/ Register

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

Project FZR fix up

Discussion in 'Your 250cc Projects' started by Yetiburger, Oct 7, 2017.

Page 11 of 25
  1. Yetiburger

    Yetiburger Well-Known Member

    Messages:
    226
    Likes Received:
    63
    Trophy Points:
    213
    Joined:
    Sep 11, 2017
    Gender:
    Male
    Location:
    Whanganui, New Zealand
    My Bike:
    yamaha fzr250 3ln1 x2 , Sv1000s
    OK so went to work on the bike today and cylinders 1 and 4 weren't firing. i pulled the plug for that coil and no change. s o I pulled it out and checked it. the secondary was good at 15k ohms but the primary was 3.8 ohms instead of 2.8. would that be causing the problem?
     
    Yetiburger, May 19, 2018
    #201
  2. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

    Messages:
    4,313
    Likes Received:
    2,383
    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
    Too much primary resistance in the ignition coil will draw a low more amp's through the TCI.
    Sometime's this can cause the Darlington resistor to fail inside the TCI, so best off not running it with that coil
     
    my67xr, May 19, 2018
    #202
  3. Yetiburger

    Yetiburger Well-Known Member

    Messages:
    226
    Likes Received:
    63
    Trophy Points:
    213
    Joined:
    Sep 11, 2017
    Gender:
    Male
    Location:
    Whanganui, New Zealand
    My Bike:
    yamaha fzr250 3ln1 x2 , Sv1000s
    would that explain why 1 and 4 aren't firing? I about 1 to 2 volts to the coil. which is the same as the one thats working. Could the TCI be faulty?
     
    Yetiburger, May 19, 2018
    #203
  4. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

    Messages:
    4,313
    Likes Received:
    2,383
    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
    Coil's should have around 12v on the powered side with the ignition turned on (red wire's with white stripe)
    Have you tried swapping the wire's over from coil's 2/3 and 1/4 to double check it is that coil
     
    • Like Like x 2
    my67xr, May 19, 2018
    #204
  5. Yetiburger

    Yetiburger Well-Known Member

    Messages:
    226
    Likes Received:
    63
    Trophy Points:
    213
    Joined:
    Sep 11, 2017
    Gender:
    Male
    Location:
    Whanganui, New Zealand
    My Bike:
    yamaha fzr250 3ln1 x2 , Sv1000s
    yeah ok i switched the coils round and had a play i'm 99% sure its the coil.
     
    • Like Like x 2
    Yetiburger, May 19, 2018
    #205
  6. Yetiburger

    Yetiburger Well-Known Member

    Messages:
    226
    Likes Received:
    63
    Trophy Points:
    213
    Joined:
    Sep 11, 2017
    Gender:
    Male
    Location:
    Whanganui, New Zealand
    My Bike:
    yamaha fzr250 3ln1 x2 , Sv1000s
    can new ones be sourced from anywhere?
     
    Yetiburger, May 19, 2018
    #206
  7. Yetiburger

    Yetiburger Well-Known Member

    Messages:
    226
    Likes Received:
    63
    Trophy Points:
    213
    Joined:
    Sep 11, 2017
    Gender:
    Male
    Location:
    Whanganui, New Zealand
    My Bike:
    yamaha fzr250 3ln1 x2 , Sv1000s
    also I am trying to pull my calipers apart to get the bike ready for a brake cert. The pistons are really sized in the calipers does anyone have a trick for removing them?
     
    Yetiburger, May 20, 2018
    #207
  8. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

    Messages:
    3,233
    Likes Received:
    1,421
    Trophy Points:
    918
    Joined:
    Oct 1, 2013
    Gender:
    Male
    Location:
    Narrabeen, NSW Australia
    My Bike:
    Yamaha FZR250 3LN1
    Usually they will all make their way out eventually, I used to put some metal flat bar between the freed ones and pump the lever - once the freed ones had met the resistance of the metal bar the remaining ones would shift eventually.

    This would depend on your brake system still being intact and free from air - mistake I made the first time was opening the brake system - bleeding it back clear was a PITA

    hope this helps
     
    • Thanks! Thanks! x 1
    Last edited: May 20, 2018
    ruckusman, May 20, 2018
    #208
  9. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

    Messages:
    4,313
    Likes Received:
    2,383
    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
    Try using a grease gun on the bleed nipple to pump them out,
    You'll need to block off the inlet to the caliper with a suitable bolt.
     
    • Agree Agree x 3
    • Like Like x 1
    • Informative Informative x 1
    my67xr, May 20, 2018
    #209
  10. Yetiburger

    Yetiburger Well-Known Member

    Messages:
    226
    Likes Received:
    63
    Trophy Points:
    213
    Joined:
    Sep 11, 2017
    Gender:
    Male
    Location:
    Whanganui, New Zealand
    My Bike:
    yamaha fzr250 3ln1 x2 , Sv1000s
    ohk aren't they like an SAE thread?
     
    Yetiburger, May 20, 2018
    #210
  11. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

    Messages:
    5,108
    Likes Received:
    3,477
    Trophy Points:
    1,148
    Joined:
    Dec 23, 2012
    Gender:
    Male
    Location:
    Thailand
    Home Page:
    My Bike:
    Yamaha FZR400 3TJ1, Honda MC22
    There are no imperial threads on your Yamaha.
     
