911S strut assemblies, Inserts don't fit |
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911S strut assemblies, Inserts don't fit |
framos914 |
May 14 2019, 09:31 PM
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#1
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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 |
mepstein |
May 14 2019, 09:47 PM
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#2
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914-6 GT in waiting Group: Members Posts: 19,142 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.
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framos914 |
May 14 2019, 09:58 PM
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#3
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Member Group: Members Posts: 125 Joined: 15-May 14 From: Corona California Member No.: 17,353 Region Association: Southern California |
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. |
infraredcalvin |
May 14 2019, 10:01 PM
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#4
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Distracted Member Group: Members Posts: 1,496 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. |
Larmo63 |
May 14 2019, 10:04 PM
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#5
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Advanced Member Group: Members Posts: 4,264 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California |
Pictures might help us here, too.......?
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framos914 |
May 14 2019, 10:13 PM
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#6
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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.
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porschetub |
May 14 2019, 11:47 PM
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#7
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Advanced Member Group: Members Posts: 4,695 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. |
914Sixer |
May 15 2019, 06:02 AM
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#8
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914 Guru Group: Members Posts: 8,840 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) |
sixnotfour |
May 15 2019, 08:56 AM
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#9
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914 Wizard Group: Members Posts: 10,392 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 |
framos914 |
May 15 2019, 03:38 PM
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#10
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Member Group: Members Posts: 125 Joined: 15-May 14 From: Corona California Member No.: 17,353 Region Association: Southern California |
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. |
mepstein |
May 15 2019, 03:57 PM
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#11
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914-6 GT in waiting Group: Members Posts: 19,142 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.
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sixnotfour |
May 15 2019, 09:38 PM
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#12
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914 Wizard Group: Members Posts: 10,392 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains |
real Koni Strut housing /Spindles are special
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framos914 |
May 16 2019, 12:02 AM
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#13
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Member Group: Members Posts: 125 Joined: 15-May 14 From: Corona California Member No.: 17,353 Region Association: Southern California |
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framos914 |
May 16 2019, 12:03 AM
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#14
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Member Group: Members Posts: 125 Joined: 15-May 14 From: Corona California Member No.: 17,353 Region Association: Southern California |
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framos914 |
May 16 2019, 12:05 AM
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#15
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Member Group: Members Posts: 125 Joined: 15-May 14 From: Corona California Member No.: 17,353 Region Association: Southern California |
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framos914 |
May 16 2019, 12:11 AM
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#16
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Member Group: Members Posts: 125 Joined: 15-May 14 From: Corona California Member No.: 17,353 Region Association: Southern California |
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914Sixer |
May 16 2019, 06:12 AM
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#17
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914 Guru Group: Members Posts: 8,840 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.?
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infraredcalvin |
May 16 2019, 07:50 AM
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#18
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Distracted Member Group: Members Posts: 1,496 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.
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framos914 |
May 16 2019, 10:23 AM
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#19
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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
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sixnotfour |
May 16 2019, 01:09 PM
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#20
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914 Wizard Group: Members Posts: 10,392 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) |
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