328 engine is this a modification

Discussion in 'Technical Q&A' started by dhs-9, Mar 10, 2004.

  1. dhs-9

    dhs-9 Formula Junior

    Feb 6, 2004
    #1 dhs-9, Mar 10, 2004
    Last edited by a moderator: Sep 7, 2017
    Could anyone tell me if a spring connected to the engine vibration mount in the front of the engine which extends to a point to the left of the throttle linkage is normal. I've never seen this before. Any ides what this could be. see attachement


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  3. 308GTS

    308GTS Formula 3

    Dec 27, 2001
    No it isn't stock.
  4. GrigioGuy

    GrigioGuy Splenda Daddy
    Lifetime Rossa Owner

    Nov 26, 2001
    E ' ' '/ F
    Full Name:
    Hans Olo
    Not normal. Most likely it's a secondary return spring for the throttle.
  5. flyingboa

    flyingboa Formula 3

    Nov 27, 2003
    Full Name:
    This is the way it should look like.


  6. Tod328gts

    Tod328gts Formula Junior

    Jul 23, 2003
    River Forest, IL
    Full Name:
    Tod Whitmore
    I bet someone added this thinking the throttle was getting stuck and it was only the floor mat (Cruise control) just causing the stuck throttle.

    Before i knew it was the carpet, i was trying to think, maybe there needs to be an extra spring to pull the throttle back to idle????
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  8. f355spider

    f355spider F1 World Champ
    Rossa Subscribed Owner

    May 29, 2001
    Agree with Tod, it was done either to correct the throttle not returning, or maybe it is a bit sticky. Either way, this is not a correct fix.
  9. Robert Johnson

    Robert Johnson Karting

    Dec 8, 2001
    San Diego
    Full Name:
    Robert Johnson
    Most racing bodies require 2 throttle return springs. What you have may have been required by the local autocross club or SCCA. Although, the stock throttel plate should have a return spring and the throttle position sensor should also be spring loaded. But it's up to the tech inspector on race day.

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