Harry Klemm - GroupK
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Threads 1 to 30 of 761

Forum: Harry Klemm - GroupK

PWC advice, by Harry Klemm, Owner of GroupK, a professional aftermarket high performance Jetski shop

  1. Dual Carb Intake Cross Over Tube

    Started by MrSki, 02-17-2009 01:05 PM
    35 Pages
    1 2 3 ... 35
    • Replies: 348
    • Views: 27,021
    02-25-2013, 10:28 AM Go to last post
  2. Ask Harry Klemm from Group K

    Started by Rob, 10-28-2004 07:54 PM
    30 Pages
    1 2 3 ... 30
    • Replies: 299
    • Views: 29,556
    12-20-2005, 08:50 PM Go to last post
  3. The National Parks and Super Jets

    Started by Group K, 02-24-2013 11:19 AM
    10 Pages
    1 2 3 ... 10
    • Replies: 97
    • Views: 18,139
    07-22-2015, 05:32 PM Go to last post
  4. SXR 849 Big Bore

    Started by Group K, 12-14-2006 11:16 AM
    10 Pages
    1 2 3 ... 10
    • Replies: 93
    • Views: 8,323
    01-18-2007, 01:03 PM Go to last post
  5. yamaha 89mm pistons

    Started by bad93blaster, 10-17-2007 07:54 PM
    9 Pages
    1 2 3 ... 9
    • Replies: 84
    • Views: 12,764
    02-18-2011, 09:09 PM Go to last post
  6. Fuel Reversion...Revisited

    Started by MrSki, 11-18-2009 12:13 AM
    9 Pages
    1 2 3 ... 9
    • Replies: 82
    • Views: 8,705
    06-27-2012, 08:26 PM Go to last post
  7. 951 in sxr800 hull! what do you think?

    Started by titusvillesonlysxr800, 07-16-2007 12:05 AM
    6 Pages
    1 2 3 ... 6
    • Replies: 55
    • Views: 7,650
    08-01-2008, 06:07 PM Go to last post
  8. 750sx

    Started by timothy, 05-28-2012 11:34 PM
    6 Pages
    1 2 3 ... 6
    • Replies: 50
    • Views: 4,248
    08-26-2012, 12:46 AM Go to last post
  9. 98 GP1200 Spec II running at 58

    Started by smitch022002, 07-13-2006 08:36 PM
    3 Pages
    1 2 3
    • Replies: 25
    • Views: 1,904
    07-23-2006, 03:25 PM Go to last post
  10. 650 groupk ported cylinder - sj

    Started by VegasRider, 07-30-2007 09:07 PM
    3 Pages
    1 2 3
    • Replies: 23
    • Views: 3,051
    08-11-2007, 09:41 PM Go to last post
  11. Carb Boring - Not Impressed!!

    Started by MedicMoose, 05-29-2013 09:28 PM
    3 Pages
    1 2 3
    • Replies: 23
    • Views: 12,848
    03-22-2016, 12:06 PM Go to last post
  12. SXR bog?

    Started by RAY, 07-10-2006 09:03 PM
    3 Pages
    1 2 3
    • Replies: 22
    • Views: 1,994
    07-20-2006, 05:44 PM Go to last post
  13. Tech Basics for SXR 900 & 1100 conversions

    Started by Group K, 10-20-2010 01:12 PM
    3 Pages
    1 2 3
    • Replies: 22
    • Views: 7,040
    04-01-2011, 02:00 AM Go to last post
  14. Realistic Expectations - a bit long but interesting

    Started by Group K, 11-16-2006 01:54 PM
    3 Pages
    1 2 3
    • Replies: 21
    • Views: 2,899
    12-04-2006, 02:12 PM Go to last post
  15. Group K carb circuit upgrade

    Started by SharkB8, 11-02-2008 07:37 PM
    3 Pages
    1 2 3
    • Replies: 21
    • Views: 3,268
    12-07-2008, 10:32 PM Go to last post
  16. 96 big pin 750sx bent rod

    Started by ak jetski, 01-21-2008 11:53 AM
    3 Pages
    1 2 3
    • Replies: 20
    • Views: 3,277
    02-14-2008, 12:25 AM Go to last post
  17. 900/1100 questions

    Started by Brad Clarke, 11-16-2009 03:25 AM
    3 Pages
    1 2 3
    • Replies: 20
    • Views: 5,007
    06-20-2011, 06:18 PM Go to last post
  18. 785 Tech Articles

    Started by Radical337, 02-01-2006 03:38 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 2,274
    02-15-2006, 12:09 PM Go to last post
  19. reed spacers or stuffers on an SXR

    Started by RAY, 12-24-2007 03:57 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 4,019
    03-02-2008, 04:32 PM Go to last post
    • Replies: 19
    • Views: 11,736
    10-21-2014, 10:51 AM Go to last post
  20. About Racing CDIs

    Started by Group K, 03-16-2018 12:12 PM
    2 Pages
    1 2
    • Replies: 18
    • Views: 1,960
    09-04-2018, 09:01 PM Go to last post
  21. Dual 44 blackjacks 771 61x

    Started by Asmbandits, 09-17-2012 11:49 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 2,877
    09-20-2012, 01:18 AM Go to last post
  22. Yamaha superjet options

    Started by accbr, 11-15-2006 08:25 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 2,185
    11-18-2006, 02:21 PM Go to last post
  23. Thermal Coating on Pistons/Domes

    Started by a1965gt, 05-07-2006 01:11 AM
    2 Pages
    1 2
    • Replies: 15
    • Views: 1,866
    05-10-2006, 01:29 AM Go to last post
  24. intake crossover on 550's

    Started by TeamCassLake, 05-13-2006 02:08 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 1,571
    05-26-2006, 07:03 PM Go to last post
  25. any testing done with poor man's race fuel

    Started by jetski9010, 02-18-2009 06:49 AM
    2 Pages
    1 2
    • Replies: 15
    • Views: 4,409
    09-16-2009, 02:17 PM Go to last post
  26. SXR 849 or Factory Wet Pipe?

    Started by Dano 7, 10-11-2009 07:42 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 5,823
    05-17-2010, 05:50 PM Go to last post
  27. Dual 44mm Carbs on Superjet

    Started by Doug997, 06-21-2014 02:47 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 8,239
    04-25-2018, 09:37 AM Go to last post
  28. Goatcher's 1993 Pro Mod 550

    Started by rowdy925, 03-05-2010 01:56 AM
    2 Pages
    1 2
    • Replies: 14
    • Views: 3,273
    03-17-2010, 04:23 PM Go to last post
  29. Big pin 750 in a 550sx hull?

    Started by Pushrod, 03-15-2013 11:12 AM
    2 Pages
    1 2
    • Replies: 14
    • Views: 2,691
    06-24-2013, 02:42 PM Go to last post

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