You can see the
I read that
brake pads have
pieces of metal
in the brake-
How can this
the metal pieces
chew up the
they are organic or sintered, have metal particles infused into them. If they
didn’t, they would wear out faster and overheat sooner. “Sintered” describes
a process of fusing metal particles into one mass by the application of
pressure and heat. It’s a method that Dunlop introduced to the aircraft
industry during WWII. Sintered metal pads offer unparalleled wet-condition
performance. Honda, Kawasaki, Suzuki and Yamaha use “sintered” metal
pads. As for the metal particles eating your brake rotor, you can relax. The
producers of brake pads use a copper-like metal compound that is softer than
the brake rotor.
Back in the carb days, Yamaha stayed
on top of its jetting changes.
JETTING FOR THE 2007 YZ450F
Could you provide me your jetting
specs for the 2007 YZ450F? I was
told by a bike-shop mechanic that
Yamahas are typically delivered by
the factory with too small a pilot jet.
Is this your experience?
No, it isn’t. The jetting on the
2007, 2008 and 2009 YZ450Fs is the
same. We did change the pilot jet
in 2006, but from a 42 to a 45—and
the 2007–’09 YZ450Fs came with a
45 after that. On the 2007 YZ450F
we ran the stock 160 main, 45 pilot,
55 leak jet and the fuel screw 2-1/8
turns out. The stock NFLR needle is
a half-clip leaner than the ‘07 NFPR
needle. This is because the 2007
YZ450F had a smaller outlet on the
muffler. If you switched to an aftermarket exhaust, you could return
to the NFPR, richen the clip one
position or go to a 165 main.