512tr broken diff !

No No this is your imagination. It rarely happen. LOL!!

Newman, Philwozza, are you around ??? He need your help.

 

welcome to the club of the broken diffs TR owners

you are lucky because of no more damage parts

get in contact with MODENA in australia. I have now 3 diffs from them, two installed and no problems.

if you need more info just send me a pm

 

I'm right in the middle of changing a diff right now if anyone wants to see the before and after details as well as the internal parts of the gearbox and transmission.

Phil

 

I hope you are right !!!

Here is my story ....

Get help from Philwozza at: [email protected] !

He may be able to help you !

 

Out of 7,200 Testarossa's and another 2,200 512 trs how many diff breakage do we have here???? 5, 8 , 12 ?? Lets double it to unknown 24 ?

What is that as a percentage out of 9,500 cars ?

Seems rare to me still.

 

Well big red,
I know I have sold many to the unfortunate that have ALREADY had the problem. I have replaced mine after hearing two close friends having the problem.

Percentages, a guess.......... I would say 10 to 15%. If it happens it is VERY expensive due to the "collateral" damage to parts that are either impossible or super expensive to replace.


IMO

P

 

I agree BigRed the % is low. But if you want to gamble with yours it's your right. I personally prefer to spend $2000 on a diff case than a destroyed transmission at $$$$$. I can afford a new case but not sure about a new trans.

When I read something like what the OP said. With no noise or any signs and see how it is this is just a bomb ready to explode. This is like the timing belts, but I know what is your point of view on them too.

 

I know of approx 300 broken diffs already in NL and GE alone ... and only 1500 were sold here Big Red .... ... so how about 20% ?

 

Ive sold over 70 now and the batch that will be finished next week is sold out already. Half are for failures at least.

Its not rare if you keep hearing about it and they keep selling.

 

Thats not an accurate way to determine a cracked carrier because the support bearings are keeping the carrier under pressure which is why it didnt fly apart. If you could feel movement by applying 1 LB/FT of torque with your hands then 350LB/FT with 4000lbs of car would cause major damage and your ring gear would be destroyed.

 

Is it only with TR's this issue, or other Boxers as well?

 

Boxers, TR's, 512TR's. They will all do it. And the scary part is..you may not even know your diff is toast, unless you know what to listen and feel for.

 

I just looked at a boxer one today, not broken but one of mine is replacing it so it'll never break. The worst part is if it breaks on a spirited drive the damage will extend to the crown and pinion which really kills the smile on your face. Ive seen cracked carriers in boxers but more common on the Testarossas.

 

So taking 9,500 Testarossa's , and another 2,500 bbs we have 12,000 cars ...and you mean to tell me that 20-30% of these cars have pooched diffs ?

Therefore we have anywhere from 2000 to 3000 cars that had failure ... I think a white unicorn is more possible.

There is noway close to 3000 cars would have had failure and not ONE car hit fleabay for sale...I find it hard to believe that all these owners with this high failure rate dropped the big bucks to fix them.

Sorry guys, I'm not convinced of the numbers here.

 

It only matters to you if yours fails, I hope for your sake it doesn't.

 

+1
It has all to do with the owner itself. If you feel good driving your car with no fear of the diff breaking there is no need to replace it. If it ever happen you'll get it fixed then.

For MY peace of mind I'll do it. But that is only me!

 

i would be more interested in how many boxers/TR/512 are on this forum and how many have had diff failure. it might give us a better idea, although diff failure might attract people to this forum for tech advice and influence the numbers... very hard to come up with credible numbers to prove or disprove the diff problems.

But the problem exists, we can't deny that, regardless how common it is. Unless you have serious money in your wallet, it can mean losing your car for most of us if the gearbox goes with it. I just turned 33k miles and i do think about it when i go for a drive, but then forget once i go past 4000 rpm

At this point I'm leaning towards changing the diff on my next belt job, two years from now.

 

Out if about 15 boxers and Trs I am familiar with there have been 2 catastrophic failures.

 

So in your case you've seen 13.3% of the cars you know with catastrophic damages. This is much better chance than to win the lottery!

 

I agree

I agree, I think the numbers are off...the Testarossa especially has been affordable for many years now, I find it highly unlikely that with a high failure rate that is being claimed on here that not one of these would have been eBay by now for sale and disclosed with a broken diff, there would have been many 25k Testarossa's by now.

The fact that so many owners look for an angle to save a few bucks, a broken diff is anything but cheap, it represents almost 30% of the value of a Testarossa now a days , that's why I call BS on these numbers of actual blown diffs....cannot be 2-3,000 cars.

 

They end up mysteriously vandalized or stolen

On a separate note Ferrparts just bought a good running 88 (or so) testarossa and drove it 4 hrs back to the shop only to cut it up for parts. How many of these cars are actually left for you to draw your conclusions by?

 

I can only hope this myth is reality and 3,000 - 5,000 Testarossa's have met the parts grave

Don't get me wrong, I am fully aware this is out there, I just question the magnitude of it.

 

I am surprised that a more common off the shelf diff cant be adapted to fit...

If someone created an adapter kit, it would be more palatable to do as a preventative measure...