West Coast Porting offers 1, 2, & 3 cylinder , 2 stroke porting. We have a wide range of services to offer you.

From mild rec porting to all out race porting! Please contact us to setup a combination for your specific needs. WCPORTING can port your cylinders for more

bottom, mid, or top end were its needed.

We offer

Big bore kits

2-stroke-Porting

Replating

Port match intake/exhaust flanges

Custom built watercraft and repairs

Head milling

Here is a couple ski's built at West Coast Porting

06' Yamaha GP1400R big bore EFI.......81 mph at 4100' elevation

Yamaha GP1500R 4mm stroke, triple piped big bore......86 mph at 4100'  built by WCPORTING

Call us to see what we can build for you!

Our services

    We offer custom machined ride plates from Jims Performance.

   WCPORTING has saw speed gains of 4.7mph with the ride            plate alone on our Yamaha GPR watercraft ! Call us for pricing.

        

    

YAMAHA

00'-08' GPR R&D plate

00'-08' GPR Riva plate

XLL/XLT R&D plate

02'-04' FX Riva plate

02'-04' FX R&D plate

05' FX140/FX-HO R&D plate

05' FX140/FX-HO Riva plate

SHO R&D plate

KAWASAKI

Ultra 250 stock plate mod

Ultra 250 Riva plate

SEADOO

RXP/RXT stock plate mod

RXP/RXT stock plate open loop mod

RossNemos Sonic Boom GPR EFI Throttle bodies.

50-100 Rpm gains on top end are very common, along with a huge increase in midrange torque and throttle sensitivity..

Standard version open velocity stacks or APBA, IJSBA approved flame arrestor equipped versions available.

OSB Engineering for all your carburetor needs.  WCPORTING  only uses the best parts and services available. When it comes to carb work, OSB is the only company we trust to do the work right! Carbs are one of the leading components of an engine that make it run.When they fail, the engine fails and can lead to costly expences from engine damage.

http://members.cox.net/bbartleet/index.htm

Special thanks to Lowell Horning at 2-stroke-porting.com for teaching me the trade. 

http://www.2-stroke-porting.com/

WC PORTING  has just released our new TDR waterbox and exhaust mod

for the GPR/SHO conversion ski's !  Everything bolts in using the stock SHO

coupler. We modify the stock SHO exhaust and send it back with a custom designed TDR waterbox. This will be used with the Riva free flow Blue Tube.

No more cutting the big bulky stock waterboxes, this is a complete bolt in system and the sound is awesome!  If you do not have the Riva free flow tube, we can include that with the kit.

R&D is proud to announce our new line up of Yamaha FZR and SHO ECU reprogramming services. The engineering staff at R&D have been testing and developing ECU programs to allow new performance levels to be reached for recreational enthusiasts and racers who are interested in more performance through reprogrammed the OEM ECU. Entry level programs will allow the enjoyment of a raised RPM limit settings, advanced ignition timing, re-calibrated fuel map, as well as the internal boost limiter raised to allow R&D Monster Wheels to work to full potentials. The Ignition timing in each reprogram is developed to maximize performance with specific fuel octane’s and boost levels. There are several performance levels to choose from that work with stock or R&D C1, C3, and C5 Monster Wheels or any wheel kit rated up to 18 pounds of boost. Programs offered are recreational performance tuned with safe AFR values, and can be further custom tuned (Richened) to accommodate additional boost levels. Existing customers who have purchased an R&D Powershot Fuel Control Unit can send their units in to R&D for free upgraded re-programming to allow custom fuel tuning to work with the new ECU Programs. R&D Powershot Fuel Control Units are not required on entry recreational level (R1, R2, or R3) programs using stock, C1, or C3 Wheels. However, custom fuel tuning with the Powershot Fuel Tuner can be an add-on or additional upgrade that is suggested for higher performance applications such as C5 Monster Wheel Kits. Fuel tuning or AFR conditions should always be checked and verified as values will always be slightly different from one engine set up to another. Higher performing programs are continuously under development and will be announced through updates on the R&D web site, so stay tuned. Custom program files can also be performed to accommodate just about any combination of performance level or type of fuel being used. R&D strongly suggests that AFR tuning be periodically verified using Innovate Products LM1 or LC1 Logging Kit also available from R&D. Take your ECU to the next level of performance and send it in for reprogramming today and have it back for the weekend. Normal turnaround time is 2-3 days.

Part #802-01801 R&D R1 ECU; Reprogrammed ECU to allow up to 8450 RPM’s, Raised Boost limiter to allow up to 18 pounds boost, and upgraded ignition timing safe for all recreational and offshore racing use. R1 works great with stock, C1, C3, or C5 Monster Wheel Kits, or any wheel kit rated up to 18 pounds of boost. 89 octane safe with stock and C1 wheels, 91 octane pump fuel use is recommended for C3 and C5. The R1 program file does not require a Powershot Fuel Tuner for use with C1 and C3 Monster Wheels.

Part #802-01802 R&D R2 ECU; Reprogrammed ECU to allow 8750 RPM’s, Raised Boost limiter to 17 pounds, advanced ignition timing for high performance recreational use. R2 works great with stock, C1, C3, or C5 Monster Wheel Kits, or any wheel kit rated up to 18 pounds of boost. 91 octane pump fuel should be used with R2 reprogram. 93-95 octane fuel is recommended for closed course racing conditions where high engine loads are present. The R2 program file does not require a Powershot Fuel Tuner for use with C1 and C3 Monster Wheels.

