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Re: Camaro Koni Shocks
Posted by: Wagon Master ()
Date: January 18, 2020 06:55AM

I'm still trying to absorb this one.

"If you want handling it doesn't come from the shocks."

There are alot of specialist, engineers and techs building and running shock dynos in all forms of auto racing that will be out of a job come Monday.

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Re: Camaro Koni Shocks
Posted by: flamingchariots ()
Date: January 18, 2020 11:51AM

davemotohead:

"Shocking"







Edited 147 time(s). Last edit at 01/18/2020 06:45am by MattNall.



Edited 147 times???

Kevin
Medina, OH

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Re: Camaro Koni Shocks
Posted by: MattNall ()
Date: January 18, 2020 12:19PM

Looks like Moto is having fun!











Edited 66 time(s). Last edit at 01/19/2020 12:19pm by Pelosi.

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Re: Camaro Koni Shocks
Posted by: v8vair ()
Date: January 18, 2020 01:31PM

My experience tells me with a stock rate spring a good quality shock works well. when you start using stiffer springs the shock has to be up to the task of controlling the movement/oscillations. Mike

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Re: Camaro Koni Shocks
Posted by: Seth Emerson ()
Date: January 18, 2020 01:53PM

On the Koni yellow shocks - at least the Camaro ones, the compression setting is designed into the shock, and is not adjustable. According to my Koni source, this is much higher compression on the Camaro than on the Corvair. I do not pretend to know why. (weight? Position?) The adjustment on the Yellow Koni is a tab out the top where a little plastic tool allows you to stiffen the rebound. That is equivalent to full compression and click/rotate on the Corvair Koni shock. The stock front Corvair shock used a large rubber bumper as it approached full compression. It was to be moved over to any replacement shock because it is not part of the shock absorber system, it is part of the front spring system. When we lowered these cars for road racing, we usually cut these down in height, but we didn't run without them. New Konis came with a miniature version of that bumper, probably to save the shock from abuse. We removed the Koni piece and replace the part with the GM bumper. It is possible to have Koni rebuild and re-valve the Corvair shocks - at least it was - and if you have stiffened up the rear springs - some fast Corvair racers are running very stiff rear springs - then it might be a benefit to have them re-done. Corvairs did not use an upper bumper on the rear shock. They did use a tapered stop inside the upper mount for the rear spring. There was an aftermarket replacement bumper which would change the overall spring rate when contacted. It looks to me like the deal at Cal Corvair that Motohead mentions is the way to go.

Seth Emerson

Check my new Performance Corvair Web site [www.perfvair.com]

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Re: Camaro Koni Shocks
Posted by: jazzworkerbee ()
Date: March 12, 2021 09:55AM

Fellows,

I have finally made some forward progress. Last week, I installed the Camaro rears (80 1915) on my Corsa. That went WAY easier than I thought. The only issue was that after years of tightening the housing around shorter (non stock) steel sleeves, the stock length sleeves that I made and pressed in were too long and a mallet had to be used to get them into place. The fronts are another story. The GM A-Body Konis (8040 1017) are the right length, but there are NO aftermarket bushings for them. They are either the right OD and too short or the right length and the ID is too small. As it was my first attempt, I destroyed the originals when I pushed out the hangers. I ended up utilizing some hole saw plugs that were just a bit larger than the shock eye with a 1/2" hole in them to accommodate the sleeve. My first attempt was with hourglass bushings, but they wouldn't stay in place and didn't feel very sturdy. I ended up slicing a short bushing (with the correct OD) on my band saw, pressed them in with some E6000 and left them in a vise for 30 hours. The chemical engineer I spoke to at the company that makes the stuff in Louisiana said that it was an unusual, but plausible application and it should bond the steel to the polyurethane and remain flexible. What really sold me on the stuff is that it can stretch to 7x it's natural state and will return when tension is released. Three days on and they're holding! I'm still a little nervous, so I may add a locking sleeve clamps and check it OFTEN!

As a precaution, I convinced the guys at Koni in Sonoma, CA to send me a pair of stock bushings for the fronts, but they were REALLY reluctant to do so and kind of expensive. Regardless, if my solution fails, I can always take them to a local specialist and have them use their specialty tools to set them up right.

I said all that to say, This solution cost less than $250 and if successful, I hope that others might want to try and improve upon the process. There are some highly skilled folks on this forum and I really appreciate your patience and knowledge over the past year or so, since I started building this car.

Next, brake lines and front discs...

