Propshaft Overhaul

[flossymeister]

Glad its fixed J, well done mate!

Tim

[Henka]

Did anyone confirm if the CV joints needed indeed were the inner rear joints from a Ford Scorpio? If so - do I use the Ford boots to? I mean, the complete deal, CV and rubber boot?

[Jas11n]

Hmmmmm

Well after a bit of help from Graham in Aus , I think my prop is goosed. Can anyone (Martinjs?) tell me the symtoms of a well gone prop?
Here's the deal with my prob at the minute;
Car was all find on the way home from work the other morning, no untoward noises or vibrations. Pulled into petrol station and once the car was stationary I noticed a bad vibration/noise coming from under the floor. If I blipped the throttle it got worse. At first I immediatly thought it sounded like the exhaust was blowing.
Out on the road its bad at lower revs, but as the revs climb it seems to lessen. Hammer the car in any gear upto high revs then lift off into over-run and the noise and vibration from under the car is awful.
I've had the car up in the air today at a local SS exhaust place and the system is fine with no leaks as far as we can see (stock front and cats, then catback Milltek)
It also gets slightly more noisey as I round corners. Most of the time I don't notice it whilst driving the car easy, it's only when I either gun it or come to a stop.
Gearbox mounts and engine mounts were new last year so should rule them out. No loss of performance at all so I'm pretty sure it's not the EM hanging off, and it all looks ok from what I can see.

Sorry for the long post but I suppose I'm grasping at straws here. Anyone think the diagnosis of a borked propshaft is right? It did take a BIG whack in the crash last year.

Thanks in advance.
Jas

[martinjs]

Jas, the main symptom i had was on over-run like you say, nasty metal on metal noises, under acceleration it wasnt too bad, anyway it was the front cv joint on the prop (bolts to g/box) which had gone dry, and i mean bone dry. So i changed both joints and the centre bearing with the BMW part whilst i was there.
Get under the car and hold the joint still and try to turn the prop, obviously there shouldn't be any play. Check the rear one also.

HTH

[martinjs]

Check the centre bearing, mine had some play in it but this wasn't causing my problem.

[Jas11n]

Check the centre bearing, mine had some play in it but this wasn't causing my problem.

Thanks Martin

After a further in depth look today, I'm ruling the prop out.
This is exhaust related I'm sure of it. Something has moved somewhere as my rear tailpipes and bang up against the rear cut out on one side. Noise is bad going round corners and really bad on over-run. We can hear some strange rattling from the downpipe/manifold area.
Car is going into local specialists next week.

[iain1067]

The rear pipe isn't touching the right hand driveshaft by any chance???


Iain

[Jas11n]

The rear pipe isn't touching the right hand driveshaft by any chance???


Iain

I thought on and checked that Iain. No luck.
It's up front somewhere that the noise and vibration is coming from.

[panzerwagen]

Questions on my driveshaft?????

I had the centerbearing replaced & the u-joint and front back CV's repacked. Now about a couple of days later I get a low pitched whine. I tell the mechanic & he has me give him a drive. Well the whine was hardly noticeable then. WQe couldn't figure out where it was coming from. Came in at 20mph and disappeared at 40mph. He says it wasn't the wheel bearing or anything like the CV's. He was stumped. When the car was warmed up it virtually disappeared.
Now that we have had a spell or cold wet weather it is quite noticeable! Almost like the cold & water magnified it. The sound can be heard over the traffic noise. It feels like it needs a slight adjustment. How much can it be adjusted?

[Chris5044]

how can you tell wether your cv joints on the prop are worn? ..

[panzerwagen]

Chris5044 >" how can you tell wether your cv joints on the prop are worn?"

Just like the axle CV's they will start making odd noises and when in movement it will make a hell of a racket at
low speed.

[GT500]

I don't want to piss anyone off but..... my center bearing was knackered. Took it to my local propshaft place. http://www.propshaft.co.uk

They said if they fit aBMW bearing then the rubber won't be matched to the diff mounts,gear box mounts. Apparently they all have to move together. IE Bm bearing will create different thrust front to rear...
Made me wait 4 weeks untill they'd tracked down the makers for Audi. I think it came from sweden?
They did get the exact part.. Impressed they didn't fob me off with "ye mate a BM one will do"

I know a lot of folks have a BM one fitted, I would be worried for the long term. It might take 20-30 miles before anything starts whining..

Rob

[Jamo]

I don't want to piss anyone off but..... my center bearing was knackered. Took it to my local propshaft place. http://www.propshaft.co.uk

They said if they fit aBMW bearing then the rubber won't be matched to the diff mounts,gear box mounts. Apparently they all have to move together. IE Bm bearing will create different thrust front to rear...
Made me wait 4 weeks untill they'd tracked down the makers for Audi. I think it came from sweden?
They did get the exact part.. Impressed they didn't fob me off with "ye mate a BM one will do"

I know a lot of folks have a BM one fitted, I would be worried for the long term. It might take 20-30 miles before anything starts whining..

Rob

*Cough* hate to rain on your parade but sounds like complete bullsh*t to me.

If that was the case then you could never fit aftermarket bushes such as powerflex for the diff mount, gearbox mount etc etc and you could only ever fit OEM stuff in your car.

Just doesn't sound right to me also why do Audi specialist also use the BMW bearing replacement?

[s2dude]

*Cough* hate to rain on your parade but sounds like complete bullsh*t to me.

If that was the case then you could never fit aftermarket bushes such as powerflex for the diff mount, gearbox mount etc etc and you could only ever fit OEM stuff in your car.

Just doesn't sound right to me also why do Audi specialist also use the BMW bearing replacement?

i Agree totally mate
Sounds like garbage......they obviously didn't want to risk the unknown (being a non oem bearing) or they just talk complete *****

ok. SO there may be slightly different flex qualities in the rubber but jeez.......the rubber will soon be work stressed to the correct level of flex that the drivetrain requires....

it might take 20-30 miles before anything starts whining

Some folk who have done this replacement have done thousands of miles since totally trouble free....There will be no problems from it at all.

If you have seen how knackered some badly worn high miles propshaft bearings are (like the one at the start of this thread)......

ask the blokes at that garage how the torn/misssing rubber and half dead propshaft bearing affects the dynamics of the car in relation to the other new powerflex or OEM bushes that may or may not have been fitted to the front and rear of the car in the previous years before the propshaft bearing was ....eventually....replaced (like 170k miles in some cases!)

Anyway.....Ive got mine to fit this week so I will confirm how well it works when ive done it

[martinjs]

Made me wait 4 weeks untill they'd tracked down the makers for Audi. I think it came from sweden?
They did get the exact part.. Impressed they didn't fob me off with "ye mate a BM one will do"

I know a lot of folks have a BM one fitted, I would be worried for the long term. It might take 20-30 miles before anything starts whining..

Rob

How much did they charge you for it?
I have to agree with the previous posts, i've done over 6k miles with no problems at all. Its a tried and tested replacement.