 Shift Knob - They keep breaking |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
  |
| mmichalik |
 Nov 8 2021, 12:46 PM
Post
#1
|
|
MikeM  Group: Members Posts: 697 Joined: 27-January 16 From: Valley Center, CA Member No.: 19,600 Region Association: Southern California 
 |
I have been using the standard, aftermarket, Dansk shift knob. So far, I've gone through two of them, they both have broken around the bottom where the shift knob mates with the shifter itself.
The plastic on both appears to have just given away. I like the look of the original style shift knob but, I don't want to continually replace them either. Anyone have any suggestions on a replacement? |
   |
 
|
| Van B |
Nov 8 2021, 12:51 PM
Post
#2
|
|
Senior Member Group: Members Posts: 1,586 Joined: 20-October 21 From: Maryland Member No.: 26,011 Region Association: None
|
How?? The shift knob on my car is original, and other than a little crazing on the clear epoxy over the shift pattern, it's in perfect condition!
|
|
|
|
| Superhawk996 |
Nov 8 2021, 01:13 PM
Post
#3
|
|
914 Guru Group: Members Posts: 5,824 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
|
Three things come to mind:
1) Do you have the appropriate crush sleeve? 2a) No? Is it pivoting at the top and stressing the bottom by rocking? 2b) Yes? Is the crush sleeve too tight and stessing the knob leading to craking? Mabye Dansk hole a smidge too snug? 3) Is the shift rod seating deep enough in the Dansk knob? Is it only going in part way leading all the force and leverage to be on the thin necked down portion at the base of the shift knob rather than up in the knob Agree with comments above - never had one crack on me. Without blaming the victim. I can't imagine how that much force is being placed on the knob. Not saying your doing this but trying to speed shift a synchromesh transmission is a bad plan for a lot of reasons. |
 |
|
| mmichalik |
Nov 8 2021, 01:19 PM
Post
#4
|
|
MikeM Group: Members Posts: 697 Joined: 27-January 16 From: Valley Center, CA Member No.: 19,600 Region Association: Southern California
|
@Van_B They both broke like this: (about 2 years a part)
 |
|
|
|
| mmichalik |
Nov 8 2021, 01:22 PM
Post
#5
|
|
MikeM Group: Members Posts: 697 Joined: 27-January 16 From: Valley Center, CA Member No.: 19,600 Region Association: Southern California
|
@Superhawk996 I'm thinking it must be something close to #3.
I don't speed shift at all so, it's not that. But you can see where it cracked so, maybe #3 is why. It's not sitting down deep enough. |
|
|
|
| Superhawk996 |
Nov 8 2021, 01:34 PM
Post
#6
|
|
914 Guru Group: Members Posts: 5,824 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
|
I'll go dig out my OEM knob somewhere and measure the depth of the hole later tonight.
|
|
|
|
| jagalyn |
Nov 8 2021, 02:14 PM
Post
#7
|
|
True Patina Group: Members Posts: 414 Joined: 31-January 06 From: Scandia, MN Member No.: 5,503 Region Association: None 
|
QUOTE(Superhawk996 @ Nov 8 2021, 01:13 PM)  1) Do you have the appropriate crush sleeve? 2a) No? Is it pivoting at the top and stressing the bottom by rocking? 2b) Yes? Is the crush sleeve too tight and stessing the knob leading to craking? Mabye Dansk hole a smidge too snug? 3) Is the shift rod seating deep enough in the Dansk knob? Is it only going in part way leading all the force and leverage to be on the thin necked down portion at the base of the shift knob rather than up in the knob Makes sense… good to know. |
|
|
|
| NARP74 |
Nov 8 2021, 03:13 PM
Post
#8
|
|
Senior Member Group: Members Posts: 1,065 Joined: 29-July 20 From: Colorado, USA, Earth Member No.: 24,549 Region Association: Rocky Mountains |
I drilled a hole in a block of wood bigger than the shift pattern. Filed the edges to match the contour of the ball. Placed a couple of cloths between the wood and the shift knob, wacked it down with a dead blow hammer and got it seated down all the way.
|
|
|
|
| mmichalik |
Nov 8 2021, 05:50 PM
Post
#9
|
|
MikeM Group: Members Posts: 697 Joined: 27-January 16 From: Valley Center, CA Member No.: 19,600 Region Association: Southern California
|
Thanks everyone, for all the input.
I will continue to look and then make sure it's placed properly. I think I want one with a set screw in it. |
|
|
|
| StarBear |
Nov 8 2021, 06:13 PM
Post
#10
|
|
Senior Member Group: Members Posts: 1,885 Joined: 2-September 09 From: NJ Member No.: 10,753 Region Association: North East States
|
QUOTE(Van B @ Nov 8 2021, 01:51 PM) How?? The shift knob on my car is original, and other than a little crazing on the clear epoxy over the shift pattern, it's in perfect condition! Mine, too. That crazing is very normal and on every one I’ve ever seen. Had to remove it twice lately for shifter work. Use a new crush washer thingie. |
|
|
|
| robkammer |
Nov 12 2021, 01:06 PM
Post
#11
|
|
Member Group: Members Posts: 179 Joined: 7-January 21 From: Vermilion Ohio Member No.: 25,049 Region Association: North East States |
Somewhat connected to this, I'm going into my interior this winter. What is the best wat to remove the stock knob? Is it just press fit? Mine is on the shifter very nicely and I hate to break it removing it.
