1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Help Yamaha SRX250

Discussion in 'Yamaha 250cc Twins' started by Arthur Freeman, Aug 1, 2019.

  1. Arthur Freeman

    Arthur Freeman Active Member

    Messages:
    9
    Likes Received:
    4
    Trophy Points:
    173
    Joined:
    Feb 20, 2015
    Gender:
    Male
    Location:
    Tyabb, Victoria, Australia
    My Bike:
    1979 Suzuki Gt250EN (X7)
    Dear All, Been a while since I put a message/question onto the Forum. I have a really nice SRX250, which has an aftermarket exhaust. It does not use the "sliencer" box unedr the engine, rather it has a 2into1 echaust from the cylinder heads to under the gearbox/frame, then there is a muffler - all this produces a lovely exhaust not ( which even my wife admires!!!). So where does one look for such an exhaust for my next SRX250?
    Cheers, Arthur, Victoria, Australia
     
  2. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

    Messages:
    3,979
    Likes Received:
    2,207
    Trophy Points:
    923
    Joined:
    Nov 19, 2013
    Gender:
    Male
    Occupation:
    Gardener
    Location:
    Tasmania
    Home Page:
    My Bike:
    Spada, VT250F & ZX2R
    Can you post some pics please Arthur?
     
  3. Andych

    Andych Moderator Staff Member Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,289
    Likes Received:
    2,504
    Trophy Points:
    918
    Joined:
    Oct 6, 2016
    Gender:
    Male
    Location:
    Albury 2641
    My Bike:
    1987 Yamaha SRX250, Honda 1974 SL125 K1, 2022 Triumph Tiger Sport 660
    I think you will find it has been custom made. I have seen a few Custom exhausts on SRX250 race bikes in Japan but no aftermarket items.
     
  4. 2valve

    2valve Well-Known Member

    Messages:
    861
    Likes Received:
    352
    Trophy Points:
    348
    Joined:
    Oct 12, 2016
    Gender:
    Male
    Location:
    Glen Innes Australia
    My Bike:
    1985 Yamaha SRX 250
    Picture of the bike would be nice please. Or have you already done that and iv'e missed it :headbang:.
     
  5. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

    Messages:
    4,313
    Likes Received:
    2,383
    Trophy Points:
    898
    Joined:
    Jun 18, 2016
    Gender:
    Male
    Occupation:
    Panel Beater, Spray Painter, Custom Fabricator
    Location:
    Adelaide, South Australia
    My Bike:
    Yamaha's , 1990 FZR250R 3LN3 , 1986 XT250TS 57R , 1984 IT200L 43G, 1976 IT400C 510
    There's one on ebay, look's like it could be a modified standard system ?
    It's bit dear though and has no db killer in it either
    https://www.ebay.co.uk/c/13008184414

    It might have had the silencer removed and had a new main pipe made up and welded in

    s-l1600.jpg
     
  6. Andych

    Andych Moderator Staff Member Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,289
    Likes Received:
    2,504
    Trophy Points:
    918
    Joined:
    Oct 6, 2016
    Gender:
    Male
    Location:
    Albury 2641
    My Bike:
    1987 Yamaha SRX250, Honda 1974 SL125 K1, 2022 Triumph Tiger Sport 660
    That pretty much looks like the SRX250 3WP muffler and yep.. it could well have been modified to remove the big silencer underneath removed.
    I will be attempting to make up my own SS headers etc once I have the head etc back and the engine all together.
    that way I can cut and shut and tack it all in place on the bike.
    Should end up considerably cheaper than that one from the US of A
     
  7. Arthur Freeman

    Arthur Freeman Active Member

    Messages:
    9
    Likes Received:
    4
    Trophy Points:
    173
    Joined:
    Feb 20, 2015
    Gender:
    Male
    Location:
    Tyabb, Victoria, Australia
    My Bike:
    1979 Suzuki Gt250EN (X7)
    G'day Frankster - sorry it took a while, but I have put on a couple of pics.
    Cheers, Arthur

    srxexhaust 2.jpg srxexhaust 2.jpg
     
  8. 2valve

    2valve Well-Known Member

    Messages:
    861
    Likes Received:
    352
    Trophy Points:
    348
    Joined:
    Oct 12, 2016
    Gender:
    Male
    Location:
    Glen Innes Australia
    My Bike:
    1985 Yamaha SRX 250
    Any pictures of the whole bike ?
     
  9. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

    Messages:
    3,979
    Likes Received:
    2,207
    Trophy Points:
    923
    Joined:
    Nov 19, 2013
    Gender:
    Male
    Occupation:
    Gardener
    Location:
    Tasmania
    Home Page:
    My Bike:
    Spada, VT250F & ZX2R
    That looks custom. I had one made that looked like that, but it was just a bastardised normal system with the rusty collector removed.
     
