Notices
924/931/944/951/968 Forum Porsche 924, 924S, 931, 944, 944S, 944S2, 951, and 968 discussion, how-to guides, and technical help. (1976-1995)
Sponsored by:
Sponsored by:

968 Shift rod coupler bolt

Thread Tools
 
Search this Thread
 
Old 07-18-2016, 08:07 AM
  #16  
odonnell
Rennlist Member
 
odonnell's Avatar
 
Join Date: Nov 2012
Location: Houston TX
Posts: 4,772
Received 67 Likes on 49 Posts
Default

If you look at the point where the bolt goes in, you'll see that there are reliefs cut parallel with the shaft, and that the "aft-most" tab on the linkage has been changed to a rigid arm that departs at an angle. It could be the same bolt, I just wanted to draw attention to the different linkage design.

Yes, I rebuild them on order, but I posted the instructions somewhere if you ever want to have a stab at it yourself, happy to share more details on request.



Old 07-18-2016, 09:05 AM
  #17  
jellonailer
Rennlist Member
Thread Starter
 
jellonailer's Avatar
 
Join Date: Oct 2011
Location: Houston, Texas
Posts: 846
Likes: 0
Received 9 Likes on 9 Posts
Default

Bottom picture is beautiful. Doesn't look like the point is that critical as the shaft counter sink is big and shallow.

I think I will make it. M8x60

I really think the screw end should have countersink on it and a ball bearing should be slid in, retained by the screw and the countersink in the shaft. Either way would probably work. No real load on this, just vibration so the wire is the ticket.

Great info, thanks everyone.
Old 07-18-2016, 01:09 PM
  #18  
Otto Mechanic
Rennlist Member
 
Otto Mechanic's Avatar
 
Join Date: Jan 2015
Location: Paso Robles, CA (Under the lift)
Posts: 2,936
Received 14 Likes on 14 Posts
Default

Originally Posted by odonnell
If you look at the point where the bolt goes in, you'll see that there are reliefs cut parallel with the shaft, and that the "aft-most" tab on the linkage has been changed to a rigid arm that departs at an angle. It could be the same bolt, I just wanted to draw attention to the different linkage design.

Yes, I rebuild them on order, but I posted the instructions somewhere if you ever
I thought it was you. I just happen to have an original off my S2 I replaced with an only944 short shift kit a few weeks ago and I'm thinking of re-building it after reading your article, seems like a great way to keep some of these old parts in circulation. I haven't tried the new kit yet, so I'm not sure I'm going to like it, probably will though.

Honestly, even with the detailed description and the close up photos, I can't see what you're describing to me. Maybe it's my latent dyslexia at play...

There still seems to be confusion about the length. Mine's no larger than M8 x 16 not M8 x 60. Am I even looking at the same bolt?
Old 07-18-2016, 01:19 PM
  #19  
Dougs951S
Race Car
 
Dougs951S's Avatar
 
Join Date: Mar 2012
Location: Austin TX, drinking beer in the garage
Posts: 3,602
Likes: 0
Received 7 Likes on 7 Posts
Default

the bolt is not even close to 60mm long. 16mm is correct and the point actually IS important. if you get the angle wrong, get it lopsided, get the taper rate wrong, or make the point either too long or two small I promise you'll be calling a tow truck; take my word on that. its a cheap bolt, easily available from vendors. dont try and make it.
Old 07-18-2016, 03:22 PM
  #20  
jellonailer
Rennlist Member
Thread Starter
 
jellonailer's Avatar
 
Join Date: Oct 2011
Location: Houston, Texas
Posts: 846
Likes: 0
Received 9 Likes on 9 Posts
Default

Agree with that in general. I would look at machining it to save time not the $10, looks like 7-10 days shipping lead time. Don't see it in stock anywhere.
Old 07-18-2016, 07:36 PM
  #21  
jellonailer
Rennlist Member
Thread Starter
 
jellonailer's Avatar
 
Join Date: Oct 2011
Location: Houston, Texas
Posts: 846
Likes: 0
Received 9 Likes on 9 Posts
Default

Now to really mess with our minds - whats the torque spec for that bolt?

