- Compression testing
- 550 westcoast mod
- 1100 Exhaust Port clean up
- Goatcher's 1993 Pro Mod 550
- Engine sealing question?
- Piston ring eng gap on Hammer 701
- ecu reflashing and high performance pwc
- 650sx 105 build cost
- 750 PJS head damage... can it be re-cut?
- Holeshot and midrange accel.
- Prop
- Seadoo 787 sleeper ?
- SXR Hammer Base Gasket
- offshore raing.?
- Port matching 61x cylinders
- acceptable bore taper in yamaha twin?
- harry im sending u my motor
- Fuel Reversion...Revisited
- 900/1100 questions
- 550
- Piston/cylinder clearance ona Yamaha superstocker
- kawi 750xi cyldiner porting
- Wb2 1200
- 98 951 xpl silver..
- Tigershark 650 head
- is this true...
- westcoast impellers
- jetting
- Bought used ski, how can I tell if group K parts?
- Polaris 780 performance mods
- SXR 849 or Factory Wet Pipe?
- SJ Drive Line
- sxr 800 carbs
- Sleeved 750 cylinder
- Porting/Polishing Question. +Much More
- Coil Question ???
- Group K Back Up & Running from the storm
- Tornado Damage at Group K
- 650sx impeller...
- sxr waterbox
- GroupK 850 SXR Big Bore kit question.
- Proper Squish clearance
- 760 wb 2
- weight off a lightened 750 kawi flywheel?
- Question for Harry
- carb jetting 08 SJ?
- 701 wave blaster
- 720 rotax starter on but motor not running
- Greater performance 701 head O-rings ? PLEASE HELP
- Carb question
- Air Filter Jetting question
- 850 big bore tuning
- wb2 protec pipe getting hot
- carb replacement
- 44mm carb on 650sx
- backflushing
- 845 in Kawasaki X2
- Yamaha 845 big bore
- CDK II Help??
- Ultra 150 Carb Maintenance?
- Mod stock carbs, 46mm or 48mm Novi's
- Need Input on a Group K Motor
- sxr850
- xl1200ltd xlt1200 to a group k 1390
- Feedback for GroupK
- 650 open superjet
- Factory b pipe
- Group K motors
- wb2 mods
- Group K - Fuel filter setup
- 750/650 timing
- Mikuni 40's re-worked by NOVI to dual 42's problems
- Look Out I'm Hammered
- Stroker Cranks
- 1991 Waverunner LX 650 starting problems
- 6m6 case can they support big bore?
- Another SBN jetting thread
- tuning and jet increments
- Js550 help...
- anything to gain on dual 42 keihins on a 750 bigbore?
- Group K 753 Big Bore cylinder jetting
- K650 case porting
- Group K 61x
- Current single-carb recommendations
- Dry vs Wet torque specs
- Lime Green Head
- SXR Crank True & Weld
- sxr dry pipe
- SXR Sleeper jetting specs
- pressure test kit
- Turn Around Time?
- piston size
- 787 deto head ?
- Horsepower estimate big bore 850
- superjet seize
- Big Bore SXR Lites Pistons
- porting and boreing
- 91 650 x2 jet ski
- 91 650 x2
- 12 psi gain per each .0010 milled off ?
- 42 novi jetting?
- av gas
- engine assembly
- Pulling cylinder for 850 mod and porting
- Malcom Smith is My New Biggest Hero
- 96 xp carbs for a 96 hx
- Crankshaft Rebuilding Questions
- Which Cylinder for Lites
- 1999 gsx ltd
- A/F separator 750 MRD application
- Larger diameter couplers decrease pump-load to the engine?
- Info on head for a 1020
- Kawi 650 header pipe
- 28cc domes on my sxr
- stxr shaved heads...prices
- 750 Machine Work
- any testing done with poor man's race fuel
- Dual Carb Intake Cross Over Tube
- turn around time for 701 upgrade
- boring exhaust manifold and head pipe
- 650sx w/ Factory pipe - Solas Spyder KA6
- midshaft heat
- 750sx cyl vs SXR cyl
- Group K sleeper w/Coffman PIpe XPL
- porting? seadoo
- Over sized impellers...?
