Testarossa Differential

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Ferrari testarossa / 512tr, Onderdelen, Blankenberge | Kapaza.be
Came across this one in Belgium

 

You do not want to put a differential in there that has not had the welded carrier replaced with an update. Search the TR forum for more information.

 

+1. Not a "shot in the dark"...failures are well documented and have been reported for 15+ years. There are modifications that can be done to (hopefully) prevent a future occurrence.
Definitely do your due diligence for your friend before spending money.

 

Do yourself a favor and search for Newman on F-Chat.

 

I came across this older post, can you please elaborate what kind of modifications can be done to prevent a differential failure besides replacing the original differential with a sturdier one??

 

I am unfamiliar with the specifics. I had a friend with a 512TR that did the logical upgrade when his transaxle failed, he purchased a brand new 512M transaxle from Ferrari. When this failed a few years later, he chose to have it sent (I believe) to Norwood Auto Italia for their upgrade/modification. Further searching on this forum may find threads related to Norwood and their expertise in this area. I recall a lot of discussion on the old FerrariList back in the early 2000s about these failures. The infamous cLyDe was threatening to start a class action against Ferrari over it...don't think he ever did.

 

Nothing to be done but install one of the replacement differentials. Modena Engineering also sells a propeller shaft that is designed to absorb shock loads and cushion all the fragile transaxle parts. I represent them in the USA and as good an idea as I think that propeller shaft is I do not consider it a replacement for a better differential.

FWIW I know some very high mile Testarossas with early differentials.One had over 250,000 miles.I have one and I am not laying awake at night worrying about mine.

 

I am not worry about mine either, I believe the original differentials can last a lifetime if the car is not abused, I never drop the clutch or do burnouts, also I wait until the clutch is fully engaged before accelerating in order to preserve the shaft, a mechanic told me that shifting on the higher gears (i.e 4th to 5th) is when the shaft is more prone to break due to the biggest advantage of the engine over the shaft.


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The advantage I have is we got the car with 1000 miles and I know who put on every one of them. Few can say that about their Testarossa. History is very important. It is not something that breaks all at once.

 

Do you think a car that was abused in the past can break all of a sudden by a gentle driver?


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Not a doubt in my mind. Has happened to me in several cars.

 

Some people own Ferraris and some people drive Ferraris.

Not acknowledging the fact that Ferrari put a less than quality diff in Boxers and TRs is a bit comical. I always say it's personal choice when it comes to service and mait., but Ferraris are not the cars to make the cheap repair.

As you asked, I have an original diff carrier I took out of my 84 Boxer it's in perfect condition. It's without the innards, which can be switched from your friends, if they were not destroyed.