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Project Yamaha SRX 250 3WP

Discussion in 'Your 250cc Projects' started by Andych, Oct 9, 2016.

  1. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Any area's that were rubbed through to the next layer will need to be sealed off before repainting,
    best thing to use is a 2 part epoxy primer and let it cure for a few day's before rubbing back, if you rub through it it'll need another couple of heavy coat's then rub back again.
     
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  2. Andych

    Andych Senior Member Premium Member

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    This was basically a trial run to make sure I was happy with the colours.. hence the Aerosol cans.
    I have their 2 pak primer and the paint I have is also 2 pak so hopefully it will all be fine..
    It served the purpose though.. I do like the colours :)
     
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  3. Andych

    Andych Senior Member Premium Member

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    Finally got to do a bit on the SRX today... before it became arctic down here (currently 8.5 feels like 2.3 and that is warmer than 2 hrs ago).
    Made up a new Starter cable and earth cable... both heavier cable than standard. Soldered ends as I dont have large enough Crimping Pliers.
    Mostly have the new (old) harness in the correct position now.
    I still need to put new seals into the FZR600 forks and paint the lowers.. as well as a multitude of smaller stuff but each time I am a little closer.
     
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  4. Andych

    Andych Senior Member Premium Member

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    Got back into the SRX today... front forks off and stripped. I grabbed an old FZR250 fork inner from @GreyImport last week while in the Arctic North, just to see if the inners would swap over... unfortunately not. There are a number of differences mostly in sizing.
    The big difference is in the springs. The 600 has a small spring (similar to the rebound spring) sitting on top of the progressive main spring. The damper rod is a bit bigger and the holes in the Damper rod or smaller... I will post some pics a bit later.
    Overall the inner on the FZR600 is 50mm longer than the 250.
    the 600 forks were in good condition, there was plenty of oil in there and it didnt smell horrific, which is a bonus. The seals were not too bad and I could probably have gotten away with just painting the lowers... but, at least now there will be brand new seals, dust covers to match the paint..
     
    Last edited: Aug 30, 2020
  5. Andych

    Andych Senior Member Premium Member

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    Pics of the Forks
    Parts as they come out... Spacer, heavy short spring and seat, main progressive spring, Damper rod (with rebound spring)
    UNADJUSTEDNONRAW_thumb_13fa.jpg
    UNADJUSTEDNONRAW_thumb_13fb.jpg
    UNADJUSTEDNONRAW_thumb_13fc.jpg
    UNADJUSTEDNONRAW_thumb_13fd.jpg

    This shows the difference between the Damper rod and rebound spring.. . FZR250 is on the right
    UNADJUSTEDNONRAW_thumb_13fe.jpg

    And I managed to get 3 coats of Gunmetal grey metallic onto the lowers... 2K clear maybe next weekend... maybe..
    UNADJUSTEDNONRAW_thumb_13f6.jpg
    UNADJUSTEDNONRAW_thumb_13f7.jpg
    UNADJUSTEDNONRAW_thumb_13f8.jpg
    UNADJUSTEDNONRAW_thumb_13f9.jpg
     
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  6. Andych

    Andych Senior Member Premium Member

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    Still waiting on having enough stuff to clear coat before laying some 2K clear onto the fork lowers... maybe next weekend.
    I have been checking out as much info as I can on the FZR600 forks and I think I will be deleting the small heavy spring that is at the top... It isnt in any of the parts lists and even a fat fella like me cant put enough pressure on the springs to get the top cap done up with it in there... Besides, the SRX is substantially lighter than an FZR600 and I can use the adjustable caps I have as they are the same thread... so I can add some extra preset if needed.
    All parts carefully packed away awaiting the lowers to be clear coated.
     
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  7. Andych

    Andych Senior Member Premium Member

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    So... finally back to the poor unloved SRX...
    Front forks have been clear coated and re-assembled... discs have been painted (did I say how much I hated masking up floating discs for painting) and the front end reassembled.
    I still need to sort out new brake hoses front and rear but plenty of time over the next few weeks (3 weeks leave will go quickly though).
    UNADJUSTEDNONRAW_thumb_1bbc.jpg
    UNADJUSTEDNONRAW_thumb_1bbd.jpg
     
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  8. 2valve

    2valve Well-Known Member

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    That's looking very nice there buddy , you've done very well.
    Those front rotor's / caliper's are bloody huge !. That is a one pinky finger brake set up if i've ever seen one. I wasn't game enough to try a emergency stop on my stock set up , but your set up is in a different league.
     
  9. Andych

    Andych Senior Member Premium Member

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    Umm. Yep, slight overkill but hey, the only differences to the donor are Horsepower and some weight


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  10. 2valve

    2valve Well-Known Member

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    I meant no criticism , it actually completes the front of the bike , being a double side front end. I don't really like the look of the O.E single disc front end , it just looks wrong. Hence liking what you have done.
     
  11. Andych

    Andych Senior Member Premium Member

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    All good mate, I must admit I prefer the twin disc setup as well. I just went a little overboard


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  12. Andych

    Andych Senior Member Premium Member

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    @2valve asked me a while ago how I was going to match up my rear brake pedal with the new chromed gear lever.
    I decided last night to clean up the brake pedal with a wire brush on a drill and a light abraisive brush... then dunk it into the palting bath to see how it turned out... well a little more complicated than that but you get the drift.

    Well, I am pretty pleased with it... not as smooth as chrome but a far cry from the dull cast steel pedal it was originally.
    IMG_6162.jpeg IMG_6163.jpeg
     
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