  10. Arthur Freeman

    Arthur Freeman Active Member

    Messages:
    9
    Likes Received:
    4
    Trophy Points:
    173
    Joined:
    Feb 20, 2015
    Gender:
    Male
    Location:
    Tyabb, Victoria, Australia
    My Bike:
    1979 Suzuki Gt250EN (X7)
    Yep, bike is standard (except exhaust)

    SRX250 RHS.JPG
     
    • Like Like x 4
  11. Andych

    Andych Moderator Staff Member Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,289
    Likes Received:
    2,504
    Trophy Points:
    918
    Joined:
    Oct 6, 2016
    Gender:
    Male
    Location:
    Albury 2641
    My Bike:
    1987 Yamaha SRX250, Honda 1974 SL125 K1, 2022 Triumph Tiger Sport 660
    Very clean and well looked after bike you have there... the exhaust has been done nicely too. Added bonus that you have the Optional Oil Cooler. They are highly sought after and rare as Rocking Horse Manure.
     
  12. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

    Messages:
    3,979
    Likes Received:
    2,207
    Trophy Points:
    923
    Joined:
    Nov 19, 2013
    Gender:
    Male
    Occupation:
    Gardener
    Location:
    Tasmania
    Home Page:
    My Bike:
    Spada, VT250F & ZX2R
    Very nice example. What Andy said...
     
  13. 2valve

    2valve Well-Known Member

    Messages:
    861
    Likes Received:
    352
    Trophy Points:
    348
    Joined:
    Oct 12, 2016
    Gender:
    Male
    Location:
    Glen Innes Australia
    My Bike:
    1985 Yamaha SRX 250
    Totally agree with the comment's above. Wow , that's one super nice SRX. I bet it sound's good too with no collector box under the engine. Even have Metzeler tyres fitted , i wasn't aware that they where available to suit , i should look into that. As Andych has commented on , those oil cooler's are rare as , iv'e got one in the part's box , just have to get the radiator fin's cleaned up if all possible.
     
    Last edited: Aug 13, 2019
  14. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

    Messages:
    4,313
    Likes Received:
    2,383
    Trophy Points:
    898
    Joined:
    Jun 18, 2016
    Gender:
    Male
    Occupation:
    Panel Beater, Spray Painter, Custom Fabricator
    Location:
    Adelaide, South Australia
    My Bike:
    Yamaha's , 1990 FZR250R 3LN3 , 1986 XT250TS 57R , 1984 IT200L 43G, 1976 IT400C 510
    @Arthur Freeman , how are you going with the tuning of your SRX250 ?
    I saw you posted a couple of comment's in your showcase area


    It sound's like your bike may be running rich in the top end
    I had similar problem's with my XT250 4V, (same engine as the SRX250)
    I found that i needed a leaner main jet, bought 1 size smaller than standard and fitted that.
    It cured the bike from cutting out at high speed when it was at normal operation temp's
    And there's no need to play around with the jetting on the vacuum side of the carby either

    I run all my engine's on 98 too, and each has been tuned to suit
     
    • Like Like x 1
  15. Andych

    Andych Moderator Staff Member Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,289
    Likes Received:
    2,504
    Trophy Points:
    918
    Joined:
    Oct 6, 2016
    Gender:
    Male
    Location:
    Albury 2641
    My Bike:
    1987 Yamaha SRX250, Honda 1974 SL125 K1, 2022 Triumph Tiger Sport 660
    I agree with @my67xr
    A common mistake most people make with aftermarket exhausts is that they feel the need to jet them up... reality is they need to jet down as the engine is able to breath better it pulls through more air which in turn pulls through more fuel but the engine cant handle the extra fuel unless you start altering ignition curve, heads etc.. not easy to do on the SRX... and of little to no benefit really.
    One size down should probably sort it out...
     
    • Agree Agree x 2
    • Like Like x 1
  16. Gpzmax

    Gpzmax Member

    Messages:
    3
    Likes Received:
    7
    Trophy Points:
    13
    Joined:
    Nov 30, 2019
    Location:
    USA
    My Bike:
    1987 Yamaha srx 250
    Hello,
    In these pics, is that an attachment for an oil cooler?
     
  17. Andych

    Andych Moderator Staff Member Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,289
    Likes Received:
    2,504
    Trophy Points:
    918
    Joined:
    Oct 6, 2016
    Gender:
    Male
    Location:
    Albury 2641
    My Bike:
    1987 Yamaha SRX250, Honda 1974 SL125 K1, 2022 Triumph Tiger Sport 660
    • Like Like x 1
  18. 2valve

    2valve Well-Known Member

    Messages:
    861
    Likes Received:
    352
    Trophy Points:
    348
    Joined:
    Oct 12, 2016
    Gender:
    Male
    Location:
    Glen Innes Australia
    My Bike:
    1985 Yamaha SRX 250
    I'm aware that this is a super old post ( 2019 ) , but , wonder where Arthur has gone to.
    Would have been interesting if he solved the running issue in the end.
     

Share This Page