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Project Grasshoppers Triumph Sprint ST 955i

Discussion in 'Other Projects - Other Bikes (non 250's)' started by Grasshopper, Sep 14, 2014.

  1. Grasshopper

    Grasshopper Well-Known Member Dirty Wheel Club

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    I've got another spare head here which came out of a working motor - so in it goes:
    HGR7.jpeg

    Need to set the cams & chain up properly so will report back later in the week....
     
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  2. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Alot easier replacing hoses than heads

    :fuckyou:
     
  3. Grasshopper

    Grasshopper Well-Known Member Dirty Wheel Club

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    Hmmm... the scary part is that you and @Linkin might be right :oops:. I did have red coolant leaking from the front of the head gasket though. I have read that that red coolant can cause corrosion in head gaskets on engines which are not all alloy (such as the triple engine). Anyway, after this job, I can do anything! :drinks:
     
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  4. Grasshopper

    Grasshopper Well-Known Member Dirty Wheel Club

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    Well, waiting on a couple of shims for this head, should have them Monday. Replaced all the rubbers on the idle control air hoses. Hoses were still very good, but the end bits of hoses where all kaput. I blew into one of the hoses, and what do you know, it made lovely whistling sound, very much like the noise I was hearing before :mad::headbang:. Anyway, hoping all will be running on Monday....

    TRHose1.jpeg
     
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  5. Grasshopper

    Grasshopper Well-Known Member Dirty Wheel Club

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    Replaced head, head gasket, did complete valve clearances with revised shims, and fixed air leaks (as shown above) - verdict? IT LIVES!!

     
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  6. Grasshopper

    Grasshopper Well-Known Member Dirty Wheel Club

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    And now, it feels like a new bike... never gone so good, it flies like the wind, and no niggly grumbles below 3,000 rpm - just smooth power all the way!!! Yee Haa :minigun:. You can hear how the idle is consistent and smooth - never did that before!
     
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  7. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    @Grasshopper 's bike is currently with me in Sydney, at my work.

    It's getting some much needed love. It's in a bit of a sad state at the moment, mechanically and cosmetically. Only worrying about the mechanical stuff for the time being. At least it has a front guard on it at the moment :)

    Today I changed both old and worn out pilot road 4's (insert salute here, very good tyres at the time) for some nice new Bridgestone Battleax BT-023 Sport Touring tyres. The road 4's were good, but the Bridgestones are a stiffer construction and should suit the bike's weight a bit better. The latest Road 5/6 tyres have GT versions with a stiffer construction for the heavier touring bikes (think ZX-14R, K1600 etc), however they are also outrageously expensive. The Bridgestones were far cheaper at $400 for the set.

    Also did front wheel bearings and seals, along with removing the tank, airbox and cam cover. Fuel tank is a bit niggly to remove, and without two fuel line clamps, the tank will empty its contents onto the floor, so recommend draining it fully if you can't clamp the lines. Airbox is a simple affair with two T30 torx screws on a bracket holding it to the throttlebodies, and two air hoses. The airbox boots themselves are spring loaded so no clamps to worry about, they just pop off. DNA air filter that was already fitted is in good condition and not in need of cleaning.

    Directly under that is the cam cover and coils, clearly visible and accessible with no junk (secondary air system, wiring harness, or other bits and bobs) blocking access, unlike modern bikes. The thought of doing clearances etc on a modern CBR1000RR makes me scrunch up my face, due to the amount of stuff blocking access to the important bits. The cam cover and cams themselves on those are a bitch to remove and refit.

    Spark plugs are DPR8EA-9. Left to right, #1 was a little leaner than #2, and #3 was a little richer than #2. I don't have three DPR8EA-9's in the workshop, and only two DPR7EA-9's, but I do have three DPR9EA-9's which is what will be going in.

