSD oil contained friction modifier.
If you ever used an lsd oil which included friction modifier you may well have damaged the diff.
Having said all that the Wavetrac appears to be better made than the Trutrac. Also to note; the Wavetrac is made in the States and not China as with Trutrac.
There are no parts in any Torsen style diff that could be harmed in any way by LSD suitable oil.If you ever used an lsd oil which included friction modifier you may well have damaged the diff.
Having said all that the Wavetrac appears to be better made than the Trutrac. Also to note; the Wavetrac is made in the States and not China as with Trutrac.
In defence of the TruTrac, I've given mine an absolute hammering and it's never missed a beat.
Admittedly I've only managed a 2.0 60' on street tyres so it's probably never had a huge amount of torque put through it ( wheelspin limiting the forces rather nicely
) but it gets a lot of abuse.
It is a bit clunky, but until it breaks I can't say I'm bothered about it, I'd say it's reassuringly agricultural
If it did break I'd be quite tempted to try a wavetrac to see if it magically fixed all the clunking
Admittedly I've only managed a 2.0 60' on street tyres so it's probably never had a huge amount of torque put through it ( wheelspin limiting the forces rather nicely
) but it gets a lot of abuse.It is a bit clunky, but until it breaks I can't say I'm bothered about it, I'd say it's reassuringly agricultural
If it did break I'd be quite tempted to try a wavetrac to see if it magically fixed all the clunking
stevieturbo said:
MyM8V8 said:
I've used Trutracs and haven't had a problem, but the manufacturer is quite specific in his instruction (as is wavetrac) on what oil to use. I stopped using Royal Purple in these diffs a long time ago as I understand the LSD oil contained friction modifier.
If you ever used an lsd oil which included friction modifier you may well have damaged the diff.
Having said all that the Wavetrac appears to be better made than the Trutrac. Also to note; the Wavetrac is made in the States and not China as with Trutrac.
There are no parts in any Torsen style diff that could be harmed in any way by LSD suitable oil.If you ever used an lsd oil which included friction modifier you may well have damaged the diff.
Having said all that the Wavetrac appears to be better made than the Trutrac. Also to note; the Wavetrac is made in the States and not China as with Trutrac.
MyM8V8 said:
Sorry. I beg to differ. I'd err on the side of what the manufacturer recommends for reliable operation of their product. And their instruction sheet is quite specific on this point.
Yes...and they also listed LSD suitable oils for mine...and I opted for the Motul variant. Pretty much any good gear or EP type oil....will already be LSD suitable, but they dont make a big deal about it anymore because old plated type diffs are just less common now.But a Torsen diff has no parts whatsoever that will care about what oil is used, or additives. And even their carbon friction plates inside the diff ( which invariably do f
k all compared to their claims ) wont mind either.stevieturbo said:
Yes...and they also listed LSD suitable oils for mine...and I opted for the Motul variant. Pretty much any good gear or EP type oil....will already be LSD suitable, but they dont make a big deal about it anymore because old plated type diffs are just less common now.
But a Torsen diff has no parts whatsoever that will care about what oil is used, or additives. And even their carbon friction plates inside the diff ( which invariably do fk all compared to their claims ) wont mind either.
Stevieturbo,But a Torsen diff has no parts whatsoever that will care about what oil is used, or additives. And even their carbon friction plates inside the diff ( which invariably do f
k all compared to their claims ) wont mind either.I have read you comments with interest, but how would I know if you are correct, and I don't mean that with any disrespect.
I have a new Wavetrac in my Monaro with less than 200 miles on it, and already I can't get a straight answer on the correct grade of gear oil to use.
I'm running Castrol synthetic SAF XJ 75w 140 at the moment, but I have now found out this has a friction modifier already added.
Wavetrac state that no friction modifiers are to be used.
However, Wavetrac UK list their recommend Motul gear oil, 75w 140, but it also has friction modifiers added.
The only oil I have found close to being suitable for a Wavetrac is Millers CRX NT 75w 140 synthetic, it appears not to have friction modifiers?
Any additional help would be appreciated.
Regards John
Edited by mfp4073 on Wednesday 20th June 15:54
I used the Motul. And as said, a lot of good quality gear oils will already be LSD suitable...in the respect they have "friction modifiers" expected by a plated type diff whether they specifically state they have or not.
Mine listed a few oil brands etc when I got it, but the Motul sounded the best to me.
but really, it's worrying over nothing IMO.
Mine listed a few oil brands etc when I got it, but the Motul sounded the best to me.
but really, it's worrying over nothing IMO.
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