De-restricted, sports exhaust, Still going 40mph..Why??

Discussion in 'The Workshop' started by jimmytyph, Aug 25, 2009.

  1. jimmytyph

    jimmytyph New Member

    Messages:
    105
    My cousin’s zip 50 is only going 40mph maybe 45 downhill and it’s got a malossi sports exhaust and a 60 jet. That’s the only mods.

    I don't understand why it’s going so slow.
     
    jimmytyph, Aug 25, 2009
    #1
  2. BlackHawk

    BlackHawk New Member

    Messages:
    65
    1) Has it had new rollers and clutch springs?

    2) what size was the original jet?

    3) Malossi exhausts are not made for standard bores <<<ERROR
     
    BlackHawk, Aug 25, 2009
    #2
  3. MiNoR cOnFuSiOn

    MiNoR cOnFuSiOn Administrator Staff Member

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    the mhr rep realy aint made for anything but a stock cylinder LOL i wouldent use one on an iron kit, there poo... but on stock there ok.

    rollers will be the prob as hawk said..
     
    MiNoR cOnFuSiOn, Aug 25, 2009
    #3
  4. BlackHawk

    BlackHawk New Member

    Messages:
    65
    Didn't realise the MHR rep was for stock, always learning ;)
     
    BlackHawk, Aug 25, 2009
    #4
  5. MiNoR cOnFuSiOn

    MiNoR cOnFuSiOn Administrator Staff Member

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    look at one close when you next get the chance... there SO shit (the front section is literally a bent tube)
     
    MiNoR cOnFuSiOn, Aug 25, 2009
    #5
  6. jimmytyph

    jimmytyph New Member

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    105
    alright i will try some heavier rollers and see what happens.

    What rollers would you recommend.
     
    jimmytyph, Aug 26, 2009
    #6
  7. BlackHawk

    BlackHawk New Member

    Messages:
    65
    Get a box of rollers to find the right size

    Stage6, BGM etc. do boxes
     
    BlackHawk, Aug 26, 2009
    #7
  8. MiNoR cOnFuSiOn

    MiNoR cOnFuSiOn Administrator Staff Member

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    they maty not be heavier.. theres a roller guide. read it, then buy some rollers (not just one set) you WILL use them all some day
     
    MiNoR cOnFuSiOn, Aug 26, 2009
    #8
  9. jimmytyph

    jimmytyph New Member

    Messages:
    105
    I have changed the rollers with 7 gram rollers. Before there was 5 gram rollers in there. But it is still the same, exactly the same on acceleration and top end speed.
     
    jimmytyph, Aug 29, 2009
    #9
  10. MiNoR cOnFuSiOn

    MiNoR cOnFuSiOn Administrator Staff Member

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    then they were too heavy in the first place...

    is the exhaust derestricted?
     
    MiNoR cOnFuSiOn, Sep 1, 2009
    #10
  11. star-172

    star-172 New Member

    Messages:
    763
    Rides:
    Donkey
    Is the zip itself still restricted, The restrictor infront of the variator ??
     
    star-172, Sep 12, 2009
    #11

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