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Thread: cilinder kit port maps

  1. #16
    apriliaforum Member
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    once you go to 205 on ex port you need all the comp you can get

    hebo 3 pipe is outdated ,try one of fat designs ..

  2. #17
    apriliaforum Junkie scootertrog's Avatar
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    cilinder kit port maps

    Cool stuff, beyond my tuning experience but I'm learning. I have a new Airsal T6 and will trace/post it.

  3. #18
    apriliaforum Junkie scootertrog's Avatar
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    cylinder kit port maps

    Sorry it took so long, but here's a port map of the Airsal T6 (72cc)

    O.K....So how do you get the attachment to show up???
    Last edited by scootertrog; 09-16-2003 at 10:17 AM.

  4. #19
    apriliaforum newb Slash's Avatar
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    I have one sr 50 with minarelli motor and 1 year ago I kited my bike...i buy a HEBO cilinder and the rest of the kit is polini...the bike is more faster but is also more problematic...last resivion cost 216...
    Aprilia rullez!

  5. #20
    apriliaforum Junkie scootertrog's Avatar
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    Micah,
    How come my attachment isn't showing up?

  6. #21
    apriliaforum expert Modular Overrev's Avatar
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    here's another portmap, this time it's from a Yamaha Jog scooter which i ported to PRO RACE specs i'll try to post a stock untuned 50cc cilinder when i get my hands on it. this cilinder is tuned for very high rpm drag racing so 14,000 is the nominal rpm i'm striving for.

    port durations are the wildest i've ever made so far so i hope this cilinder works or i have just wasted countless hours of porting & not to mention loads of money for machining & new oversized piston kit.
    Last edited by Modular Overrev; 09-28-2003 at 04:24 AM.
    JDM 2004 Honda CBR600RR
    Akrapovic Evo full system PC III USB WP 4618 rear shock WP 1508 steering damper Ohlins 0,90 kg/mm fork springs Overrev tuned cartridges Brembo 19 RCS HEL brakelines PF front pads & SBS rear pads DID ERV3 520 chain 15/47 AFAM sprocket Robby Moto quick throttle Euro racing riser plates

    2004 Yamaha Aerox R
    Yasuni C21 MHR Team 6T 70cc kit MHR Team crank Stage6 crank bearings PVL inner rotor ignition Keihin PWK28 carb Malossi VL12 reevalve KOSO manifold Polini Evo SS9 vario Malossi ventilvar Bando belt Polini 128mm rear pulley Malossi Delta clutch Malossi Wingbell Polini 15/42 gear kit Malossi RS24 rear shock Aprilia Rally 12" wheels Bridgestone Racing Battlax tires

  7. #22
    apriliaforum expert Modular Overrev's Avatar
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    the first pic i uploaded didn't come well so i just deleted the file and made up a new one. i hope it's goes ok this time.
    Attached Images Attached Images  
    JDM 2004 Honda CBR600RR
    Akrapovic Evo full system PC III USB WP 4618 rear shock WP 1508 steering damper Ohlins 0,90 kg/mm fork springs Overrev tuned cartridges Brembo 19 RCS HEL brakelines PF front pads & SBS rear pads DID ERV3 520 chain 15/47 AFAM sprocket Robby Moto quick throttle Euro racing riser plates

    2004 Yamaha Aerox R
    Yasuni C21 MHR Team 6T 70cc kit MHR Team crank Stage6 crank bearings PVL inner rotor ignition Keihin PWK28 carb Malossi VL12 reevalve KOSO manifold Polini Evo SS9 vario Malossi ventilvar Bando belt Polini 128mm rear pulley Malossi Delta clutch Malossi Wingbell Polini 15/42 gear kit Malossi RS24 rear shock Aprilia Rally 12" wheels Bridgestone Racing Battlax tires

  8. #23
    apriliaforum Member
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    tiba its not radical except for square exhaust port and width

    i got 50cc cylinders with ex port raised so much it broke out of fins and holed !

    i cut the fins out and welded the hole then rewelded the fins back on !

    i got a cylinder with ex port 17mm from top with transfers 28mm from top with squish so tight piston putting impresion mark on cylinder , timing retarded so much it dont even pull below 11000 rpm , we run them with 17/31 gears on big track so there is some lag at start but after that it flys

  9. #24
    apriliaforum expert Modular Overrev's Avatar
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    ip2,

    that's why i kept it below 18mm ex port ht. i hate to weld a cilinder so i made my timings a bit conservative so i can raise it a bit later when needed.

    maybe if i get another cilinder i'll try a more radical port spec. you use TJT pipes on the 50 too?

    BTW it's good to know you have some use for the 17/31 gears i sent you, have you used the Malossi primary gears yet on the EVO 70?
    JDM 2004 Honda CBR600RR
    Akrapovic Evo full system PC III USB WP 4618 rear shock WP 1508 steering damper Ohlins 0,90 kg/mm fork springs Overrev tuned cartridges Brembo 19 RCS HEL brakelines PF front pads & SBS rear pads DID ERV3 520 chain 15/47 AFAM sprocket Robby Moto quick throttle Euro racing riser plates

    2004 Yamaha Aerox R
    Yasuni C21 MHR Team 6T 70cc kit MHR Team crank Stage6 crank bearings PVL inner rotor ignition Keihin PWK28 carb Malossi VL12 reevalve KOSO manifold Polini Evo SS9 vario Malossi ventilvar Bando belt Polini 128mm rear pulley Malossi Delta clutch Malossi Wingbell Polini 15/42 gear kit Malossi RS24 rear shock Aprilia Rally 12" wheels Bridgestone Racing Battlax tires

  10. #25
    apriliaforum Member
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    yes using TJT on 50cc too , they are very peaky with power starting at 11000 and lag badly at start with tall gearing .. remind you we are running 215 on exhaust with stock pulies

  11. #26

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