sr 50 3 months old .... somethings melted

Discussion in 'The Workshop' started by chris14, Apr 19, 2008.

  1. chris14

    chris14 New Member

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    331
    well my mates got a brand new sr50 and today took it to a place to derestrict it and he only cut of and welded 1 pipe and sed try that and he will do the rest on monday along wiv the variator for sum reaon,


    anyway seemed better acceleration till it went reli loud and i expected it would be manifold gasket but then i noticed this thing all melted.

    not my mates bike just a pic i found but any1 no what it is or is for ?
    [​IMG]
     
    chris14, Apr 19, 2008
    #1
  2. alex_1966

    alex_1966 New Member

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    1,231
    cant really see clearly from the picture mate , could you get a close up
     
    alex_1966, Apr 19, 2008
    #2
  3. alexsr70

    alexsr70 New Member

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    2,039
    if it has the standard exhaust on it and that is connected to it then replace it or remove it and weld the exhaust. if it has a 'sports pipe' then just remove it because its not needed
     
    alexsr70, Apr 19, 2008
    #3
  4. chris14

    chris14 New Member

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    well its a atanderd pipe and today the man only cut and welded 1 pipe so why has it made that melt do u thimk well opefully hell get it sorted 2moz anyway.

    is it a restricror to wer all the pipes go to?
     
    chris14, Apr 19, 2008
    #4
  5. alex_1966

    alex_1966 New Member

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    sr's are only restricted in the exhaust and varitator , cdi to if its the injection model
     
    alex_1966, Apr 19, 2008
    #5
  6. chris14

    chris14 New Member

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    331
    yhhhh....
    the exhaust has got like 3or 4 pipes cumin from it witch then all go on to rubber pipes witch go into that blak box so i imagine when u derestrict it u dont need that anymore:confused:?
     
    chris14, Apr 19, 2008
    #6
  7. MiNoR cOnFuSiOn

    MiNoR cOnFuSiOn Administrator Staff Member

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    the box is the cat.. its basicly a one way valve that FEEDS the exhaust fresh air to mix with burnt gasses.. this brings the % of hydrocarbons down to the acceptable levels of this day and age (its percentage of hydrocarbons in air not the ammount, 2l engines produce a fuckload more than any tuned engine)

    anyway, you need no pipes in or out of the exhaust. anything that has been connecxted to the pipe will no longer be needed so can be unbolted or just ignored..
     
    MiNoR cOnFuSiOn, Apr 19, 2008
    #7
  8. chris14

    chris14 New Member

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    ok cheers for that ill tell him

    why do u think its melted thoo ?
    any 1 ever had this problem before
     
    chris14, Apr 19, 2008
    #8
  9. MiNoR cOnFuSiOn

    MiNoR cOnFuSiOn Administrator Staff Member

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    ye, only when the one way valve is removed.. air flows inwards down there but not out. if the little reed from the cat is removed air comes out so it warms up like mad.. remove and block the pipe feeding it. (exhaust end obviously.. bang a huge bolt in the rubber section linking the lot together)
     
    MiNoR cOnFuSiOn, Apr 19, 2008
    #9
  10. alex_1966

    alex_1966 New Member

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    de-restriced exhaust produced more exhaust gases than it could handle , got to hot and melted maybe
     
    alex_1966, Apr 19, 2008
    #10
  11. alex_1966

    alex_1966 New Member

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    id just remove it if i was you , it probly decreases performance slightly
     
    alex_1966, Apr 19, 2008
    #11
  12. chris14

    chris14 New Member

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    yh well removed now and pipes chopped and welded and is much better
     
    chris14, Apr 19, 2008
    #12

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