Gland Nuts for Boge Struts & Koni Inserts on 78 SC?

[silverlock]

OK, so we’re halfway through installing a new set of Koni strut inserts

* Koni’s are the 1039 Sports - https://www.*******.com/products/porsche-suspension-strut-assembly-koni-sport-86411039sport
* Car has Bilstein inserts we are replacing/refreshing
* Struts are Boge’s, but the P/N on them doesn’t quite match the PET. The car has 911.341.041.00 + 911.341.042.00 - in the PET the Boge’s for an SC are 911.341.043.02 + 911.341.044.02. PETs for mid-year cars and later 84+ cars don’t seem to match either?

Where we’re at:

* I think we need the OE gland nut - 911 341 804 00 - which isn’t used when folks put Bilstein inserts into the Boge struts? https://forums.pelicanparts.com/porsche-911-technical-forum/1073901-koni-inserts-boge-struts.html#post11575759
* Or the Koni gland nut? https://forums.pelicanparts.com/porsche-911-technical-forum/1022695-strange-gland-nut-koni.html

What gland nuts do I actually need?

[silverlock]

Also - this is the current nut holding down the Bilstein inserts. It’s too short for the Koni inserts and doesn’t hold it down:

[SBell]

I went through the same thing just recently with the same part # struts. I never was able to find them listen anywhere but I did get inserts that fit.

I'm putting mine on my SWB as part of my swap to later suspension so I used the orange 86-1647 inserts on Jason's recommendation. The gland nuts included with the insert seem to fit properly and are what I plan to use.

Sent from my SM-G991U using Tapatalk

[PeteKz]

Silverlock, not sure I understand what you mean that the gland nut is "too short". Does it not screw down far enough to hold the insert in the bottom of the strut? If so, look in your packaging for some spacers. My 1039s came with spacers to fill a gap between the gland nut and the top of the insert.

[silverlock]

Originally Posted by PeteKz

Silverlock, not sure I understand what you mean that the gland nut is "too short". Does it not screw down far enough to hold the insert in the bottom of the strut? If so, look in your packaging for some spacers. My 1039s came with spacers to fill a gap between the gland nut and the top of the insert.

That’s correct: there is a gap between the top of the insert and the bottom of the nut. No spacer came with my new-in-box Koni’s from what we can see.

Does the spacer look like the one from this thread? https://forums.pelicanparts.com/porsche-911-technical-forum/1073901-koni-inserts-boge-struts.html#post11039466

[silverlock]

I’m going to assume what we thought were Koni gland nuts — which shouldn’t be needed with Boge inserts — are actually spacers and were missing from the two strut boxes?

Circled in orange:

[silverlock]

This post seems to also reinforce that we may be missing a spacer: https://forums.pelicanparts.com/porsche-911-technical-forum/543939-koni-inserts-boge-struts.html

[silverlock]

The top of the Koni insert in the Boge strut. You can visualize how the top of the insert won’t sit “tight” against the factory-style gland nut.

I’ve emailed Paragon to confirm if the “Koni centering washer” (KONI-73.10.08.047.0) and the OE gland nut (911.341.804.01) are the right combo here.

Will report back once I hear from them.

(But don’t let that stop anyone else with first-hand experience here from commenting!)

[silverlock]

Adding the photo of the Koni 1039 strut insert in the Boge strut that I meant to attach before:

[mike sampsel]

Looks like "peragon-products" might have a gland nut which might work.


I'd give you the link but it keeps replacing the ***************** with stars. Search for it via gland nuts.

"https://www.*****************.com/Strut-Gland-Nut-For-Factory-internally-threaded-p/pp-911.341.804.01.htm"

"*****************"

WTHeck

Replace the e with and a in the first line quote!

[mike sampsel]

Maybe a pm won't star it out???

[snbush67]

I think these gland nuts were from Bilstein inserts into the 43/44 Boge. But they fit the koni inserts into the 41/42 Boge.

