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

Project Planning on racing a FZR250 3LN1....

Discussion in 'Your 250cc Projects' started by Grant J, Dec 17, 2018.

  1. Grant J

    Grant J Active Member

    Messages:
    12
    Likes Received:
    17
    Trophy Points:
    173
    Joined:
    Apr 30, 2016
    Gender:
    Male
    Location:
    Scarborough, QLD
    My Bike:
    MC22 91
    ... Because I have one in the shed.

    It's a bit rough, and I probably can't too much of the work done by the previous owner.

    Has anyone been down this path and is willing to share their experiences?

    I already have a few MC22's and an RGV VJ21, sorry I'm essentially trying to get my collection of quarter litre bikes.

    If you'd be up for a phone call send me a PM.

    Cheers. eeecf7997dae815f890c23089aba871a.jpg
     
    • Like Like x 2
  2. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

    Messages:
    8,104
    Likes Received:
    4,809
    Trophy Points:
    1,168
    Joined:
    Jun 14, 2012
    Gender:
    Male
    Occupation:
    Troublemaker
    Location:
    North by NW NSW Oztralia - Tamworth
    My Bike:
    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Suzuki GSX250 *Triumph Bonneville 750 T140V
  3. Linkin

    Linkin The Apprentice Premium Member Dirty Wheel Club Contributing Member

    Messages:
    3,593
    Likes Received:
    2,105
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    '99 YZF-R6, '99/'00 GSF250VY
    Get good at dropping the headers to change the oil filter, as its on the underside of the sump on the 3LN1. 3LN3 and newer have a spin on filter
     
  4. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

    Messages:
    3,145
    Likes Received:
    1,840
    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
    • Informative Informative x 1
  5. Grant J

    Grant J Active Member

    Messages:
    12
    Likes Received:
    17
    Trophy Points:
    173
    Joined:
    Apr 30, 2016
    Gender:
    Male
    Location:
    Scarborough, QLD
    My Bike:
    MC22 91
    • Like Like x 2
  6. Tigger996

    Tigger996 Active Member Premium Member Contributing Member

    Messages:
    94
    Likes Received:
    63
    Trophy Points:
    88
    Joined:
    Sep 24, 2017
    Gender:
    Male
    Location:
    Totton, UK
    My Bike:
    Yamaha-Fzr250-3LN-EXUP 1989. Yamaha FZR400, Ducati 998S & 996 & 900SS & ST4. Dresda Triton. Suzuki T500 road & T500 race. RS125 with Rotax 257 engine. and a couple of Ossa trials bikes in bits and a Sachs rolling chassis
    Who makes a race fairing for the FZR250?
     
  7. fnq_fzr

    fnq_fzr Active Member

    Messages:
    43
    Likes Received:
    36
    Trophy Points:
    188
    Joined:
    Feb 1, 2012
    Gender:
    Male
    Location:
    Cairns Far North Queensland
    My Bike:
    Yamaha FZR250RR (3LN) Track bike #42
    Nobody.. :(:(
     
  8. kiffsta

    kiffsta Administrator Staff Member Dirty Wheel Club Contributing Member

    Messages:
    7,798
    Likes Received:
    5,722
    Trophy Points:
    1,168
    Joined:
    Aug 7, 2010
    Gender:
    Male
    Location:
    Brisbane
    Home Page:
    My Bike:
    90 CBR250RR , 2003 ZXR250 , Suzuki T500, 1989 gsxr250 , 1994 Honda RVF400
    @simidau , don’t your race fairings fit fzr250’s ?

    Simon from teamtiger.com.au has fibreglass fairings for mc22’s, he is on the Gold Coast, I believe the mould was taken from a fizzer , Simon’s brother was racing a fzr a few years back
     
  9. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

    Messages:
    8,104
    Likes Received:
    4,809
    Trophy Points:
    1,168
    Joined:
    Jun 14, 2012
    Gender:
    Male
    Occupation:
    Troublemaker
    Location:
    North by NW NSW Oztralia - Tamworth
    My Bike:
    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Suzuki GSX250 *Triumph Bonneville 750 T140V
  10. Grant J

    Grant J Active Member

    Messages:
    12
    Likes Received:
    17
    Trophy Points:
    173
    Joined:
    Apr 30, 2016
    Gender:
    Male
    Location:
    Scarborough, QLD
    My Bike:
    MC22 91
    Cheers fellas. This is all great info.

    I've got Simon's fairings on my MC22 and didn't realise that's where the mould had come from. I've got a few spare MC22 street fairing lying about so I'll probably mock up fairing brackets to suit and get another set off him.

