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Project; Turbo GSXR Slingshot

Discussion in 'Biker's Cafe' started by Danm54, May 13, 2011.

  1. Danm54

    Wise Guy

    Joined: May 20, 2009

    Posts: 1,751

    Thats a serious piece of kit. Its crazy how much power can be had out of a relatively small cc NA engine.
     
  2. Danm54

    Wise Guy

    Joined: May 20, 2009

    Posts: 1,751

    Bit busy but got the cams in and valve clearances checked and the cams dialed in.

    Plenty of loctite 270 on the sprocket bolts this time!

    Put everythin else back on and its running again.
    Will book some dyno time tomorrow.
     
  3. Danm54

    Wise Guy

    Joined: May 20, 2009

    Posts: 1,751

    So not got round to booking the dyno, lack of spare cash is the problem!


    I have done about 20 miles on it over a couple runs out, revs hang at about 3k rpm so pulled the data off the logger and it was running lean, upped the fuel in that area and tried again and it still does it but a little higher rpm.

    Got back and plugged the laptop in and its reading about 8.5 lambda when its hanging now.


    Still does the same running closed loop with corrections so I'm guessing it must be butterfly or air bypass related.


    Coolant temps are good though, actually have to wait for it to warm up now rather than needing to get moving quick to keep it cool so I'm happy with that.


    The swing arm is currently the catch can for the breather and there was a fair bit of oil in it, the clutch cover breather doesn't have a lot of height on it now so I put a baffle over the opening to see it it helps.

    Only a couple of spots came out after my runs out so I'll see how it fairs on the dyno.


    Don't think there's much I can do now without an expert and a dyno so it's back waiting again.
     
  4. godinman

    Sgarrista

    Joined: Feb 26, 2007

    Posts: 7,803

    Glad it's going well, looking forward to the dyno day!
     
  5. eddie101

    Wise Guy

    Joined: Apr 15, 2007

    Posts: 1,226

    Location: Staffs

    6 years and the end is in sight! Keep the updates coming; and more importantly, the photos!
     
  6. Danm54

    Wise Guy

    Joined: May 20, 2009

    Posts: 1,751

    Taken its time but its getting there, its all work at the minute but I'm hoping for an easy week soon.

    Just impulse bought a gas gas trials bike though. Been keeping an eye out for a year or so and this came up, same town as me and the right price but its killed some spare cash for the dyno!
     
  7. Danm54

    Wise Guy

    Joined: May 20, 2009

    Posts: 1,751

    Dyno day booked! Hopefully all goes well and I can get a vid this time.
     
  8. MowyTone

    Mobster

    Joined: May 4, 2009

    Posts: 3,366

    Location: Southampton

    :D
     
  9. Danm54

    Wise Guy

    Joined: May 20, 2009

    Posts: 1,751

    Today was dyno day!

    [​IMG]

    Good few hours really with good progress.
    Nothing really fell off and its running much better.
    Dan sorted its hanging at 3k rpm on closed throttle with some throttle adjustments and fuel map changes and it sounds better on idle for it too.

    Peak power was 194bhp which is about the same as last time but its a much smoother delivery now and its jerking and spluttering has stopped.
    Seems a little low but there's injection and ignition timing to play with so that will probably come up with more dyno time.

    The cush hub has started touching the swing arm though so I need to look into that and see whats going on, it was close before so something has moved.

    Got a vid to upload but its very muffled with wind noise.
     
  10. Danm54

    Wise Guy

    Joined: May 20, 2009

    Posts: 1,751

    Its pretty loud in there so its muffled once it gets going, at least it sounds it on my phone.

     
  11. .one.

    Mobster

    Joined: Aug 1, 2006

    Posts: 3,645

    Lovely.
     
  12. MowyTone

    Mobster

    Joined: May 4, 2009

    Posts: 3,366

    Location: Southampton

    Enjoyed that vid. Bet it must be a great feeling to see it getting so close now
     
  13. Danm54

    Wise Guy

    Joined: May 20, 2009

    Posts: 1,751

    Yesterday was a massive step forward in getting it rideable, the cush hub breaking is just another one of those issues that come with a build like this.

    The run in the vid scared the life out of me, didn't realise the quickshifter was so violent!
     
  14. Danm54

    Wise Guy

    Joined: May 20, 2009

    Posts: 1,751

    Few more alterations before its MOT in the morning, moved the oil cooler now the headers are slimmer.

    [​IMG]

    Also fitted a temporary expansion tank now the oil cooler isn't under the seat. Will make up a smaller one soon and also a catch can for the breathers.

    [​IMG]

    Got a meet this weekend so will hopefully get some road miles on it.
     
  15. IC3

    Sgarrista

    Joined: Dec 3, 2011

    Posts: 9,229

    Nice, last time I checked this thread the bike was in pieces. Them shooting flames :cool::D
     
  16. Danm54

    Wise Guy

    Joined: May 20, 2009

    Posts: 1,751

    Passed its mot earlier, taxed it after and took some main roads back.

    Runs much nicer than before and its much smoother at slower speeds, fairly smooth once the boost kicks in and pretty quick as well!
     
  17. IC3

    Sgarrista

    Joined: Dec 3, 2011

    Posts: 9,229

    Are you going to build some kind of shielding or use heat wrap for the exhaust pipes?
     
  18. Danm54

    Wise Guy

    Joined: May 20, 2009

    Posts: 1,751

    The final bit by my leg has a stainless shield but I may wrap it if it gets too hot, its not that bad though.
     
  19. IC3

    Sgarrista

    Joined: Dec 3, 2011

    Posts: 9,229

    I'm really sensitive when I see exposed exhaust now, trauma much lol. Next bike will have an undertail exhaust or I'll get all the shields I can for it.
     
  20. Danm54

    Wise Guy

    Joined: May 20, 2009

    Posts: 1,751

    Understandable after your little mishap!

    The up pipe sticks out further than the fairing so I may make a cover for it when the fairing lowers go on to tidy it up.

    Certainly wouldn't want my leg under that with a bike on top of it....