dead in the water......73 cb500 77 cb550 engine swap
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dead in the water......73 cb500 77 cb550 engine swap

This is a discussion on dead in the water......73 cb500 77 cb550 engine swap within the Technical forums, part of the Caferacer.net Forums category; so the other day i ended up getting the engine to fire on the swap i did around christmas time. dropped a 550 engine into ...

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  1. #1
    Member photoputz83's Avatar
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    dead in the water......73 cb500 77 cb550 engine swap

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Size:  97.2 KBso the other day i ended up getting the engine to fire on the swap i did around christmas time. dropped a 550 engine into a 500 frame. it ran multiple times for a minute or so each just to get the oil to lubricate the upper end after a rebuild. it was 40 degrees or so the other day so i decided to do it again and everything seemed to work properly (electrical and mechanical). then it just died. i cant get any juice to anything on the bike. the battery tests out good and when put on a charger instantly kicks over to float charging. sitting steady at around 12.3 volts. i replaced all the fuses and still no power or ignition. is there something that i could have fried in the process of running the bike? i took my multimeter to the main fuse and seem to be getting power to the fuse itself so it is somewhere after the main fuse in the system. any information would be helpful at this point. i would go out to the garage and do a full test with the multimeter but its only three degrees out currently and my hands dont want to work properly in this weather. wish i could just bring her into the livingroom to work!!!!
    Last edited by photoputz83; 02-16-2013 at 02:02 PM.

  2. #2
    Senior Member gene03079's Avatar
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    Have you checked the kill switch?
    Gene
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    Senior Member Geeto67's Avatar
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    Are you getting power to the main fuse or just continuity?

    check the ignition switch and also check that the kill switch is hooked up properly. Put a charger on the battery and make sure it has a full charge (when it is cold out and you have a flat battery it destroys it).
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    Member photoputz83's Avatar
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    battery is on a maintainer 75% of the time and a load test has been performed on the battery itself. the kill switch is new and hooked up properly although i will go into the headlight bucket and see if any of the connections came loose. i doubt it though. and as for the fuse......it is getting power as well as continuity.

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    Senior Member goldy's Avatar
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    Check the back of the fuse panel itself. Sometimes the wire on the back will break. If that's alright, see if you have power to the ignition switch and kill switch.
    Gotta be something simple...don't give up and keep us posted.
    “And this you can know – fear the time when Manself will not suffer and die for a concept, for this one quality is the foundation of Manself, and this one quality is man, distinctive in the universe.”
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    Senior Member crazypj's Avatar
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    Probably a tail light fault, something shorted when it fell off
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    Senior Member CurbTiger's Avatar
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    I thought the kill switch circuit grounds through through the front fen..der. Oh, no fender. That answers it right there.

    NE
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    Member photoputz83's Avatar
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    Quote Originally Posted by CurbTiger View Post
    I thought the kill switch circuit grounds through through the front fen..der. Oh, no fender. That answers it right there.

    NE
    there is a fender on the bike, and the ground isnt through the fender! i dont know why it would be through the fender as from the factory it never was.
    Last edited by photoputz83; 02-17-2013 at 12:59 PM.

  10. #9
    Member photoputz83's Avatar
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    Quote Originally Posted by crazypj View Post
    Probably a tail light fault, something shorted when it fell off
    tail light fell off? the tail light is an axle mount and is still in place.

  11. #10
    Member photoputz83's Avatar
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    Quote Originally Posted by goldy View Post
    Check the back of the fuse panel itself. Sometimes the wire on the back will break. If that's alright, see if you have power to the ignition switch and kill switch.
    Gotta be something simple...don't give up and keep us posted.
    i though that as well! but i pulled the fuse box off and looked yesterday and all the connection points are in place. did a full continuity test on the fuse box, and every part of the electrical panel and it seems to be fine. im actually thinking that the connection points in the headlight bucket itself came loose. with all the wiring that honda decided to put in the headlight bucket it would actually make sense. ill get out to the garage at some point today and take a peek at it. its going to be close to 30 degrees today so i can handle it haha.

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