Koni sports suspension - Alfa Romeo Bulletin Board & Forums
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post #1 of 14 (permalink) Old 02-18-2018, 09:25 AM Thread Starter
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Koni sports suspension

Hi I purchased a set of http://highwoodalfa.com/img/photos3/...65_188x250.jpg

And foolishly twisted the top of one of them so not sure of its position. Could someone confirm if clockwise is stiffer and also if I guess I could twist clockwise until stops and then wind back of the desired stiffness. For road use what should that be?

Thanks

Chris

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post #2 of 14 (permalink) Old 02-18-2018, 10:24 AM
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Quote:
Originally Posted by Alfanut1750 View Post
Hi I purchased a set of http://highwoodalfa.com/img/photos3/...65_188x250.jpg

And foolishly twisted the top of one of them so not sure of its position. Could someone confirm if clockwise is stiffer and also if I guess I could twist clockwise until stops and then wind back of the desired stiffness. For road use what should that be?

Thanks

Chris
You do know the adjustment only changes when you turn them when fully compressed, right?

Clockwise is stiffer AFAIK.

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post #3 of 14 (permalink) Old 02-18-2018, 10:46 AM
But Mad North-Northwest
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Here are all the instructions you need:

KONI NA | Adjustment Guides

With stock springs generally best to go full soft.
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post #4 of 14 (permalink) Old 02-18-2018, 12:36 PM Thread Starter
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Originally Posted by sebastiaan View Post
You do know the adjustment only changes when you turn them when fully compressed, right?

Clockwise is stiffer AFAIK.

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I didnít know that I just turned the top part of the piston rod. So I may not have made any changes then. I definitely didnít fully extend it and do anything to the top part of the cylinder.

Thx for the info
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post #5 of 14 (permalink) Old 02-18-2018, 12:37 PM Thread Starter
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Here are all the instructions you need:

KONI NA | Adjustment Guides

With stock springs generally best to go full soft.
Thx Iíve purchased the Harvey bailey kit from classic alfa. So shorter stiffer springs and thicker anti rollbar.
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post #6 of 14 (permalink) Old 02-18-2018, 03:33 PM
But Mad North-Northwest
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Then I'd ask them what they recommend. Though if you bought the yellows they're already stiffer than the reds.

Tom

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post #7 of 14 (permalink) Old 02-18-2018, 06:54 PM
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The softest setting on reds and yellows are very similar.

Ed Prytherch
79 Spider
85 GTV6 3L
76 Suzuki GT500
2011 Jaguar XKR

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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post #8 of 14 (permalink) Old 02-18-2018, 08:42 PM
But Mad North-Northwest
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The yellows are ~30% stiffer in compression and rebound out of the box. You need to adjust the Reds halfway through their adjustment range to get them to equal the yellows (at full soft) in rebound.
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1963 Giulia Spider (1750 engine)
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post #9 of 14 (permalink) Old 02-19-2018, 05:36 AM
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They are almost identical in compression: http://www.alfabb.com/bb/forums/alfe...ml#post6806521

Ed Prytherch
79 Spider
85 GTV6 3L
76 Suzuki GT500
2011 Jaguar XKR

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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post #10 of 14 (permalink) Old 02-19-2018, 09:44 AM
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Sigh. Okay, fine, for one specific measured shock the compression rate looks about the same. However, the current discussion is about adjustment settings, and Konis are not adjustable for compression, only rebound. And those plotted rebound data look pretty much like the Koni graph.

So, no, the softest settings are not similar, and the yellows start out ~30% stiffer than the reds.

Alfanut, Classic Alfa have a lot of experience and can likely recommend a setting. Usually starting at full soft on Konis is a good idea. You don't mention your car, but on my 115 when I upgraded to stiffer springs I went halfway on the reds, which would put them about at the starting point for yellows. This seems to work well for road use.

Tom

1963 Giulia Spider (1750 engine)
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post #11 of 14 (permalink) Old 02-19-2018, 11:33 AM
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The range of rebound on a Koni yellow is about 400% and you think that 30% is significant? It is less than 1 click.

Ed Prytherch
79 Spider
85 GTV6 3L
76 Suzuki GT500
2011 Jaguar XKR

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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post #12 of 14 (permalink) Old 02-19-2018, 06:05 PM
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Double sigh. Bye, Ed.

Tom

1963 Giulia Spider (1750 engine)
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post #13 of 14 (permalink) Old 02-20-2018, 12:41 AM Thread Starter
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Quote:
Originally Posted by Gubi View Post
Sigh. Okay, fine, for one specific measured shock the compression rate looks about the same. However, the current discussion is about adjustment settings, and Konis are not adjustable for compression, only rebound. And those plotted rebound data look pretty much like the Koni graph.

So, no, the softest settings are not similar, and the yellows start out ~30% stiffer than the reds.

Alfanut, Classic Alfa have a lot of experience and can likely recommend a setting. Usually starting at full soft on Konis is a good idea. You don't mention your car, but on my 115 when I upgraded to stiffer springs I went halfway on the reds, which would put them about at the starting point for yellows. This seems to work well for road use.
Ok thanks I'll talk to them.

Thx all.
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post #14 of 14 (permalink) Old 02-21-2018, 12:53 PM
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Do note that most new Koni's have rubber stoppers on the long shaft that prevents them from being compressed enough to engage the adjusting pawls. You have to remove them to make any adjustment at all.

Many of us just remove the rubber bushing altogether.

Robert
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