| Author | Message | ||
| BretM (Bretm)
|
Nice. Have fun, and in the words of Nick Scianna "drive it like you stole it." I've got high expectations of some high speed - low drag stories from you Jeff. | ||
| J.D. Smythe (Jeff)
|
Final Update; Got the car back today. Air bubble was removed, clutch readjusted, and shift linkage was realigned (it was just one turn out of adjustment). Now everything feels like it should. | ||
| BretM (Bretm)
|
I think that your car will be in good shape now. The linkage is definitely fixed so you will be able to shift. The hydraulics are probably going to be fine too. If anything happens, you just have to give it up again for a little bit which wont be so bad, at least it's all under warranty. Good Luck. | ||
| '75 308 GT4 (Peter)
|
It is possible to have a tiny air bubble in a hydraulic line. In fact, it doesn't have to be air, but could be moisture or some other foreign substance. | ||
| J.D. Smythe (Jeff)
|
UPDATE: According to my dealer, my 360 had two problems. One, linkage was out of adjustment. That's why I was unable to shift from 4th to 5th and from 5th to 6th. Second problem, they found an air bubble in the clutch hydrolics ( I hope I am saying this correctly). That is why I could not shift into any gear. But they don't how the air bubble got into the line. There are no fluid leaks anywhere and the reserve is completely full. They have never seen this problem on a 360 but have seen it on 355's. It's possible that some other seals are defective but they don't want to replace the 6 seals now. They said there is no justification. The dealer wants me to take the car and drive it. If the problem happens again, then they will replace all 6 seals. The mechanic is 99.9%sure the problem is solved but he also said it could happen again. It leaves me a little nervous but I guess I have no choice but to take the car and drive it. | ||
| BretM (Bretm)
|
I'm so glad it's done. It works so sweet now, although it worked really well before so why I really did anything to it, who knows, but it is a little better so I guess it's worth it. | ||
| '75 308 GT4 (Peter)
|
Bret, I hope you remembered to put back the little springs and ball bearings for the ends of the shafts! | ||
| BretM (Bretm)
|
Yeah I'm too damn familiar with that thing. I've never seen mine apart fortunately, but I've seen a couple at the dealer. I actually just finished aligning mine right, it was a pain until I got the hang of it. It sounds linkage based, but it could be clutch I guess. It seems more like the linkage isn't aligned right and is hitting. Nice pics Peter. Good Luck Jeff. | ||
| '75 308 GT4 (Peter)
|
Here's what the inside of my gearbox looks like (Bret is familiar with this sight). I know its a world apart from a 360 gearbox, but just goes to show you what the system generally looks like.   | ||
| '75 308 GT4 (Peter)
|
A seal? No it definitely sounds like a linkage problem. Now that my gearbox is sitting on my workbench, while I've been cleaning it, I study it very carefully. I'm very impressed with the ingenuity behind it, it's very compact and the shifting systems are very simple but effective. I don't know how else I would do it if I were an engineer, these guys did their homework. But I'll also agree with Bret that it does lend itself to self-destruction if one of those bolts should come loose, because all of those fingers that operate the shift forks are just on the shafts. All that holds them down are those bolts...hmmm I think I'll go right now and check to see if they're torqued down... Jeff, keep us posted on your situation. | ||
| J.D. Smythe (Jeff)
|
I appreciate all the input. This is the beauty of this forum. With the engine on, the shifter will only travel side to side in NEUTRAL. The shifter will not move more than 1/2 inch toward any of the gears. With the engine off, I can put the shifter in any of the gears. I did get hold of the dealer on Easter Sunday. They are sending a flat bed to pick up the car on Monday. He was thinking that a seal on the clutch failed. Just a guess. I don't know if that would explain the alignemt problem too. | ||
| BretM (Bretm)
|
Yeah dude that sucks. I guess it's part of the Ferrari addiction. But, this has been talked about in another posting, they really should be better off with things like this. Especially mechanical things where there isn't an excuse for not doing it right. Ferrari uses (or at least always used, I'm not sure about the 360, but I would imagine so) a shifting linkage that is kind of like a simplistic idea that turns out to be more complex than just using a traditional two shaft system that you encounter on American cars. They use one shaft that both moves forward and back, and that it rolls left and right as well. It is a pretty good idea when you think about it, but it winds up being more complex to align and not as good for really high power shifting. It could be the lock nut, with all that vibration it would work itself loose if it wasn't tightened. Usually you would still be able to move the stick around though, you would just encounter problems engaging gears (the slots wouldn't line up with the corresponding levers for the shift forks back in the trans). At least when Ferrari fixes it, under warranty, it should be good for the life of the car. Is the stick free floating (you can put it in all the slots but you can't feel it engage the gears) or is it impossible to put it in the slots? | ||
| Erik Jonsson (Gamester)
|
I'd bet that the nut which holds the shift rod in alignment (Jam Nut) may not have been fully tightened by the factory, as it progressively got worse. Please post the answer as the dealer repairs it. | ||
| J.D. Smythe (Jeff)
|
After the car sat in the garage for about 2 hours, now it won't shift into any gear (with the engine running). So, a brand new car with less than 200 miles goes in for service already. This is very disturbing. I hope it is a minor problem. | ||
| BretM (Bretm)
|
It really shouldn't hang at all, as long as the clutch is depressed you should be able to put it in any gear at any engine speed. The only time you should encounter a problem would be when you go to let the clutch out and the engine either goes to stall or redline. I don't think it would be a clutch problem. You're probably shifting fine too. I guess it could be an alignment problem. Does it shift at all, or is it just a little harder to shift? I have a 308GTSqv, so I'm not the best source of info, but I am good friends with the owner of the Ferrari dealership near me so I know quite a bit. You're car is under warranty still I would imagine, right? You should stop by the dealership and have them check it out. | ||
| J.D. Smythe (Jeff)
|
Bret The car shifts fine at all speeds in the first 4 gears but going from 4th to 5th, or 5th to 6th, or back from 6th to 5th it just hangs and I have to start back at 4th. Could there be an alignment problem? Or clutch out of adjustment? Or I am just not shifting properly? If so, why are the fisrt 4 gears okay. Help | ||
| BretM (Bretm)
|
A manual will shift whenever you want it to, you are the determining factor. You can shift it to blow the engine or make it lug if you so please. The F1 though, like you said will monitor these things and determine if you are allowed to shift. In the manual you are physically moving the shift forks and engaging the gears so there isn't any thing to stop you, with the F1 you are just sending an electronic signal for pumps to engage the clutch and move the shift forks. | ||
| J.D. Smythe (Jeff)
|
I don't know if this question is just for a 360 or any 6 speed Ferrari. When upshifting from 4th-5th or 5th-6th, will the transmission NOT SHFIT to the higher gear if the engine speed (rpm's?)is too low? And what is considered too low? I know that the F1 transmission will NOT allow the upshift. |