Big piston fork oil? quantity.

Discussion in 'Maintenance' started by PeterT, Oct 10, 2013.

  1. sinewave

    sinewave God Like

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    You're correct Peter, just checked again and I was looking a few pages back which is for forks 08-11 which is 93mm

    84mm is just for the Showa BPF on MY12 onward models.
     
  2. PeterT

    PeterT Active Member

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  3. sinewave

    sinewave God Like

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    It was 22:10 when I initially looked and posted!

    Probably a bit pissed on Red wine by then so that's my excuse!

    [​IMG]
     
  4. PeterT

    PeterT Active Member

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    No worries mate. At least you bothered to post.
     
  5. Argus700

    Argus700 Active Member

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    Hi Pete, I have changed my Showa BPF seals (2014 Fireblade) and can see that the fork oil capacity is 515 plus or minus 2.5cm with an air gap of 84mm.

    Any idea what fork components are installed when measuring the 84mm?
     
  6. icedmind

    icedmind Active Member

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    A
    all fork component installed with upper shifted to minimum travel (dust seal touching base of sanction)
     
  7. Muffking

    Muffking God Like

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    So we're saying 84mm air gap and 10W oil, but at what stage of building it back up is the air gap measured as this video shows it with the spring out and the fork in the compressed position?

    n.b. start at 7:47
     
  8. icedmind

    icedmind Active Member

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    that's for cartage forks not BPF; BPF have spring on bottom and damper on top, the other way around from cartage, see my other post for overview.

    Just confirmed from Honda service manual which is with everything in for BPF; last step before tighten fork caps.
    [​IMG]

    Edit: just to clarify this to my step by step guide i wrote up, as the oil is sat inside the collar with thread that you need to torque down, not on the top where you put the fork tool, it will make no difference to if you torque down after you check oil height or not as long as the collar is tight sitting into the thread and all air underneath is purged out. (this and at my current rented house i don't have access to a vice is the reason why the tightening order is different on my step to step guide)
     
    #28 icedmind, Jul 16, 2020
    Last edited: Jul 16, 2020
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