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#2353055 - 08/13/17 12:04 AM Anyone running Koni shocks?
AndyF Online   content
Too Many Posts

Registered: 01/20/03
Posts: 22565
Loc: Oregon
I picked up a set of Koni shocks for my '65 B body and thought I'd check in to see if anyone else is using them on a classic Mopar.

I like the adjustability of the Koni shock which is why I wanted to use them but I was expecting them to be a bolt in. The fronts are close to a bolt in but the upper bushing that Koni sends with the shocks has no chance of fitting so I replaced it with a normal two part bushing that most everyone else uses.

The rear shock is a little more puzzling but I think I've figured it out. The lower bushing is only 5/8 diameter so no way will it fit on the 11/16 stud in the shock plate. The Koni shock is also a little too short for my car. So I'm going to build some new shock plates with a 5/8 stud and move the stud up and in a little bit. That will solve the length issue as well as the mounting issue.

This kind of stuff doesn't stop me in my tracks these days since I'm fully equipped to build my own custom parts but I feel sorry for the more typical guy working out of his garage. When you buy expensive name brand parts like Koni shocks I'd expect them to bolt on. Some engineer at Koni didn't bother to even look up the correct mounting specs for Mopar vehicles before throwing this design over the wall to production.

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#2353095 - 08/13/17 05:53 AM Re: Anyone running Koni shocks? [Re: AndyF]
BigBlockMopar Offline
master

Registered: 01/22/03
Posts: 3045
Loc: The Netherlands
Did you get the Koni 'Classic' adjustable shocks?

I have a pair on the back of my '62 Chrysler NewYorker which I bought used.

Do recall there was something with the bushings indeed.
I think I was able to push out liners and replace the bushings with regular ones that fit without issues. No machining was involved.

Their length was OK in recall.

Koni is a Dutch manufacturer of shocks and they are fairly local to me.
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#2353196 - 08/13/17 11:55 AM Re: Anyone running Koni shocks? [Re: AndyF]
tahoechallenge Offline
enthusiast

Registered: 08/19/05
Posts: 295
Loc: Kings Beach, CA
I use them on my Challenger. I don't recall any issues with the fronts. The rears are shorter, and the lower mounting hole is like you said. I pressed in 5/8" bushings that I made from some hydraulic tubing. I made some tapered boxed extensions for the top of the shock. That way they are still bolt in.
I have over 12k on them with zero issues.

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#2353203 - 08/13/17 12:07 PM Re: Anyone running Koni shocks? [Re: tahoechallenge]
autoxcuda Offline
Too Many Posts

Registered: 01/20/03
Posts: 25223
Loc: So Cal
Originally Posted By tahoechallenge
I use them on my Challenger. I don't recall any issues with the fronts. The rears are shorter, and the lower mounting hole is like you said. I pressed in 5/8" bushings that I made from some hydraulic tubing. I made some tapered boxed extensions for the top of the shock. That way they are still bolt in.
I have over 12k on them with zero issues.


Have you run any other shocks on your challenger? How do these compare?

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#2353211 - 08/13/17 12:22 PM Re: Anyone running Koni shocks? [Re: autoxcuda]
tahoechallenge Offline
enthusiast

Registered: 08/19/05
Posts: 295
Loc: Kings Beach, CA
Just Monroe Classics. The adjustability is nice. I have the rear backed nearly all the way off. I have never done any type of track time, just spirited driving on mountain roads.

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#2353218 - 08/13/17 12:37 PM Re: Anyone running Koni shocks? [Re: tahoechallenge]
autoxcuda Offline
Too Many Posts

Registered: 01/20/03
Posts: 25223
Loc: So Cal
Originally Posted By tahoechallenge
Just Monroe Classics. The adjustability is nice. I have the rear backed nearly all the way off. I have never done any type of track time, just spirited driving on mountain roads.


Can you describe the differences and improvements?

What was it like with the rear not backed off?


Edited by autoxcuda (08/13/17 12:38 PM)
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#2353228 - 08/13/17 12:55 PM Re: Anyone running Koni shocks? [Re: AndyF]
tahoechallenge Offline
enthusiast

Registered: 08/19/05
Posts: 295
Loc: Kings Beach, CA
When going over bumps the rear would jar badly. Backing off the rear helped. I have factory 72 Cuda re arched springs.

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#2353276 - 08/13/17 02:18 PM Re: Anyone running Koni shocks? [Re: AndyF]
Bob J Offline
member

Registered: 11/16/16
Posts: 111
Loc: Colorado
Are they Koni yellows and if they are they build then for an one inch drop. Nice shocks I ran them on my Porsche 944 S2 and a lot of folks run them in Autocross in a bunch of different cars.
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#2354432 - Yesterday at 05:59 PM Re: Anyone running Koni shocks? [Re: AndyF]
Mopar Mitch Offline
super stock

Registered: 01/17/10
Posts: 962
Loc: NW Chicago suburban area
I've been running the RED adjustable Konis since the late 70s on my Challenger... had the fronts replaced once due to compression (dive) and causing them to fail... 2nd front set was rebuilt stiffer, along with eventually stepping up to much stiffer TBs (1.24 eventually).

I've played with the settings alot -- car dominantly used for SCCA AX from late 70s through early ~2000... and now HSAX/HPDE track time.

The fronts are set at full stiff; rears played with pending track/AX, etc... between 1/2-2/3-3/4 stiffness. the leafs are stiff (fiberglass monoleafs FLEXAFORM... 225#/5" unsprung arch. Too stiff rear shocks and the tire will lift off the pavement.. so.. ~2/3 stiffness max. (also pending choice of 3/4" or mostly used 1" rear sway bar).

I haven't had any installation problems front or rear.

Next set (car is apart now).. will likely be double-adjustable Viking or QA1... I've heard nothing but great things about the 2x adjustable shocks from AX/HSAX/HPDE guys running them.
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