News

308GTSi timing gear trouble

Discussion in 'Technical Q&A' started by sarukichi, Nov 8, 2004.

  1. sarukichi

    sarukichi Rookie

    Sep 20, 2004
    19
    JAPAN
    Full Name:
    TAKASHI KOGA
    Dear all, please advice me.
    I was planning to change the timing belt at the garage and found that the timing gear has a slight move from the shaft.
    It turns 5mm on each side of the rolling direction. And also 1~2mm front or backward.
    The nuts at the center is tight enough and the shaft itself does not move to wrong direction.
    The decition of the mechanic is that hole of the gear itself became large and because of that, it moves.
    Is anybody had this kind of trouble and also if anybody has spare gears even 2hand, I would like to buy. As long as this gear is no longer manufactured.

    I am sure that this post is written with bad English, and exprenation and the spells are not good or enough, but if anybody understood my situation, please advice to me.
    Thank you very much
     
  2. To remove this ad click here.

  3. Ferrari_tech

    Ferrari_tech Formula 3

    Jul 28, 2003
    1,527
    UK
    Full Name:
    Malcolm W
    Takashi,

    The gears are available, as you can see from the picture there are two different types, one has the belt guide on the inside and the other has the guide on the outside.

    Item 11 is part # 113097
    Item 12 is part # 113098

    They cost £173.40 each plus shipping etc.
     
  4. sarukichi

    sarukichi Rookie

    Sep 20, 2004
    19
    JAPAN
    Full Name:
    TAKASHI KOGA
    Dear Malcolm,
    Thank you for the information.
    I am sorry for the poor exprenation.
    What I am looking for is No28.
    I believe that this is no longer manufacture, aren't they?
    If you have the stock for '80 308GTSi, please let me know.
    Thank you very much.
     
  5. Ferrari_tech

    Ferrari_tech Formula 3

    Jul 28, 2003
    1,527
    UK
    Full Name:
    Malcolm W
    Sadly you are correct, item 28 is no longer available, the Ferrari part number is 112018.

    I will do a worldwide search and if anything comes up I will let you know.
     
  6. Ferrari_tech

    Ferrari_tech Formula 3

    Jul 28, 2003
    1,527
    UK
    Full Name:
    Malcolm W
  7. To remove this ad click here.

  8. sarukichi

    sarukichi Rookie

    Sep 20, 2004
    19
    JAPAN
    Full Name:
    TAKASHI KOGA
    Thank you for the reply.
    yes, I am checking this topic everyday.
    The situation is similar to me.
    But as I am not the one to touch the motor, my mechanic told me that the shaft itself did not move by hand and because of that he says that the bealing should be okay.
    But anyway, I will ask him to let me touch the shaft myself and with that, I will think about changing bealings.
    Thank you.
     
  9. Rifledriver

    Rifledriver Two Time F1 World Champ

    Apr 29, 2004
    27,086
    Austin TX
    Full Name:
    Brian Crall
    If it moves for and aft as well as rotationally I have to agree with Malcom, the bearing are highly suspect. Also Malcom is a parts guy, ask him how often he sells bearings and how often he sells lower sprockets.
     
  10. Ferrari_tech

    Ferrari_tech Formula 3

    Jul 28, 2003
    1,527
    UK
    Full Name:
    Malcolm W
    Good point, last sold a set of bearings last week 22/10/2004 and the lower gear............22/10/2000
     
  11. sarukichi

    sarukichi Rookie

    Sep 20, 2004
    19
    JAPAN
    Full Name:
    TAKASHI KOGA
    Wow, great information!!
    I will talk with the guy tomorrow(it's 3am already here in Japan and I am just back to home, hehehe)
     
  12. To remove this ad click here.

  13. sarukichi

    sarukichi Rookie

    Sep 20, 2004
    19
    JAPAN
    Full Name:
    TAKASHI KOGA
    By the way, is it possible to change the bealing with the motor on the car?
    What do I need to change them?(any gaskets?)
    Is there any special tools to loosen the nuts of the pulley?
    Sorry for more questions but let me know.
    Thank you
     
  14. Sean F.

    Sean F. F1 Rookie

    Feb 4, 2003
    3,003
    Kansas
    Full Name:
    Sean F
    Malcom,

    what is the best way to contact you through e-mail?? or PM?

    I have a distributor question I think you can help with.

    Thanks

    Sean F.
     
  15. Ferrari_tech

    Ferrari_tech Formula 3

    Jul 28, 2003
    1,527
    UK
    Full Name:
    Malcolm W
    Sean,

    Either will get straight through to me.
     
  16. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    10,530
    San Carlos, CA
    Full Name:
    Mitchell Le
    Check the monster thread on "Changing the Timing Gear Bearing" that is going on right now.
     
  17. sarukichi

    sarukichi Rookie

    Sep 20, 2004
    19
    JAPAN
    Full Name:
    TAKASHI KOGA
    #14 sarukichi, Nov 9, 2004
    Last edited by a moderator: Sep 7, 2017
    Dear all,
    My trouble solved.
    Please see the attached photo.
    The knock pin(Key pin) for lower pulley of the timing belt slimed.
    As my opinion, previous owner changed the belt but did not tighten the nuts of the pulley correctly and that cause loosen pulley and the move of the pulley slimed the pin, I believe.

    Anyway, thank you for all and your advice surely helped me.
    Image Unavailable, Please Login
     
  18. Ferrari_tech

    Ferrari_tech Formula 3

    Jul 28, 2003
    1,527
    UK
    Full Name:
    Malcolm W
    A lucky escape, I'm pleased for you - I guess there wasn't any damage caused to the shaft.
     
  19. BigTex

    BigTex Seven Time F1 World Champ
    Rossa Subscribed Owner

    Dec 6, 2002
    74,136
    Houston, Texas
    Full Name:
    Bubba
    we name you...."lucky dog!"....LOL!
     
  20. jwise

    jwise Formula Junior

    Apr 2, 2003
    781
    Portland Maine
    Thanks for the update.

    I would have never thought "butchered woodruff key" would be the cause of you gear movement. Seem obvious in hindsight.
     

Share This Page