    @fnq_fzr has also given me some good starting points so I'll get out the back and get tinkering. It currently has 3LN3 carbs on it (just pulled them apart for an inspection, cleaning and seeing what jet settings were in them). It had different jets in it, shagged bits here and there and different needles at different heights across the thing. I've gone with 100's in 1&4 with 97.5 in 2&3 as per some threads I've read. All the needles are now CT9's on 3rd position, I'll try and find some shims for 2&3 and go up a notch as per another thread (I think thats what the recommendation was).

    The old plugs were black and covered in fuel, probably from a couple of hours try to start the thing from the previous owner. I'll get some fresh CR9Ek's.

    If there is any great progress I'll be sure to post pics and description.
     
    • Like Like x 1
  11. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

    Messages:
    3,145
    Likes Received:
    1,840
    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
    • Like Like x 1
  12. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

    Messages:
    8,104
    Likes Received:
    4,809
    Trophy Points:
    1,168
    Joined:
    Jun 14, 2012
    Gender:
    Male
    Occupation:
    Troublemaker
    Location:
    North by NW NSW Oztralia - Tamworth
    My Bike:
    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Suzuki GSX250 *Triumph Bonneville 750 T140V
  13. Murdo

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

    Messages:
    4,824
    Likes Received:
    3,858
    Trophy Points:
    998
    Joined:
    May 4, 2013
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Tamworth, NSW
    My Bike:
    Maico 250, Royal Enfield 250, CF 250 V5 and 650TK, XL250, CBR250, ZZR250 plus a few others.
  14. Grant J

    Grant J Active Member

    Messages:
    12
    Likes Received:
    17
    Trophy Points:
    173
    Joined:
    Apr 30, 2016
    Gender:
    Male
    Location:
    Scarborough, QLD
    My Bike:
    MC22 91
    I know of a bloke with a few tzrs, I may be able to pinch some spare fairings to see how far off they are.

    Good news is the bike ran today, started very easily with choke, and once some heat in the engine it started well without it. Rev'd easily, but the dash is dead so I had no taco, temp gauge or oil light to guide me so I didn't risk anything. No noise, and no smoke so far from the engine.

    One carby bowl had a leak so I'll get onto some fresh orings for the whole carb setup. I've also ordered some fresh rubbers for cylinder to carb as they're all showing signs of ageing.

    I'll follow some of these links and see what I can see.

    Cheers again to all
     
    • Like Like x 2
  15. Grant J

    Grant J Active Member

    Messages:
    12
    Likes Received:
    17
    Trophy Points:
    173
    Joined:
    Apr 30, 2016
    Gender:
    Male
    Location:
    Scarborough, QLD
    My Bike:
    MC22 91
    And do you all still run the EXUP? Is it worth deleting for a race bike as we live in the >14k RPM band?
     
  16. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

    Messages:
    3,034
    Likes Received:
    2,189
    Trophy Points:
    923
    Joined:
    Dec 23, 2012
    Gender:
    Male
    Location:
    Thailand
    Home Page:
    My Bike:
    Yamaha FZR400 3TJ1, Honda MC22
    • Like Like x 2
  17. Grant J

    Grant J Active Member

    Messages:
    12
    Likes Received:
    17
    Trophy Points:
    173
    Joined:
    Apr 30, 2016
    Gender:
    Male
    Location:
    Scarborough, QLD
    My Bike:
    MC22 91
    Haha, I've definitely been looking on your site. I may need the 3ln3 kit though due to changed carbies from previous owner. I've attached a photo of my jet housing. 6cdf065c32b8f6808b64d2607a967310.jpg
     
    • Like Like x 1
  18. Grant J

    Grant J Active Member

    Messages:
    12
    Likes Received:
    17
    Trophy Points:
    173
    Joined:
    Apr 30, 2016
    Gender:
    Male
    Location:
    Scarborough, QLD
    My Bike:
    MC22 91
    Anyone have the front fairings off their bike and can tell me where the grey wire of the tacho is connected to please?

    The FZR400 workshop manual circuit diagram shows a direct connection to the coils, but I'm not seeing this on the little 250.

    My dash was trashed and not working at all. I've got the oil and neutral lights going, and the temp gauge, but I can't quite workout the pickup for the tacho
     
  19. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

    Messages:
    3,145
    Likes Received:
    1,840
    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
    It join's one of the wire's from the TCI in the ignition coil part of the loom
     
  20. Grant J

    Grant J Active Member

    Messages:
    12
    Likes Received:
    17
    Trophy Points:
    173
    Joined:
    Apr 30, 2016
    Gender:
    Male
    Location:
    Scarborough, QLD
    My Bike:
    MC22 91
    Does it maintain the grey colour or does it change? I have no grey wire heading towards the old plug.
     

Share This Page