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Project Project SRX250

Discussion in 'Your 250cc Projects' started by edwardo, Apr 5, 2020.

  1. edwardo

    edwardo Well-Known Member Contributing Member

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    Picked this up a couple of weeks ago. Pretty rank in general but looks to be a good base. We'll see what happens..

    Needs a fair bit of work, still haven't started it yet. Needs brake rebuild (seals are shot), the RHS clip-on is bent and binding the throttle. Got an airbox but waiting on boots. Tank is a rust bucket. Might just pay a radiator place to coat it. Lots of other bits an pieces.

    Pending on if it starts or not + how well it runs I'd like to avoid opening the engine up.


    IMG_20200405_144821.jpg IMG_20200405_144830.jpg IMG_20200405_145049.jpg IMG_20200405_144844.jpg
     
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  2. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    The SRX lads on here might be able to list the things to check. As I recall there is a nylon gear that breaks in the engine, oil pump maybe?
     
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  3. Andych

    Andych Senior Member Premium Member

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    Yep... I have only seen 1 that failed and that was on @Oigy bike... oh.. hang on... one of our Kiwi friends one failed as well.
    Easy enough to change though without having to pull the complete engine apart.
    I have a spare tank here that is in good condition.. PM me if you are interested..we can figure out a price.
    It is currently painted Ford Ruby Red but there is no 2 pak on it so easy enough to change the colour.
    I havent been out in the Garage since I got your PM on the filter thickness.. If you were to use 12.5mm (1/2") thick Unifilter foam I think you would be pretty right. I can probably map you out a pattern and scan it as well at some stage... just have a fair bit on currently so Garage time isnt high on the agenda.
     
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  4. edwardo

    edwardo Well-Known Member Contributing Member

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    Thanks for the heads up on the nylon gear, will inspect it.

    I'll see how I go with my tank, may take you up on the offer though. Hopeful to get to a shop this week and see what the damage will be for them to treat it.

    Cheers for the info on filter. I did a trial with the dish sponge which was 16mm and that seemed to fit. I was ready to order a 16mm filter panel haha so thanks. Any idea on pores per inch or however they measure the grade?

    A scanned template would be great too but I'm in no hurry so don't worry if you can't get to it. I was just going to eyeball it.
     
  5. Oigy

    Oigy Owner of many bikes, keeper of few :( Premium Member

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  6. Oigy

    Oigy Owner of many bikes, keeper of few :( Premium Member

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    Oh, and the oil pump gears Andy spoke of, no wonder the bore was stuffed, it one position, the pump did not turn at all :( IMG_20190915_135341.jpg
     
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  7. Oigy

    Oigy Owner of many bikes, keeper of few :( Premium Member

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    Here is where I got it from if your interested :) Opera Snapshot_2020-04-05_184115_mail.google.com.png
     
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  8. edwardo

    edwardo Well-Known Member Contributing Member

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    Cheers for the info! Uniflow popped up in my search and was gonna be my choice, good to know they are decent.
    Will definitely get onto these gears! Thanks!
     
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  9. edwardo

    edwardo Well-Known Member Contributing Member

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    Oil pump gears and air filter ordered.
    Fuel tank is still gross. Might try the electrolysis method to clean it out and if it goes belly up I'll have to take you up on the offer andych.

    Ended up popping out the caliper cylinders out with my tyre inflator. The bike came with a spare caliper with both bleed screws snapped and two easy outs snapped off in them good fun. Seal kits are $50, could just reuse the ones in the spare caliper..

    How nasty is that gunk in the caliper though haha. There was some rust too. Was going to treat then stick it on and bleed it. Won't rust if it's full of fluid, right?

