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Crankshaft pulley fall off !! Timer belt Shifted 80% out about to fall off.

Discussion in 'Engine Building' started by osix, Oct 22, 2015.

  1. osix

    osix New Member

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    While going out on a ride today . if i recall correctly i was driving toward a redlight and ai heard a loud banging sound near the engine . thinking i hit some kinda stone or a reflected pebble . i drove for another 100 meter or so before i notice the battery light came on . and the engine seem to different . so i stop to have a look . about 500 meter down the road.

    Saw a few belt hanging . Mainly the Aircon ./ dynamo / and one other belt .

    Reach under the bumper and notice the Crankshaft pulley hanging by the pulley belt

    The Timer belt is like 80% falling off. I try to push it back a few time and start my engine but it keep shifting outward as if it would slip off i repeat that almost 4-5 time and each time it shifted outward .

    now i pondering what do i need to take note and save my New Toy .
    12176279_10206158550697351_1074643710_o.jpg

    The timer belt i only manage to push the top part back in but the lower part is hanging on the edge of the gear. once i start the engine the top part of the belt would shift itself outward as if it would fall off .

    12181818_10206158549457320_306811710_n.jpg
     
  2. CAFROG

    CAFROG Honda Minion VIP

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    Your crank pulley has a bolt and a key. Im guessing you've lost one or both. It's hard to say but it is possible that it has done some serious damage.
     
  3. whiterabbit06

    whiterabbit06 Why oh why didn't I take the blue pill? VIP

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    It's hard to tell from that picture but could the crank have broken?
     
  4. osix

    osix New Member

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    The bolt Broke off. And how i just lifted the engine i will update more photo soon
     
  5. CAFROG

    CAFROG Honda Minion VIP

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    Did you get the rest of the bolt out of the crank? Did you damage the valves or pistons? I know a tired timing belt that breaks can ruin an entire motor. Sometimes, people get lucky (belt breaks at idle and motor is shut off immediately). This situation seems very similar.
     
  6. osix

    osix New Member

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    i am replacing the Crankshaft .

    and got a new one today .

    While fitting i find that the Bearing inside is too small ?

    The crankshaft bearing need to be larger. almost 2mm i think .

    Any idea anyone ?

    i also got new timer Belt . The seller gave me Honda City Timer belt is it the right one ?
     
  7. osix

    osix New Member

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    This is not the photo of the crankshaft i got . But just an example .

    i found a crankshaft . but when i try to fit it .
    Mine seem to have a larger Diameter of point " a " and point " b "

    i try to fit it with the old crank bearning and seem like it too small .

    every part is the same .

    only the Shaft between is larger .
    Is it better ?

    Do i try to find a another Crank bearing to fit it


    -

    What happen why the old Crankshaft have a smaller diameter on "a & b "

    almost 2 mm .


    10-24-2015 10-28-56 PM.jpg
     
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