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Project Risky's FZR250 2KR

Discussion in 'Your 250cc Projects' started by Linkin, Feb 19, 2016.

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  1. Joker

    Joker See "about me" for contact details. Contributing Member

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    Water pump not working or not working properly would be my guess. Especially if you've already done everything else. I assume you're using an anti-boil coolant?
     
    Joker, Feb 28, 2018
    #81
  2. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    You've been watching too much delboy's garage.

     
    Linkin, Feb 28, 2018
    #82
  3. Joker

    Joker See "about me" for contact details. Contributing Member

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    Not sure what your point is mate? Anti boil coolant has a higher boiling point than normal water...? Something like this:

    upload_2018-2-28_18-33-25.png

    And Delboy's smarter than your average backyard Joe...
     
    Joker, Feb 28, 2018
    #83
  4. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Increased boiling point is all well and good, but straight water has the best heat transfer capability. We use glycol in coolant to prevent freezing, not because it doesn't boil. (And actually it burns and is flammable). Glycol also expands with heat more than water does.

    Corrosion inhibitors are added to prevent corrosion, obviously.

    Water boils at 100deg c at sea level and at atmospheric pressure. Pressure on the fzr cooling system is 0.9 bar, which is on top of atmospheric pressure.

    Anti-boil is a moot point, bs marketing wank.

    Risky's bike has bubbles coming from the cap. That is at atmospheric pressure, and it is compression gasses escaping and coolant being sucked in and burnt. Ive been there myself with an fzr. Safe to say the heas gasket has gone.

    As for delboy on youtube he is a proven corporate shill flogging stuff that doesnt work, and nowhere as smart as he thinks he is. In my opinion.
     
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    Linkin, Feb 28, 2018
    #84
  5. Joker

    Joker See "about me" for contact details. Contributing Member

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    Wow uhh ok. Give me some benefit of the doubt, I'm not naive enough to think that anti-boil literally means it won't boil. The BP of the liquid can be raised by adding stuff to it. That's one of the reasons you don't use water only (given that water will also rust your system substantially). I've used water in my system and it's boiled at idle, put coolant in and it doesn't. Maybe it's not a massive difference but there was a difference.

    I don't care to argue much about Delboy - but I don't think a couple of PVC plastic pipes and a pipe clamp constitute the characteristics of a corporate monkey. It's not like I idolise the guy but I can do fork seals very easily and save myself the ridiculous money charged to do such a simple job... winner in my books.
     
    Joker, Mar 1, 2018
    #85
  6. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    Had a few problems with the charging system. Have changed stator (getting 30+ volts AC) and the rectifier (tests good) but am only getting 12.4 volts DC at the battery. What am I missing here?
    Ran the bike with only water in system after flushing and made a 'jumper' wire so the fan is on all the time and the gauge doesn't get above half way, but still little bubbles coming up when run without cap. Will need some attention after the drag races (if Risky doesn't blow it up as he predicts) but need to get the charging sorted to run the fan all the time.
     
    Murdo, Mar 4, 2018
    #86
  7. Joker

    Joker See "about me" for contact details. Contributing Member

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    What is the reg/rec output voltage testing at? I.e. not connected to battery? Is there a fuse for the charging circuit that has blown? If both those good then bad battery is the only explanation id say.
     
    Joker, Mar 4, 2018
    #87
  8. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    What rpm are we testing at?
     
    Linkin, Mar 4, 2018
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  9. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    About 6,000 rpm.
     
    Murdo, Mar 4, 2018
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  10. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Any improvement at higher rpm?

    Earths on battery, frame and reg rec cleaned?
     
    Linkin, Mar 4, 2018
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  11. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    No, and yes.
     
    Murdo, Mar 4, 2018
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  12. Joker

    Joker See "about me" for contact details. Contributing Member

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    1. What's the DC voltage at the reg/rec pins. If it's under 13V it's stuffed.
    2. If the DC voltage at the pins is above 13V your battery is toast.
    3. Have you checked the fuses. My 400 has a fuse for the charging circuit that when blown won't charge my battery despite the reg/rec and stator testing fine.
    4. Could be a bad earth somewhere I suppose... but I reckon that's unlikely.
    5. Broken wire somewhere?
     
    Joker, Mar 4, 2018
    #92
  13. risky

    risky risky

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    anyone got any hydrazine. makes good horsepower but must be kept cold or will spontaneously explode?
     
    risky, Mar 5, 2018
    #93
  14. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    my67xr, Mar 5, 2018
    #94
  15. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    I just want to be part of that message - we've probably been red flagged by ASIO and Border Force because of the words hydrazine and explode
     
    ruckusman, Mar 5, 2018
    #95
  16. risky

    risky risky

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    lol.
     
    risky, Mar 5, 2018
    #96
  17. risky

    risky risky

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    used to be used in drag racing before nitro methane but was banned.doubt if gunnedah would fuel test.
     
    risky, Mar 5, 2018
    #97
  18. Wozza

    Wozza Active Member

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    Isnt that the stuff in moth balls? way way back we use to throw a hand full of moth balls into the tank, nfi if it made any difference but never had probs with moths :)
     
    • Funny Funny x 1
    Wozza, Mar 5, 2018
    #98
  19. Andych

    Andych Moderator Staff Member Premium Member Contributing Member Dirty Wheel Club

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    Just strap a nitrous kit on to it... Hide the bottle under the seat :) Winner... as long as it holds together ;)
     
    Andych, Mar 5, 2018
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  20. risky

    risky risky

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    as murdo is the steward he might blow me down the track.lol.
     
    risky, Mar 5, 2018
    #100
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