So... I bought an M5

pi328

///Member
Car is back, at last. Rims are now straight, I believe, and refurbished. :) However, the vibration is still there. :bawling: I can feel a little vibration at about 40 and again at 75 upwards, and it gets quite bad. Vibration during braking as well, but that's probably related to discs and pads. Any chance my vibration problem is related to bad vibration at 75-90km ? Maybe the suspension check missed a problem? Any suggestions on where to look next? Thanks.
 

pi328

///Member
zaleonardz@DentDoctor said:
But glad you found the problem, and that it is not prop.

Spoke to someone knowledgeable about this and it sounds as if it might indeed be the prop shaft, or something in the general vicinity of the prop shaft. Will get that checked out when I get a moment.
 

zaleonardz

Well-known member
Gearbox mounts were perfect when we did the clutch, so was the center bearing, werries checked it with me.

What concerns me is, have you heard the squeek yet on the rear under heavy load, i still say its a bush,

Did they put the car on a rattle machine, or did they just check with the old "put a crowbar in and see if it moves" routine...\
 

pi328

///Member
Haven't really heard the squeak yet, since the vibration is drowning out most of the other noises and is also the thing that's annoying me the most. :( This vibration was there right from the start and on your list of things to fix, so I'm trying to locate and fix it. :)

The suspension check that was done was more a case of poking around under the car to see if anything is broken or not attached where it's supposed to go. If the prop shaft check is negative, I'll investigate this avenue again.

Located and to be installed:
* air box / pollen filter, both to be cleaned first - any suggestions on what to use and what not?
* correct wheel bolts;
* window washer bottle cap;
* some items for the tool kit in boot.

Still to find:
* lock nuts;
* washer jet;
* rest of tool kit in boot;
* front & back cup holders;
* driver side weather strip / rubber;
* passenger side sun visor - the one I have is the wrong size/configuration;
* cover for window control panel situated on driver door;
* carpets, maybe from www.lovemycar.co.za
 

pi328

///Member
pi328 said:
zaleonardz@DentDoctor said:
But glad you found the problem, and that it is not prop.

Spoke to someone knowledgeable about this and it sounds as if it might indeed be the prop shaft, or something in the general vicinity of the prop shaft. Will get that checked out when I get a moment.

Took it to someone for a listen/feel and he's 100% certain it's the prop shaft. His guesstimate: R5-10k. Good price, bad price? Any other places I can ask?
 

Nic_s

///Member
pi328 said:
pi328 said:
zaleonardz@DentDoctor said:
But glad you found the problem, and that it is not prop.

Spoke to someone knowledgeable about this and it sounds as if it might indeed be the prop shaft, or something in the general vicinity of the prop shaft. Will get that checked out when I get a moment.

Took it to someone for a listen/feel and he's 100% certain it's the prop shaft. His guesstimate: R5-10k. Good price, bad price? Any other places I can ask?

What are they going to do exactly? Fit a new prop?
 

pi328

///Member
Nic_s said:
pi328 said:
pi328 said:
zaleonardz@DentDoctor said:
But glad you found the problem, and that it is not prop.

Spoke to someone knowledgeable about this and it sounds as if it might indeed be the prop shaft, or something in the general vicinity of the prop shaft. Will get that checked out when I get a moment.

Took it to someone for a listen/feel and he's 100% certain it's the prop shaft. His guesstimate: R5-10k. Good price, bad price? Any other places I can ask?

What are they going to do exactly? Fit a new prop?

They have to first take it apart to be able to quote properly, but by sounds of things, the lower value is to fix/balance the existing one, and the upper value includes a new shaft.
 

pi328

///Member
Just phoned Ferobrake / Tri-Torq in Epping. They say it might be joints or centre bearing or even the shaft itself that needs balancing. They have to first see the car to give a proper quote, but their thumb suck upper limit of R3k is sounding a lot better to my budget. :)
 

pi328

///Member
Rick: many thanks for the referral to Frank! Frank in turn referred me to Colin at Propshaft Engineering in Elsies River. After they battled to get the exhaust off (bolts were seized) to gain access to the drive shaft, I just received the damage report, along with a comment that MacGyver must have worked on this car at some stage:

  • Universal joint: not a BMW one, but Mercedes Benz -- seems like a continuation of the wheel bolts saga;
  • Bolts & nuts holding the Universal joint: different sizes;
  • Centering sleeve/bush (gearbox): busted;
  • Centre bearing: broken;
  • CV joint (diff): worn, but fixable.
Now we're getting somewhere...
 

pi328

///Member
Bush was busted and replaced. Universal joint (the Merc one) was slightly warped. Non-standard spec bolts thrown away and 14mm bolts used. CV joint dust cover replaced and greased up. Centre bearing replaced. This is what was left of the centre bearing:



Vibration is mostly gone now. Next up: skim discs (if possible), fit OEM pads and put the redstuff pads in the bin.
 

Clownshoe

Active member
Was that you at the platekloof engen today? Driver looked in a hurry. So just managed a quick compliment. I was in the jeep shuttling garden refuse... M5 sounds good....
 

pi328

///Member
Not yet, first need to sort out the brakes. And then find the rest of the squeaks. Was out visiting tonight and on the way back some ricer car tried everything to tempt me for a dice. You know, the type with half a drain pipe at the back. Wonder if they really knew what monster they were poking with a stick? :)
 
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