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Project My '90 FZR250 3LN3

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

  1. Clancy1

    Clancy1 Well-Known Member

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    Looks good mate :) I miss the old fzr sometimes. Albeit I only ride it half a dozen times, nothing revs like them!!

    Sent from my SM-N910G using Tapatalk
     
  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
    Thank's mate, i'm slowly getting there with it, been cold and wet here for the last week so i'm not doing a lot to it atm.


    Hey, just wondering does anyone have any of their FZR plastic's off atm ?
    I am wanting to do a couple of fairing repair's but need to know what type of welding rod's to buy, they're usually made from ABS , possibly PC, PP or PE plastic.
    On the inside of the fairing's there will be a part number, maker and the plastic type used in the moulding process, if anyone can help me out that'd be great

    Cheer's, Craig
     
  3. 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've just pulled the front lower and rear left side fairing's off but cant see any marking's.
    It may be covered up by the sound deadener on the inside of the lower fairing but i don't want to replace it atm if i can find out otherwise
    I'm going with ABS if no one else know's

    I'm also thinking about a slight colour change to the black/blue and gunmetal grey factory colour's.
    Thinking about changing the gunmetal stripe's to a metallic blue, and will touch up a couple of the scratch's on the black then finish it with a final coat or 2 of PPC Diamond Clear gloss finish or similar
     
    Last edited: Jul 5, 2016
  4. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    Attached Files:

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  5. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Nah nothing anywhere i can see, the inner of the rear side panel is totally blank too

    I'm a Panel Beater/Painter/Custom Fabricator so plastic welding is easy, i've done ton's of stuff on car's and my other bike's.
    Bunning's even stock's the ABS welding rod's these day's

    ecc84e86-5f99-4e32-af9c-072f1635beeb.jpg

    I also have an Lord Fusor epoxy repair kit which will repair anything too, the dealer up the road has all their product's in stock

    StorkAWD-Product-%7B95BFC579-2AE4-41DD-B9AB-1E4D9D75D201%7D-0809113406.jpg


    The roof on this 500hp TR8 Rally car i did all the body mod's on, including fibreglass flare's, bonnet, boot, bumper's etc then painted for a friend is even held on with the Fusor Adhesive

    486_TR7_V8_(2).JPG
     
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  6. 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 had a go at repairing
    a small crack today on the bottom rear of the left fairing.
    Welded it with the ABS rod's from Bunning's, welded very easy and is just as strong as the original if not stronger
    I blended in some black just to cover it for the moment, and will respray it once i mix up some of the original colour if i can find a paint code for the Black/Blue pearl


    20160705_124426.jpg 20160705_211516.jpg 20160705_211423.jpg 20160705_212852.jpg
     
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  7. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    you've got some serious restoration skills

    :bowdown:
     
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  8. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Thank's, plastic is easy compared to steel


    This 20B RX3 i put over 500 hour's of bodywork and paint into, it ran a 6.47 1/4 mile @220mph and he lost control over the finish line
    Had all fibreglass panel's from the windscreen forward, glass bumper's and boot, gutted door's with alloy trim's, the rear 1/4 panel's were pumped out 50mm wider each side and the rear door's flared to match, and the wheel arch's were lengthened 200mm so he could run the 15 x 10's under the back

    track-championship-30th-748.jpg



     
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  9. 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 found and bought a good set of 3LN intake manifold's for my bike on Ebay Japan, $30 buy it now and $30 express post, seller said they have no crack's and aren't that old

    [​IMG] [​IMG]


    Also picked up a spare part's engine cheap today out of an '87 2KR, it's complete with carb's and 2 set's of intake manifold, air box, starter, exhaust etc
    Emulsion tube's and needle's all look good
    There was also a full loom, ignition box, 2 ignition coil's, radiator, thermostat, radiator filler neck, rear foot peg's, fuel tank outlet, and a few other bit's and piece's
    Engine was a good runner from the wrecker's that this lad bought but sold his bike before he had a chance to fit it.
     
