Transmission Linkage Issues?, What's the current thinking on "renewing" linkage? |
|
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. |
|
Transmission Linkage Issues?, What's the current thinking on "renewing" linkage? |
earossi |
Aug 31 2014, 08:57 PM
Post
#1
|
Member Group: Members Posts: 210 Joined: 8-December 11 From: Chicago, Il Member No.: 13,878 Region Association: Upper MidWest |
As noted earlier, I have just taken delivery of my first 914 which has had both the engine and transmission "rebuilt". Unfortunately, I do NOT have the build history on either component. The engine seems to run very well. The transmission is another story. Shifting is very vague and it is HARD to shift the car. I have been able to work the tranny through all 5 gears, and there are no bearing noises or evidence of bad synchs. But, the linkage appears to be f****ed up pretty poorly. It takes a lot of force to move the shifter forward or rearward. And, hitting the correct gears is a bit of a hit or miss.
I have been able to research the Pelican site where there is a writeup by Wayne Dempsy on reworking the linkage and doing some adjustments. But, I wonder what else is out there. On this forum, I have seen references to some linkage articles in the archives, but have not been able to find much using the Search function. There are also several sources for replacement bushings, bearings, and hardware. But, what is the "hot ticket" to get the tranny to shift smoothly and with some ease? Though this is my first 914, my first Porsche was a 66 911 with a 901 tranny in it and I can remember it being a joy to shift. You could not speed shift the car, but it was very easy to shift. And, I am wondering if I can get the 914 side shift tranny to behave as did my 911? I can source hardware from Patrick MS, Tangerine Racing, Pelican, and Porsche......but, what should I replace and with whose part to get this tranny so that it is easily shifted? Right now, the car is a true PITA to drive simply because of the linkage or perhaps something internal to the tranny. Iwould like to work through a proper diagnosis and adjustment of the linkage first, to see if that fixes my problems. I kind of feel that the issue is linkage related, at this point. So, I would appreciate some direction from this forum. |
Dave_Darling |
Aug 31 2014, 10:11 PM
Post
#2
|
914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
The bushing "super kit" from Pelican ought to go quite a way toward improving the shifting in your car.
Correcting some of the other issues that may have developed in the linkage will help more. Those "other issues" are primarily wear of metal parts that hold the bushings or that bear on the bushings. The side-shift console can wear on the hole where the castle bushing goes, and that will make for extra slop. The plate under the gear shift lever can wear, and that will make for extra slop. Even the rear shift rod, where it goes through the castle bushing in the side shift console, can wear down over the years. For more precision, the Rennshift gear shift lever from JWest Engineering (I think Pelican carries them as well?) takes all the slop out of the gear shift lever itself; in combination with the linkage improvements above it makes the whole thing much better. Tangerine Racing (Racer Chris on here) makes a kit that extends the rear shift rod and puts a second support on the rear of the side shift console. I think JWest made such a kit, and there may have been others over the years. There are also kits that replace the firewall bushing with a bearing. Those evidently all make some improvements, supporting and locating the linkage even more precisely. But I'd start with new bushings and set screws and an inspection of where the parts all slide against each other. --DD |
Lo-Fi Version | Time is now: 9th June 2024 - 10:30 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |