Technical Driveshafted

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Technical Driveshafted

No amount of greese imbalance in volume/weight is going to throw a drive shaft out of balance. The mass of the drive shaft to just too high compared to the greese and diameter/radius and thus centrufugal forces are just too low.

However greese in the joint will have a dampenning effect as well as a lubrication effect.

What puzzles me about the tulip / spider joints is why are they being used? For many years the existing Fiat inner CV joints used on all previous large engine Fiats have proved to be utterly reliable. They are made with large ball bearings etc. and have an almost zero failure history.

I tend to get the impression that the GM gearbox and suspension system is just too week and floppy and lateral drive shaft movement so high during cornering etc. that having 3+ inch long tulip tunnels in which the spider can travel up and down was the only way they could get the system to hang together !
Totally agree about the engineering and the comment on GM suspension. With the roads round here its heart in the mouth time for the nearside front spring as i have already had the OS one broken @ 28000:(
 
I'm just awaiting parts - I've got the Tutela MRM Zero grease sitting here. I'm going to ask the garage to check both sides for play and, if they're OK, clean out both and put in the measured quantity of what Fiat say it should have.

This will be tackled at the same time as the sticking brakes (discussed on another thread). I'm currently awaiting the brake pad fitting kits - I have the pads themselves.

So it will probably be next week before I can report anything. I'll update both threads as I know more.
 
Doofer .... we must me sometime to compare Cromas.

You show me yours and I'll show you mine .... :)

Nick (just down the road from you ... Hedge End)
Did I see you once on the M27 a year or two ago somewhere around Hedge End - did we have a bit of an overtaking each other thing?! I tried to wave, but I was trying not to die too - I know from experience that if I turn left I steer left!
 
Most probably was me.....long time ago and my memory fades fast these days....its an age related thing.
OHHH YESSS- i`m age hath no fury like having to have a shopping list for bread &milk:confused:.
Just waiting till I type wibble instead of wobble:p
















There you go you see a prophecy fulfilled already!! Now wheres the nurse gone with mi buppy:D
 
I'm very surprised that old codgers are driving Cromas - don't you feel out of place in something so stylish and sporty?

As for me - I'm young, handsome and cool. I drive a Croma as it has the good looks I need to complement mine.

Nothing at all to do with the fact that I can get loads of stuff in the back and don't have to bend my aching back to get in it.
 
I'm very surprised that old codgers are driving Cromas - don't you feel out of place in something so stylish and sporty?

As for me - I'm young, handsome and cool. I drive a Croma as it has the good looks I need to complement mine.

Nothing at all to do with the fact that I can get loads of stuff in the back and don't have to bend my aching back to get in it.

When you get to my age comfort before style every time:).
I take comfort in knowing that the hidden ability to be smartly away at the lights has stood me in good stead with the boomboxeratti who rock up in dropped Corsas!!

I like to take the "piscatorials " as often as possible and prove over and over again how much tackle I can pile into the Croma and still find room for the dog:D
 
Ok...... This is all a bit complex for me all I know is, it's more vibrating/ shaking I'm getting and it's on when accelerating from 30-50 no wobbling and no pull on the steering. I even took it out of gear and coasted down a hill at 60 so decently not the tracking
 
The basic rules of the "40 wobble "-
1)- Only occurs on acceleration- will disappear if you take your foot off.
2)- Check for grease piled on the inside of the engine undershield (like mine was).
3)- Get the inner gaiter on the driver side shaft checked for loosened clip = grease loss
4)- Beware of Greeks baring gifts- if you have to replace the shaft- and a very cheap one is offered beware, but dont be fooled into having to have a Fiat replacement like I did thats forcourt robbery:mad:
 
If you have found grease/ loose gaiter -- have it filled to the correct amount with CV grease before resorting to the new shaft route, could save you ££££ for a bit of grease and fiddling about(y)
 
Hey been under the car this morning and took a pick of it. The drivers side drive shaft gaiter thing bob. It's got grease on but I'm not sure weather it's from the shaft of just general grease ImageUploadedByFIAT Forum1376391547.618187.jpg
 
Ok just been looking again and figured out that the pic I posted is of the track rod I think lol. Found the drive shaft further back ill post a pic can't see any grease on it and its not loose as far as I can tell
 
Blonde moment over! First pis is of the passenger side looking down and 2nd and 3rd is drivers side
 
From the pic on the right it looks like there c ould be some grease on the bracket with the bolt/captive nut sticking out. it also looks like you have no engine undershield, unless you have taken it off!!!
The gaiter is shaped on the inside to fit the shape of the "tulip" (Fiats name not mine) and the large clip is designed to be a one trip pony. If you have to take it off get a suitable size jubilee clip to replace it with before you start .
Have a look further back in the thread , I have posted the amount of grease that should be in this end of the shaft and also some photos/ exploded diagrams from my Fiat manual which will explain the construction better.
 
Ah yeah I noticed that grease underneath it.. The shield is there I went through the wheel arch to get the pic. Don't think ill be able to do it though but I'm going to put a dab of paint on it and take it to a garage and get someone to look at it. Thanks again lol
 
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