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 )

2 Pages V  1 2 >  
 Reply to this topicStart new topic
> 911S strut assemblies, Inserts don't fit
framos914
post May 14 2019, 09:31 PM
Post #1


Member
**

Group: Members
Posts: 125
Joined: 15-May 14
From: Corona California
Member No.: 17,353
Region Association: Southern California
Need help. My 75 2.0 has worn strut inserts, PO replaced front struts with what I believed were 1977 911S Koni struts part #911 341 079 16 stamped on it. Bought inserts Koni 86-1942. Problem is they bottom out before going in far enough to secure them with the round nut.
Could I have 72-74 911S struts? Did they have the same part number? And are those inserts (86-1638) just a little shorter to seat further down. The 1942s seem to be just about 12mm too long, body of the 1942 is 374mm long.

Tried getting info from a few places including Koni but no luck.
Thanks
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mepstein
post May 14 2019, 09:47 PM
Post #2


914-6 GT in waiting
***************

Group: Members
Posts: 19,918
Joined: 19-September 09
From: Landenberg, PA/Wilmington, DE
Member No.: 10,825
Region Association: MidAtlantic Region
Off the top of my head, it sounds like you are trying to put inserts made for 3 1/2" struts into a 3" strut. The later strut bodies are taller than the earlier ones.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
framos914
post May 14 2019, 09:58 PM
Post #3


Member
**

Group: Members
Posts: 125
Joined: 15-May 14
From: Corona California
Member No.: 17,353
Region Association: Southern California
QUOTE(mepstein @ May 14 2019, 08:47 PM) *

Off the top of my head, it sounds like you are trying to put inserts made for 3 1/2" struts into a 3" strut. The later strut bodies are taller than the earlier ones.

The struts are 3.5 inch, It also has the 911S aluminum calipers not the M calipers which I believe are the 3 inch.Even though the the receipt in the POs documents say 1977 suspension, it could be wrong. These components were installed on this car way back in 1980.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
infraredcalvin
post May 14 2019, 10:01 PM
Post #4


Distracted Member
***

Group: Members
Posts: 1,640
Joined: 25-August 08
From: Ladera Ranch, CA
Member No.: 9,463
Region Association: Southern California
it appears you have even earlier struts for 914-6/ 911 and 912, 68-72?

There is a superseded part number you get when searching which may be what’s fouling up your search.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Larmo63
post May 14 2019, 10:04 PM
Post #5


Advanced Member
****

Group: Members
Posts: 4,267
Joined: 3-March 14
From: San Clemente, Ca
Member No.: 17,068
Region Association: Southern California
Pictures might help us here, too.......?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
framos914
post May 14 2019, 10:13 PM
Post #6


Member
**

Group: Members
Posts: 125
Joined: 15-May 14
From: Corona California
Member No.: 17,353
Region Association: Southern California
I'll try to get pictures tomorrow if the mechanic at the shop doesn't sort it out. Getting the 86-1638 Konis tomorrow but cant find those dimensions to see if the're a bit shorter.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
porschetub
post May 14 2019, 11:47 PM
Post #7


Advanced Member
****

Group: Members
Posts: 4,837
Joined: 25-July 15
From: New Zealand
Member No.: 18,995
Region Association: None
I ordered replacements for what I knew were MY for my alloy crossbar,turned out I was right as the struts are the same era (911 SC) honestly had no idea.
Took a gamble really cause the OP also told me my gearbox was ok (IMG:style_emoticons/default/headbang.gif) (IMG:style_emoticons/default/headbang.gif) .
Part numbers change but those better than me have spoken,I will say I have been bitten before on wrong numbers.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
914Sixer
post May 15 2019, 06:02 AM
Post #8


914 Guru
*****

Group: Members
Posts: 9,140
Joined: 17-January 05
From: San Angelo Texas
Member No.: 3,457
Region Association: Southwest Region
I have a set of Koni 86-1942 and I have test fitted them in stock 73-on Boge Struts. You have to use the Boge nut but they fit. I have a set of 86-1647 which are made different but fit the same.

One on right is the 1942 and left one is 1647. BOTH are the same length. 14 1/2 inces or 37 cm.


