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  1. #1
    CB750 New Member Shoenfeltj's Avatar
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    1980 CB750C Engine install questions

    I have a 1980 CB750C and as i was reinstalling the engine i noticed a gap between the top mounting bracket and the frame above the gearbox. And i put both spacers into position and put the bolt through and there is still a gap. I am wondering what i am missing ? (I have done some diggin on the internet and i cant seem to find anyone that has done a detailed install for the engine)

  2. #2
    CB750 Guru amc49's Avatar
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    http://www.cb750c.com/publicdocs/CB7...stallation.pdf

    5-5 shows the spacers in place and the one with turned down middle goes on left side of bike. There may be both a frame/harness ground and main battery ground cable that slips in there to be pinched if the size of the loop on end of wire is big enough. They go on right side of bike IIRC. As sitting on it.

  3. #3
    CB750 New Member Master_xela's Avatar
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    Iím having the exact same issue! Iíve got EVERYTHING in place and I still have a gap between the left upper engine spacer and the frame. Itís driving me mad!!!

  4. #4
    CB750 New Member Master_xela's Avatar
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    I figured it out!!! Thereís a spacer that goes behind the chain cover!

    https://www.ronniesmailorder.com/oem...b9671/oil-pump

    Itís #10 in the diagram! I hope this helps, Iíve been shaking my head ever since hahahahha

  5. #5
    CB750 Guru amc49's Avatar
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    Not really a spacer although the top serves as one. Considered part of the engine, it is a chain derailing prevention device. Should be bolted onto engine before it ever goes into frame.

  6. #6
    CB750 New Member Master_xela's Avatar
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    Thatís what happens when youíve got a bike apart for a while, my apologies for not using the correct terminology.

  7. #7
    CB750 Guru amc49's Avatar
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    The terminology is no issue, just that you are right about the 'a while' thing. I always have them on engine already and why it would never pop up as a problem. Others do differently. I need to remember that.

  8. #8
    CB750 New Member Master_xela's Avatar
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    Itís been a hell of a fight to get this thing back to rights. I had the engine out because it had never been touched, spent at least thirty hours cleaning and prepping the engine as it was in rough shape. Same with the frame. Luckily I didnít have to paint the wheels, but four hours each and a box of magic erasers is definitely a workout! Now that the engine is hard mounted I can start getting this thing back together!

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