Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Thrust Bearing Failure (Almost?)

Thread Tools
 
Search this Thread
 
Old 11-10-2014, 10:20 AM
  #16  
prescott
 
prescott's Avatar
 
Join Date: Mar 2013
Location: Prescott, AZ
Posts: 432
Likes: 0
Received 11 Likes on 8 Posts
Default

You should have this in the new owners section for us NOOBS.

DONT TOUCH THE CLUTCH when starting

Man I learn a lot from you guys!
Old 11-10-2014, 10:31 AM
  #17  
Mrmerlin
Team Owner
 
Mrmerlin's Avatar
 
Join Date: May 2004
Location: Philly PA
Posts: 27,870
Received 2,243 Likes on 1,241 Posts
Default

It would prolong the life of the thrust bearing if you first start the engine,
then press the clutch this will let oil fill the thrust bearing,
though there will still be oil in the crank groove prior to starting
Old 11-10-2014, 11:57 AM
  #18  
Wisconsin Joe
Nordschleife Master
 
Wisconsin Joe's Avatar
 
Join Date: Jan 2013
Location: Kaukauna Wisconsin
Posts: 5,925
Received 302 Likes on 231 Posts
Default

Originally Posted by mickster
Really? So start the car in Neutral with the clutch out? Does that apply to all years?
Originally Posted by Dave928S
It not only applies to all year 928's, but all cars. Only use the clutch when you really need to, for changing gear ... and never 'ride' it.
I've had a bunch of manual tranny cars over the years, and the Porsches are the only ones that didn't have a "clutch safety switch" in them.
Even my latest work truck now has one (14 International ProStar semi). None of the old ones did (mix of Freightliners and Internationals).

If the clutch isn't down to the floor, the starter won't crank.
Old 11-10-2014, 12:57 PM
  #19  
BPG_Austin
Burning Brakes
 
BPG_Austin's Avatar
 
Join Date: Jan 2007
Location: Austin, TX
Posts: 970
Likes: 0
Received 1 Like on 1 Post
Default

Here's my 100k mile '87 auto with early TBF. Its been a long time, but I think max speck is .015". This measured at .019". No damage to engine. I put in new mains and rods and she was just fine. Although, its a lot of work..
Attached Images  
Old 11-10-2014, 02:46 PM
  #20  
85euro928
Rennlist Member
Thread Starter
 
85euro928's Avatar
 
Join Date: Jan 2009
Location: Hampster Bays, LI
Posts: 1,334
Received 87 Likes on 44 Posts
Default

On a manual car does the crank continue to grind against the thrust bearing after the car is started, or is it only during start up when the clutch is in that we need to worry? Does the wear stop once the oil is slung in to the space between the face of the bearing and the crank?
Old 11-10-2014, 11:57 PM
  #21  
Fogey1
Rennlist Member
 
Fogey1's Avatar
 
Join Date: Oct 2004
Location: Y-Bridge City, Zanesville, Ohio
Posts: 2,210
Received 5 Likes on 5 Posts
Default

Originally Posted by AO
It looks like there is still a lot of material on both sides. ...
Originally Posted by Tazzieman
Unlike Dave's avatar
Originally Posted by Dave928S
You noticed ...
The thing I like is that it looks like where you're from in two senses.
Old 11-11-2014, 12:17 AM
  #22  
Tazzieman
Instructor
 
Tazzieman's Avatar
 
Join Date: Oct 2009
Location: Tasmania
Posts: 239
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by Fogey1
The thing I like is that it looks like where you're from in two senses.
They sell the T shirts to tourists http://4.bp.blogspot.com/_Bv1n0yWwEj...0/IMGP2238.JPG



Quick Reply: Thrust Bearing Failure (Almost?)



All times are GMT -3. The time now is 02:44 PM.