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360 ~ (( Need Your Help!! )) 360 6-Speed Manual gears won't engage when car is hot

Discussion in '360/430' started by OceanSide760, Jul 5, 2019.

  1. OceanSide760

    OceanSide760 Karting

    Jul 8, 2009
    172
    Guys need your input here. I have a 2003 360 Modena with 6-Speed Manual Transmission (75K miles, clutch & transmission mount has been replaced)

    Recently I realized that the gears won't engage after the car has been driven for a while (gears are totally fine when the engine is cold). When this happens I can't fully engage to 2nd / 3rd gear when I am in 4th gear, and I can hear the "grinding noise" when I put into 5th...

    Any thoughts?

    Thanks for your input.
     
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  3. Bigilo

    Bigilo Karting

    Sep 28, 2013
    226
    San Antonio, Texas
    Have you looked at your motor and transmission mounts? As they degrade the position of the transmission changes and pulls the shift cables out of alignment, the motor warming up will affect the cable positions as well. Also Hill Engineering makes a shifter bushing that is metal instead of plastic like the original, my 2004 had similar issues and the Hill bushing fixed it. Good luck!
     
  4. OceanSide760

    OceanSide760 Karting

    Jul 8, 2009
    172
    Thank you. Can you show me the link of the hill engineering bushings? And how many do I need?
     
  5. Bigilo

    Bigilo Karting

    Sep 28, 2013
    226
    San Antonio, Texas
  6. RedNeck

    RedNeck F1 Veteran
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  8. OceanSide760

    OceanSide760 Karting

    Jul 8, 2009
    172
  9. RedTaxi

    RedTaxi Formula 3
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    Mar 1, 2012
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    Just the one. It's more of a clevis than an actual bush.
     
  10. GCalo

    GCalo F1 Veteran

    Sep 15, 2004
    7,008
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    Greg Calo
    You might also want to consider bleeding your brakes and clutch M/C and replacing fluid.

    When you say shifting problem when hot sounds like there could be air in the system
     
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  11. OceanSide760

    OceanSide760 Karting

    Jul 8, 2009
    172
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  13. tonyc

    tonyc Formula 3

    Oct 19, 2003
    1,481
    Monterey, CA
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    Tony C
    Interesting puzzle you have there. Does the grinding happen at all RPMs ? When I hear grinding, I always think time to look at the synchros. Replacing M/C fluid was suggested, maybe replace gear oil and look for shavings and have the oil analyzed.

    Also someone mentioned motor and transmission mounts. What is the easiest way to look at them to see if they are shot?
     
  14. one4torque

    one4torque Formula 3

    May 20, 2018
    2,176
    Houston
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    One4torque
    Bushing, and or adj shifter cables. Gl
     
  15. brogenville

    brogenville Formula Junior
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    Apr 24, 2012
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    Robin
    Bleed clutch.

    That doesn’t fix it, you probably need a new clutch and possibly a flywheel re-grind.
     
  16. blackbolt22

    blackbolt22 F1 Veteran

    Sep 25, 2007
    5,480
    Boca, FL
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    Mr. Anderson
    Do a search from my threads. 430 manual transmission issues.

    I had similar problems. Everything was replaced.. I had a faulty heat exchanger which was replaced but it had leaked fluid into transmission and damaged it. I went to a new mechanic who removed transmission and found problem.

    too much to type right now. But mine shifted perfectly when cold, as it got hotter it was almost impossible to shift. t
     
  17. vrsurgeon

    vrsurgeon F1 World Champ
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    Dec 13, 2009
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    Charleston, SC
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    Curt
    bleed the clutch, then go after other issues. is there film of oil on the coolant in the coolant tank?
     
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  18. RedNeck

    RedNeck F1 Veteran
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    Surely they didn’t have to remove the transmission because of the heat exchanger failure.... did they replace any internals?
     
  19. blackbolt22

    blackbolt22 F1 Veteran

    Sep 25, 2007
    5,480
    Boca, FL
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    You have to find my thread. It's all there. No. The heat exchanger was replaced w/o removal of transm but there was internal damage to the transmission. Shifted great when cold, then almost impossible when hot. Now it's way better but doesn't shift as well when hot to this day. Good luck.
     

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