TR suspension set-up..Anything that isn't the same cost as a lunar landing?

Discussion in 'Boxers/TR/M' started by CMT, Feb 13, 2007.

  1. CMT

    CMT Formula Junior

    Dec 4, 2006
    East Mesa, AZ
    Full Name:
    Tony T.
    I am wanting to replace/update my suspension on the TR. The only thing I have found is the Norwood kit that costs the same as putting a man on the moon. Any other options?

    I would like to lower the ride height in the process so springs and shocks will be needed.


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  3. APA#1

    APA#1 Formula 3
    Rossa Subscribed

    Nov 5, 2003
    Central Florida
    I am doing the same thing right now. Saw the prices myself and almost shat..... We need 6 total, 4 rear, two front.

    I am making some custom shock mock ups to get the perfect ride height. Once I get the numbers I can order some customs shocks and springs that blow Koni away at 1/3rd the cost. I am also making the custom top mounts to accept these new shocks.

    They will be great when done. Stand by and I'll post when I set the height and give part#'s for the shocks.

    They will be DIRECT BOLT IN......
  4. uzz32soarer

    uzz32soarer F1 Rookie

    Sep 9, 2006
    Melbourne, Australia
    Full Name:
    Robert Hayden
    I'd like to look at mine some day also. It's certainly the oldest feeleing aspect of the car. Pushed hard into corners it drops the nose badly and can really dip on one side at the front when you don't neeed it to. Obviously due to soggy bounce and rebound of the shocks.

    Keep us informed of what you find.

    WILLIAM H Three Time F1 World Champ

    Nov 1, 2003
    Victory Circle
    Full Name:
    Just installed Penskes on the race car, they are around $750 @

    I plan on doing the bushings too, where to find the right ones is the question
  6. johng

    johng Formula 3

    Oct 23, 2004
    northern va
    Full Name:
    john g
    my first testarossa had a lower than normal ride height. lemme tell you, it was annoying. the front spoiler scraped everything. admittedly, the factory height at the front looks a bit high under the spoiler, and not particularly pretty, but it is so practical that i decided not to lower it for this car.
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  8. Jeff Pintler

    Jeff Pintler Formula Junior
    Silver Subscribed

    Jul 20, 2005
    Full Name:
    Jeff Pintler
    About bushings: I got all mine from T.Rutlands. There are four different ones, some of which look the same, so have them mark the part number on the plastic bag. I even ordered one bushing from Ferrari to make sure what they shipped was the right stuff (it was). The work was easy but you need a small bench top press to get things apart. The bushings have a metal outer sleeve so you can't burn the rubber out. I machined a bunch of metal collars to press everything apart. The parts came to about 750 and new rear shocks were 640 (for four) and motor mounts were 600. I did this in 2004 so prices may have changed alot. By the way, at the time the front shocks were un-available so my coming winter project is to get them rebuilt, and it was cheaper to replace the rears than rebuild by Koni. YMMV.

    Jeff Pintler
    89 348tb, 86 tr
    major at 7 years/20k miles. 3yrs Hah!

    WILLIAM H Three Time F1 World Champ

    Nov 1, 2003
    Victory Circle
    Full Name:
    I was testing the new Penske shocks at Watkins Glen during the National Meet, the car feels much more planted & secure on the road, I have more confidence & they are probably worth 3 seconds of more

    My race car used to rock side to side in corners but thats all gone w the new shocks

    I'm really happy w them

    My mechanic says the next step should be custom adjustable control arms, maybe next year

    BTW I was running WG at 2:10 w no 4th gear. I'd probably be close to 2:00 if I had 4th gear
  10. RED 4RE

    RED 4RE Karting

    Jul 18, 2005
    I sent my existing Koni's directly to Koni NA and had them revalved + shortened with new pistons + new shorter/stiffer springs added. Koni added adjustable threads to change ride height. They did a great job all for 350 per dampener (x 6) including new springs. they also repainted my shocks and added new stickers.

  11. Hawaii

    Hawaii Formula Junior

    Jan 28, 2007
    Full Name:
    Neat idea. Never would of thought to do that. Thanks for sharing that!
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  13. APA#1

    APA#1 Formula 3
    Rossa Subscribed

    Nov 5, 2003
    Central Florida
    Do you have a link for the Penskes you are using BH?
    Thanks, Craig

    WILLIAM H Three Time F1 World Champ

    Nov 1, 2003
    Victory Circle
    Full Name:
    I'll ask my crew chief for the info
  15. fly

    fly Karting

    Nov 20, 2003
    Sydney, Australia
    Full Name:
    Hi William, just following up on any info you might have on the Penske Shocks you are using.

    Thanks in advance William

  16. ace355

    ace355 Formula Junior

    May 23, 2008
    Full Name:
    Funny, I was just checking shock prices today...rears were $1500 each x 4 from Ricambi.
  17. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    Full Name:
    Steve Magnusson
    That's why the option that Doc described in post #8 makes total sense IMO. He went further with a different spring and piston too, but if the cost for "rebuild + adding the threaded, adjustable lower spring perch" is the same, or less, than a new (non-height adjustable) replacement, I'd go that way too -- JMO.

    WILLIAM H Three Time F1 World Champ

    Nov 1, 2003
    Victory Circle
    Full Name:
    #15 WILLIAM H, Feb 22, 2013
    Last edited by a moderator: Sep 7, 2017
    I believe they are 3 way adjustable Penskes
    Image Unavailable, Please Login
  19. kerrywittig

    kerrywittig Formula 3
    Rossa Subscribed BANNED

    Nov 10, 2005
    Ithaca, New York
    Full Name:
    Kerry David Wittig
    I had Koni rebuild the 4 rears.....$520.......and then installed Energy poly bushings through-out....Which I machined to fit the Testarossa.

    Stiffy Me

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