[s-cars] got a new sound

[Mark Turczyn]

Hi Teddy-

I gave you a write up to replace the CV joint on the front of the 
drives haft where it attaches to the transmission.  I forget which 
911 that part number is for-- but it is the correct number so I am 
not sure I cared enough to remember.



  I found that by the time you have a shutter your front CV is toast 
and you must replace it.     I forgot to tell you about the center 
shield but I think I was able to look down the drive shaft and see if 
it is a torn middle bearing support rubber.  This bearing supports 
the back of the front section of the drive shaft.  The U joint is 
after this bearing.   You cannot check the U joint by looking so you 
would need to do almost the CV job just to check it.

  So you have three possible parts that can fail,  the front CV joint, 
the middle support bearing, or the U joint.

Based upon my experience I would buy the CV joint and replace it 
since I feel if the CV is at all dry you have pretty much wore it out 
if you have been shuttering for over a month.

If your center bearing is toast there was a  write up using a BMW 
center bearing and modifying the attachment bracket.  If it is a dry 
U joint- I think I saw rebuilt kits that allow you to replace the 
bearings.  I also located a place on the West coast that offered 
rebuilt drive shafts- but I never could get them to return my phone 
calls.


Before I found my problem and was thinking like you that it could be 
the U joint and/or the center bearing I called Chris at Force 5 and 
just priced a used one.  As I remember the price was half of what 
rebuilder's wanted for a rebuilt one.

I admit- the job- to do it in your driveway- is a real pain and it 
took me a few days.  I was lucky and did it when I could ride my 
motorcycle to work.  Buy all new exhaust bolts.  I went all the way 
and replaced the bolts to the headers as well as the bolts/springs to 
the short pipes to the exhaust.  I found that the springs are 
stainless so they should be good-- they are way too expensive to use 
new ones.   I bought everything and almost dropped when they gave me 
the total bill-

You should get by with just the header bolts.

The problem is that you will not what is wrong until you drop the 
exhaust and pull the front CV from the transmission.  From there you 
can decide what you need to do.







>, but other people say it's a CV joint.  i've been given a part 
>number for the replacement:
>porsche 923 332 03200
>anybody know what year and model porsche this is for?
>
>it's been suggested that i might be able to fix the vibration by 
>simply re-greasing the joint, so i may try that if it has a good 
>chance of working.  the vibration isn't consistent, and most of the 
>time isn't noticeable, so i think the joint may be seizing up 
>occasionally.

-- 
Mark Turczyn