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Thread: 1973 Suzuki TM250 replica

  1. #1
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    1973 Suzuki TM250 replica

    I have acquired a 1973 Suzuki TS250 savage in a condition that is not worth restoring, engine looks like it has never been apart, and the thing isn't flogged out in every joint on the frame, but it looks like it has been in a dusty old barn. Someone has offered me $150 for a pile of stuff I have stripped off including the exhaust.

    Plan is to fabricate a under slung expansion chamber, replace the mudguards (bike had nothing) Front and side number boards, Grind all brackets off the frame I don't need and weld up a few holes like pillion footrest holes.

    I need to find some guards witch look like TM250 guards.

    A couple old expansion chambers.

    Period looking handlebar controls.

    I can trade you parts for other parts or if you can suggest places to get them?, a quick google sed the TM250 piston will work in the TS but has a shorter skirt for port timing, dose anyone know of some port mods for the TS250?

    This will be the only Japanese bike in my collection

  2. #2
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  3. #3
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    Quote Originally Posted by rudolph View Post

    I need to find some guards witch look like TM250 guards.
    DC plastics https://www.dcvmx.com/xcart/home.php?cat=287&page=1
    "If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."


    Quote Originally Posted by scracha View Post
    Even BP would shy away from cleaning up a sidecar oil spill.
    Quote Originally Posted by Warren Zevon
    Send Lawyers, guns and money, the shit has hit the fan

  4. #4
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    Is that $USD?

    I also want to find a TM cylinder head

  5. #5
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    20th January 2010 - 14:41
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    Dr200 or XT250 forks will bolt in an dlook more like a early MX bike than the full width TS hub.

    I take that back the TM250 it had a full width Hub.
    Click image for larger version. 

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    Kinky is using a feather. Perverted is using the whole chicken

  6. #6
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    There was in fact a race kit available for the TS250 - before the TM's came out I think. A couple of the kits were imported.

    IMO trying to turn it into a TM replica will be difficult - they're quite a different animal.
    What you'll finish up with will be somewhere in between the two.
    I will no longer see PM's on this a/c. If you wish to PM me, use grumphv2 a/c please - and include an email address if you require a reply.
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  7. #7
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    Quote Originally Posted by Grumph View Post
    There was in fact a race kit available for the TS250 - before the TM's came out I think. A couple of the kits were imported.

    IMO trying to turn it into a TM replica will be difficult - they're quite a different animal.
    What you'll finish up with will be somewhere in between the two.
    I have a mag article about the race kit for the Ts125 race kit it wa sall engine stuff from memory most i think was pretty much tm stuff anyway.
    I think the ozbook pages has the race kit instructions
    I cant be arsed looking
    https://www.oldjapanesebikes.com/mra...lletins/page-3

    I seen the 125stuff here
    https://www.oldjapanesebikes.com/mra...lletins/page-2



    Kinky is using a feather. Perverted is using the whole chicken

  8. #8
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    Quote Originally Posted by Grumph View Post
    IMO trying to turn it into a TM replica will be difficult - they're quite a different animal.
    What you'll finish up with will be somewhere in between the two.
    I am totally happy with that, there is one on trade me right now, something along this line but less shitty Click image for larger version. 

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    Last edited by onearmedbandit; 27th September 2019 at 23:51.

  9. #9
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    Quote Originally Posted by rudolph View Post

    I am totally happy with that, there is one on trade me right now, something along this line but less shitty Click image for larger version. 

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    Another option would be to use the old 250 engine and put it in a later set of running gear like crf250 or similar that has blown up the 250 engine would last forever and the resultant bike would be more fun to ride.



    Kinky is using a feather. Perverted is using the whole chicken

  10. #10
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    Quote Originally Posted by husaberg View Post
    Another option would be to use the old 250 engine and put it in a later set of running gear like crf250 or similar that has blown up the 250 engine would last forever and the resultant bike would be more fun to ride.
    perish the thought

  11. #11
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    Did some calculations and made this expansion chamber, I also got some TM250 guards cheep on face book they are very good quality, DC plastics make utter shit, I am going to cut that rear frame loop down and remove the brackets
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  12. #12
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    Quote Originally Posted by rudolph View Post
    DC plastics make utter shit
    They are, but better than trashing OE stuff if it's going to be ridden
    "If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."


    Quote Originally Posted by scracha View Post
    Even BP would shy away from cleaning up a sidecar oil spill.
    Quote Originally Posted by Warren Zevon
    Send Lawyers, guns and money, the shit has hit the fan

  13. #13
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    Split the cases, everything looks good but there has been moisture in there but no damage from it, crank and main bearings feel mint but will be replaced as the crank case was full of a water oil mix.

    I had NZ Cylinders fix up my KX cylinder, I might get them to bore and radius the pot edges as I have no tool I can fit in there.
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  14. #14
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    Cut off all unused brackets and shortened the rear frame loop + bent it up a bit more also welded up a few holes that were drilled for a pack rack or something. its away at the sand blasters with lots of other parts, it will get painted in 2K black.


    I cannot find any info on porting mods, dose anyone have any info?
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  15. #15
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    Frame has been blasted and sprayed, those shocks are totally rooted so I am trying to find something, they are 340mm eye to eye and have 12mm eyes, pretty common size, I ground off the step at the bottom of the transfer ports, done this to a few old 2 strokes and it makes a big difference, and cylinder was bored for the new piston, fitted a new rod kit, every bearing in the motor will be replaced.
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