Attached image(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sixnotfour
post May 15 2019, 08:56 AM
Post #9


914 Wizard
**********

Group: Members
Posts: 10,858
Joined: 12-September 04
From: Life Elevated..planet UT.
Member No.: 2,744
Region Association: Rocky Mountains
real Koni Struts.. require a unique shock insert ...call paragon products Koni 86-1638

https://www.paragon-products.com/Koni-Strut...8-p/86-1638.htm
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
framos914
post May 15 2019, 03:38 PM
Post #10


Member
**

Group: Members
Posts: 125
Joined: 15-May 14
From: Corona California
Member No.: 17,353
Region Association: Southern California
QUOTE(sixnotfour @ May 15 2019, 07:56 AM) *

real Koni Struts.. require a unique shock insert ...call paragon products Koni 86-1638

https://www.paragon-products.com/Koni-Strut...8-p/86-1638.htm

Thanks
Spoke with Jason at Paragon, he is 100% sure there is something at the bottom of the strut keeping the insert from dropping all the way down. The mechanic disagrees so I'll follow Jason's advice, pick up the car and take it apart myself.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mepstein
post May 15 2019, 03:57 PM
Post #11


914-6 GT in waiting
***************

Group: Members
Posts: 19,918
Joined: 19-September 09
From: Landenberg, PA/Wilmington, DE
Member No.: 10,825
Region Association: MidAtlantic Region
If it’s just one strut insert that won’t go down then I’m betting on a bent strut. If it’s both sides then I got nothing.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
sixnotfour
post May 15 2019, 09:38 PM
Post #12


914 Wizard
**********

Group: Members
Posts: 10,858
Joined: 12-September 04
From: Life Elevated..planet UT.
Member No.: 2,744
Region Association: Rocky Mountains
real Koni Strut housing /Spindles are special
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
framos914
post May 16 2019, 12:02 AM
Post #13


Member
**

Group: Members
Posts: 125
Joined: 15-May 14
From: Corona California
Member No.: 17,353
Region Association: Southern California
Attached Image
Passenger side strut
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
framos914
post May 16 2019, 12:03 AM
Post #14


Member
**

Group: Members
Posts: 125
Joined: 15-May 14
From: Corona California
Member No.: 17,353
Region Association: Southern California
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
framos914
post May 16 2019, 12:05 AM
Post #15


Member
**

Group: Members
Posts: 125
Joined: 15-May 14
From: Corona California
Member No.: 17,353
Region Association: Southern California
Attached Image
Old insert
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
framos914
post May 16 2019, 12:11 AM
Post #16


Member
**

Group: Members
Posts: 125
Joined: 15-May 14
From: Corona California
Member No.: 17,353
Region Association: Southern California
Attached Image
New 861942 insert
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
914Sixer
post May 16 2019, 06:12 AM
Post #17


914 Guru
*****

Group: Members
Posts: 9,140
Joined: 17-January 05
From: San Angelo Texas
Member No.: 3,457
Region Association: Southwest Region
I have never seen that type of Koni insert. The numbers I am seeing says it is 75-up strut. Made week 34 1974. Wondering about spacer in bottom of tube.?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
infraredcalvin
post May 16 2019, 07:50 AM
Post #18


Distracted Member
***

Group: Members
Posts: 1,640
Joined: 25-August 08
From: Ladera Ranch, CA
Member No.: 9,463
Region Association: Southern California
Something has to account for that tab at the bottom of the original insert.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
framos914
post May 16 2019, 10:23 AM
Post #19


Member
**

Group: Members
Posts: 125
Joined: 15-May 14
From: Corona California
Member No.: 17,353
Region Association: Southern California
The tab has two sides, I think on the original the shaft gets pushed down manually and catches on something to make ride adjustments. Next I'll take the strut completely out to have a good look in the housing and make there's nothing inside the housing
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sixnotfour
post May 16 2019, 01:09 PM
Post #20


914 Wizard
**********

Group: Members
Posts: 10,858
Joined: 12-September 04
From: Life Elevated..planet UT.
Member No.: 2,744
Region Association: Rocky Mountains
your missing some pieces,,ie still in tube..


Attached image(s)
Attached Image Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

2 Pages V  1 2 >
Reply to this topicStart new topic
1 User(s) are reading this topic (1 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: 31st May 2025 - 07:43 PM
Invision Power Board v9.1.4 © 2025  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 ...