Thread: ZX1400 CFM

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    ZX1400 CFM
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    Senior Member NFG's Avatar
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    Hey Guys,

    Can anyone tell me what the CFM (cubic feet per minute) is for a zx1400?

    The only info i can seem to find is that the stock paper filter is 164.7 CFM.
    The reason i need to know this is i want to make sure i buy the right donaldson air cleaner for my buggy as i'm not happy with the setup i'm using at the moment.

    cheers.
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    Re: ZX1400 CFM
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    Keeper of the Asylum K-fab's Avatar
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    (1400 cc x 11K rpm)/2 (since each cylinder only drinks every other revolution) = 7.7 million cc = 7,700 liters
    7.7k liters (punch into converter on iPhone) = 271.9229338 CFM

    quick disclaimer - I may be VERY WRONG!!! LOL - it's about double what you're finding so maybe I've missed a divide by two somewhere.

    Donaldson setup eh? Gee, where'd you get that idea?

    https://shop.donaldson.com/store/en-...25&catNav=true
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    Re: ZX1400 CFM
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    Senior Member NFG's Avatar
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    Thanks mate!

    I didnít know how to calculate it correctly.

    As for the Donaldson air cleaner not quite sure where I seen or heard about it...😜😁
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    Re: ZX1400 CFM
    #4
    Keeper of the Asylum K-fab's Avatar
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    You did see the "I MAY BE VERY WRONG", didn't ya. (:
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    Re: ZX1400 CFM
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    I think that math would be assuming 100% volumetric efficiency, so the real number is likely less than that. How much less, I couldn't tell you though
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    Re: ZX1400 CFM
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    The Wizard bdkw1's Avatar
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    While the actual numbers may be technically lower, they are based on zero restriction. Since you are going to have restriction in the filter, it's better to shoot high. Be aware that all flow ratings are not equal. You need to look at how many inches of water the rating is at. Most Donaldson filters have a "saftey" secondary filter than can be removed for more flow.
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    Re: ZX1400 CFM
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    Intense Moderator Rat4020's Avatar
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    air flow rate=cid x rpm x 0.5 x Ev
    ________________
    1728

    example small block ford 302 cid,rpm= 5500, and Ev =85%

    Air flow rate = 302 x 5500 x 0.5 x 0.85 =408 cfm
    1728
    The question is not if its gona roll. Its when ..

    That be some kind of church cruzzer or commuter bike thingy ?
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    Re: ZX1400 CFM
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    Keeper of the Asylum K-fab's Avatar
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    See! I told you I was wrong. I went for simple, straight forward "It can move this much air".
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    Re: ZX1400 CFM
    #9
    Intense Moderator Rat4020's Avatar
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    When I made up my turbo system for the Taz I ordered three books on turbo systems . The best one being Maximum Boost by Corky Bell ,it covers about every thing a novice need to learn to spend money...I was surprised that my 1000 Apex motor at 10300 rpm's has about the same flow of a 302 ford
    The question is not if its gona roll. Its when ..

    That be some kind of church cruzzer or commuter bike thingy ?
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    Re: ZX1400 CFM
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    Senior Member NFG's Avatar
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    I have gone high hopefully it is sufficient enough tho 🤞

    Cheers for the info everyone.

    I will keep you posted on the result.
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