Wavetrac LSD replacement
Discussion
Cars back on the road now with a bill of £1659.80;
Expensive lesson learnt; If you hear any noises, no matter how faint or if you think it's something else, get it checked out straight away.
- £800 Wavetrac Diff
- £420 Bearings, seals, labour for diff rebuild, labour for fitting
- £372 Spare diff casing incl. crown and pinion wheels
- £68 for oils (two fills, before to keep it running and another after replacement)
Expensive lesson learnt; If you hear any noises, no matter how faint or if you think it's something else, get it checked out straight away.
Edited by FoxdieUK on Monday 28th July 19:28
Posting an update 1000 miles on. No drama whatsoever.
The only thing that's different is a faint whine at 60 MPH* at very light load (ie. flat motorway cruising), uphill and downhill its not there, nor at any other speed. I can live with that
As for how it's doing...
Part 1
Part 2
Now I gotta chase overheating
The only thing that's different is a faint whine at 60 MPH* at very light load (ie. flat motorway cruising), uphill and downhill its not there, nor at any other speed. I can live with that
As for how it's doing...
Part 1
Part 2
Now I gotta chase overheating
* The whine is actually caused by the slightly rounded pinion and crown, not the new Wavetrac part, the whining won't affect operation
Edited by FoxdieUK on Monday 15th September 22:12
Ringram, I see this http://www.ebay.com/itm/Chevrolet-Camaro-SS-3-91-L... Camaro Diff on eBay without a cover, will the Standard Monaro Diff cover fit?. I've seen articles about certain years of Corvette that had a weak diff, are our woes the same?. It would be most useful if a list could be made to show what Diffs are replacements for what model 'Ro, VXR8 etc. I can see why folks can get nervous when they are not cartain about what they are ordering.
Just to chip in with the cheap option, my rear tyres are at the exciting stage again, and despite regular testing I've still not experienced this locking/unlocking from the truetrac people say about.
If it takes a wheel to be in the air for it to become a problem, then I think should that happen, the state of the diff is going to be the least of my concerns...
If it takes a wheel to be in the air for it to become a problem, then I think should that happen, the state of the diff is going to be the least of my concerns...
SturdyHSV said:
Just to chip in with the cheap option, my rear tyres are at the exciting stage again, and despite regular testing I've still not experienced this locking/unlocking from the truetrac people say about.
If it takes a wheel to be in the air for it to become a problem, then I think should that happen, the state of the diff is going to be the least of my concerns...
Don't go messing up your posh seats If it takes a wheel to be in the air for it to become a problem, then I think should that happen, the state of the diff is going to be the least of my concerns...
Hi folks, posting an update here.
So about 3000 miles after getting the diff rebuilt and 1 skid pan day, the car had to go back to the gearbox firm for a rebuild because one of the output shafts (the drivers / off-side) started to develop a lot of play, had split the seal and lost oil.
Post-mortem revealed one of the shims had crushed one of the roller bearing cage, it was protruding out of the cup / outer ring (not sure if this is normal, it was a genuine Timken bearing) and the shim squashed it causing it to deform inside and collapse.
They've solved it by boring out one of the shims to allow the replacement bearings cage to protrude through without it touching anything, with another thinner bore shim on the outside.
All in all there are 5 shims to brace the diff whereas I believe the stock diff may have 4, it appears the Wavetrac LSD center is in the region of about 5-10mm shorter than the stock ZF LSD center and this needs to be compensated for.
The bill for this round was £140, taking the total expenditure to just shy of £1800.
Given how much this has cost me now, I think ringrams suggestion of a Camaro 1LE rear diff would probably have been wiser however I still cannot find what part code for a 3.71 diff.
Ringram, you able to shed some light on exact part numbers for future readers?
So about 3000 miles after getting the diff rebuilt and 1 skid pan day, the car had to go back to the gearbox firm for a rebuild because one of the output shafts (the drivers / off-side) started to develop a lot of play, had split the seal and lost oil.
Post-mortem revealed one of the shims had crushed one of the roller bearing cage, it was protruding out of the cup / outer ring (not sure if this is normal, it was a genuine Timken bearing) and the shim squashed it causing it to deform inside and collapse.
They've solved it by boring out one of the shims to allow the replacement bearings cage to protrude through without it touching anything, with another thinner bore shim on the outside.
All in all there are 5 shims to brace the diff whereas I believe the stock diff may have 4, it appears the Wavetrac LSD center is in the region of about 5-10mm shorter than the stock ZF LSD center and this needs to be compensated for.
The bill for this round was £140, taking the total expenditure to just shy of £1800.
Given how much this has cost me now, I think ringrams suggestion of a Camaro 1LE rear diff would probably have been wiser however I still cannot find what part code for a 3.71 diff.
Ringram, you able to shed some light on exact part numbers for future readers?
FoxdieUK said:
Hi folks, posting an update here.
So about 3000 miles after getting the diff rebuilt and 1 skid pan day, the car had to go back to the gearbox firm for a rebuild because one of the output shafts (the drivers / off-side) started to develop a lot of play, had split the seal and lost oil.
Post-mortem revealed one of the shims had crushed one of the roller bearing cage, it was protruding out of the cup / outer ring (not sure if this is normal, it was a genuine Timken bearing) and the shim squashed it causing it to deform inside and collapse.
They've solved it by boring out one of the shims to allow the replacement bearings cage to protrude through without it touching anything, with another thinner bore shim on the outside.
All in all there are 5 shims to brace the diff whereas I believe the stock diff may have 4, it appears the Wavetrac LSD center is in the region of about 5-10mm shorter than the stock ZF LSD center and this needs to be compensated for.
The bill for this round was £140, taking the total expenditure to just shy of £1800.
Given how much this has cost me now, I think ringrams suggestion of a Camaro 1LE rear diff would probably have been wiser however I still cannot find what part code for a 3.71 diff.
Ringram, you able to shed some light on exact part numbers for future readers?
I doubt he will be back here anytime soon, and who can blame him?So about 3000 miles after getting the diff rebuilt and 1 skid pan day, the car had to go back to the gearbox firm for a rebuild because one of the output shafts (the drivers / off-side) started to develop a lot of play, had split the seal and lost oil.
Post-mortem revealed one of the shims had crushed one of the roller bearing cage, it was protruding out of the cup / outer ring (not sure if this is normal, it was a genuine Timken bearing) and the shim squashed it causing it to deform inside and collapse.
They've solved it by boring out one of the shims to allow the replacement bearings cage to protrude through without it touching anything, with another thinner bore shim on the outside.
All in all there are 5 shims to brace the diff whereas I believe the stock diff may have 4, it appears the Wavetrac LSD center is in the region of about 5-10mm shorter than the stock ZF LSD center and this needs to be compensated for.
The bill for this round was £140, taking the total expenditure to just shy of £1800.
Given how much this has cost me now, I think ringrams suggestion of a Camaro 1LE rear diff would probably have been wiser however I still cannot find what part code for a 3.71 diff.
Ringram, you able to shed some light on exact part numbers for future readers?
He did reply to your query before by suggesting you contact Nook & Tranny in the states for a price and details.
Behold81 said:
True. But how different is it.
I'm assuming sub frame mounts are different. Input shafts and prop are different fittings so all need fabricating??
just curious how much needed fabricating.
I want a predictable drift motion.
Completely different. If you are going to that much work, you might as well just choose a proven tough diff unit of whatever car fits the bill.I'm assuming sub frame mounts are different. Input shafts and prop are different fittings so all need fabricating??
just curious how much needed fabricating.
I want a predictable drift motion.
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