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Project My '90 FZR250 3LN3

Discussion in 'Your 250cc Projects' started by my67xr, Jun 19, 2016.

  1. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Yamaha's , 1990 FZR250R 3LN3 , 1986 XT250TS 57R , 1984 IT200L 43G, 1976 IT400C 510
    Did some work on the muffler today, just need to finish off the tip
    I wrapped the joint in heat wrap and started it up, it's a bit deeper and a bit louder, will try it out tomorrow
    Here's a sneak peak

    20180710_205830.jpg
     
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    Last edited: Jul 10, 2018
  2. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Yamaha's , 1990 FZR250R 3LN3 , 1986 XT250TS 57R , 1984 IT200L 43G, 1976 IT400C 510
    Got the muffler close to finished now, the clamp has been welded on the front now and the tip is finished,
    only need's the tip painted and some more pop rivet's, and the mounting adapter to be tided up and painted.

    Took it for a quick ride, the exhaust is a bit louder than the stock one, and is definately deeper.
    The tune seem's ok, and at rev's it doesn't seem too loud either


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  3. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Playing around with the new GPR muffler today, trying to work out which angle i like the look of best.
    Started it up and it's pretty quiet with both db killer's fitted,
    i have a video of the sound uploading to youtube atm


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    Last edited: Jul 26, 2018
  4. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    The first one is my pick. I like things "inline" (with the blue stripe) and I also like to see as much of the rear rim as possible.
     
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  5. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    The new exhaust front pipe is now welded and the muffler sit's pretty much inline with the stripe now, just need to remake the muffler mount.
    Video didn't work for some reason so i'll need to do that again too.


    Today i fixed up my slippery pillion seat cover.
    I pulled the seat off and removed the staple's, trimmed the front of the old cover so i could lay it out flat and mark out the pattern on the leather i got ages ago.

    20180727_094402.jpg


    Stuffed around with my wife's sewing machine for a long time and finally got the cover sewn together.

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    Stapled the new leather seat cover on and refitted it to my bike, i gave it a couple of coat's of Dubbin too.

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    And here is the old original seat cover, it was a bit worn out and shiny, also had a few spot's worn through on the corner's.
    I will also recover the rider seat in leather too once i get a chance and have finished off a few other job's.

    20180727_165828.jpg
     
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  6. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    I've been trying to fit a leather cover to the riders' seat over the last couple of day's.
    Wasn't having much luck stretching it and getting it to sit flat especially 1/3 of the way back, tried starting at the side's, the front then the back, spent maybe 2.5 hour's trying over 2 day's

    Today i thought i'd try google, and
    i found exactly what i was looking for, a special brew specifically for stretching leather.
    It say's it work's within minute's and that it does, sprayed it on and had the leather fitted to the seat base in about half an hour.
    As it dry's it'll shrink a little and tighten up a bit more, although it's pretty good now.

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  7. Andych

    Andych Moderator Staff Member Premium Member Contributing Member Dirty Wheel Club

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    Looks to be pretty good. You will now have to add Motor Trimmer to your skill set



    Sent from my iPhone using Tapatalk Pro
     
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  8. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Yamaha's , 1990 FZR250R 3LN3 , 1986 XT250TS 57R , 1984 IT200L 43G, 1976 IT400C 510
    Remade the exhaust sound video of the GPR Powercone muffler today.
    My wife was doing the unco rev thing, she couldn't hold my phone still enough to do the video, lol
    Couple of rev's to 6000 rpm and a couple to 12,000 rpm


     
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  9. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Yamaha's , 1990 FZR250R 3LN3 , 1986 XT250TS 57R , 1984 IT200L 43G, 1976 IT400C 510
    And a couple of new stickers

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  10. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    15333698765541632712168.jpg
     
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  11. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Yamaha FZR400 *Triumph Bonneville 750 T140V *Triumph Daytona 675 *Triumph Tiger 800XC
    Bike is looking A1 :thumb_ups:

    That exhaust has a nice sound ... a nice deeper burble but with the FZR scream still evident :D
     
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  12. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    My Bike:
    Yamaha's , 1990 FZR250R 3LN3 , 1986 XT250TS 57R , 1984 IT200L 43G, 1976 IT400C 510
    I've not done a lot to the FZR for a while.
    Before Xmas i fitted the new ProBolt front brake lever adjuster, that was easy

