1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Project My project MC22

Discussion in 'Your 250cc Projects' started by Krompot, May 21, 2020.

  1. Krompot

    Krompot Active Member Premium Member

    Messages:
    63
    Likes Received:
    15
    Trophy Points:
    78
    Joined:
    Feb 18, 2020
    Gender:
    Male
    Location:
    New Zealand
    My Bike:
    CBR250RR, Hornet 900
    Hey - doing a engine rebuild. Bike was eating oil on a 6 hour ride. Found this on one of the valves - what is it? Should i chip it off?

    Thanks.

    20200521_152221.jpg
     
  2. Murdo

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

    Messages:
    5,900
    Likes Received:
    4,441
    Trophy Points:
    1,148
    Joined:
    May 4, 2013
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Tamworth, NSW
    My Bike:
    1938 Royal Enfield 250, CF Moto 250 V5, Honda's XL250, CBR250, VT250F2, FT500 plus a few others.
    It is just burnt oil. Use a wire brush in a drill if you are not going to take the valves out of the head.
     
  3. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

    Messages:
    4,313
    Likes Received:
    2,368
    Trophy Points:
    898
    Joined:
    Jun 18, 2016
    Gender:
    Male
    Occupation:
    Panel Beater, Spray Painter, Custom Fabricator
    Location:
    Adelaide, South Australia
    My Bike:
    Yamaha's , 1990 FZR250R 3LN3 , 1986 XT250TS 57R , 1984 IT200L 43G, 1976 IT400C 510
    Unburnt fuel can also help the carbon etc build up in the combustion chamber's and on top of the piston's
    You could also use Threebond Super Engine Conditioner from Repco, spray it on, let it soak then scrub it off, it's also great for cleaning carbon and oil etc off piston's and between the piston's and ring's
     
    Last edited: May 22, 2020
  4. Krompot

    Krompot Active Member Premium Member

    Messages:
    63
    Likes Received:
    15
    Trophy Points:
    78
    Joined:
    Feb 18, 2020
    Gender:
    Male
    Location:
    New Zealand
    My Bike:
    CBR250RR, Hornet 900
    Thanks for the replies.
     
  5. Krompot

    Krompot Active Member Premium Member

    Messages:
    63
    Likes Received:
    15
    Trophy Points:
    78
    Joined:
    Feb 18, 2020
    Gender:
    Male
    Location:
    New Zealand
    My Bike:
    CBR250RR, Hornet 900
    Hi,

    I'm a poor 18yo. Don't have the money to spend 200 euros on OEM rings. Does anyone have any experience with Chinese engine parts? Have some in my GS500 project and has been fine for 5K, worried about this bike because of high RPM. Wondering if RPM matters though because piston speed is still normal.

    Thanks.
     
  6. Linkin

    Linkin The Apprentice Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,251
    Likes Received:
    2,491
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    MT09SP, GSXR250R GJ73A
    Not for the MC22 specifically but I have used the AHL brand pistons and rings on an FZR250 3LN in the past with no ill effects. Available on aliexpress
     
  7. Murdo

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

    Messages:
    5,900
    Likes Received:
    4,441
    Trophy Points:
    1,148
    Joined:
    May 4, 2013
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Tamworth, NSW
    My Bike:
    1938 Royal Enfield 250, CF Moto 250 V5, Honda's XL250, CBR250, VT250F2, FT500 plus a few others.
    I have used the AHL piston and rings in my three CBR's and have not had any problems. The CBR drag bike sometimes goes past redline and has been going hard for three years of abuse.
     
    • Like Like x 1
  8. Krompot

    Krompot Active Member Premium Member

    Messages:
    63
    Likes Received:
    15
    Trophy Points:
    78
    Joined:
    Feb 18, 2020
    Gender:
    Male
    Location:
    New Zealand
    My Bike:
    CBR250RR, Hornet 900
    Thank you for the replies.
     
  9. Krompot

    Krompot Active Member Premium Member

    Messages:
    63
    Likes Received:
    15
    Trophy Points:
    78
    Joined:
    Feb 18, 2020
    Gender:
    Male
    Location:
    New Zealand
    My Bike:
    CBR250RR, Hornet 900
    Hi.

    Anyone have any idea where i could buy a new oil pump? Local dealer charges $400...
    Cmsnl out of stock. Thanks.
     
  10. Krompot

    Krompot Active Member Premium Member

    Messages:
    63
    Likes Received:
    15
    Trophy Points:
    78
    Joined:
    Feb 18, 2020
    Gender:
    Male
    Location:
    New Zealand
    My Bike:
    CBR250RR, Hornet 900
    Also - would an MC19 oil pump be interchangable with the MC22? Thanks.
     