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  10. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    I bought another horn at the wreckers today, it's the low tone off a 2006 Mercedes Benz E220
    Horn is made by Fiamm, model is AM80R 405 Hz low tone (part of a hi/low set AM80S-R), the single horn draw's 4.5 amp's so i might need to wire in a relay so i don't melt my wiring, switch and contact's

    20160710_153559.jpg
    20160710_153609.jpg



    Here's a quick toot, click on the video below to play

    th_20160710_153113.mp4.jpg
     
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    Last edited: Jul 24, 2017
  11. 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 fixed up the cracked/broken right mirror today, plastic welded the crack and then filled the missing section near the glass with the ABS filler rod's.
    All i need to do now is prime and paint it

    20160711_093203.jpg 20160711_093243.jpg 20160711_093304.jpg 20160711_193036.jpg 20160711_194431.jpg
     
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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 received my new $14 500° C Infrared Thermometer, and a pair of ceramic H4 headlight socket's today.

    20160712_003105.jpg 20160712_003123.jpg


    Tested out the thermometer against my outside thermometer and got pretty much the same reading, 12.6° C with the infrared, and 12° C on the outdoor thermometer so that's close enough.




    So i started up my bike and warmed it up.
    I took reading's off each pipe at around the same distance from the head, i found number 3 cylinder was reading about 30° cooler than # 1, 2 and 4
    Adjusted #3's mixture screw out to lean it off and raise the exhaust temp and all around close within a few degree's, adjusted the idle speed to suit and the idle has become a lot smoother, and the throttle response is way better

    Here's a quick video of the temp's after adjusting #3 carb, i'm not sure what happened to my before video though

     
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    Last edited: Jul 24, 2017
  13. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Winding the mixture screw out makes it richer as it is a fuel screw not air screw but so long as it works all is good in the world :)
     
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  14. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Hmm, strange that winding the mixture screw out make's that cylinder run hotter
    I'm going to have to recheck them tomorrow
     
  15. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    There is a thread on this topic http://2fiftycc.com/index.php?threads/idle-mixture-by-exhaust-temp.3218/
    The article that I linked to is on the money, IMHO.
    Either side of peak, the temperature will drop as the mixture in that cylinder approaches the point where it will be so rich or lean that it will not fire at all. Which indicates that your number 3 cylinder was too lean and as you added more fuel it began to burn correctly.

    The whole idea of 'n turns out' is just somewhere to start and I am amazed that these carburettors function so well with their pilot mixtures set to some arbitrary value. Kudos to the Japanese factories. Doing that on a Dell'Orto fitted to an Italian bike is a complete waste of time, which has a lot to do with the myths about hard to start etc.
    Cheers
     
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  16. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Thank's,
    i read that thread on xjrider just before i ordered the temp gun, i remember reading that now
     
  17. Bdrjnr

    Bdrjnr Member

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    I was just looking through your build thread. I take it you blasted your exhaust, I may have missed it but what gritty did you use?

    Also did you coat them with anything when you had finished?
     
  18. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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  19. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Yeah i grit blasted them first.
    I used the 80 grit Alemite, Aluminium Oxide blasting media, a 20kg bag is about $25, i have Glass Bead and Sodium Bicarbonate that i use too all depend's on the job/finish i want.
    But getting paint to stick to header's and exhaust's etc you're best off using a medium/fine abrasive grit to give the paint something to really grab ont0



    I finished them with Duplicolor High Heat Aluminium finish which came out ok,
    baked it on running the engine for 2 min's then let cool, then 5 min's and let cool, then took it out for an easy ride for an hour or so.
    Supercheap have a special every couple of week's 2 tin's for $22
    http://www.supercheapauto.com.au/on...luminium-340g.aspx?pid=324085#Recommendations

    324085.jpg


    I've heard this stuff is excellent too
    http://www.kbs-coatings.com.au/product/xtc-xtreme-temp-coating/


    I posted a couple of pic's of my setup here too
     
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    Last edited: Jul 24, 2017
  20. Bdrjnr

    Bdrjnr Member

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    Thanks for the photos and response.

    The company i work for as a factory in Melbourne that does various coatings and they have a few different grit blasters down there.

    They would probably do it for free for me but only issue is taking it off and sending it down there and then back up to sydney.

    I might see how those plastic paint/rust remover goes on my grinder this weekend,
     
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