MRP has the best collection of QMB139 exhausts just listen to see for yourself.
http://www.youtube.com/watch?v=lRsNw1nW42o
Showing posts with label JOG Exhaust. Show all posts
Showing posts with label JOG Exhaust. Show all posts
Saturday, November 24, 2012
Friday, September 7, 2012
Cool review on the MRP exhaust
http://www.youtube.com/watch?
Trying out the MRP exhaust with the cylinder mods. All of the pipes are working better with the change in mainly transfer duration and exhaust port chord width. The MRP really showed some nice gains in acceleration and speed.
Autotech355 68cc Big Bore Kit (Worked to 185/125 durations, 7:1 CCR)
Stock carb, stock airbox, 90 main jet, needle next to leanest
Hoca performance variator w/modified fixed drive face & 2mm of spacers
Stock torque driver/rear pulley
5g sliders, 1000 contra, stock lightened clutch w/2,000RPM springs
Trying out the MRP exhaust with the cylinder mods. All of the pipes are working better with the change in mainly transfer duration and exhaust port chord width. The MRP really showed some nice gains in acceleration and speed.
Autotech355 68cc Big Bore Kit (Worked to 185/125 durations, 7:1 CCR)
Stock carb, stock airbox, 90 main jet, needle next to leanest
Hoca performance variator w/modified fixed drive face & 2mm of spacers
Stock torque driver/rear pulley
5g sliders, 1000 contra, stock lightened clutch w/2,000RPM springs
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