yx 150cc and yx160 crankshafts

Discussion in 'Ask the Tech Masters???' started by Jonte, Apr 27, 2015.

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  1. Apr 27, 2015 #1

    Jonte

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    Hello!

    Is it possible to fit yx150 crankshaft to yx160 bottom end? Yeah, i know that yx150 have 53mm stroke, but i have heard that it have 2mm longer rod and both of them are klx-type.
     
  2. Apr 27, 2015 #2

    xLOCOx

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    it sure is, make sure theyre the width, as it is possible to purchase a oil spinner type, i run the ooracing crank "57mm" as i bought a motor not realising it had a blown crank, also inspect the casings when you remove the original, as yx's are known for cracking casings around the crank bearing, (this is caused by over reving a non balanced crank)
    cheers Loco
     
  3. Apr 27, 2015 #3

    motorman

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    I have a full YX184 motor with TB and taky bits plus a spare bottom end for sale as well.

    PM me if your keen.
     
  4. Apr 28, 2015 #4

    my67xr

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  5. Apr 28, 2015 #5

    Jonte

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    Okay thanks guys. :)

    Yeah the postages would be little bit expensive to Finland, but thanks anyway motorman. :D
     
  6. Apr 29, 2015 #6

    Jonte

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    How about zongshen 155cc crankshaft, can i put it in yx160 bottom end?
     
  7. Apr 29, 2015 #7

    my67xr

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    Depend's on what model YX engine you have, pic's might help ?
    Also depend's on which Z155 too, early of late
     
  8. Apr 29, 2015 #8

    Jonte

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    I have gen3 yx, without oilslinger. Crankshaft is from that kind of engine.

    [​IMG]
    [​IMG]
     
  9. Apr 29, 2015 #9

    my67xr

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    That engine is a Z160Ho 55mm stroke 60mm bore and the bike looks to be a direct copy of the Pitsterpro LXR
     
  10. May 1, 2015 #10

    Jonte

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    But does the z160ho crank fit to yx160 bottom end?
     
  11. May 2, 2015 #11

    my67xr

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    Pretty sure they do, but i don't have them both apart to compare.
    So why are you wanting to put a shorter stroke crank in ?
     
  12. May 4, 2015 #12

    chase033

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    They do, we use YX 57mm 155HO cases for big motor builds

    I recommend the Bucci 53/57mm cranks [​IMG]

    Artwork
     
  13. Mar 3, 2020 #13

    Luke918273

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    I know it’s been a while since someone last replied in this thread but any chance I can fit just the yx160 cylinder on a yx150 and make it close to 160cc?
     
  14. Mar 3, 2020 #14

    cieb

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    Yx 160 and yx 150 have the same bore (60mm).
    So if you put a yx cylinder 160 on a yx 150 you will have the same engine diplacement. (if using oem cylinder).

    Unless you have a bigger cylinder!??
     
  15. Mar 4, 2020 #15

    Luke918273

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    I have a parts yx160 engine and a running yx150 in my pit bike, so it’ll make no difference you think?
     
  16. Mar 4, 2020 #16

    cieb

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    No difference.
    The increase in cc between 150 yx and 160 yx is made by strocker crank, not by biggest bore.
     
  17. Mar 4, 2020 #17

    Luke918273

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    Cheers for the help mate
     
  18. Mar 5, 2020 #18

    cieb

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