Thanks in advance |
|
|
|
| mepstein |
Nov 12 2021, 01:10 PM
Post
#12
|
|
914-6 GT in waiting Group: Members Posts: 19,272 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region
|
Best way I’ve found is cut a slot in a 2x4 the same width as the shift rod. Put it under the knob and tap the wood with a hammer.
Unfortunately, some people glue on the knob and it may have to be destroyed to remove. |
|
|
|
| StarBear |
Nov 12 2021, 02:49 PM
Post
#13
|
|
Senior Member Group: Members Posts: 1,885 Joined: 2-September 09 From: NJ Member No.: 10,753 Region Association: North East States
|
QUOTE(mepstein @ Nov 12 2021, 02:10 PM) Best way I’ve found is cut a slot in a 2x4 the same width as the shift rod. Put it under the knob and tap the wood with a hammer. Unfortunately, some people glue on the knob and it may have to be destroyed to remove. (IMG:style_emoticons/default/agree.gif) |
|
|
|
| johnhora |
Nov 12 2021, 03:50 PM
Post
#14
|
|
Senior Member Group: Members Posts: 866 Joined: 7-January 03 From: Derby City KY Member No.: 107 Region Association: None
|
mmichalik
Sparco makes one that is about the same size as OE and uses a allen bolt to lock...I have used the polished one before on track cars and they are nice and also rugged...fit the sifter rod perfectly https://www.ogracing.com/products/sparco-ra...=31776680312898 |
|
|
|
| bbrock |
Nov 12 2021, 04:05 PM
Post
#15
|
|
914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains
|
Can't offer any advice, but I had an original knob break almost identical to your top pic many years ago. I think I still have it in a spare parts bin for some reason. Just thought you might like to know you are not alone. (IMG:style_emoticons/default/beerchug.gif)
|
|
|
|
| bdstone914 |
Nov 12 2021, 04:23 PM
Post
#16
|
|
bdstone914 Group: Members Posts: 4,522 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
QUOTE(mmichalik @ Nov 8 2021, 12:46 PM) I have been using the standard, aftermarket, Dansk shift knob. So far, I've gone through two of them, they both have broken around the bottom where the shift knob mates with the shifter itself. The plastic on both appears to have just given away. I like the look of the original style shift knob but, I don't want to continually replace them either. Anyone have any suggestions on a replacement? @mmichalik Probably tbe crappy crush sleeve that comes with the Dansk knob. I noticed how thin it was and went on with little resistance. Get a Porsche crush sleeve. Might help to sleeve the lower end orad o rings to reduce movement. |
|
|
|
| Superhawk996 |
Nov 12 2021, 05:18 PM
Post
#17
|
|
914 Guru Group: Members Posts: 5,824 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
|
Forgot about this thread.
58mm is the depth of the OEM knob. |
|
|
|
| mmichalik |
Nov 12 2021, 05:29 PM
Post
#18
|
|
MikeM Group: Members Posts: 697 Joined: 27-January 16 From: Valley Center, CA Member No.: 19,600 Region Association: Southern California
|
Thanks to everyone for the responses here!
I appreciate it. |
|
|
|
| StarBear |
Nov 12 2021, 05:59 PM
Post
#19
|
|
Senior Member Group: Members Posts: 1,885 Joined: 2-September 09 From: NJ Member No.: 10,753 Region Association: North East States
|
QUOTE(bdstone914 @ Nov 12 2021, 05:23 PM) QUOTE(mmichalik @ Nov 8 2021, 12:46 PM) I have been using the standard, aftermarket, Dansk shift knob. So far, I've gone through two of them, they both have broken around the bottom where the shift knob mates with the shifter itself. The plastic on both appears to have just given away. I like the look of the original style shift knob but, I don't want to continually replace them either. Anyone have any suggestions on a replacement? @mmichalik Probably tbe crappy crush sleeve that comes with the Dansk knob. I noticed how thin it was and went on with little resistance. Get a Porsche crush sleeve. Might help to sleeve the lower end orad o rings to reduce movement. 1 1/2 wraps of regular masking tape worked for me to add dimension thickness to crush sleeve. |
|
|
|
| robkammer |
Nov 14 2021, 03:42 PM
Post
#20
|
|
Member Group: Members Posts: 179 Joined: 7-January 21 From: Vermilion Ohio Member No.: 25,049 Region Association: North East States |
Thanks guys. A 2x4 and a hammer, brings back my Ford days.
Rob |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 17th May 2024 - 04:34 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.