[silverlock]

A very, very helpful Jason at Paragon (who is mentioned across several threads here) helped me figure this out.

It's *not* the Porsche OE gland nut (911.341.804.01) for an SC w/ Boge's — or the Koni "011" (73.25.01.011.1) gland nut that is for the Koni 1039 inserts in Koni struts. Neither of those are correct.

There is a metal Koni gland nut that should have been in the box of the 1039 inserts and is for internally threaded struts — like the Boge's on an SC — that didn't seem to come with mine. That gland nut has the right shape for the top of the Koni insert.

Should arrive early next week. Will update with a photo for posterity.

[PeteKz]

Good to know you got it sorted with Paragon. To follow up, the first link you replied to me has a picture of the parts. The two black rings in that picture are the spacers I got with mine. I didn't need them on my early Boge struts, but they came with the shocks anyway.

[snbush67]

Originally Posted by silverlock

A very, very helpful Jason at Paragon (who is mentioned across several threads here) helped me figure this out.

It's *not* the Porsche OE gland nut (911.341.804.01) for an SC w/ Boge's — or the Koni "011" (73.25.01.011.1) gland nut that is for the Koni 1039 inserts in Koni struts. Neither of those are correct.

There is a metal Koni gland nut that should have been in the box of the 1039 inserts and is for externally threaded struts — like the Boge's on an SC — that didn't seem to come with mine. That gland nut has the right shape for the top of the Koni insert.

Should arrive early next week. Will update with a photo for posterity.

Did you make a typo? Or maybe I’m reading it wrong. The strut you show is has internal threads, a gland nut for externally threaded strut isn’t going to work.

[silverlock]

Originally Posted by snbush67

Did you make a typo? Or maybe I’m reading it wrong. The strut you show is has internal threads, a gland nut for externally threaded strut isn’t going to work.

Ugh. Yes. Meant internal - aka the Boges on SCs.

[silverlock]

Update:

The Koni gland nuts that were missing from both strut insert boxes — which had sealed bags with the nylock nuts / bushings / adj knobs — are part # 73.25.01.005.1 - and are effectively unavailable to buy directly. Koni doesn't list them anywhere.

We're putting the car back together today (rears were done) and looking forward to driving it with the new Koni's + fresh 21/26 torsion bars, up from the factory 19/24 bars after an alignment!

[PeteKz]

Start with the shock adjustments in the full soft position. After fiddling with mine, that's where I have left them for street use. I use 21/26mm bars too. The shock settings make a much bigger difference in how stiff the suspension feels than the bars. Keep the shocks soft.

[Bret Young]

I’d like to bring this post back to the top as I also have a similar question. Did a late model front end swap onto my ‘67 912. Had to swap out struts due to a fitment issue with the wheels (raised) and going back to stock Boge SC front struts with Koni inserts.

Strut part numbers are 911-341-044-00 and 911-341-041-00. Bought the Koni 86-1942 red strut inserts for them per direction from this board and the folks at Sierra Madre.

Well the gland nut that comes with the strut inserts does not fit the top of the Boge strut housing. Diameter is too large and the thread pitch is different. Hoping I didn’t order the wrong parts….

Attached are the gland nuts that came with the strut assemblies and the ones that came with the Koni’s.



Am I okay to use the old ones that came with old Boge inserts with the Koni’s or will that create problems?

Also - when test fitting these struts with the old upper gland nut, threading that gland nut on my hand until snug doesn’t allow me to tighten it down to where it seats. The insert is not moving inside so I don’t wanna torque it down and take a chance I damage the insert but is this a problem?



Any input is appreciated!

[TJJSC]

Sorry no picture but:




I used the nuts that came with the new Koni strut inserts.
On mine it turned out be a bit more than 4mm (nut flange spacing) once I've inserted the strut. so I decided to round/trim off a little from the bottom of the strut insert to ensure the nut had enough threads engaged in the strut.

PS. don't forget to add the cooling liquid!