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> Noisy Axles, Is there a trick I don't know about?
John
post Apr 25 2005, 12:01 PM
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This past weekend, I did my first track event of the year (have been doing them for the last 18 years).

I started hearing a clunking noise from the rear. It sounded like it was coming from the Left Rear (Driver side). I checked it out and the only thing I could find was that if you grab the axle shaft and vigerously shake it side to side, the axle shaft will bottom out and cause the clunking sound I am hearing out on the track.

What I believe has happened is that there is no grease left at the end between the stub shaft and the end of the axle to cusion the shaft movement.

Here is part of my problem. I bought the axle shafts from Patrick Motorsports 2-3 years ago when I did the 915/916 transmission, and they are different axle shafts. The stub shaft is connected to the CV joint and the other CV joint (tranny end) has a sealing cap crimped to it. I don't know if it is perminantly attached, or if it comes off.

Are the axle shafts worn out when you can move the axle shaft like this, or do they need grease. If they need grease, how do I get the grease in where I think they need it?

The only changes I made to the rear suspension this winter was to lower it about 3/4" (axle shafts are horizontal), increase the spring rate from 350# to 400#, and align it. I have checked everything out and nothing is loose.

Any ideas, suggestions, or wisecracks welcomed.
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Posts in this topic
JOHNMAN   Noisy Axles   Apr 25 2005, 12:01 PM
914fire   Hey glad to see somebody else from the area with a...   Apr 25 2005, 12:04 PM
JOHNMAN   Not all 914's live in Calyfornya. What part o...   Apr 25 2005, 12:12 PM
914fire   I live just north of the airport but the 914 has b...   Apr 25 2005, 12:17 PM
davep   Were the CV's cleaned and packed before they w...   Apr 25 2005, 12:48 PM
slivel   If you are hearing noise then in my opinion the sa...   Apr 25 2005, 12:57 PM
Eric_Shea   The axles shouldn't hit the stub axle. What...   Apr 25 2005, 02:40 PM
davep   I thought the 911 axles were shorter, although Bra...   Apr 25 2005, 04:35 PM
Eric_Shea     Apr 25 2005, 04:43 PM
JOHNMAN   These perticular axles came from Patrick Motorspor...   Apr 26 2005, 02:39 PM
JOHNMAN   Yup they are 911 axles. I pulled them out tonight...   Apr 26 2005, 11:54 PM
JOHNMAN   Another Pic. I took out the spacers and got the a...   Apr 26 2005, 11:58 PM
Eric_Shea   Did you find any dimples or dents on the caps?   Apr 27 2005, 08:11 AM
JOHNMAN   No there were no dimples or dents in the caps. Th...   May 16 2005, 12:21 AM
JOHNMAN   As an update to the noisy CV joints. I replaced t...   Jul 8 2005, 09:49 PM
ArtechnikA   most guys running track events repack the CV's...   Jul 9 2005, 07:40 AM
JOHNMAN  
  Jul 9 2005, 06:00 PM
ArtechnikA     Jul 10 2005, 05:56 AM
JOHNMAN   Well, since these axles are not going to be doing ...   Jul 11 2005, 11:58 AM


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