900ss Rebuild/refresh

Discussion in 'Supersport (1974-2007)' started by Roadtrip, Jul 3, 2022.

  1. My last couple of parts arrived today, ordered new starter from electrex world they sale on eBay for £132,50 including post I brought direct from them and with post is still the same price, but with eBay you get more protection should the item not turn up etc, the company service was very good delivered in 18 hours.

    Next up is deliver all parts for reassemble :)

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  2. Picked up my engine from Glen at Moto v, All new engine/belt bearings, valve seals etc, new starter motor, I have a nice open clutch cover to fit.
    Next job is get forks and shock serviced.
    A thank you to @gaz92 for the engine stand makes life much easier to move/store.

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    #162 Roadtrip, Jan 24, 2026
    Last edited: Jan 24, 2026
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  3. A little bit more progress.
    As my fork tubes have to much pitting I got a pair from @Nasher :upyeah: in great condition with non adjustable lowers and needed to swap them over to my adjustable lowers, so popped over to a mate who has done this before.

    One fork had just under 200mm the other 350mm :eek:

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    Interesting on the fork springs, which is original if any of them as I can't find any markings or numbers on them.

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  4. The top one looks like the standard spring I took out of my ‘96 SS, it should measure 340mm if that’s any help to you.
    Ian.
     
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  5. Thanks Gillan
    Im just swotting up on spring rates, which is another mine field :D
     
  6. Folk oil too! ;)
     
  7. Agree I’m not sure what colour oil to put in there :D
     
  8. I think KTech do a fork overhaul kit.
     
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  9. If you are clear on the main use you need the bike to work for (road or track) these Showa forks should be relatively easy to get into the zone with spring rate, fixed preload, oil visc and qty to the point where fork height in the yokes, preload adjust and clicker settings can do the fine tuning. My experience- don’t go a long way away from the standard oil viscosity range (the true visc in the specs, not the number on the front of the bottle- that’s often a marketing fib!) as the shim stacks in these are quite limited, and, “YMMV” but I really don’t understand why anyone uses variable rate springs in these (and then add preload to fix the sag, which just closes up the low rate section of the spring anyway:thinkingface:)
     
  10. Did a bit of searching and found these kits from Ktech and Brookes and cartridges which are probably great to have but they do have a price tag to go with it.
     

  11. I called around to find Linear springs but no one makes them of the SS, 888,851 which seem to all use the same size springs but you can for 1998-2002 model.

    Progressive springs I ended up getting from YSS they recommend 10w but Brookes said 5w which is what I got, mine is just for road riding. I came across your thread about your forks with the cartridges fitted bet they are great to ride.


    Next job is rebuild very soon then the shock but my local-ish place FTR has moved to ELY Cambridge don't really want to post but might have to.
    A few part numbers which might help someone in the future.

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  12. Are you sure, “'Cause if my eyes don't deceive me
    There's something going wrong around here”
    (5 bonus points for getting the singer, the song, the year and the album without googling ;))
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    no worry what’s really in the box anyway (so long as the main spring rate is ballpark), lots of people on here have said they are happy with rising or dual rate, I just found they don’t do what I need a fork spring to do, (which, ironically, is be progressive :)).
     
  13. I did question them over that right spring and numbers even states Honda on the side of the box :D
    Bugging me know who's the singer etc.

    It could have been Doggys thread about cartridges ?
     
  14. Yes, it wasn’t mine though I may have commented on it. I didn’t go down the cartridge route as I got to a good tuneable track set-up with more-or-less the standard oil flow control set-up.
     
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