SHOP BULLETIN #11
T T pipe for 400cc may be made by
cutting the center cylinderical section
of the exhause pipe 2.75 inches.
Widen all ports to maximum. Do not
raise or lower ports.
CAUTION:
This raises the RPM.
Reduces low speed torque.
Reduces reliability.
Increases speed " horsepower.
This is not for motocross.
SHOP BULLETIN #11
T T pipe for 400cc may be made by
cutting the center cylinderical section
of the exhause pipe 2.75 inches.
Widen all ports to maximum. Do not
raise or lower ports.
CAUTION:
This raises the RPM.
Reduces low speed torque.
Reduces reliability.
Increases speed " horsepower.
This is not for motocross.
Maico 72-74.5 Radial Manaual
www.maicowerk.com
Courtesy of vintagemaico@gmail.com
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