    IMG_20200406_160321.jpg IMG_20200406_160235.jpg IMG_20200405_171331.jpg
     
  10. Andych

    Andych Senior Member Premium Member

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    Hmmm you will be very lucky if that tank doesnt leak afterwards...good luck with it though :)
     
  11. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Try some Evapo Rust from Supercheapauto or Metal Rescue from Repco in the tank, use a handful or 2 of small rock's or nut's bolt's and screw's in there as well, shake it around well
     
  12. Andych

    Andych Senior Member Premium Member

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    If you get it cleaned out and it doesnt leak... give it a real good slosh around with some diesel... that will stop it from flash rusting.
    You can always get yourself some of this stuff.
    https://rustedsolutions.com.au/
     
  13. edwardo

    edwardo Well-Known Member Contributing Member

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    Cheers for the links fellas.

    I did my zxr a while back that was no way near as bad. It sprung a leak. Not holding much hope for this one. I think I used ranex from bunnos and the nut and bolt method.

    Trying not to drop too much money into it if she's cactus, already over budget haha
     
  14. edwardo

    edwardo Well-Known Member Contributing Member

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    Well I rust treated the tank and it didn't leak. But the seal job was less than breezy.

    I took the carb off and had a look at it. Found this:
    IMG_20200415_140050.jpg
    Might just leave it. I bet if I try taking it out I'll damage it even more. Float looked mangled too. What else will I find?

    Also got an email from partzilla saying my pump gears would be delayed 6 weeks + actual delivery time.

    Kicking goals here fellas.
     
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  15. jmw76

    jmw76 Well-Known Member Premium Member

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    @edwardo have you considered the use of a molasses mixture to clean the inside of your tank. It's a slow process, but I have used it in the past to quite effectively clean up rusted parts. It will not remove paint or oil. Google the process to see if it will suit your requirements. You do need to treat the clean surface quite quickly afterwards to stop the rust returning. Maybe WD40 or something similar. Or just put some fuel in the tank.
     
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  16. BlueDragon

    BlueDragon Active Member Premium Member

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    I've used Metal Rescue and it works great. But if the rust is that bad, after removing it with metal rescue, why not put a tank liner through the tank? I've done 2 tanks and not had a problem at all. Used the KBS brand stuff. Just follow the directions and it works a treat. Unless that is, if the tank is almost ready to fall apart...
     
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  17. TonyZXR

    TonyZXR Well-Known Member

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    I've had good success with plain old white vinegar and a handful of nuts. Key is to rinse it with very hot water and then heatgun it dry and it wont flash rust
     
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  18. edwardo

    edwardo Well-Known Member Contributing Member

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    Yes I used the KBS tank seal which is a great product, I just put too much of the actual sealer in and couldn't drain the excess out! The KBS YouTube guide makes it look easy but trying to get excess out of a srx tank isn't as easy. My own fault though. It seemed to be fish eyeing. Instructions say it will bubble if there's too much. Seemed to bubble from the same spots so I thought I hadn't cleaned it well enough. Anyway it's done haha

    Haven't heard of that method before! Would not have picked molasses for cleaning a fuel tank.
     
  19. 2valve

    2valve Well-Known Member

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    Hi to all. If you need a scanned template of a O.E filter i can help with that if Andych hasn't have time to get to it ( he's a busy boy ). New O.E filter's are pretty cheap , well i wasn't charged much at all for my spare filter's.

    Do you still need a R/H bar ?. I'f so i might know where one is , i'll have to check for you though.
     
  20. edwardo

    edwardo Well-Known Member Contributing Member

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    I managed to source a filter although who knows when it will arrive haha I should be right for now.
    As for the bar I have one on the way from eBay. Cheers though!

    Here is my secondary main jet:
    IMG_20200415_165443.jpg
    It's pretty chewed out and also out of round.

    Just thinking, I could:

    A - file it flat and grind in a new flat head. It'd be shorter and still out of round.

    B - source a replacement. Anyone have a spare? Can't seem to find anywhere that has them.

    C - get some m8 x 1.0 brass thread and turn it into a jet. Just don't know the precise hole diameter as mine is wonky.
     

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