My guess is minimal, let the safety wire do the work and let the parts float relatively free.
Old 07-18-2016, 07:50 PM
  #22  
thomasmryan
Drifting
 
thomasmryan's Avatar
 
Join Date: Feb 2014
Location: smoky mountains
Posts: 2,585
Received 121 Likes on 89 Posts
Default

section 34-2 of the 968 wsm....21Nm(15ft-lbs)

the mounting bracket is 23/17
Old 07-18-2016, 07:54 PM
  #23  
Otto Mechanic
Rennlist Member
 
Otto Mechanic's Avatar
 
Join Date: Jan 2015
Location: Paso Robles, CA (Under the lift)
Posts: 2,936
Received 14 Likes on 14 Posts
Default

Originally Posted by jellonailer
Now to really mess with our minds - whats the torque spec for that bolt?

My guess is minimal, let the safety wire do the work and let the parts float relatively free.
The 944 manual doesn't mention it explicitly, likely generic for plated M8 1.25 pitch bolts ~ 20 ft/lbs.

Check it. YMMV.

Correction:

Generic M8 1.25 pitch 8.8 bolts:

Plated 25 nm Unplated 23 nm
Plated 18.75 ftlbs Unplated 17.25 ftlbs

Source: https://www.imperialsupplies.com/pdf...rquecharts.pdf

Last edited by Otto Mechanic; 07-18-2016 at 08:10 PM.
Old 07-18-2016, 08:13 PM
  #24  
Otto Mechanic
Rennlist Member
 
Otto Mechanic's Avatar
 
Join Date: Jan 2015
Location: Paso Robles, CA (Under the lift)
Posts: 2,936
Received 14 Likes on 14 Posts
Default

I think I'll use the more conservative values from the 968 manual. Thanks Thomas.
Old 07-18-2016, 08:44 PM
  #25  
Arominus
Race Car
 
Arominus's Avatar
 
Join Date: Jan 2009
Location: Colorado
Posts: 4,103
Likes: 0
Received 4 Likes on 4 Posts
Default

Originally Posted by jellonailer
Now to really mess with our minds - whats the torque spec for that bolt?

My guess is minimal, let the safety wire do the work and let the parts float relatively free.
Get it from your dealer, they will get it faster if it has to come out of Porsche stock. Pelican and the like order it from porsche, have it shipped to them, then ship it to you for things like that and you lose a lot of time.
Old 07-18-2016, 08:48 PM
  #26  
Dougs951S
Race Car
 
Dougs951S's Avatar
 
Join Date: Mar 2012
Location: Austin TX, drinking beer in the garage
Posts: 3,602
Likes: 0
Received 7 Likes on 7 Posts
Default

+ for the dealer, I just ordered a 996 tow hook for my 951, next day pickup and my local dealer for 10 bucks out the door. they were 35 - 40 bucks everywhere online. sometimes, though rare, the dealer is the best option.
Old 09-17-2017, 04:03 AM
  #27  
Otto Mechanic
Rennlist Member
 
Otto Mechanic's Avatar
 
Join Date: Jan 2015
Location: Paso Robles, CA (Under the lift)
Posts: 2,936
Received 14 Likes on 14 Posts
Default

Originally Posted by Dougs951S
+ for the dealer, I just ordered a 996 tow hook for my 951, next day pickup and my local dealer for 10 bucks out the door. they were 35 - 40 bucks everywhere online. sometimes, though rare, the dealer is the best option.
Thanks Doug. I honestly never would have thought about going through a dealer. It seems my "new to me" S2 doesn't have a tow hook so I'm borrowing one from my 928 (which fits perfectly BTW).

I want one for both cars though so I think I'll call Carlson on Monday.



Quick Reply: 968 Shift rod coupler bolt



All times are GMT -3. The time now is 01:18 AM.