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YAMAHA FX-SHO/FZ/VXR/VXS • ENGINE
R&D YAMAHA
FZ/FZR/SHO
PRO TUNE
ADJUSTABLE
CAM GEAR KIT
R&D’s Racing Cam Gear kit allows a huge boost in overall horsepower to be
gained by custom tuning the camshafts LCA (lobe separation angle) set up.
Tuning the LCA with R&D Pro Tune Cam Gears can add 200-300 RPM’s,
increased boost pressure, and 2-3 MPH to your existing engine package.
Adjusting the camshafts LCA is a very simple “BOLT IN” modification with the
R&D Pro Tune Adjustable Cam Gear Kit. Understanding the LCA concept
principle is fairly easy. A wide LCA like found in the SHO and FZR will
generally result in decreased valve overlap, later intake events, earlier
exhaust events, and high intake manifold pressures which produce great idle,
smooth accelerating with mild low and top end power. Wide LCA’s are great
for school buses and soccer mom vans. However, if strong mid range pull
and top end horsepower is what you’re looking for, then a narrower LCA will
need to be generated. The R&D Pro Tune Cam Gear Kit allows the LCA
(lobe separation) to be adjusted narrower which will generate increased valve
overlap, earlier intake events, and later exhaust events. Resulting in snappier
throttle response, increased mid range and top end power and more boost.
Why spend big money on optional camshaft kits (i.e. 1800 N/A cams) that
have proven to offer too narrow of LCA compromising idle tune? Buy the
R&D Pro Tune Cam Gears designed specifically to improve overall power at
a fraction of the cost and provide an optimum overall tune. The R&D Cam
Gear Kit offers four possible LCA combinations that allow the cams to be
tuned depending on the type of riding or racing and type of fuel. In fact,
R&D has built a specific engine designated for degreeing, checking and
proving camshaft specifications. Depend on the Pro’s at R&D to deliver all
your horsepower needs.
• Aggressive throttle response, increased overall horsepower
• Increased rpm performance (+200-300 RPM Gain)
• Boost Pressure Increase (+1 pound) • 15-25 Horsepower Increase
• Precision CNC Billet/Ground Cam Gears (lighter than stock)
• R&D R1, R2, and R3 ECU Compatible
• Works well with R&D Cam Regrind and Valve Spring Kit upgrades
• Easy installation • Bolt on Higher Horsepower Upgrade
NOTE: R&D has determined that the O.E.M LCA is a WIDE 120 degrees
stock, with an intake cam lobe center of 122.5 degrees. Considering the LCA
timing facts, using the R&D Pro Tune Cam Gears to tune the cams will gen-
erate huge performance power gains. R&D has found in testing that a 2.5
degree LCA change will act similar to a 1 pound boost addition. Tests have
proven that an R&D C1 or C3 compressor wheel and a 7 degree LCA
change can have the same performance advantages as a 15 pound
compressor wheel. Call R&D for constant power upgrade information as
we are constantly at work looking for more.
Description
Part No.
R&D Yamaha FZ/FZR/SHO Pro Tune Adjustable
612-93008
Cam Gear Kit
R&D CAM
TENSIONER GASKET
R&D's new Cam Tensioner Gasket has a metal
reinforced center that enables it to be reusable.
Description
Part No.
R&D Cam Tensioner Gasket
080-21025
RIVA YAMAHA 1.8L ENGINE
ADJUSTABLE CAM SPROCKET KIT
Adjustable Cam Sprocket Kit delivers a significant increase in horsepower,
speed & RPM through easy cam timing adjustment. Our ‘Quick-Tune’ design
features color coded timing inserts that lock-in desired cam adjustment in
minutes without removal of cam tensioner, camshaft or cam sprocket (after
initial installation). Design allows fast & easy timing adjustment; saving hours
of time when testing and tuning. Sprockets are precision machined from billet
steel and heat treated for maximum durability.
Key Features Include:
• Allows fast & easy adjustment of cam timing for maximum performance.
• Quick-Tune timing inserts lock-in cam timing in minutes.
• Designed for both SHO & HO Yamaha 1.8L engines.
• Works well with both stock and performance cams.
• Easy bolt-on installation.
• Includes complete instructions with tuning guide.
Description
Part No.
RIVA Yamaha 1.8L Engine Adjustable Cam
RY19040-ACS
Sprocket Kit
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