85 testerossa help !urgent!

How many quarts of fluid does the testerossa hold in the tranny and differential. Are they together or are they seperate.

thank you

 

10 US qts (9.5 liters)

They share a common lubricant reservoir (but a small amount of new fluid should be introduced into the transfer gear case too).

You can get a copy of the OM here: www.owners.ferrari.com

 

What about the differential on the rear of the clutch assembly? Does it share common luid with the transmission, if so we have 16 quarts in it and it is still not full.

 

The gears at the back of the clutch are the transfer gears. It is the same reservoir, but it's in a "small pool above a waterfall" arrangement.

Please describe more clearly what you have done --

1. Where have you put the 16 quarts?

2. By "not full" do you mean the level is not yet up to the gearbox fill plug? (the gearbox fill plug is not the transfer case fill plug -- do you have the gearbox fill plug removed?)

 

We put 10 quarts yesterday into the fill plug in the back of the transmission which appeared to be perfectly full at the time. We then put the tranny fil plug back in.

This morning we put 6 quarts into the fill plug on the transfer gear case (at the top of the clutch assembly) and it appears to be "waterfalling" back into the transmission where we already have 10 quarts.

The fluid level is not up the the transfer case fill plug.

 

Your procedure is wrong (and you are now grossly over-filled). Reopen the main gearbox fill plug and let out the extra 6 quarts that you added (When the level returns to the bottom edge of the main gearbox fill hole you're good to go.)

The proper procedure is (with the gearbox fill plug removed):

1. add ~0.2 pints minimum into the transfer gear case fill hole,

2. then add the remaining 9.9 quarts in either the transfer gear case fill hole (which will "waterfall" into the main reservoir) or directly into the main gearbox fill hole until the oil level is up to the bottom edge of the main gearbox fill hole.

3. Then reinstall the main gearbox fill plug.

This is the situation you want when you're done (i.e., you don't fill-up the transfer gear case completely):

 

Truly appreciate your help. We are going to drain the gearbox fill hole (~6 quarts) and put about .25 of a quart back into the transfer case. And close everything off. Thank you for the quick responses and the needed advise.

If you need any measly bmw help fire away.

 

We will keep you posted. Just got the picture.

Thanks.

 

No need to add anything more to the transfer gear case. You've already flooded and over-flowed the small pool at the bottom of the transfer gear case above the main reservoir -- just let out all of the excess thru the main gearbox fill hole then reinstall the gearbox fill plug.

Glad to help out, but wouldn't mind knowing a little something about you -- kind of a tough first post Are you a BMW shop that usually doesn't do F work?

 

Yes I am sorry that was an incorrect post on my part. We are going to pull the main trans fill plug and let it drain until the correct level is achieved and assume that the diff gear case will then maintain the .2 pint that you suggested.

We are a BMW shop but have expierence with many exotics such as ferraris but this is the first testarossa that we have worked on. We normally deal with 355s.

The testerossa that we are working on now is a TT that had a hole in the tranny and once we drain this extra fluid it will be finished. I can take pictures if you like. It is an incredable machine.

 

Thanks for the background -- completely understandable situation.

Unfortunately, "TT" and "hole in the tranny" sort of go together on a TR What was the fix (find a used replacement or a used 512TR gearbox)? -- the dealer price for a new TR gearbox must be scary.

Would love to see a pic or two of any F project you work on. Come by and participate more often (and fill out your Profile!) -- you might get more clientle (seriously).

 

I dont have my tripod with me now to take pics of the TTTesterossa but we will do a small photoshoot on monday if we get some time and try to put together a tasty video of some cars we have around the shop.

 

Steve:

Why do you have to put a little oil in the transfer gear case? I followed you procedure when changing my gear oil (same instructions as in the manual), but I never knew why I had to had oil to the transfer gear case.

Ken

 

Steve:

Why do you have to put a little oil in the transfer gear case? I followed you procedure when changing my gear oil (same instructions as in the manual), but I never knew why I had to had oil to the transfer gear case.

Ken

 

I think the little bit of oil in the gearbox is to make sure the gears aren't dry on startup.

As for the hole in the tranny case, I once used some plumbers epoxy to patch a hole in a KTM dirtbike case. Planned to get a new case once it started leaking. Years later, it was still holding tough. Its a $5 fix.

 

Ken -- The two reservoir areas are connected in the sense that when the lube is fully-warmed (i.e., thin like water) and things are spraying and sloshing vigorously then there is some "cloud" lubricant migration in each direction (so the "pool" is constantly slowly refreshed), but there's no super-positive pumping mechanism that I've ever seen described in the documentation for pumping from the main reservoir to the transfer gear reservoir (so you need to fill both areas independently). My guess is that they would've been happy to eliminate the transfer gear fill plug if they could've without concern, but obviously they didn't.

I would add that the "0.17 (UK) pints" is an awkward translation (that's right -- "UK pints" not "US pints") -- it conveys way too much precision and is in such a non-everyday unit (except in the UK, and maybe the Commonwealth of course). I'm sure the engineer said "about 100 cc is fine", and it's a shame that that didn't get translated into "about 1/2 cup is fine" .

Here are the cross-sections from the TR WSM to give you an idea about the relative reservoir positions on a TR (just put the bottom jpeg to the right of the upper jpeg and connect the shafts):