crankshaft size

Discussion in 'Mazdaspeed 3 General Discussion' started by rmettler001, Oct 11, 2021 at 2:12 AM.

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  1. rmettler001

    rmettler001 Greenie Member

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    fellow speed peoples i was wonder if anyone knows if the crankshaft on the speed is the same size crankshaft as a n/a 2.3L mazda 3 i messed my crank up pretty bad and if i could hit a junkyard or a mazda 3 partout instead of having to buy brand new id much rather do that to save money


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    rmettler001, via a mobile device, Oct 11, 2021 at 2:12 AM
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  2. L337TurboZ

    L337TurboZ Master Technician Silver Member

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    You should buy a new one. You'll have to rebuild the entire thing anyways so you should start off with something new.

    If you tried a used one it could be damaged or not work correctly. You would have to get it machined anyways and if there was an issue with the used part then you're back at square one.

    How did you mess up the crank?
     
    L337TurboZ, via a Motorola device, Oct 11, 2021 at 6:06 AM
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  3. jsilva

    jsilva Silver Member

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    I don’t mean to contradict L337TurboZ, but when I rebuilt my engine buying a new crank wouldn’t have been financially possible. The donor engine I used for the rebuild had rod knock so I reused the crank out of the previous broken engine—I took it to the machine shop for an assessment before using it.

    I’ve seen a couple of used mazdaspeed cranks up for sale in my area. Have you checked FB Marketplace and Craigslist? Just search for ‘mazdaspeed parts’ or something like that.
     
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  4. L337TurboZ

    L337TurboZ Master Technician Silver Member

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    Jsilva is correct. A used crankshaft can be used but it depends on it's condition. A machinist may or may not say it's ok for use.

    I think some people have used a focus crank but I am not 100 percent certain
     
    L337TurboZ, via a Motorola device, Oct 11, 2021 at 12:05 PM
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  5. Easter Bunny

    Easter Bunny Professional Engineer Platinum Member

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    I thought it was the Ecoboost mustang crank which fits and is cheaper.
     
    Easter Bunny, via a mobile device, Oct 11, 2021 at 1:54 PM
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  6. rmettler001

    rmettler001 Greenie Member

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    thanks for your input I appreciate it however I do not know how I broke my crank but I will drop a picture below


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    rmettler001, via a mobile device, Oct 12, 2021 at 1:59 PM
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  7. rmettler001

    rmettler001 Greenie Member

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    Thank you for your input I will look into it


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    rmettler001, via a mobile device, Oct 12, 2021 at 1:59 PM
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  8. rmettler001

    rmettler001 Greenie Member

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    Thank you for the response I appreciate it


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    rmettler001, via a mobile device, Oct 12, 2021 at 2:00 PM
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  9. rmettler001

    rmettler001 Greenie Member

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    i’ve checked Facebook marketplace I’ve checked craigslist I’ve checked local selling thing in Utah I can’t find one for cheap most of them are like $1000 and being a broke teenager $1000is hard[emoji23]


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    rmettler001, via a mobile device, Oct 12, 2021 at 2:01 PM
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  10. L337TurboZ

    L337TurboZ Master Technician Silver Member

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    For a 1000 dollars a crankshaft you could save a grand more to buy a used engine. Search for CX7 engines as they seem to go for a little less than the Speed platform. Aside from the turbocharger itself I am not aware of any differences unless someone here can clarify.
     
    L337TurboZ, via a Motorola device, Oct 12, 2021 at 2:17 PM
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