Page 1 of 2 12 LastLast
Results 1 to 10 of 11

Thread: SWB: Koni or Bilstein?

  1. #1
    Senior Member
    Join Date
    Sep 2007
    Location
    Norway
    Posts
    950

    SWB: Koni or Bilstein?

    Hi guys!
    I have a '67 912 with 15mm ARB front/rear, suspension set low, 6/7x15 deep Fuchs and want a form sporty ride. I put on used set of Konis when doing the suspension(all rubber bushings) but feel the shocks (especially rear) should be renewed or renowated.

    I am looking at a new full set of shocks, but which type would you recomend, Koni or Bilstein?

    Driving mostly on the street, little circuit use but want a sporty ride.
    Attached Images Attached Images  
    '67 911S Sunroof, Polo Red(Project disguised as a G-model)
    '67 912 Sunroof, Light Ivory(Alive and kickin')
    '67 912 SWTarga, Signal Red(Project in the making)
    X: 67 911 Coupe + 67S Targa, 912, 924, 944, 928, 356

  2. #2
    In my experience, the Koni's (even on the softest setting) will be quite stiff on the rear, given your relatively light weight engine compared to the 911 engine for which the Koni's were intended. Chances are, your 912 originally came from the factory with Boge shocks, front and rear unless Koni's were special ordered. Check to see if your front strut housings are Boge or Koni. This will influence your choices for the front shocks. Koni's can be ordered to fit the front Boge housings, but you must be careful to order these particular (Koni into Boge) shocks. For around town and freeway driving I prefer Boge, although I admit I have two 912's with Koni's all around. They ride like buck boards on the surface streets as low speed. As far as Bilsteins go I do not use them. I suspect other members of this board will have differing opinions.

  3. #3
    Senior Member
    Join Date
    Sep 2007
    Location
    Norway
    Posts
    950
    Thanks Jim for your answer!
    Yes I have Boge struts with Koni inserts. I put new Bilsteins on my 67 1500 beetle last year and ride is exellent, form but not too stiff.
    I do not know if they make Koni/Bilstein for 912 weight?
    '67 911S Sunroof, Polo Red(Project disguised as a G-model)
    '67 912 Sunroof, Light Ivory(Alive and kickin')
    '67 912 SWTarga, Signal Red(Project in the making)
    X: 67 911 Coupe + 67S Targa, 912, 924, 944, 928, 356

  4. #4
    Senior Member haul's Avatar
    Join Date
    Jul 2014
    Location
    bavaria
    Posts
    2,333
    on all my cars:
    bilstein gas dampers...
    the koni are just stiff...sink down. .end of the story...
    bilstein keep the level and provide an acceptable comfort & calculatable chassis movement..

    but everybody has a different comfort zone

    br
    haul
    59 750 pre unit triton
    63 650 gray silver bikinitub triumph thunderbird
    70 650 astralred silver triumph bonneville
    65 912 slate gray "erwin"
    73 914 ravennagreen "ferdl"
    erwin_loves_polo

  5. #5
    Senior Member
    Join Date
    Sep 2007
    Location
    Norway
    Posts
    950
    Quote Originally Posted by haul View Post
    on all my cars:
    bilstein gas dampers...
    the koni are just stiff...sink down. .end of the story...
    bilstein keep the level and provide an acceptable comfort & calculatable chassis movement..

    but everybody has a different comfort zone

    br
    haul
    Thanks Haul! Will try source Bilsteins!
    '67 911S Sunroof, Polo Red(Project disguised as a G-model)
    '67 912 Sunroof, Light Ivory(Alive and kickin')
    '67 912 SWTarga, Signal Red(Project in the making)
    X: 67 911 Coupe + 67S Targa, 912, 924, 944, 928, 356

  6. #6
    Senior Member haul's Avatar
    Join Date
    Jul 2014
    Location
    bavaria
    Posts
    2,333
    No. P36-0111 did not exist anymore. But we can deliver P36-0112 (new part no. 34-001127) which is similar to P36-0111 but only a little bit shorter. To fit the cars till ´68 you have to use a flat washer witch you have to put in the bottom of the tube in order to reach similar length to fit it in correct position. This tricky solution in known by all Porsche specialists

    Best Regards / Mit freundlichen Grüßen,
    XXXX XXXX
    Aftermarket Sales Manager

    ThyssenKrupp Bilstein Tuning GmbH
    Unit 3, Swannington Road
    Broughton Astley
    LE9 6TU
    England
    59 750 pre unit triton
    63 650 gray silver bikinitub triumph thunderbird
    70 650 astralred silver triumph bonneville
    65 912 slate gray "erwin"
    73 914 ravennagreen "ferdl"
    erwin_loves_polo

  7. #7
    Senior Member
    Join Date
    Sep 2007
    Location
    Norway
    Posts
    950
    Quote Originally Posted by haul View Post
    No. P36-0111 did not exist anymore. But we can deliver P36-0112 (new part no. 34-001127) which is similar to P36-0111 but only a little bit shorter. To fit the cars till ´68 you have to use a flat washer witch you have to put in the bottom of the tube in order to reach similar length to fit it in correct position. This tricky solution in known by all Porsche specialists

    Best Regards / Mit freundlichen Grüßen,
    XXXX XXXX
    Aftermarket Sales Manager


    ThyssenKrupp Bilstein Tuning GmbH
    Unit 3, Swannington Road
    Broughton Astley
    LE9 6TU
    England
    Thanks for good info!!
    Are there a specific type for rear on SWB 912 or same as 911?
    And are these adjustable?
    '67 911S Sunroof, Polo Red(Project disguised as a G-model)
    '67 912 Sunroof, Light Ivory(Alive and kickin')
    '67 912 SWTarga, Signal Red(Project in the making)
    X: 67 911 Coupe + 67S Targa, 912, 924, 944, 928, 356

  8. #8
    Quote Originally Posted by 91167coupe View Post
    Hi guys!
    I have a '67 912 with 15mm ARB front/rear, suspension set low, 6/7x15 deep Fuchs and want a form sporty ride. I put on used set of Konis when doing the suspension(all rubber bushings) but feel the shocks (especially rear) should be renewed or renowated.

