1980 CT110 Air box plumbing removal question

Discussion in 'CT90, CT110, ST70, ST90 Discussion' started by northvancpF, Oct 11, 2016.

  1. northvancpF

    northvancpF Member

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    Hi. I recently purchased and installed a new air box from Dr. ATV. Fits great, perfect colour, all good except it doesn't have the oil drain and crankcase breather plumbing connections like my original one did.

    I eliminated the oil drain tubing but what to do about the crankcase tubing?

    I rerouted it to the left side of the engine and down the side, but should I leave the end open or plug it with a bolt?

    Is there any issue with eliminating these connections? 29713a5fedb1934206ea999693d5a2eb.jpg 8043f9a30e4f20b2f1d637bd6cf964d4.jpg
     
    #1 northvancpF, Oct 11, 2016
    Last edited by a moderator: Jul 17, 2017
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  3. b52bombardier1

    b52bombardier1 Well-Known Member

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    As those are pollution controls, it should probably only matter someplace like California or a state with some other visual inspection for pollution control equipment.

    Beyond that, I'd simply cap those areas off and make sure there are no vacuum leaks. Obviously, you will still need a crankcase vent tube and any 49 state CT110 bike hose should be ok for that.

    After that, ride on. Nice looking bike. No 110's here so I'm a bit jealous.

    Rick
     
    #2 b52bombardier1, Oct 11, 2016
    Last edited by a moderator: Jul 17, 2017
  4. northvancpF

    northvancpF Member

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    So the vent tube should just be rerouted to the bottom of the engine and left open?
     
    #3 northvancpF, Oct 11, 2016
    Last edited by a moderator: Jul 17, 2017
  5. b52bombardier1

    b52bombardier1 Well-Known Member

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    Yes. I'd source a standard 110 rubber crankcase vent tube and route it the same as every other non-California 110 bike does it.

    I like to keep things as OEM Honda as practical but as long as you have a functional crankcase vent of some kind, at least you won't be blowing oil past shaft seals.

    Rick
     
    #4 b52bombardier1, Oct 11, 2016
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