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  1. #1
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    PPM one piece N54 billet crank hub

    Not as much crank hub talk in the N54 world for obvious reasons but still good to know there are one piece billet options out there:

    PPM Racing Australia is proud to introduce our BMW 335i N54 One piece Billet 4140 Crank Hub

    Click here to enlarge

    They are asking $399 for it.

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    That's a solid looking piece of hardware. 4140 steel is suitable for rifle barrels, so it should be up to the task. Is there a friction washer or anything special locking the hub to the crank?

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    Click here to enlarge Originally Posted by RocketSurgeon Click here to enlarge
    Is there a friction washer or anything special locking the hub to the crank?
    Unfortunately that is all the info they provided.

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    2 out of 2 members liked this post. Yes Reputation No
    ABR houston should be releasing one of these hubs too, 1st quarter of 2018 ��.

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    Click here to enlarge Originally Posted by Basinillero Click here to enlarge
    ABR houston should be releasing one of these hubs too, 1st quarter of 2018 ��.
    Nice tip! Didn't know he had one in development @alex@ABRhouston

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    Yup. This still doesn't fix the issue.
    Should be soon. We'll be selling Maximum PSI's hub assembly. It was the same idea, they beat us to the punch.
    We are big fans of Mike and his team, and will be offering this on our engine builds for N54/N55/S55 as well. Price for the components will be 1299, installation TBD depending on if it's going into an engine build, or a previously built engine, or an installed engine/in-car.
    Click here to enlarge
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  7. #7
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    Click here to enlarge Originally Posted by alex@ABRhouston Click here to enlarge
    Yup. This still doesn't fix the issue.
    Should be soon. We'll be selling Maximum PSI's hub assembly. It was the same idea, they beat us to the punch.
    We are big fans of Mike and his team, and will be offering this on our engine builds for N54/N55/S55 as well. Price for the components will be 1299, installation TBD depending on if it's going into an engine build, or a previously built engine, or an installed engine/in-car.
    What's the difference between this hub and the Maximum PSI hub?

    So this one doesn't fix it but the Maximum PSI design does?

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    It appears the Maximum PSI hub has dowel pins on the hub, and the front of the crank needs to be drilled (at least the s55 version). That way the timing sprocket is locked to the hub, and the hub is locked to the crank. Nobody is sure exactly what slips, whether the bolt loosens first, or the hub slips and loosens the bolt. I just recently saw an early n54 that spun the hub while the bolt stayed TIGHT. The Maximum PSI hub should eliminate the possibility of the hub slipping, provided the bolt doesn't loosen.

    The PPM hub prevents the sprocket from slipping, but the hub could still slip against the crank. The Maximum PSI hub prevents this possibility, but requires drilling the crank. The possibility of the crank bolt coming loose (like an m54 oil pump bolt) still exists, unless you also use the VTT crank bolt capture.

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    Click here to enlarge Originally Posted by RocketSurgeon Click here to enlarge
    The Maximum PSI hub prevents this possibility, but requires drilling the crank.
    So the Gintani S55 design? https://www.bimmerboost.com/content....ank-hub-design

    Click here to enlarge Originally Posted by RocketSurgeon Click here to enlarge
    unless you also use the VTT crank bolt capture.
    I was going to leave this alone but VTT/Tony ripped that crank bolt capture design off a BimmerBoost member and didn't compensate him. If you guys want, I'll provide all the proof and details.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    So the Gintani S55 design? https://www.bimmerboost.com/content....ank-hub-design


    I was going to leave this alone but VTT/Tony ripped that crank bolt capture design off a BimmerBoost member and didn't compensate him. If you guys want, I'll provide all the proof and details.
    I figure Maximum PSI is using their S55 design for the N54 too. https://www.bimmerboost.com/showthre...-S55-crank-hub

    I saw the original crank bolt capture design quite a while back, very clever. When the Vargas product hit the market, I knew where he got the idea. I had hoped the original inventer was getting a cut, the pricing certainly leaves plenty of room for that...

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    Click here to enlarge Originally Posted by RocketSurgeon Click here to enlarge
    I had hoped the original inventer was getting a cut, the pricing certainly leaves plenty of room for that...
    Nope, he $#@!ed him. Because that is who he is.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge

    I didn't see Gintani made that second revision. I need to investigate them more. I'm not a machinst that runs a gear hobber, but it seems that the angle of the teeth on that seems very aggressive.


    Regardless, the front of the crank is ridiculously tough from nitrating, which will be difficult to cut easily.
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  13. #13
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    Click here to enlarge Originally Posted by alex@ABRhouston Click here to enlarge
    Regardless, the front of the crank is ridiculously tough from nitrating, which will be difficult to cut easily.
    Yep but what other option do you have? You have to cut it in order to 'solve' this.

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