Hello I have finally some (good) news! I decided to put some Loctite 648 between the pulley and the outer bearing race to be sure. I lost 2 weeks due to a broken pin on the alternator regulator and I then did a full alternator rebuild by the way so I am fine with this now (when I will have time I will do some doc in my Mondial topic)! I put everything back but the air co belt and the result is here: https://youtu.be/DW1gijKDmfM I think it is now running good, I can't really spot any weird noise since it is quiet loud! I will have to put back the air co belt to see if it is the knocking stuff but anyway the engine bottom end is fine and I will be able to run after having solved a few small stuff! Thanks for your contribution and I will come back to you when I will drive it to ask your opinion about the noise of the gearbox...
Hello again Well after fighting with some work on my other italian car I have finally managed to sort the few stuff that were prevented me to do a small test drive on the Mondial. I have however noticed before that a new noise coming from the engine. In fact, I already heard once this noise a few months ago when listening for the rattle. I think it appeared after touching a little bit the alt/power steering belt and I didn't heard it anymore. I thought it was just a dirty belt noise so I forgot it. However, yesterday it did it again for the first time for these few months and again today. I could heard it at the end of my short drive. It is appearing mostly when crossing or staying in the 1500rpm zone, no effect of clutch or gear. The problem is not present always but I will try to see firstly if it is related to the aux gear or something else. It has never been as present as this week end. https://youtu.be/agLVPSjRcdc What is your thought on this? Does it sound like something like a timing belt bearing or fence? Anyway I have not been able to resist driving it and it is really a pleasure to drive! Thanks
I would check the tension on the alternator belt. Make sure that the retaining bolt on the front of the alternator belt tensioner is snug.
That vertically recorded phone video sounds more like a bearing noise (H20, Alt, Tensioner), but I still would confirm my recommendation (from last year above) as well.
Hello. Yes Ernie this was my first idea and I then noticed that I don't have the original tensioner bolt parts but a (too short) stud and two standard washers, hurting the tensioner spacer if too tight. I have bought the original bolts and washers (belleville and the large one).. and the noise is still there. I have removed the alternator belt and the noise is also here.. looks like the end of the luck, does it?
If you have removed the alternator belt, and the belt for the air conditioning compressor, and the noise is still there? Then yes you are out of luck because the only other things it will be are the water pump, the tensioner bearing for the cam belt, or the idler bearing for the cam belt, OR... any combination of all three. To remedy that will require the engine to be removed and a full engine out major service performed. One other possibility is the bearing behind the lower drive pulley shaft for the timing belt, and or the bearing in the timing chain cover, which will also require the engine to be removed.
Yes it is. I will have a look under the timing belt cover to see it if I can see something and also look at other stuff (I heard it for the first time a few times after having opened the cam covers but can't see obvious link) but I am afraid you are right. For the record, I have installed a WR1 starter relay on the car since it was randomly not starting (only a clic from the starter) and lately with the hot weather it was really bad and the problem looks to be solved.. At least I won't have a look at the flywheel.
Hello I have undone the timing belt cover but not able to remove it due to the radiator hoses. Don't want to bother with this and enough to have a first look. Checked the pulley fences look OK. Hard to see the water pump and hard to say if there is play in the pulley or the tensioners. The passenger side tensioner is a Hill but the other one is a standard and in what a health.. (unable to have a better quality) The rubber marks on it make me think it has seen a old belt and the rust tells also.. As I was fearing, the previous mechanic did screwed everything he touched on this car and since he also did the timing belt... However he did steal the previous owner since the tensioners are written on the bill and it looks clear that at least this one hasn't been replaced 4 years/4000km ago... Don't know if it is the one making the noise but he has seen better days..
Base on those pictures, that old idler bearing is finished, especially with the rubber skid marks from the belt on it. Time to drop the engine and do a full major service.
Hello Some update since then. After putting back the belt cover and the aux belt the noise is gone, I have ran it a few times since then and driven it a very little and no noise anymore. I will do a major including changing the intermediate timing gear bearings and the oil pump chain guide in the near future. However, I would like to enjoy driving a little this car before. A part from this, the engine is now fine. I am just back worrying regarding the gearbox. Since checking the car before buying it, I am hearing a small noise coming from the gear stick. It looks to be directly linked to engine speed but I am still not sure it there is a link to the car speed also. Have the feeling it is increasing from 55mph but should check in lower gears. It can be heard in the background in this audio (sorry for the poor quality). http://rupp3r.free.fr/mondial/gearboxnoise.mp3 I am doing some declutch while driving and we can hear the noise coming down (but I still have to tune the engine since it is sometimes keeping some revs at "idle"). I have drained the gearbox and had a look at the inspection panel. There is not a lot of filing on the drain plug but I think it has been changed 4000miles ago. I haven't found any bits of metal anywhere. http://rupp3r.free.fr/mondial/gearboxoilplug.jpg Here is a picture from the inspection panel, I can't see anything strange. http://rupp3r.free.fr/mondial/gearbox_ip1.JPG I am quite psychotic regarding the input shaft bearing/nuts issue on the 3.4 gearbox and I don't know if the noise I am hearing is "normal" or not..? Thanks
Hello I have had a first attempt trying to remove the transmission from the car (everything in situ). I was not able to remove the gearbox enough from the stud since the top of the gearbox is hitting a panel at the front of the trunk. I am missing just a few mms!! Image Unavailable, Please Login I plan trying again since I was maybe lifting the gearbox with my jack and I may also try lifting just a little the front of the engine. I wanted to do as Ernie did on a 348 but I don't know if it can be done on a Mondial T because of the trunk. Could someone please tell me if one can remove the transmission in situ on a Mondial T? Thanks
You have to remove the clutch/flywheel, the pull the propeller shaft out of the back of the crank. After you do that the gearbox can be removed easier.
Hello So yes one can remove the transmission in situ on a Mondial T Image Unavailable, Please Login To do so, I had to let the powertrain go lower after having removing the big gearbox nuts without lifting the gearbox, this allows to find more space in the front of the trunk panel.. The transmission can then be removed without almost lifting the car. Yes Ernie I removed the clutch/flywheel before that I pulled the propeller shaft. I will even confess having had a big fear when the propeller shaft engaged again in the engine when I was playing with the jack and the gearbox when I first tried it. Afterward, I put something to prevent the propeller shaft to engage again by itself.. I hope I haven't done any damage.! I forgot that I opened one thread related to my gearbox stuff.. so I will continue on this other one: https://www.ferrarichat.com/forum/threads/mondial-t-transmission-noise-one-more.562895/
