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Project Risky's FZR250 2KR

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

  1. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Like a bought one :thumb_ups:
     
  2. risky

    risky risky

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    knowing murdo probably better.
     
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  3. Murdo

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

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    It is all together, running, tuned, brakes bled and test ridden around block. Seems to go well (only went to 8,000rpm as it is still running in new crank bearings).
     
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  4. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    What did you do for intake manifold's ?
     
  5. risky

    risky risky

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    i found some off another wrecked bike i had.looking forward to running it in and being on historic plates come january 2nd. then the gunnedah drags against an mc19 come march.
     
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  6. Murdo

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

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    Here is your photos Risky.
    Risky's FZR 001.JPG Risky's FZR 003.JPG
    Will look good when YOU wash and polish it. :D
     
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  7. risky

    risky risky

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    will be even better doing a hot 1/8th at gunnedah.lol. ct18, cutting polish and a wax is in order. see you friday arvo and time trials on that back road on saturday.
     
  8. Joker

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

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  9. risky

    risky risky

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    worked on the fizzer and the mongrel still boils atidle. any ideas?>?
     
  10. kiffsta

    kiffsta Senior Member

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    Get a Honda ?
     
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  11. risky

    risky risky

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    got a few
     
  12. ShaneP

    ShaneP Well-Known Member

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    Does it boil or is it cylinder head gasket leak? All bikes should boil at idle if the fan doesn't kick in. It just usually takes a long time from cold. Check the thermostat is opening and pump is making the coolant flow.
     
  13. risky

    risky risky

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    changed the instrument panel, temperature and fan switch, replaced radiator and fan with other units and fan worked on jumper leads from battery but is not coming on in bike.changed thermostat as well. new coolant. when motor first start the water level is sucked down.need the mongrel to work for the drags in a few weeks. can ride the cbx supersport at the vjmc weekend but really wanted to show how those little screamers go. are well murdo is casting an eye on it friday.
     
  14. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Sound's like there is still air in the system?
    When you fill it, do it at idle speed and make sure you tilt the bike at a few different angle's and keep the coolant topped up as air come's out
    Lean the handlebar's onto a wall if needed
     
  15. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    3LNs have block drain bolts

    Coolant drain head.jpg
     
  16. kiffsta

    kiffsta Senior Member

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    If it’s boiling after 5 mins then I would guess that your water pump is not working
     
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  17. ShaneP

    ShaneP Well-Known Member

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    But if the coolant level drops when started, then it seems the pump works. The fan may not kick in until 102-107°C (over boiling point), so you have to have the cap on (and working) to get the fan to start. Alternatively, manual fan switch.
     
  18. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    I'm very interested to know your thoughts on the quality of the chinese parts - specifically the bearing shells, both rod and main. I assume you ran plastiguage and were pleased with the results.
     
  19. Murdo

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

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    No I don't like plastigauge, I prefer to measure with micrometer. They all came withing .001 of each other when checked for thickness, ovality and crush, so I was happy to use them. As for their lasting poweress, that depends on how many revs the operator gives the engine running it in and how quickly the oil pump can get pressure to the bearings. I always like to 'prime' an engine after a rebuild by spinning on the starter without the plugs installed until I can see oil coming out of the cam bearings (the oil has to fill the crank bearings and galleries before going to head), then fit spark plugs and fuel and fire it up.
    I run the same bearings in my CBR250R that I use for drag racing (in two different engines now) and although have not done many Kms, they have been hard Kms for engine bearings with no problems.
     
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  20. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Had a thought about the overheating - blocked up from the blue silicone?
     

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