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
> 1170 mile cv joint failure
mb911
post Aug 25 2022, 01:52 PM
Post #1


914 Guru
*****

Group: Members
Posts: 6,871
Joined: 2-January 09
From: Burlington wi
Member No.: 9,892
Region Association: Upper MidWest
Well 1170 miles on my cv joints. Driving last evening took off slow then gassed it in first. Let off shift to second and hit the gas again and pop. Cv cage broke.. well that sucks.. anyway time to replace with some other setup. I have some extra CVS and will install but wanting a more permanent solution.

For reference 2.4 -6 with S pistons, solex cams, ported heads. Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
930cabman
post Aug 25 2022, 02:12 PM
Post #2


Advanced Member
****

Group: Members
Posts: 3,128
Joined: 12-November 20
From: Buffalo
Member No.: 24,877
Region Association: North East States
cage may have had a small crack? was it a new joint?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mb911
post Aug 25 2022, 02:32 PM
Post #3


914 Guru
*****

Group: Members
Posts: 6,871
Joined: 2-January 09
From: Burlington wi
Member No.: 9,892
Region Association: Upper MidWest
QUOTE(930cabman @ Aug 25 2022, 12:12 PM) *

cage may have had a small crack? was it a new joint?



Yup brand new..
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Eric_Shea
post Aug 25 2022, 02:42 PM
Post #4


PMB Performance
***************

Group: Admin
Posts: 19,278
Joined: 3-September 03
From: Salt Lake City, UT
Member No.: 1,110
Region Association: Rocky Mountains
Where did you get them? What Brand? What -6 Engine?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Steve
post Aug 25 2022, 02:48 PM
Post #5


914 Guru
*****

Group: Members
Posts: 5,606
Joined: 14-June 03
From: Orange County, CA
Member No.: 822
Region Association: Southern California
QUOTE(mb911 @ Aug 25 2022, 12:52 PM) *

Well 1170 miles on my cv joints. Driving last evening took off slow then gassed it in first. Let off shift to second and hit the gas again and pop. Cv cage broke.. well that sucks.. anyway time to replace with some other setup. I have some extra CVS and will install but wanting a more permanent solution.

For reference 2.4 -6 with S pistons, solex cams, ported heads. Attached Image


They look like 914-4 CV joints. I would upgrade to 100mm CV joints.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
SirAndy
post Aug 25 2022, 03:12 PM
Post #6


Resident German
*************************

Group: Admin
Posts: 41,669
Joined: 21-January 03
From: Oakland, Kalifornia
Member No.: 179
Region Association: Northern California
QUOTE(Eric_Shea @ Aug 25 2022, 01:42 PM) *

Where did you get them? What Brand? What -6 Engine?

(IMG:style_emoticons/default/agree.gif)

If these are repurposed T1 CVs, those seem to have a tendency to explode when used in a 914. Seen it before ...
(IMG:style_emoticons/default/icon8.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Eric_Shea
post Aug 25 2022, 03:16 PM
Post #7


PMB Performance
***************

Group: Admin
Posts: 19,278
Joined: 3-September 03
From: Salt Lake City, UT
Member No.: 1,110
Region Association: Rocky Mountains
Sorry, I didn't see the 2.4S engine in the first thread...

I'd go this route:

http://www.914world.com/bbs2/index.php?showtopic=91963
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ClayPerrine
post Aug 26 2022, 08:04 AM
Post #8


Life's been good to me so far.....
***************

Group: Admin
Posts: 15,501
Joined: 11-September 03
From: Hurst, TX.
Member No.: 1,143
Region Association: NineFourteenerVille
From outside to inside.

1. 1976 911 Hub
2. 1976 922 stub axle
3. 1985 944 turbo CV joint.
4. 914-4 axle - turn it in the lathe and add about 15mm to the space beyond the splines.
5. 1985 944 turbo CV joint
6. 1976 911 coarse splined drive flanges.


The 944 turbo CV joint is a six bolt joint that is much thicker than a 914 cv joint, but the internal splines are the same as a 914-4. So the CV joint is capable of handling way more power than a stock 4 cylinder joint.

The axle has to be modified to accommodate the thicker 944 turbo CV joint.

The 76 911 hub, stub axle and drive flange are the same bolt pattern as the 944 turbo CV, and they use the same outer wheel bearing as a 914. So this all bolts together. You have to use 944 turbo CV joint gaskets and CV bolts.

The coarse splined drive flanges come from an early 915 transmission, but they will bolt into a 901 transmission with no modification.

You can use 944 turbo stub axles, but you have to add a spacer on the stub axle or the bearing won't tighten up.

Hope that helps.

Clay
User is online!Profile CardPM
Go to the top of the page
+Quote Post
mb911
post Aug 26 2022, 08:10 AM
Post #9


914 Guru
*****

Group: Members
Posts: 6,871
Joined: 2-January 09
From: Burlington wi
Member No.: 9,892
Region Association: Upper MidWest
Thanks.. a few things I decided after this happened.

A. I have to many cars to maintain. My sons have 5 total cars themselves and 2 of them are 944s

B. I have a non finished 928s4 that needs to go to a new home to get some space back

C. Going to just put a stock cv back on and take it easy the rest of the driving season.

D. Going to a 911/914 setup this winter. @mepstein has already provided most the parts to make this happen. I just need some time.

E did I already say I have to many cars to maintain lol? Anyone need a really nice 928s4 project (IMG:style_emoticons/default/biggrin.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Jack Standz
post Aug 26 2022, 10:40 AM
Post #10


Member
**

Group: Members
Posts: 278
Joined: 15-November 19
From: Happy Place (& surrounding area)
Member No.: 23,644
Region Association: None
Yes, a 928 S4 would be a nice project and yes, I want one (already have a complete drive train from a 928).

But, I have too many cars and too many projects. So, I guess I don't need one. (IMG:style_emoticons/default/dry.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mb911
post Aug 26 2022, 02:31 PM
Post #11


914 Guru
*****

Group: Members
Posts: 6,871
Joined: 2-January 09
From: Burlington wi
Member No.: 9,892
Region Association: Upper MidWest
QUOTE(Jack Standz @ Aug 26 2022, 08:40 AM) *

Yes, a 928 S4 would be a nice project and yes, I want one (already have a complete drive train from a 928).

But, I have too many cars and too many projects. So, I guess I don't need one. (IMG:style_emoticons/default/dry.gif)



Well I have it listed on market place and have some great walk around and start up videos.

https://www.facebook.com/marketplace/item/435211755239175/
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

Reply to this topicStart new topic
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 1st June 2024 - 06:05 AM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
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 ...