    The sprint currently sounds like the cam chain tensioner has given up the ghost, but I will check the previous mechanics' work and report back tomorrow :D Also doing complete fork overhaul (bushings, oil seals, dust seals, circlips, washers and o-rings) and fresh steering head bearings. Front pads are shot from fork oil contamination so I'll need to get some nice fresh Goldfren S3's on order.

    Pictures will follow tomorrow.
     
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  8. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Oh, forgot to mention.

    Lovely rusty water/coolant mix when I drained it, tsk tsk - topped up with water! :minigun:

    Oil filter is a HF191 which we don't have stock of, so off to the Triumph stealership tomorrow for a new one.

    Current oil of choice at work is Motorex 20w50 full synthetic, in a 200L drum of course.
     
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  9. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    On the workbench

    [​IMG]


    Yummy

    [​IMG]

    [​IMG]




    Forks done

    [​IMG]


    Old tyres were cooked

    [​IMG]

    [​IMG]



    Tyres and wheel bearings done

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
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  10. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Looks like one of those bikes u buy and think "wtf was the PO thinking?"

    :lolsign:

    are u running short of cleaning rags?

    :lolsign:
     
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  11. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Never seen any bike ever apart from this one that has a standard type sealed bearing in a steering head. Really strange.

    [​IMG]


    Bottom race was notchy

    [​IMG]

    [​IMG]


    Front end back together

    [​IMG]


    Checking clearances and timing - no adjustments needed and she's timed correctly.

    [​IMG]


    Something's missing... also who uses a clip link on a 530 chain... some odd previous previous owner/mechanic shenanigans here

    [​IMG]

    [​IMG]


    Got it all assembled and running with new oil, coolant and brake fluid. Cam chain tensioner is shagged even after extending it manually, so it needs a new one. She needs a throttle balance which is on the list for tomorrow. Annoying job as on these, the idle air control valve controls the idle, it has to be disconnected for the throttle balance, but it won't run without the IACV maintaining the idle speed. So I will have to shim the throttle stop to 1200rpm while doing the balance.
     
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  12. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    I updated the map back in the day but I dont think we balanced the throttle bodies

    The FZR on Steroids Bike

    Ive done balancing on the Daytona and the Tiger with TuneECU and never disconnected anything


    (And answer your text messages :aggressive::D )
     
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  13. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Will do.

    The sprint is an older generation, it can't be balanced through the computer. I've got the service manual from ManualsLib on the work laptop so I have the proper procedure handy.

    We have a you beaut diagnostic computer and cables that costs about 5 grand a year on subscription. All I'm able to do is mess with the idle fuel trims, stepper motor and throttle closed percentages which is all in the idle air control valve and injector modulation. Plus reset all settings. Don't have subscription to the mapping part of the software.

    I'll have to download TuneECU.
     
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  14. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    All balanced up.





    Did the typical Triumph tune reset dance, battery out for a few hours, back in, reset parameters and let it run up without opening throttle. Adjusted idle speed back down, but it's still inconsistent.

    Inlet manifolds have had the silastic treatment so new ones will be needed long term.

    Reset all the suspension settings which were way off on the back. Front is preload only, 3 rings visible on the adjusters. Rear shock had no preload in it so set that up. It has a remote adjuster like my MT09SP did, no mucking about with collars and shock spanners. Had no rebound damping set so it was like a pogo stick, the standard setting didn't make any difference, I had to wind the rebound adjuster in closed then back it off half a turn to get some acceptable level of damping on it. Shock will need overhaul or replacement in the future.

    But she runs well enough while moving, has fresh steering, tyres, bearings, forks, a clean and well adjusted chain, and valid rego.

    Going to ride it around to/from work while I drop my italian car (mama mia!) at the car mechanic for some work :prankster:
     
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  15. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    @Linkin How is the bike running in the real world?

    Replaced those rear blinkers yet? :D
     
  16. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Not yet :)

    Car is going to the mechanic today so I'll be on the bike until it's ready
     
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