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This is a discussion on cb360 carbs within the Technical forums, part of the Caferacer.net Forums category; can anyone explain why the A vs B carbs for the cb/cl/cj models have either an 110 main or 100 main? I'm trying to dial ...

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  1. #1
    Senior Member roccitycafe's Avatar
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    cb360 carbs

    can anyone explain why the A vs B carbs for the cb/cl/cj models have either an 110 main or 100 main? I'm trying to dial in my carbs after the 378 overbore and this threw me off a bit...

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    Senior Member spacmanspif300's Avatar
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    Whatever happened to your cafe XS650? Finish it? I don't know anything about the 360.

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    Senior Member spacmanspif300's Avatar
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    Whatever happened to your cafe XS650? Finish it? I don't know anything about the 360.

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    Senior Member roccitycafe's Avatar
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    the friend helping me build it is... well... either lazy or incredibly patient, in that he never wants to work on it, so I'm either re-negotiating the split on the sale profit and finishing it myself, or trying my hand at motivational speaking :-P

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    Senior Member roccitycafe's Avatar
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    the friend helping me build it is... well... either lazy or incredibly patient, in that he never wants to work on it, so I'm either re-negotiating the split on the sale profit and finishing it myself, or trying my hand at motivational speaking :-P

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    Senior Member JM360's Avatar
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    quote:Originally posted by roccitycafe

    the friend helping me build it is... well... either lazy or incredibly patient, in that he never wants to work on it, so I'm either re-negotiating the split on the sale profit and finishing it myself, or trying my hand at motivational speaking :-P
    Did you use the suzuki pistons to get to 378? Don't know about A vs B. but I know my CL 360 came with 100 main jets. I have 110s in it now because it has no muffler.
    Weak as wet toilet paper.

    1967-CL77, 1975-CL360, 2011-DR650SE

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    Senior Member roccitycafe's Avatar
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    hrm... ok, my secondary main jets are 112, and the primary jet is a 65, float height is 1mm lower, and I'm trying to sort out this gremlin where the bike runs fine at speed, pulls pretty well, but has trouble idling and is a bear to start again when hot. I'm conflicted as to whether it's strictly carburetion or electrical, I have a tiny battery, but ran a voltmeter on it while riding and it never fell below 13, usually ran between 13 and 18 at speed

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    Senior Member JM360's Avatar
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    The pilot jet it idles on is a 35, primary 68, main 100 on my 75
    thats what it had in it, and i checked thats the correct factory jetting for it. I took the muffler off just using it as a trail hill climb bike. So i wanted to go up 10 percent on both the main and primary. Finding main jet 110 was easy. have not found a bigger primary. Not worried about it going lean the engine has to be at its heavy load after it hits the main jet rpm speed. Are you sure the very tiny pilot jet holes are clean. the idle mixture screws adjusted right. Seems like 18 volts would boil a 12 volt battery.
    Weak as wet toilet paper.

    1967-CL77, 1975-CL360, 2011-DR650SE

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    Senior Member crazypj's Avatar
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    Float 1mm lower or higher?
    You want float higher and fuel level lower.
    You will need air correctors or it will run rich mid range
    Mine runs pretty good although it does sometimes take two kicks when hot (video in my 'Too many projects?', if you didn't see it already)
    I dabble in rocket science, when I\'m not picking my nose
    The other night I gave my girlfriend an orgasm, but, she spat it back at me

    'you can take my word for it or argue until you find out I'm right'

  11. #10
    Senior Member JM360's Avatar
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    [quote]Originally posted by JM360

    The pilot jet it idles on is a 35, primary 68, main 100 on my 75
    thats what it had in it, and i checked thats the correct factory jetting for it. I took the muffler off just using it as a trail hill climb bike. So i wanted to go up 10 percent on both the main and primary. Finding main jet 110 was easy. have not found a bigger primary. Not worried about it going lean the engine has to be at its heavy load after it hits the main jet rpm speed. Are you sure the very tiny pilot jet holes are clean. the idle mixture screws adjusted right. Seems like 18 volts would boil a 12 volt battery.
    Would think the voltage should be regulated to 14 volts.
    Weak as wet toilet paper.

    1967-CL77, 1975-CL360, 2011-DR650SE

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