Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
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.
 

Welcome Guest ( Log In | Register )

 
Reply to this topicStart new topic
> Bye Bye 4th Gear, Good thing I have a spare trans
tomeric914
post Jun 10 2015, 08:31 PM
Post #1


One Lap of America in a 914!
***

Group: Members
Posts: 1,266
Joined: 25-May 08
From: Syracuse, NY
Member No.: 9,101
Region Association: North East States



So... this happened (listen careful starting about 30 seconds in):


https://www.youtube.com/watch?v=jkzY2qJieCQ


The I drove it home and took it apart tonight to find this:

Attached Image

Engine is a 3.0. Most of the time at the track is in 4th gear.

The thing is, when I drained the trans 8 years ago, chunks came out. It was a POS box that lasted this long which is impressive. It wasn't until late last year that it would pop out of gear under light load. Under moderate to full load it was never a problem. What's weird is the sudden failure and that the synchros and sliders all look to be in decent shape.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
r_towle
post Jun 10 2015, 08:58 PM
Post #2


Custom Member
***************

Group: Members
Posts: 24,705
Joined: 9-January 03
From: Taxachusetts
Member No.: 124
Region Association: North East States



Ouch
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
screenguy914
post Jun 11 2015, 12:13 AM
Post #3


Member
**

Group: Members
Posts: 249
Joined: 6-July 09
From: So. Cal
Member No.: 10,540
Region Association: Southern California



I assume you use the suggested gear lube and treat the gearbox as gently as possible. Perhaps attach an oil cooler and circulation system as part of the rebuild or plan on scheduled gearset replacements.

Sherwood
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
tomeric914
post Jun 13 2015, 08:06 PM
Post #4


One Lap of America in a 914!
***

Group: Members
Posts: 1,266
Joined: 25-May 08
From: Syracuse, NY
Member No.: 9,101
Region Association: North East States



Whoops, missed this. Yes, correct lube, new gear oil after every season, smooth shifting. As mentioned earlier, it is/was a POS box that had chunks coming out of it 8 years ago. I'm surprised it lasted this long.

I doubt a cooler would help. There's no discoloration indicating overheating of the gears. I'll look into installing a temperature gauge for giggles.

QUOTE(screenguy914 @ Jun 11 2015, 02:13 AM) *

I assume you use the suggested gear lube and treat the gearbox as gently as possible. Perhaps attach an oil cooler and circulation system as part of the rebuild or plan on scheduled gearset replacements.

User is offlineProfile CardPM
Go to the top of the page
+Quote Post

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 25th April 2025 - 07:45 PM