22 replies to this topic

[59 Speed]

Hi all,

I've bought some adjustable lower arms and set up my suspension:
1.3 degree negative camber
3.3 degree castor

Went to take it out for a test drive and when reversing the front was juddering as if a drive shaft wasn't engaged - looking down from the top the drivers side was near fully out.

I jacked it up and and supported the car whilst I lifted the drivers side wheel - you can clearly see the inner drive shaft coming away from the CV joint as you jack up the wheel using the bottom ball joint.

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I know that adding negative camber would bring the wheel and drive shaft away from the I inner CV joint but enough for it to come out?

I'd understand if it was scraping the tarmac but it's not lowered excessively: 275mm to the sill at the rear, 255mm to the sill at the front. The driveshafts are almost horizontal.

Any ideas? Didn't know if I could've forced the driveshaft too far into the outer CV end?

Cheers,
Ian

Edited by Smackfiend, 03 October 2015 - 09:31 PM.

[nicklouse]

I would double check your angles and add some caster and knock the camber back to one degree for now.

And makes sure the pots reconnect fully and correctly.


It is an odd one this. I wonder if the shaft could have been pushed into the outer CV if the pot joints were not seated correctly when the car was lowered at some time.

Might need some investigation,

[sledgehammer]

are both drive shafts / pot joints the same ?

 

if only one side , look at engine position - has an engine mount gone , allowing engine to shift ? , esp in diff area ?

 

a bit of negative camber shouldn't drag the shaft out that far

 

also as you say is the joint too far in ? , the wire clip is only small , & could easily be forced passed the groove ? (but would only be a few mm anyway)

 

could the shaft in the outer be too far in (I'm sure there is a ridge to stop that)

Edited by sledgehammer, 03 October 2015 - 10:52 PM.

[Spider]

The Inboard CVs don't engage by much in the first place, but they usually don't disengage until you get up around 2 - 2.5⁰ Camber and 3 - 4⁰ of Caster.

 

Just going back to the Inboard CVs themselves, they can be assembled two ways and are off-set, I'm just wondering if they have been assembled the wrong way around at some point? Having them the wrong way will make them disengage sooner or put another way, move the balls closer to to outside.

[59 Speed]

Cheers guys,

I'm going to have another look as soon as I can. As Moke Spider says by the looks of the first image it looks like I have assembled it wrong when I compare to what it should look like:

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I'll probably take a bit of negative camber off too.

The car before I put the adjustable bottom arms on was running about 2 degrees positive camber! So this probably stopped the inner joint from disengaging. Didn't know if this positive 2 degrees possibly caused the driveshaft pushing into the outer CV to far.

Ta

[peter-b]

Thats really annoying.....i hate it when you're just leaving home and your balls fall out. damn!

[sledgehammer]

balls dropping at 2 degrees - that will be the cold weather

 

can you flip them the other way as said above ? (the pot joint inner drive shaft cage thingy)

 

you may get away with dropping a swivel joint & pulling out & leave pot in diff (that sounds soooo wrong)

Edited by sledgehammer, 04 October 2015 - 12:48 PM.

[nicklouse]

Cheers guys,
I'm going to have another look as soon as I can. As Moke Spider says by the looks of the first image it looks like I have assembled it wrong when I compare to what it should look like:
image.jpg image.jpg
I'll probably take a bit of negative camber off too.
The car before I put the adjustable bottom arms on was running about 2 degrees positive camber! So this probably stopped the inner joint from disengaging. Didn't know if this positive 2 degrees possibly caused the driveshaft pushing into the outer CV to far.
Ta

The bit arrowed is under the rubber boot and is where the inner tie locates.

[David128]

Also check inner pot joint. I had this once. not a big job

[Spider]

can you flip them the other way as said above ? (the pot joint inner drive shaft cage thingy)

 

you may get away with dropping a swivel joint & pulling out & leave pot in diff (that sounds soooo wrong)

 

That's one way of sorting it, can be done, not a big job, just messy!

[sledgehammer]

leaving the pot in place means no oil leak

 

cv / pot grease is nasty stuff  & gets every where

[59 Speed]

leaving the pot in place means no oil leak
 
cv / pot grease is nasty stuff  & gets every where

Cheers, no worries.

I'll take the top ball joint off and separate the inner cv fully, turn ithe cage around, clean everything up and re-grease. Hopefully it's as simple as that.

It's not the nicest grease to use but I'm used to messy jobs, I'm just glad that it wasn't a diff or gearbox problem (fingers crossed).

I'll take some camber off and possibly adjust my engine steady so my engine is tilted forward a tad.

Ian

[Dusky]

leaving the pot in place means no oil leak
 
cv / pot grease is nasty stuff  & gets every where

especially if you have White weller wheels like me..

[Spider]

It's not the nicest grease

 

 

It's the Devil's Excrement!

[sledgehammer]

 

leaving the pot in place means no oil leak
 
cv / pot grease is nasty stuff  & gets every where

especially if you have White weller wheels like me..

 

yep - makes them go off white / yellow

 

if you think they are going to get grease on , put polish on first - don't buff it off till after working in that area