Part #802-01803 R&D R3 ECU; Reprogrammed ECU to allow 8850 RPM’s, eliminated Boost limiter, aggressively advanced ignition timing in the low end areas and softer high rpm settings in the peak boost areas for high performance recreational use. R3 works great with C1, C3, or C5 Monster Wheel Kits, or any wheel kit rated up to 18 pounds of boost. 91-93 octane pump fuel should be used with R3 reprogram with O.E.M. 8.6-1 pistons and cams. R&D suggests 100 plus octane fuel when using 9.5-1 pistons, RC1 Cams, and R&D Pro Tune Adjustable Cam Gear Kits. NOTE: The R3 program file does not require a Powershot Fuel Tuner for use with C1 and C3 Monster Wheels. Use the Powershot for custom fuel tuning with C5 wheel kits. NOTE: The R&D RRFPR Kit is required when using the R&D C5 Monster Wheel Kit.

Part #802-01803v R&D R3 VF ECU; Reprogrammed ECU allows the use of variable fuels. Run 91 octane at 12-13 pounds (180 kpa) of peak boost, and run 98 or 100LL Aviation fuel when boost pressure is adjusted to 15-18 pounds. The program allows 8850 RPM’s, eliminated Boost limiter, aggressively advanced ignition timing in the low end areas and softer high rpm settings in the peak boost areas for high performance recreational use. R3 VF works great with C1, C3, or C5 Monster Wheel Kits, or any wheel kit rated up to 18 pounds of boost. 91-93 octane pump fuel should be used with R3 VF reprogram with O.E.M. 8.6-1 pistons and cams at 12-13 pounds. R&D suggests 100 plus octane fuel when using 9.5-1 pistons, RC1 Cams, and R&D Pro Tune Adjustable Cam Gear Kits. NOTE: The R3 VF program file does not require a Powershot Fuel Tuner for use with C1 and C3 Monster Wheels. Use the Powershot for custom fuel tuning with C5 wheel kits. NOTE: The R&D RRFPR Kit is required when using the R&D C5 Monster Wheel Kit. NOTE: Adjusting the peak boost pressure is done via the R&D/GReddy adjustable boost level/surge protection valve. The R3 VF Program allows the recreational rider/racer the flexibility to race on Sunday with 15-18 pounds of boost and aggressive timing with 100 octane Aviation fuel, and still be able to take the family out for weekend fun with 91 octane pump gas when boost is adjusted back to 10-13 pounds. NO need for switching booster wheels to attain lower boost and lower rpm settings. Another great feature available only from R&D!

Part #802-01804 R&D R4 ECU; Reprogrammed ECU to allow 8850 RPM’s, eliminated Boost limiter, aggressively advanced ignition timing that requires 100 octane Aviation fuel for high performance Pro Stock or Pro Limited racing use. R4 works great with stock, C1, C3, or C5 Monster Wheel Kits, or any wheel kit rated up to 18 pounds of boost.

Part #802-01805 R&D R5 ECU; Reprogrammed ECU to allow 8950 RPM’s, eliminated Boost limiter, aggressively advanced ignition timing that requires VP MS 109 race gas for high performance Pro Stock or Pro Limited racing use. R5 works great with stock, C1, C3, or C5 Monster Wheel Kits, or any wheel kit rated up to 18 pounds of boost.

Part #802-01806 R&D R6 ECU; Reprogrammed ECU to allow 9000 RPM’s, eliminated Boost limiter, aggressively advanced ignition timing that requires VP MS 109E fuel for high performance Pro Stock or Pro Limited racing use. R6 works great with stock, C1, C3, or C5 Monster Wheel Kits, or any wheel kit rated up to 18 pounds of boost.

Part #802-01807 R&D R7 ECU; Reprogrammed ECU to allow 9000 RPM’s, eliminated Boost limiter, aggressively advanced ignition timing that requires VP C12 race gas for high performance Pro Stock or Pro Limited racing use. R7 works great with stock, C1, C3, or C5 Monster Wheel Kits, or any wheel kit rated up to 18 pounds of boost.

Part #802-01808 R&D R8 ECU; Reprogrammed ECU for 725cc injectors @ 52 psi fuel pressure, 8750 RPM’s, eliminated Boost limiter, advanced ignition timing requires 91 octane pump gas for high performance recreational use. R8 is designed for the C5 Monster Wheel Kit or any wheel kit rated for 18 pounds of boost.

Part #802-01809 R&D R9 ECU; Reprogrammed ECU for 725cc injectors @ 52 psi fuel pressure, 8850 RPM’s, eliminated Boost limiter, advanced ignition timing requires 100 octane Aviation fuel. R9 is designed for the C5 Monster Wheel Kit or any wheel kit rated for 18 pounds of boost.

Part #802-01810 R&D R10 ECU; Reprogrammed ECU for 725cc injectors @ 52 psi fuel pressure, 9000 RPM’s, eliminated Boost limiter, advanced ignition timing requires VP MS 109 Race gas. R10 is designed for the C5 Monster Wheel Kit or any wheel kit rated for 18 pounds of boost.

Part #802-01811 R&D R11 ECU; Reprogrammed ECU for 725cc injectors @ 60 psi fuel pressure, 9000 RPM’s, eliminated Boost limiter, advanced ignition timing requires VP C12 Race gas. R11 is designed for the C5 Monster Wheel Kit or any wheel kit rated for 18 pounds of boost.

Part #802-01812 R&D R12 ECU; Reprogrammed ECU for 1000cc injectors @ 60 psi fuel pressure, 9000 RPM’s, eliminated Boost limiter, advanced ignition timing requires VP MS 109/C12 Race gas. R12 is designed for the C5 Monster Wheel Kit or any wheel kit rated for 18 pounds of boost.

NOTE: Rev Limiter settings can be raised or lowered upon request. R&D is also developing E85 fuel programs that utilize the R&D 1000cc Injectors.