- piston? on sleeper kit
- 08 Superjets in lites class
- Advent ignition on an SXR Hammer 1
- From Big Bore to Hammer
- 650sx cylinder
- 850cc SXR w/ wetpipe questions
- Half inch cooling or Dual cooling???
- Question about Group K porting
- Large ports, low compression build...
- repairing pitted head domes
- How to tell if groupk work has been done
- Superjets cracking cylinders - preventative measures
- need help please
- Group K intake manifold mod
- SJ 845 Big Bore Kit
- SeaDoo HX questions?
- harry......
- Group K carb circuit upgrade
- Gp 1200 r build
- cases drilled
- Wet Jet 61x (tall one) Westcoast ?
- Blaster dual 38 mikuni set up
- Pop off too low on my dual 44 SBN setup...
- Group K is off to the World Finals
- Porting 66v cylinders after replating?
- Search wiring diagram 800 SX-R with dc cdi
- 48 novi's on singal pipe stxr
- 650 to 701 Carb ???s
- Piston/Ring Clearence Wiseco 83.00mm 750 sx
- JS 300 hull - dropping in a 650cc
- 845cc IJSBA Limited Class Super Jets
- Misc GroupK questions...
- SuperJet 701 Sleeper - compression > 180?
- full circle cranks
- Bore first, then Sleeper? Or vise-versa.
- How to check superjet timing
- SXR 849cc Pistons
- Question for Harry
- Question about 785 porting
- 845cc SuperJet Freestyle Tech Info
- 785 "sleeper kit" pipe questions.......
- SXR Hammer differences
- Harry, Qs-Winter build. Porting of my 650 x2-
- Motor Build
- Need Help
- 93 550sx with mods..Popoff question
- 62T/61X aftermarket reeds and OE cage
- Super Jet question
- 2001 Stock Yamaha GP1200R (water bypassing ?)
- IJSBA SXR 849 Stock Class "Upgrade"
- 550 sx
- Yamaha waveblaster800 mods
- Any Freestylers going to APBA LB Spring National??
- Yamaha 65U & 63M
- How to determine cause of slight bog
- Vilder Ignition
- Jetting help
- Question for Harry Klemm
- "Formula 650" engine mods
- Cutting 760 stock head for 85mm flat tops?
- superjet jetting question
- Yamaha 1100 upgrade help
- 650sx help
- Enhancer or No Enhancer!
- SJ play ski whats next?
- How far can I safely bore a twin Yamaha Cylinder???
- modified triple 38 mikuni Jetting
- 00'rx 951 transition
- 750 Base Gasket OEM or Copper?
- superjet bog
- 750 SX factory pipe cooling line question
- SXR 2003/2006 electronics
- ocean pro 650 cyl
- 750 head fit a 650
- 750 sxi/800sxr
- Cylinder difference/preference
- Jetting starting point for SBN38 on 440
- sent you an e-mail
- GroupK Seadoo Exhaust plumbing kit
- Any idea on the length differences of Kawasaki Driveshafts?
- SBN 44 Jetting for a JS440
- 787 head mod compression
- Nozzle boring
- Hammer 1 SX-R ?
- Big Pin / SXR cylinder porting
- 650sx nozzle bore
- The wheel that makes it fly.
- Curious on your jetting recommendations
- Stock '99 gp800 Yamaha Premix Question
- ? on 787 sleeper
- jetting help on a bigbore
- Kawa 750 piston ring gaps
- 550 engine prices
- 96 big pin 750sx bent rod
- 800 pv in sj
- spark plug gap / and fuse ?
- Fx1 carbs
- reed spacers or stuffers on an SXR
- superjet #s
- Big Pin vs Small Pin Single Carb
- piston clearance
- 550/650 conversion ski
- What is this?
- 550 coffamn pipe?
- 1390 Bb
- SXR set up
- Resleeve
- blaster1
- seadoo sleeper?
- FLywheel?
- 66E YAM 800 cylinder and head question
- 900 zxi
- decieded on group k ...
- 440-550 build
- 750 Mods
- exit Nozzel
- A/F separator
- yamaha 89mm pistons
- Small pin crank
- Harry do you have any pics of the Cowasaki?
- Impeller Pitch...
- Head Sealing on 82.00 750
- 849 kit with 650 ignition, exhaust?
- Jetcraft Eng. dual resonator mufflers