    • Like Like x 1
    • Agree Agree x 1
    maelstrom, May 20, 2018
    #211
  12. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,737
    Likes Received:
    2,882
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    FZR250R 3LN6
    UNLESS some numpty has been in there and replaced bolts with whatever they had lying around
     
    Linkin, May 20, 2018
    #212
  13. Mike Fulcher

    Mike Fulcher Active Member

    Messages:
    118
    Likes Received:
    38
    Trophy Points:
    53
    Joined:
    Feb 3, 2018
    Gender:
    Male
    Occupation:
    Owner of Mikes Chainsaws & Outdoor Power Ltd
    Location:
    New Plymouth New Zealand
    My Bike:
    85' Yamaha SRX 250, 87' Honda VT250, 86' Suzuki NZ 250, 87' Honda CBX 250, 74' Yamaha AGR100R Racer
    Yes you get plenty of them, in our industry you would not believe what some people use to secure a loose cover etc, even using self tapping woodwork screws in some poor old 5/6/8mm threads, which can then only be repaired with the trusty OL Recoil thread inserts.
     
    Mike Fulcher, May 23, 2018
    #213
  14. Yetiburger

    Yetiburger Well-Known Member

    Messages:
    226
    Likes Received:
    63
    Trophy Points:
    213
    Joined:
    Sep 11, 2017
    Gender:
    Male
    Location:
    Whanganui, New Zealand
    My Bike:
    yamaha fzr250 3ln1 x2 , Sv1000s
    So I had gifts from over the ditch arrive today thanks grey. Thanks for the sticker and cards. Also have managed to get the pistons out of the rear caliper (using the grease gun method). After a clean up with a scotchy there seems to be a little bit of pitting at the top. not sure if I'll need to replace them or not, will try post some good pics of them tomorrow. 20180525_164309.jpg 20180525_164312.jpg 20180525_164319.jpg 20180525_164342.jpg
     
    • Like Like x 1
    • Winner Winner x 1
    Yetiburger, May 25, 2018
    #214
  15. Yetiburger

    Yetiburger Well-Known Member

    Messages:
    226
    Likes Received:
    63
    Trophy Points:
    213
    Joined:
    Sep 11, 2017
    Gender:
    Male
    Location:
    Whanganui, New Zealand
    My Bike:
    yamaha fzr250 3ln1 x2 , Sv1000s
    whats the verdict? are these to far gone to re use?
    20180526_215014.jpg 20180526_215021.jpg 20180526_215144.jpg
     
    • Bummer Bummer x 2
    Yetiburger, May 27, 2018
    #215
  16. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

    Messages:
    4,313
    Likes Received:
    2,383
    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
    my67xr, May 27, 2018
    #216
  17. Murdo

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

    Messages:
    6,400
    Likes Received:
    4,788
    Trophy Points:
    1,148
    Joined:
    May 4, 2013
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Tamworth, NSW
    My Bike:
    1937 Royal Enfield 250, CF Moto 250 V5, Honda's XL250, CBR250, FT500 plus a few others.
    To reuse them will only give trouble (leaking fluid, etc) later on, which may cost a lot more to fix.
     
    • Agree Agree x 1
    Murdo, May 27, 2018
    #217
  18. Yetiburger

    Yetiburger Well-Known Member

    Messages:
    226
    Likes Received:
    63
    Trophy Points:
    213
    Joined:
    Sep 11, 2017
    Gender:
    Male
    Location:
    Whanganui, New Zealand
    My Bike:
    yamaha fzr250 3ln1 x2 , Sv1000s
    Ok so bit of an update. exams are over now so I can finally get back into this bike. I have ordered new pads, seals and pistons for all the brake so the will be rebuilt. I also remember seeing a thread on here somewhere about somebody rebuilding they're master cylinder? does anybody know where that is? I have also purchased a second hand coil to replace my knackered one. but this is also had it. does anybody know where to source after market coils from?
     
    Yetiburger, Jun 25, 2018
    #218
  19. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

    Messages:
    4,313
    Likes Received:
    2,383
    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
    Weird for the new coil to be dead too isn't it?
    What reading's are you getting from it ?

    You could do a coil on plug conversion to it for the price of one brand new coil
    Just find 4x good used 2008 GSXR750/1000 ignition coil's (low km's if you can find them) and some wiring socket's and a couple of length's of wire and follow the diagram instruction's here
    The Denso ignition coil part number is 129700-4400
    Otherwise try Ignitec for some new one's, just tell them the coil reading you are looking for and they might suggest some to you
    http://www.ignitech.cz/en/vyrobky/accessories/ic/ic.htm
    Price list- http://www.ignitech.cz/zdroj/en/ceniky/USD/price list accessories usd.pdf

    Post number 2 in this thread has a good diagram etc
    https://www.2fiftycc.com/index.php?threads/coil-on-plug-conversions.9631/#post-105479
     
    • Thanks! Thanks! x 1
    Last edited: Jun 25, 2018
    my67xr, Jun 25, 2018
    #219
  20. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

    Messages:
    10,929
    Likes Received:
    6,720
    Trophy Points:
    1,168
    Joined:
    Jun 14, 2012
    Gender:
    Male
    Occupation:
    Between a Rock and a Hard Place
    Location:
    North by NW NSW Oztralia - Tamworth
    My Bike:
    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Yamaha FZR400 *Triumph Bonneville 750 T140V *Triumph Daytona 675 *Triumph Tiger 800XC
    GreyImport, Jun 25, 2018
    #220
Page 11 of 25

Share This Page