International Waters Community

International Waters Gallery

Last additions - tnrcboatracer
NR CF 3280152 viewstnrcboatracerFeb 19, 2008
NR CF Squarewave pipe 181 viewstnrcboatracerFeb 19, 2008
CF 3280 pipe for MAC/Valvola162 viewsThis pipe is a CF version of the OPS3280. Available in both MAC/Valvola/K&B front exhast, and NR/CMB rear exhaust styles. Standard head pipe is 0.527" ID. Reaming the head pipe to 0.565" for telescoping over the small MAC header is available for $5 upcharge. tnrcboatracerFeb 19, 2008
NR Squarewave pipe designed by Rod Geraghty.151 viewstnrcboatracerFeb 19, 2008
NR Squarewave pipe183 viewsThis pipe was designed by Rod Geraghty. Testing to date has been excellent. Available in both NR/CMB rear exhaust and MAC/Valvola/K&B front exhaust configurations.tnrcboatracerFeb 19, 2008
MAC 21 CF pipe154 viewstnrcboatracerFeb 19, 2008
Marty Davis designed MAC21 pipe.177 viewsThis pipe will only be available for the MAC/Valvola front exhaust engines. The design of this pipe is spec'd for 33,000+ RPM.tnrcboatracerFeb 19, 2008
387 viewsMotor has ramped rotor for maximum case pumping efficiency.tnrcboatracerFeb 17, 2008
309 viewstnrcboatracerFeb 17, 2008
Side view349 viewsThe screws in the port runner secure a filler plate that reduces the depth (and thus volume) of late model MAC67 cases. The volume reduction increases the pumping efficiency of the motor and improves torque and accelleration. This mod is a real PITA, and Rod swears he will never do it again, but it is very effective. I have both motors that Rod performed this artristy on. tnrcboatracerFeb 17, 2008
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