I came across this interesting pair of rear shocks on an old race car, Koni 8210 - 1005 is the part number. Big knobs on the bottom to increase the firmness externally. I am pretty sure they are what Porsche would have used on race cars. Does anyone know anything about them? I was thinking about having them rebuilt and put on my 70 911S just for coolness factor.
They don’t have any upper caps and were that way when I took them off the car. Any recommendation for a Koni rebuilder, Pro Parts?
I have a pair I bought from Dave Conklin. Mine are Special “D”, 8210 1046, date codes are 2/73.
What’s the lengths of yours? I haven’t rebuilt mine yet. Still residing peacefully in the stash.
Michael
“Electricity is really just organized lightning”
-Dusty 70S Coupe
-S Registry #586
Were also used by Alpina until 68 on their BMW 02s and neue Klasse before they switched to Bilstein.
[QUOTE=VintageExcellen
They don’t have any upper caps and were that way when I took them off the car. Any recommendation for a Koni rebuilder, Pro Parts?[/QUOTE]
Hello, years ago, True Choice Motorsport rebuilt my double ajustable Koni for 914-6 GT. I was looking a pair for my 911T swb but I don't have found. Nice parts.
Originally Posted by 70SATMan
The ones I have are dated 4/72. Special D - is this an upgrade or? Most all early cars with Koni said Special D. At first I thought they were short but then I put a couple nuts on the end and pulled the out as far as they would go - they came out a bit more then…. around 640mm fully extended.
I looked a while ago at rebuilders and west coast was a shop in Los Angeles but it’s not there now and east coast was True Choice which changed to Performance shock inc.
ProParts USA in Arizona seems to be the current authorized rebuilder on this side of country https://propartsusa.com/pages/shock-services
Armando says they are early competition 911 parts. Looks very much like the 914-6GT version was close to the same thing, I think the orientation of the knob is clocked differently and the 914 has threaded collars for coil springs.
Here is a side by side picture with standard 69-71 shocks. The competition shocks are larger diameter like the 72+ shocks.
Knob detail - the knobs are made of pot metal and held onto the shaft with a roll pin and Allen screw. Finally there is a fiber O ring seal.
Off to the rebuilders they go….
I thought I'd responded in the thread but, don't think the post went through.. I don't know what the 'Special D' means exactly but, I've associated that with the Heavy Duty type.. Could be way off base, LOL. I need to pull mine out and measure as well. One of the knobs of mine have a small section broken off (missing). Would be a good print project.
Michael
“Electricity is really just organized lightning”
-Dusty 70S Coupe
-S Registry #586
It looks like the 911R, 11899005, Tour de France 1969, Larrousse/Gelin, has the same Koni ?
Ernie W
member of Early 911S Registry
Nice picture, yes looks the same.
I have two pairs of these, one pair rebuilt by Truechoice who also rebuilt the double adjustable Koni setup in RSR struts on my track car. The other pair only adjusts the rebound with the knob, usually they adjust compression and rebound together. . Truechoice can also convert std. Koni struts to double adjustable with the low knob. I had a pair for 356 rear also and none had dust covers. I have one swb strut with the knob and one lwb strut with it if someone is interested or can provide a single to match. I’ve always loved the look of the rears, fronts are not real visible.
Last edited by 66S; 07-28-2023 at 03:30 PM.
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