Until next time,

Daniel Atkinson
Tacoma, WA
65 Turbocharged Corsa

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Re: Camaro Koni Shocks
Posted by: wittsend ()
Date: March 12, 2021 10:18AM

I'm not trying to contest experience and wisdom. That said it is interesting the the KB KG4550 shock listed (below) for the EM Corvairs have applications to many front engine cars that are of considerable weight - especially in the front. And for that matter the shock is listed as front/rear for EM Corvairs and there is even a significant difference front to back there.

So, is the concern about internal valving that much of an issue with the Camaro shocks? I realize he has a LM not an EM Corvair but the valving characteristics should be "similar" as they relate to a rear engine design characteristic.

I'm not saying the Camaro shocks would be Ok. I'm just ASKING (because I don't know) if the valving was that important then why is there such diverse application for KG4550 shock???

Avanti
II 1965-1985
Chevy
Bel Air 1955-1964
Biscayne 1958-1964
Corvair 1960-1964
Corvette 1963-1977, 1982
Impala 1959-1964
Pontiac
Bonneville 1961-1962
Catalina 1958-1962
Volvo
140 Series 1967-1974
164 1969-1975

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Re: Camaro Koni Shocks
Posted by: MattNall ()
Date: March 12, 2021 11:39AM

All you can do is try them! See if "HE" likes them.

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Re: Camaro Koni Shocks
Posted by: joelsplace ()
Date: March 12, 2021 04:43PM

Listing the same shock front and rear for an early tells you they are not valved for a Corvair. They could be valved for the front or rear but not both and probably neither. A wild guess would be an EM would need at least 3x the rebound damping on the rear vs the front.

Joel
Northlake, TX
5 Ultravans, 116 Corvairs and counting...

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Re: Camaro Koni Shocks
Posted by: jazzworkerbee ()
Date: March 12, 2021 04:56PM

I cut a half coil from the hard/shorter springs I had, painted and sleeved them with 1/2" silicone tubing on the top (the same stuff I'll be using for my crank case vent) and installed them with the shocks. They fit, but I won't know about functionality for a while. I didn't cut anything from the bottom of the bump stops yet. I want to see how it rides first.

There's still a ton to do before I can put it back on the ground.

Daniel

Daniel Atkinson
Tacoma, WA
65 Turbocharged Corsa

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Re: Camaro Koni Shocks
Posted by: jamesolefjensen ()
Date: March 13, 2021 09:43AM

It appears these Koni's are adjustable. I have Koni's on both my Corsa and Chevelle. A half turn adjustment is seat of the pants noticable so I bet these will work fine. (I'm thinking way soft in front and midway for the rears).

James
65 Corsa
SF Bay Area

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Re: Camaro Koni Shocks
Posted by: chris ()
Date: March 14, 2021 09:22AM

I already have Clark's shocks (inexpensive and good fit) but this seems like a decent option for others. Thanks for sharing.

'66 Monza coupe
4 speed
140hp
Gardner, KS

Heart of America Corvair Owners Association

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Re: Camaro Koni Shocks
Posted by: jazzworkerbee ()
Date: March 17, 2021 09:17AM

Forgot to share the rears. Pardon the mess in my garage. Between my beekeeping and the garden, this is a busy time of year!

Daniel Atkinson
Tacoma, WA
65 Turbocharged Corsa

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Re: Camaro Koni Shocks
Posted by: jazzworkerbee ()
Date: April 06, 2021 09:20PM

Update... I got my hubs back from the machine shop and have the front brakes mocked up. Still need to get a 9mm Allen socket. I have read on this forum that some people have had trouble fitting Wilwood calipers to Scarebird brackets. I didn't have that problem, so maybe they changed the design a bit, However, I am having trouble with the clips that hold the flexible line to the wheel well in front. They don't seem to pop up high enough to allow the clip to bite. I don't want to force it, Is there something I'm missing or so I just need to be more aggressive with a hammer?

Progress!!!

Daniel Atkinson
Tacoma, WA
65 Turbocharged Corsa

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Re: Camaro Koni Shocks
Posted by: Seth Emerson ()
Date: April 06, 2021 10:45PM

They don't seem to pop up high enough to allow the clip to bite.

Did you try the clip flipped over?

Seth Emerson

Check my new Performance Corvair Web site [www.perfvair.com]

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Re: Camaro Koni Shocks
Posted by: jazzworkerbee ()
Date: April 08, 2021 08:15AM

Yup and there isn’t quite enough space. I may try to wallow the hole out a little with a step bit to make extra space for the clip to gain purchase, but that’s the last resort. I think it’s the hoses for sure because the rubber lines that were on there have a taller, deeper groove and even has a spacer to remove some of that space.

Daniel Atkinson
Tacoma, WA
65 Turbocharged Corsa

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