D&C a 308 tranny?

????

That really doesn't make any sense.........it is either spinning quietly or not......

Maybe PM Dave Helms for an opinion?????

 

If the "needs to be cleaned" means that the unit has been sitting open and dry (no oil) for a while and has begun to develop surface rust / corrosion (most likely what they mean), offer them $500. At a minimum, you will need to replace all the bearings, seals, possibly some synchro rings / cones, and the entire mechanicals will have to removed and scoured clean. To be blunt, if the rust is advanced such that original material needs to removed from the shafts and gear contact surfaces ----- you have nothing more than a paper weight.

But, the salvage value for a good used case should be worth the $500.

 

The engine and transmission come out as a unit- a pretty big job by itself. To disassemble, repair, clean, etc the transmission requires someone who has a ton of experiance or has done it before- not really a sunday afternoon job.

It could get very very expensive in a huge hurry.

What is exactly wrong with the transmission?

 

There was a recent post about someone here who undertook replacing some synchros in a 308 tranny. Conclusion buy a used one. Parts were very $$$
Think it was "daviddriver" on here who posted this??

 

Just to give you an idea of cost, not too long ago, I had my trans rebuilt. I removed the engine, seperated the trans, and gave it to a specialist. The rebuild included all bushings, bearings, syncros, and the 4th gear cluster - I supplied the parts. The cost was $4500 ($2500 labor and $2000 parts).

 

pad,
That tranny rebuild price sounds very good compared to some I've heard of. I'm about to rebuild a 308 tranny for a local guy, Do you recall how many hours were in that $2500?

 

Aw, c'mon guys!

Just yank that puppy outta there, hang it up by it's tendrals on a cherry-picker and hose it down in the driveway with a good powerful water-blaster and call it good.

Sheesh... Why over-complicate matters? This is America man!!!

-Frogman
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But seriously...

Syncrho's are about $350/ea. for 2nd and 3rd. I don't know the cost on the others.

I had to buy another gearbox because my gears were very worn. The cost for the other box was $1500 from GT Car Parts. And since "my" box was already mated to "my" block, the decision was to swap the gears instead of just putting the other gearbox on mine. That way too, the best of whatever part was available went into the final completed gearbox. And I don't have to worry about it fitting properly. I also had the diff seals replaced and the little 2nd gear mod was done as a "gimmie".

The total cost was approx. $4,500. And I have a reconditioned gearbox vs. a re-built gearbox. But the real value is the little yellow slip of paper I have that says it was done at a "real" Ferrari shop by a real Ferrari mechanic (ferrarifxr here on F-Chat) and one with a recognizable name. Also one I trust.

Taking it out is not easy for the DIY'er. But it can be done because I did it.

There's a thread titled, How NOT To Pull a GT4 Engine Thread!!!!"

If you've never pulled a Ferrari engine before, read that thread first.

Working on the trans isn't so simple either. There are some subtle tricks. Like putting the gearbox into two gears at once (something you can do once you remove the little balls that lock the shift-shafts in place) so that you can remove the ring-nuts.

My advice is to get some on-site help like Verell, who is helping another F-Chatter with a gearbox rebuild.

Once you start going, there's no turning back. So make sure you're committed to following through on whatever you finally decide to do.

Good Luck...

 

Verell,

An local independent shop with 2 generations worth of Ferrari knowlege did the job at a quoted price, so I do not know how many hours they spent. I gave them the trans in the fall and picked it up in the spring. I do know that Rosario completely assembled the trans 3 times before he got it shimmed the way he wanted it. I suspect he put more hours into this that originally planned. BTW, 7 years ago, while draining the trans on my '77 GT4, broken metal clips came out with the fluid. Rosario rebuilt that trans without removing the engine. He suspended the engine, disconnected the mounts and was able to move things around enough to get all the shafts in and out. He said it was a PITA, but saved the time of pulling the engine.