    I am looking at a new full set of shocks, but which type would you recomend, Koni or Bilstein?

    Driving mostly on the street, little circuit use but want a sporty ride.
    Very cool car.

    Everyone has their opinions, and dampers/suspension setups can be super subjective. Trick is, you really only want to do it once.

    Personally, the green Bilstein HDs I was talked into leave me wishing I had stuck with Koni reds. The Bilsteins are fine once you're over 50~ mph or so, and the way the car rolls into a bend is nice, but the ride at anything under 50 mph is "jiggly" with a ton of up-down body movement that just wasn't there before with Koni reds. From what I understand, Koni yellows are worse.

    Bilsteins can be made really nice, but you need someone who knows what they're doing on the revalve. Years ago, I did a track test with Bilstein Sports off the shelf back to back with revalved Bilstein Sports in two setups in the same 911 SC at Sears Point. The difference was night and day between off the shelf and the first revalve—car felt 25 years newer and was so much nicer and more confidence inspiring. I have since driven several air-cooled 911 road cars with re-valved Bilsteins that were just wonderful, and have wondered about having my HDs revalved.

    If I had it to do over again, however, I'd have rebuilt a set of Koni reds—unless, that is, Bilstein has changed its damping philosophy more recently. YMMV, and I am sure others will weigh in.

  9. #9
    Senior Member
    Join Date
    Sep 2007
    Location
    Norway
    Posts
    950
    Quote Originally Posted by stout View Post
    Very cool car.

    Everyone has their opinions, and dampers/suspension setups can be super subjective. Trick is, you really only want to do it once.

    Personally, the green Bilstein HDs I was talked into leave me wishing I had stuck with Koni reds. The Bilsteins are fine once you're over 50~ mph or so, and the way the car rolls into a bend is nice, but the ride at anything under 50 mph is "jiggly" with a ton of up-down body movement that just wasn't there before with Koni reds. From what I understand, Koni yellows are worse.

    Bilsteins can be made really nice, but you need someone who knows what they're doing on the revalve. Years ago, I did a track test with Bilstein Sports off the shelf back to back with revalved Bilstein Sports in two setups in the same 911 SC at Sears Point. The difference was night and day between off the shelf and the first revalve—car felt 25 years newer and was so much nicer and more confidence inspiring. I have since driven several air-cooled 911 road cars with re-valved Bilsteins that were just wonderful, and have wondered about having my HDs revalved.

    If I had it to do over again, however, I'd have rebuilt a set of Koni reds—unless, that is, Bilstein has changed its damping philosophy more recently. YMMV, and I am sure others will weigh in.
    Thanks Stout for your thought!
    I will check with suppliers here in Norway fir availsbillity and price. Also if it is soneone who can do service on either myred Konis or Bilsteins.
    '67 911S Sunroof, Polo Red(Project disguised as a G-model)
    '67 912 Sunroof, Light Ivory(Alive and kickin')
    '67 912 SWTarga, Signal Red(Project in the making)
    X: 67 911 Coupe + 67S Targa, 912, 924, 944, 928, 356

  10. #10
    Senior Member Chris Pomares's Avatar
    Join Date
    Aug 2010
    Location
    Colorado
    Posts
    2,090
    My 67 came with Koni when new. So I have no experience with Boge or Bilstein on this car. That said I just changed from SWB 3.0 to LWB 3.5 S Koni struts and went with the stiffer middle setting. I stiffened up the rear settings as well. I run 19/24 T bars and 15/15 sways. The car feels compliant to me.
    What I find interesting is the car is much smoother going over dips and speed bumps than the softer setting I had before.
    Last edited by Chris Pomares; 09-27-2020 at 07:24 AM.
    1959 Auratium Green 356A Super w/ Rudge wheels
    1970 Irish Green 914-6 w/2.2S
    Current -1967 Bahama Yellow 912 POLO 2cam4 #1
    www.reSeeWorks.com
    Personalized Vintage Porsche's and parts
    I couldn't find the sports car of my dreams, so I built it myself-Ferdinand Porsche

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Message Board Disclaimer and Terms of Use
This is a public forum. Messages posted here can be viewed by the public. The Early 911S Registry is not responsible for messages posted in its online forums, and any message will express the views of the author and not the Early 911S Registry. Use of online forums shall constitute the agreement of the user not to post anything of religious or political content, false and defamatory, inaccurate, abusive, vulgar, hateful, harassing, obscene, profane, sexually oriented, threatening, invasive of a person's privacy, or otherwise to violate the law and the further agreement of the user to be solely responsible for and hold the Early 911S Registry harmless in the event of any claim based on their message. Any viewer who finds a message objectionable should contact us immediately by email. The Early 911S Registry has the ability to remove objectionable messages and we will make every effort to do so, within a reasonable time frame, if we determine that removal is necessary.