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Thread: 85mm stroke crank, need help

  1. #1
    apriliaforum Junkie
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    85mm stroke crank, need help

    Did a full engine repair for my SR. When putting all together and installing cylinder I noticed.... fudge. THEY SENT ME THE WRONG CRANK WITH 85MM STROKE!

    I really do not want to go all the trouble and do it all over again so:

    Do they sell some adapters that go under the cylinder, between the block and cylinder I mean?

    or

    Do I have to order a new cylinder with large capacity.

    or

    Any other ideas?
    Aprilia SR 50 2008 Silver Crowd
    Aprilia RS 50 2003 SBK Replica

  2. #2
    apriliaforum expert
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    you need the spacer or return it.

    wich pipe/cyl/carb?
    --- diploma for engine repair in 2012 ---

    derbi bullet 2006 - piaggio AC - malossi T.C. half - custom GPS dash - TPR 70CC - topperf crank - vl13 reed and spacer- yamaha rt180 kickstand - giannelli shotV4 - phbg 21mm - doppler mesh top venturi filter

    complete wtp volta bmx 2012 - sanko seamless japanese cromoly heat treated and blue printed frame - 21lbs

    1992 lt250r suzuki quadracer - maier plastics -chromed shearer pipe - chromed works suspension - ++++++++ - 220lbs

    previous vehicles - subaru legacy turbo 1991 - mazda mx6 turbo 1990.

  3. #3
    apriliaforum Junkie
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    The idea was to make it complete stock. So everything is stock in the motor. I replaced crank, bearings, seals, waterpump, oilpump etc. Hope all for nothing

    Feeling quite fustrated and stupid now to be honest. But the difference between the stroke isnt that much when compared to stock so it didnt point out when I installed it. All I did notice that it was much heavier.

    Do you have an idea where do they sell them in european stores?
    Aprilia SR 50 2008 Silver Crowd
    Aprilia RS 50 2003 SBK Replica

  4. #4
    apriliaforum expert
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    ok so u got the s6 full circle crank? they have a spacer to make it work on sport cylinders. but perhaps a stock crank will be easier.

    i think but you have been here a while allready. why cant you find a scooter parts place with free shipping? what is wrong with the 5 big stores in europe?

    just start buying the topperformances parts and post here to get a second opinion. topperf has stock cranks for a decent price maybe 60eur as a guess.

    ---

    topperf has a website and they sell direct aswell.
    --- diploma for engine repair in 2012 ---

    derbi bullet 2006 - piaggio AC - malossi T.C. half - custom GPS dash - TPR 70CC - topperf crank - vl13 reed and spacer- yamaha rt180 kickstand - giannelli shotV4 - phbg 21mm - doppler mesh top venturi filter

    complete wtp volta bmx 2012 - sanko seamless japanese cromoly heat treated and blue printed frame - 21lbs

    1992 lt250r suzuki quadracer - maier plastics -chromed shearer pipe - chromed works suspension - ++++++++ - 220lbs

    previous vehicles - subaru legacy turbo 1991 - mazda mx6 turbo 1990.

  5. #5
    apriliaforum Junkie
    Join Date
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    Location
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    Placed an order on the spacer kit. Hope it works. The crank is motoforce evolution 85mm. Dont know if its full circle.

    I would have bought the 87cc tp kit but then i would end up opening cases anyhow cause those bbk need some milling go do on the cases to make them fit.
    Aprilia SR 50 2008 Silver Crowd
    Aprilia RS 50 2003 SBK Replica

  6. #6
    apriliaforum expert
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    ok. so your putting in a new crank/bearings/seals? got the spacer....

    what else. cyl/carb/pipe/reed/clutch/vario ?

    anyway i feel like perhaps we should discuss your setup...
    --- diploma for engine repair in 2012 ---

    derbi bullet 2006 - piaggio AC - malossi T.C. half - custom GPS dash - TPR 70CC - topperf crank - vl13 reed and spacer- yamaha rt180 kickstand - giannelli shotV4 - phbg 21mm - doppler mesh top venturi filter

    complete wtp volta bmx 2012 - sanko seamless japanese cromoly heat treated and blue printed frame - 21lbs

    1992 lt250r suzuki quadracer - maier plastics -chromed shearer pipe - chromed works suspension - ++++++++ - 220lbs

    previous vehicles - subaru legacy turbo 1991 - mazda mx6 turbo 1990.

  7. #7
    apriliaforum Junkie
    Join Date
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    No need. All stock with complete rebuild.
    Aprilia SR 50 2008 Silver Crowd
    Aprilia RS 50 2003 SBK Replica

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