  11. Murdo

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

    Messages:
    5,900
    Likes Received:
    4,441
    Trophy Points:
    1,148
    Joined:
    May 4, 2013
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Tamworth, NSW
    My Bike:
    1938 Royal Enfield 250, CF Moto 250 V5, Honda's XL250, CBR250, VT250F2, FT500 plus a few others.
    What is wrong with your pump?
    Aliexpress may have some. MC-19 should be the same as they are all MC-14 engines.
     
  12. Krompot

    Krompot Active Member Premium Member

    Messages:
    63
    Likes Received:
    15
    Trophy Points:
    78
    Joined:
    Feb 18, 2020
    Gender:
    Male
    Location:
    New Zealand
    My Bike:
    CBR250RR, Hornet 900
    Bits of bearing material went through it... deep gauges in it.
     
  13. Krompot

    Krompot Active Member Premium Member

    Messages:
    63
    Likes Received:
    15
    Trophy Points:
    78
    Joined:
    Feb 18, 2020
    Gender:
    Male
    Location:
    New Zealand
    My Bike:
    CBR250RR, Hornet 900
    Hi -

    Trying to reassemble the oiling system on my project MC22. Everything fits except ORIFICE 5.0x1.0 (JDM) as per this website. https://www.cmsnl.com/honda-cbr250rr-mc22-1990-l-japan_model14665/partslist/E11.html
    It's part #16.

    Have had a look on https://www.bike-parts-honda.com/ho.../OIL-PUMP-OIL-PAN-OIL-FILTER/81708/E_11/1/912 and the schematic shows the same location. Same with a service manual i found on here.

    Here is a YouTube video:
    I made a mistake towards the end of the video - i meant the orifice is longer than the hole inside the crankcase.

    Any advice would be appreciated.
    Thanks,
    Kyle
     
  14. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

    Messages:
    4,418
    Likes Received:
    2,940
    Trophy Points:
    923
    Joined:
    Dec 23, 2012
    Gender:
    Male
    Location:
    Thailand
    Home Page:
    My Bike:
    Yamaha FZR400 3TJ1, Honda MC22
    Never taken one apart. Parts diagram shows the part fitting to the pump with an o-ring. Does yours? If not I would suggest it is the wrong part.
     
  15. Krompot

    Krompot Active Member Premium Member

    Messages:
    63
    Likes Received:
    15
    Trophy Points:
    78
    Joined:
    Feb 18, 2020
    Gender:
    Male
    Location:
    New Zealand
    My Bike:
    CBR250RR, Hornet 900
    I've got the o-ring for it. Can't be any other part: there are only 2 orifices in the engines and i have both. One is in the correct spot, the other...
     
  16. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

    Messages:
    4,418
    Likes Received:
    2,940
    Trophy Points:
    923
    Joined:
    Dec 23, 2012
    Gender:
    Male
    Location:
    Thailand
    Home Page:
    My Bike:
    Yamaha FZR400 3TJ1, Honda MC22
    The Honda parts book for the MC19 shows part 16 & 17 swapped over. You best check that. The o-ring you have on the top one is the wrong o-ring. It is very hard to follow your video because you move the camera too fast. 3 or photos would be better than a video IMHO
     
  17. Murdo

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

    Messages:
    5,900
    Likes Received:
    4,441
    Trophy Points:
    1,148
    Joined:
    May 4, 2013
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Tamworth, NSW
    My Bike:
    1938 Royal Enfield 250, CF Moto 250 V5, Honda's XL250, CBR250, VT250F2, FT500 plus a few others.
    I think you might have the restrictor that goes into the head oil feed pipe. Try swapping them around.
     
  18. Krompot

    Krompot Active Member Premium Member

    Messages:
    63
    Likes Received:
    15
    Trophy Points:
    78
    Joined:
    Feb 18, 2020
    Gender:
    Male
    Location:
    New Zealand
    My Bike:
    CBR250RR, Hornet 900
    Hi. Thanks for the replies :)

    You're right. I just checked. Thanks Murdo.
    upload_2020-6-20_21-0-4.png

    do you mean this o-ring? I had to buy one from the hardware store as i lost the old one. It's the fit i could find - it's the same thickness as the original.

    Thanks everyone.
     
  19. Krompot

    Krompot Active Member Premium Member

    Messages:
    63
    Likes Received:
    15
    Trophy Points:
    78
    Joined:
    Feb 18, 2020
    Gender:
    Male
    Location:
    New Zealand
    My Bike:
    CBR250RR, Hornet 900
    Having trouble finding an oil pump in good condition. The wreckers near me have some but they're all super worn out with scratches. Honda doesn't stock anymore. Can't find any dealers with leftover stock. What to do?
     
  20. Andych

    Andych Senior Member Premium Member

    Messages:
    3,454
    Likes Received:
    1,893
    Trophy Points:
    898
    Joined:
    Oct 6, 2016
    Gender:
    Male
    Location:
    Sydney
    My Bike:
    1987 Yamaha SRX250, Honda 1975 CB400F, Honda 1974 SL125 K1
    • Agree Agree x 1

Share This Page