Page 2 of 2 FirstFirst 12
Results 16 to 23 of 23

Thread: Turbo WR450 Motard

  1. #16
    Join Date
    5th February 2008 - 13:07
    Bike
    2006 Hyosung GT650R
    Location
    BOP
    Posts
    7,141
    Quote Originally Posted by .produKt View Post
    Will be PROBABLY ok for a 750cc or larger bike.

    Steve
    "I am a licenced motorcycle instructor, I agree with dangerousbastard, no point in repeating what he said."
    "read what Steve says. He's right."
    "What Steve said pretty much summed it up."
    "I did axactly as you said and it worked...!!"
    "Wow, Great advise there DB."
    WTB: Hyosung bikes or going or not.

  2. #17
    Join Date
    12th September 2006 - 13:24
    Bike
    KTM 950adv + 450exc
    Location
    Auckland
    Posts
    70
    This one could be a good base to start from,
    http://www.trademe.co.nz/Trade-Me-Mo...-279340193.htm

  3. #18
    Join Date
    22nd January 2006 - 15:50
    Bike
    Honda CBR250RR, Sach's MADASS 125
    Location
    Christchurch
    Posts
    333
    Blog Entries
    3
    So the idea is to turbocharger a Medium single banger?

    Aren't the exhaust pulses too far apart to properly spool the turbo?
    Last edited by .produKt; 25th March 2010 at 23:19. Reason: typo
    "Speed has never killed anyone!.... Suddenly becoming stationary, That's what gets you" - Jeremy Clarkson, Season 3 Topgear

  4. #19
    Join Date
    5th February 2008 - 13:07
    Bike
    2006 Hyosung GT650R
    Location
    BOP
    Posts
    7,141
    Quote Originally Posted by .produKt View Post
    Aren't the exhaust pulses too far apart to properly spool the turbo?
    Just use a smaller turbo and bigger intake plenum.


    Steve
    "I am a licenced motorcycle instructor, I agree with dangerousbastard, no point in repeating what he said."
    "read what Steve says. He's right."
    "What Steve said pretty much summed it up."
    "I did axactly as you said and it worked...!!"
    "Wow, Great advise there DB."
    WTB: Hyosung bikes or going or not.

  5. #20
    Join Date
    19th October 2005 - 20:32
    Bike
    M109R, GS1200ss, RMX450Z, ZX-12R
    Location
    Near a river
    Posts
    4,308
    This was done through RS performance in England

    Supercharged putting over 85hp at the wheel
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	xtz660-supercharg.jpg 
Views:	33 
Size:	30.6 KB 
ID:	201790  

  6. #21
    Join Date
    12th September 2006 - 13:24
    Bike
    KTM 950adv + 450exc
    Location
    Auckland
    Posts
    70
    Sounds like a real cool project.
    Just thinking out loud here,

    How would you setup the carb on a blow through system?
    you'd need to seal and pressurise the float bowl to get the venturi effect through the carb.
    In which case you'd run out of fuel quick as the float bowl is gravity feed, so you'd need to add a small pump in.
    most carb pumps only do a few psi.

    You'd need a real small turbo like a gt12,
    Am I alone in thinking that turbo lag power delivery would be contrary to what makes a motard fun, being sharp and nimble.

    What about a suck through supercharger setup?
    with the supercharger wedged between the carb and the head.
    Jetting would be simplified, and throttle response would be retained.
    something like a AMR300 would do the trick (on some small subaru's and off the shelf)
    Or may turn a smog pump into a poor mans supercharger.
    Does a WR450 run a dry stator and flywheel?
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Charger_01..jpg 
Views:	14 
Size:	17.3 KB 
ID:	202185   Click image for larger version. 

Name:	Aisin 300..JPG 
Views:	16 
Size:	80.0 KB 
ID:	202186  

  7. #22
    Join Date
    5th February 2008 - 13:07
    Bike
    2006 Hyosung GT650R
    Location
    BOP
    Posts
    7,141
    Quote Originally Posted by stig View Post
    you'd need to seal and pressurise the float bowl to get the venturi effect through the carb. In which case you'd run out of fuel quick as the float bowl is gravity feed, so you'd need to add a small pump in. most carb pumps only do a few psi.
    You feed plenum pressure to above the diaphragm, and into the float bowl, and then you need a fuel pressure regulator to keep the bowl fed with plenum pressure plus a few psi. Than you need a higher pressure fuel pump to feed the pressure regulator.


    Quote Originally Posted by stig View Post
    What about a suck through supercharger setup? with the supercharger wedged between the carb and the head. Jetting would be simplified, and throttle response would be retained.
    Draw through turbo designs are usually the laggiest. Theres no real reason to draw through, unless you like the way they behave - cranky and bitchy.


    Quote Originally Posted by stig View Post
    Or may turn a smog pump into a poor mans supercharger.
    Now that's an interesting idea.


    Quote Originally Posted by stig View Post
    Does a WR450 run a dry stator and flywheel?
    Even if it's wet, its not bathed in oil while its running. Maybe an oil slinger and seal will allow you to a shaft out of it.


    Steve
    "I am a licenced motorcycle instructor, I agree with dangerousbastard, no point in repeating what he said."
    "read what Steve says. He's right."
    "What Steve said pretty much summed it up."
    "I did axactly as you said and it worked...!!"
    "Wow, Great advise there DB."
    WTB: Hyosung bikes or going or not.

  8. #23
    Join Date
    12th September 2006 - 13:24
    Bike
    KTM 950adv + 450exc
    Location
    Auckland
    Posts
    70
    Quote Originally Posted by DangerousBastard View Post
    You feed plenum pressure to above the diaphragm, and into the float bowl, and then you need a fuel pressure regulator to keep the bowl fed with plenum pressure plus a few psi. Than you need a higher pressure fuel pump to feed the pressure regulator.
    a system with an FPR and return lines and all that goes with it would be pretty involved. What psi would overcome the floats ability to hold the needle valve shut?


    Quote Originally Posted by DangerousBastard View Post
    Draw through turbo designs are usually the laggiest.
    There could be many reasons for lag on draw through turbo systems dependant on the setup, long lengths of intake pipework delaying response, fuel condensing on an intercooler if one was used. But there is no lag on a blower setup so no problem.

    Quote Originally Posted by DangerousBastard View Post
    Theres no real reason to draw through, unless you like the way they behave - cranky and bitchy.
    Draw through on a blower setup is the most common. A carb is designed to work at n/a pressures.


    Quote Originally Posted by DangerousBastard View Post
    Even if it's wet, its not bathed in oil while its running. Maybe an oil slinger and seal will allow you to a shaft out of it.
    It would be easier if it was dry, extending the shaft might require an extra bearing for support and that could be hard with only a thin walled case cover. It would add extra width to the engine right by your left leg as well.

    Have you found a bike to work from Spanner?

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •