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Project Yamaha SRX 250 3WP

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

  1. Andych

    Andych Well-Known Member Premium Member

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    Hmmm maybe but all the Sumitomo Calipers I have seen have Sumitomo cast into the back (inside) of them.. Not that it really matters as it seems the 34mm, 27mm are a common piston size so seal kits would tend to be generic for that size I would think... unless it was the OEM kit. Either way.. hopefully I will end up with some better calipers or pistons at least than I have now.
    Thos Triumph calipers are nice though... probably need to go to larger diameter discs too with them..
     
  2. jmw76

    jmw76 Well-Known Member

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    Not too hard to fill or grind off the cast name. A bit of paint and they look original.
     
  3. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

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    Zippity do dah :fuckyou:

    calipers (Small).png
     
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  4. Andych

    Andych Well-Known Member Premium Member

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    A box full of goodies... and you thought they would be difficult to find :)
     
  5. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

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    well the first set were on top but the second set were under 1 ZXR and 2 or 3 Fizzers ... :D

    Ill take off all the junk and clean them a little tomorrow
     
  6. Andych

    Andych Well-Known Member Premium Member

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    Don’t worry about cleaning them too much. As long as we can see the pistons are not too chewed up.

    Are you going to put twins on the Flyer or go with a single 2KR disc to save weight?


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  7. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

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    The speed Ill be doing tossing out a brick on a string will probably be enough :cool:
     
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  8. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

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    Pistons look fine

    calipers 2 (Small).png
     
  9. Andych

    Andych Well-Known Member Premium Member

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    It has been a little while since I posted anything on the SRX...mainly as I have done very little..
    I have spent some time with an old very worn master cylinder trying to pump out the pistons in another set of front brakes but it just isnt up to it..so that will go on the back burner for now.
    Dropped my rims around to the metal polisher today and he is going to protect the paint and bring those lips up really nicely.. which in hindsight I should have done ages ago...lol
    My rims were too badly corroded for me to really bing them up nicely. They looked great from a distance but were not up to scratch when up close.
    I am still waiting on my head to be finished.. I think the exhaust seats were going to be an issue so he may have had to install new ones.. . that will hurt.
    Once I have the head back I can finish off the 350 engine.. maybe even think about running it.. nah... I will wait :)
     
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  10. Andych

    Andych Well-Known Member Premium Member

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    Had a frustrating day on Saturday.. I decided to swap the Tacho drive from the 250 Clutch cover tp my 350 clutch cover.. first job was to remove the locating screw.. head broke off... OK, so I ended up having to drill it out and then re-tap the hole. Then I needed to get the drive gear and the drive gear axle out of the 250 cover...
    So lots of heat on the back of the Clutch cover from my propane torch and the axle came out.... the gear needed a lot more time as it is held in by a seal which is a very tight fit and no leverage.
    Managed to get it all done though... then put the axle into the freezer for a couple of hours while I did a few other things... it went back in nice and easy with the press.

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    I ended up removing the rear shock rocker arm and repainting it to the frame colour... I originally painted it black but I think it will blend better in the same colour as the frame.
    I also painted my rocker cover in Eastwoods Wrinkle Finish gloss black..It was probably a little cold to get the wrinkle effect going properly.. I might have to read up and do it again... but.. at least I have some progress :)
     
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  11. Andych

    Andych Well-Known Member Premium Member

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    Managed a few things over the long weekend. My secondary main jet arrived so I finished off the 350 carby. The diaphragm cap was pretty tatty with some corrosion in the chrome so it got a coating of Black wrinkle finish, as did the rocker cover.

    I also finished of timing the spare 250 engine and all I need to do now is find the clutch cover gasket I have for it.
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  12. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Getting close now.
     
  13. Andych

    Andych Well-Known Member Premium Member

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    Not as close as I would like... still waiting on the head... that has been a drama all on its own. Wheels are being polished. It is too cold to paint currently unless I rent out a booth.. might do that anyway.
    A few spacers to be made for the front end.. brakes.. umm I think that is about it lol
     
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  14. T M Fulcher

    T M Fulcher Member

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    What is that paint you used? and does it come in other colours?
     
  15. Andych

    Andych Well-Known Member Premium Member

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    It is Eastwood’s wrinkle finish paint. I am pretty sure they do a red wrinkle paint as well.
    VHT also do a wrinkle paint and the same finish can be done by powdercoaters.


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  16. Andych

    Andych Well-Known Member Premium Member

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    Decided to change the title of the thread as it wont be a Cafe Racer... even though the 3WP was aimed at the Cafe Racer style..
    Some more new parts during the week... Factory grips, foot-rest rubbers and screws plus a few special washers for the gear-change linkage etc.
    The gold titanium nuts for the rear sprocket arrived and are the right size this time... yay.

    Plus a couple of pics of the 350 carby all back together... plus the Master Cylinder showing the size of the Boss that I need to put the helicoil into.. I think it will be fine.
    It is raining here today so not sure I want to be outside in the garage for too long.. might just finish getting the pistons out of the front calipers and clean them in the Ultrasonic....



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  17. Andych

    Andych Well-Known Member Premium Member

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    I picked up the wheels from the polisher today... very glad I had the lips polished... now I need to clear the painted section on the front wheel and tidy up the rear... put in some valves and throw the tyres on... whoa.. maybe I am moving too fast there... lol

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  18. Andych

    Andych Well-Known Member Premium Member

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    Off early in the morning to check out some SRX600 bits that could make a big difference in sorting out the front end of my SRX350.
    It is an 86 full front forks etc which is the same offset and Centre distance as the FZR so I can use my wheels with no additional spacers, brake mounts are the same and it comes with correct size bars etc.
    Still has dual discs but will be much more of a stock setup than what I was originally looking at doing.


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  19. Andych

    Andych Well-Known Member Premium Member

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    After a pleasant drive up the mountains I ended up buying a complete front end from a 1986 SRX600.
    The guy I bought it from had done a lovely Resto-mod on his SRX600.
    Massive USD front end with big Brembo radial calipers, fabricated and braced swing arm and CBR wheels. Lots of engine mods but it still pretty much looked like an SRX600 but just a bit meaner.

    Anyway, I got front forks, triple tree, top bridge, bars, controls, mirrors, headlight bracket, indicators, mudguard and mount, braided lines 18” front wheel, discs and calipers.
    I won’t use the front wheel or the brakes as initial measurements look like the FZR brakes are a straight bolt on.
    The forks have aftermarket progressive rate springs and the standard ones are there too.
    The seller threw in a steering damper as well.
    Not too bad for $200

    I was tempted to buy the 18” rear wheel as well but I would need to weld a bracket onto the swing arm for the brake torque arm.
    If the rear suspension had been mono shock it may have worked but the 600 is twin shock.

    I haven’t ruled out the rear wheel just yet though lol

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  20. Andych

    Andych Well-Known Member Premium Member

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    Just calculated out the trail using these forks and it comes in at a nice 3.86" which should make for a nice handling little bike.. eventually lol
     

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