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Heads and Cylinders

All about your porting, compression, rings, cylinder and piston modifications to your bicycles engine

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  1. Sticky Threads
  2. BarelyAWake
    Sticky

    The Basics, Port & Polish and Port Matching

    BarelyAWake, Mar 20, 2010 ... 3 4 5
    Replies:
    98
    Views:
    103,136
    Porting newb
    Porting newb
    Jul 15, 2015
  3. Normal Threads
  4. rohmell

    Cylinder Head Lapping Question

    rohmell, May 14, 2011
    Replies:
    18
    Views:
    6,573
    kelly dean
    kelly dean
    Mar 30, 2020
  5. Adam E

    3rd transfer port plz help

    Adam E, Mar 20, 2020
    Replies:
    9
    Views:
    176
    Adam E
    Adam E
    Mar 20, 2020
  6. BenchDweller

    Are CDH Power performance heads any good?

    BenchDweller, Jan 24, 2020
    Replies:
    0
    Views:
    253
    BenchDweller
    BenchDweller
    Jan 24, 2020
  8. lewdog7431

    New cylinder type

    lewdog7431, Nov 9, 2019 ... 2 3
    Replies:
    46
    Views:
    1,945
    kelly dean
    kelly dean
    Jan 17, 2020
  9. breath_easy13

    How to remove governor and oil sensor on Predator 212

    breath_easy13, Jan 6, 2020
    Replies:
    2
    Views:
    1,173
    breath_easy13
    breath_easy13
    Jan 6, 2020
  10. javy mcdees

    heads and cylinders after 3000 miles

    javy mcdees, Jun 7, 2019
    Replies:
    9
    Views:
    816
    javy mcdees
    javy mcdees
    Sep 28, 2019
  11. Jurney

    oil on top of cylinder head

    Jurney, Sep 23, 2019
    Replies:
    2
    Views:
    305
    Jurney
    Jurney
    Sep 24, 2019
  12. exokinetic

    What Compression Reading Should I Get?

    exokinetic, Apr 24, 2016
    Replies:
    7
    Views:
    4,825
    lewdog7431
    lewdog7431
    Sep 8, 2019
  13. Alberto Gaytán Martínez

    Scratched cylinder and piston?

    Alberto Gaytán Martínez, May 3, 2019
    Replies:
    4
    Views:
    481
    Greg58
    Greg58
    May 4, 2019
  14. chmn22s

    what size cc now

    chmn22s, Sep 24, 2018
    Replies:
    3
    Views:
    615
    chmn22s
    chmn22s
    Apr 23, 2019
  15. ronin62715sv

    Cylinder Porting

    ronin62715sv, Jul 17, 2018
    Replies:
    7
    Views:
    1,600
    javy mcdees
    javy mcdees
    Mar 19, 2019
  17. Bikeguy Joe

    Transfer Port Modification- Pictures and results here.

    Bikeguy Joe, Feb 5, 2009 ... 10 11 12
    Replies:
    238
    Views:
    84,128
    javy mcdees
    javy mcdees
    Mar 19, 2019
  18. lewdog7431

    broken rings

    lewdog7431, Feb 19, 2019
    Replies:
    4
    Views:
    384
    Venice Motor Bikes
    Venice Motor Bikes
    Feb 19, 2019
  19. jrok96

    dio reed porting results

    jrok96, Nov 18, 2018
    Replies:
    3
    Views:
    934
    jrok96
    jrok96
    Nov 21, 2018
  20. doomedgame

    GT90 Conversion Kit

    doomedgame, Sep 25, 2017
    Replies:
    7
    Views:
    2,336
    John420jones
    John420jones
    Nov 5, 2018
  21. Metalhead6969

    Low hole piston vs. high hole piston

    Metalhead6969, Oct 29, 2018
    Replies:
    1
    Views:
    744
    Venice Motor Bikes
    Venice Motor Bikes
    Oct 29, 2018
  22. carl clack

    Porting First Time No Problem?

    carl clack, Jun 29, 2018
    Replies:
    0
    Views:
    800
    carl clack
    carl clack
    Jun 29, 2018
  23. Flathead

    Head gaskets

    Flathead, Jan 10, 2016
    Replies:
    18
    Views:
    3,371
    Inf3ct3d89
    Inf3ct3d89
    Jun 20, 2018
  24. rogergendron1

    top end mods to stock part for more power !!!

    rogergendron1, Oct 12, 2013 ... 2
    Replies:
    21
    Views:
    11,767
    Rstar23
    Rstar23
    Jun 14, 2018
  26. Mouse

    Big jugs

    Mouse, Jan 28, 2016
    Replies:
    14
    Views:
    5,205
    Mouse
    Mouse
    Apr 29, 2018
Showing threads 1 to 20 of 430

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