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Thread: 851/888 racebike basketcase

  1. #131
    Join Date
    Jan 2015
    Location
    Chicago
    Posts
    322

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    Picked up the motor and forks today. Started the assembly this evening, but can't find the front axle. No axle>>no forks>>no front wheel>>no rear wheel, but still made some progress.











    Thought about going with the period Ohlins 9050 forks, but their performance just isn't that good. Suspension technology has advanced a lot in the last 25 years.

    So I stuck with the Showa shells, but with a custom 4-piston 25mm cartridge setup from GP Suspension (which should now be available to others who have these forks). Built by Superbike Suspension in Naperville, Illinois.






    '01 996R, '94 888 SPO Ltd, '88 851 Adamo racebike, '91 ZX-7R K1 homologation, '89 NSR250 MC18r5k, '01 Derbi GPR50/75, '71 CB450/500 café.

  2. #132
    Join Date
    Aug 2008
    Location
    Glos,England
    Posts
    407

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    Find that axle, those forks with the kit in looking good, along with those tripple clamps.

    keep pictures coming, what do you think your run the trees at 27.


    nick
    Surfking

  3. #133
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    Jan 2015
    Location
    Chicago
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    322

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    Quote Originally Posted by surfking View Post
    keep pictures coming, what do you think your run the trees at 27.
    Thanks.

    Yes, I've started at 27mm offset. Will adjust from there, if necessary.
    '01 996R, '94 888 SPO Ltd, '88 851 Adamo racebike, '91 ZX-7R K1 homologation, '89 NSR250 MC18r5k, '01 Derbi GPR50/75, '71 CB450/500 café.

  4. #134
    Join Date
    Jan 2015
    Location
    Chicago
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    322

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    Axle arrived and I did a little more after work today.













    '01 996R, '94 888 SPO Ltd, '88 851 Adamo racebike, '91 ZX-7R K1 homologation, '89 NSR250 MC18r5k, '01 Derbi GPR50/75, '71 CB450/500 café.

  5. #135
    Join Date
    Jan 2015
    Location
    Chicago
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    322

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    Until I can repair and modify the original, I found this New Old Stock aluminum tank. Now to gather all the internals and wire it to the ST4S harness. I plan to use the stock single injector ST4S throttle bodies, but upgrade the injectors to handle the extra.

    Couple questions:
    1. What pressure do the original pumps use?
    2. Is there a recommended, high-quality aftermarket pump?
    3. I'm assuming the connectors won't match the ST4S harness, but it shouldn't be too terrible a job, should it?
    4. Is there a block-off cap available for the fuel sender?













    '01 996R, '94 888 SPO Ltd, '88 851 Adamo racebike, '91 ZX-7R K1 homologation, '89 NSR250 MC18r5k, '01 Derbi GPR50/75, '71 CB450/500 café.

  6. #136
    Join Date
    Mar 2009
    Location
    France
    Posts
    329

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    1. Maximum fuel pump pressure on 851 and 888 is 5 bars as all injection model.
    The regulator is tared to 3 bars

    2. There are some aftermarket pumps. I don't know what is the best.
    Here you can find a kit with the special holder, and filters
    http://www.euromotoelectrics.com/BOS...576kitplus.htm

    Fortunately, I had found all original parts, but you have to be patient if you want them and they cost money... (if it wasn't for a Racing, I would have taken the easy way above)

    3. I made the contrary, adapted the connector of the an SP3 loom to the 888 fuel tank sender, without problem. You just have to find an "AMP Tyco" waterproof automative typ seal (easy).

    4. you can use a more recent sender, it's the same thread.

  7. #137
    Join Date
    Jun 2007
    Location
    Bris Vegas
    Posts
    3,398

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    You can use a standard car fuel pump. Pretty common in Japanese cars. Mazda mx 5, even the Nissan Xtrail. They give 5 bar. Cheap and reliable and lighter. You just have to support it in big hole you have for the above mentioned pump. Usually they have a shrouded male spade connector setup.
    Early model fuel regulators are adjustable the later are not. The early ones have blanking cap, that when removed accesses the spring adjuster. If you only have a late model, the check valve that goes in the big threaded hole in your tank, can be pulled apart and the spring changed there by changing your fuel pressure if you wish.
    Griff
    To infinity and.......

  8. #138
    Join Date
    Jan 2015
    Location
    Chicago
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    322

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    Looks like the plan will be to have the ST4S injectors modified for higher flow and I will probably run a regulator at 3.5 or 4 bar to keep everything happy and not overly stressed.

    New photos.

    Titanium therapy.

    50mm full Termignoni. High mount tubes are a bit dinged up and CF is a bit burnt, but I can take care of all that next winter. Somehow there isn't a mark on any of the front or rear endcaps. I'll add corse-style rear end cap support tabs as well.

    Intake ports look good and are well matched to the manifolds.













    Last edited by nine16; 03-06-2016 at 07:13 AM.
    '01 996R, '94 888 SPO Ltd, '88 851 Adamo racebike, '91 ZX-7R K1 homologation, '89 NSR250 MC18r5k, '01 Derbi GPR50/75, '71 CB450/500 café.

  9. #139
    Join Date
    Jan 2015
    Location
    Chicago
    Posts
    322

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    By the way--anyone know which smaller temp guage fits the 53mm hole? The 996 one I planned on using is 58mm.


    '01 996R, '94 888 SPO Ltd, '88 851 Adamo racebike, '91 ZX-7R K1 homologation, '89 NSR250 MC18r5k, '01 Derbi GPR50/75, '71 CB450/500 café.

  10. #140
    Join Date
    Jan 2015
    Location
    Chicago
    Posts
    322

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    Carbon fiber arrived. I'll have to do a little modification to the bottom mounts because of the 888 style rearsets.

    I'm figuring out tank internals to run a little higher fuel pressure. The ST4S single injectors are getting sent out for machining for higher flow. But then at least it should all be plug-and-play with the Microtec ECU.






    '01 996R, '94 888 SPO Ltd, '88 851 Adamo racebike, '91 ZX-7R K1 homologation, '89 NSR250 MC18r5k, '01 Derbi GPR50/75, '71 CB450/500 café.

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