    20190226_170721.jpg





    Today i fitted a Brake light flasher module to make my bike stand out a bit more to anyone
    following me, i bought a plug/socket kit from Jaycar to make it a removeable/plug in swap over, that was $3.45
    https://www.ebay.com.au/itm/GS-100A-Flash-Strobe-Controller-Flasher-Module-for-Car-LED-Brake-Stop-Light-Lamp/273514023681?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649

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    I can't upload a 4 second video here as it's too large, 7.83MB ?
     
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    Last edited: Feb 26, 2019
  13. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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  14. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Yamaha's , 1990 FZR250R 3LN3 , 1986 XT250TS 57R , 1984 IT200L 43G, 1976 IT400C 510
    I went for a ride down south Sunday on my FZR with a mate who was on his 2006 GPX250.
    We went down to Yankallia ( just before Normanville) near the coast and stopped at the bakery for lunch, they have awesome pie's etc.
    Next stop was Delamere, then we came back home via Victor Harbor.
    All went well, except for a heavy storm just before Delamere, from there to Victor Harbor is was really strong wind's, pelting rain and some fog.
    Some spot's we had to slow down to 50km/h so we could still see the road, the rest we averaged about 75km/h while it was pouring down.
    My mate hadn't really ridden much in the wet i later found out, but he did well especially since we were riding at about 30 degree's to 45 degree's from vertical trying to keep our bike's upright on the road with the wind's.
    On the way home from Victor we copped the storm again and had another 20km's in the rain and wind.
    Both bike's performed well in the wet weather.
    I ended up doing 220km's before i had to switch to reserve so the carb's must be set up well, i did about the same km's last time i did the trip when it was fine.
    Mates' GPX only used half a tank of fuel


    20190327_153346.jpg
     
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  15. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Yamaha's , 1990 FZR250R 3LN3 , 1986 XT250TS 57R , 1984 IT200L 43G, 1976 IT400C 510
    Yesterday i pulled down my spare set of 30,000km used 3LN3 carby's to have a better look at them.
    They are pretty filthy looking, and were left to dry out with fuel in them still going by the amount of shiny gum and dirt etc in the fuel bowl's and carby bodies.
    Plus the mechanic or backyarder has used some red silicon on the bowl gaskets.
    All the jet's and needle's are correct for the 3LN3/3LN5 with the #100 mains in the outers and #97.5' s in the inners, 5CT9 needles in outers and 5CT7's in the inners and N8 needle jets / emulsion tubes, the needle's and possibly the emulsion tube's look like they have been replaced
    All the needle clip's were on position 2 though


    I'm thinking about trying the needle's and emulsion tube's out in my carby's


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    I found that these carby's have been split so i suspect that they've been rebuilt at some stage
    Look's like they forgot to remove one screw and have pulled the casting boss out of carby #3
    They have used some epoxy to glue it back together
    I chipped the epoxy off and can see that the broken part wasn't even seated properly before they repaired/bodged it.
    I haven't removed the pilot merge chamber bungs or mixture screws yet to see what the ports look like inside.

    20190618_124137.jpg 20190618_124345.jpg 20190618_124407.jpg
     
    Last edited: Jun 19, 2019
  16. Yetiburger

    Yetiburger Well-Known Member

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    i Have a spare set of 3ln3 carbs with a stuffed jet housing on carb 4 if you need parts.
     
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  17. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Picked up a used Innovate wideband data log meter kit yesterday to help tune my bike's and car.
    This morning i went and saw my mate at his exhaust shop and picked up an 02 sensor bung and plug.
    Got back home and welded that in, it's the only position i could get it to fit nice


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    I also fitted my new shift lever rubber

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  18. Murdo

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

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    Nice. :thumb_ups:
    You need some blue heatshrink over that red water hose now.
     
    Last edited: Jun 25, 2019
  19. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Thank's, but the red hoses match my red ignition coil's and the red R6 shock spring.
     
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    Last edited: Jun 24, 2019
  20. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Nice weld on the bung, is it supposed to be angled? All the docs I have seen mention that.
     

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