Testarossa gearbox failure again !

Holy **** ... that is bad!

Pete

 

I think Eurospares had a couple of used gear sets for a 512TR which might fit at a reasonable cost.

Never seen that before.

 

I was just reading the thread on the $36k TR. Your pictures answered my question.How many miles did the car have on it at the transmission failures?

 

i build race car gear boxs in my spare time for GT1/TransAm and V8 race cars and i have seen a lot worse just looking at the photos if that is all the damage there is that box is in good condition with no wear on the syncros keys that are on the gears still have there sharp points just that a few teeth have broken off from some shrapnel that has gone through the box looks like you need a lay shaft a couple of gears and some bearings,the box is built by colotti in italy for ferrari and other italian super cars so there is a good chance that the gears are a generic part youll have to count the teeth just to make shore that you have the right gear ratio when asking people for the parts try looking on ebay uk there are some traders that service ferraris or some one might give you a lead to parts and last time i look at testarossa parts there was 2 used engines for sale

 

Can the damaged gear teeth be built up by welding and remachined?......Mark

 

I find that information provided to you Juri, counter intuitive as a proper weld is in actuality stronger than the surrounding metal. That is why in a properly executed weld, the surrounding metal/s will fail prior to the weld. I applaud your resolve in fixing the transmission.....Mark

 

Gears can't be welded and last unless it's some old manure spreader. An automotive gearbox is a different story. If the gears are too hard they fracture, too soft they wear out. If you repair one gear, is it now harder or softer than the gear it mates with? Different hardnesses of mating gears will destroy each other. Just buy gears and move on, theyre out there. I needed 4th and 5th gears for a boxer gearbox I'm building right now. Had to buy both gears for both shafts, that's life. I got them used but they're mint and the price was reasonable.

 

Karting
Silver Subscribed Join Date: Mar 2006
Location: Bellevue, Washington
Full Name: Allen
Posts: 126

Quote:
Originally Posted by Mr. V
Anybody know of any Ferraris being parted out in auto wrecking yards or by private parties in Oregon or Washington?

Don't need anything now, but you never know: a regular source would certainly come in handy.

Ferrari wrecking is a specialty. The best wrecking yard I know is in Phoenix Arizona: GT Car Parts (623)780-2200. Bill is a great source for new and especially classic Italian vehicles!

Hope this helps Juri........Mark

 

I don't know what's left parts-wise but Eurospares is currently parting out 5 TRs, one of which is a 512.

http://www.eurospares.co.uk/breaking.asp
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While the surface wear on the one gear looks like a hardening treatment might have failed (leading to the scenario Newman describes) it certainly looks like debris was travelling around in the gearbox to break the teeth off of the other gear???

Looks like superformance has plenty of them.'

Might check with FerrParts in Cali, I have dealt with them successfully on 308GTB bits...