O.S. Engines, .21VZ-B V-Spec EB Mod w/21C Slide Carb

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OSMG2080    .21VZ-B V-Spec EB Mod w/21C Slide Carb

TECH NOTES

This is the O.S. Max 21VZ B V-Spec EB Modified RC Vehicle Engine
with Slide Valve Carburetor and Rear Exhaust for
Off-Road 1/8 scale Racing Trucks
Hand assembled and balanced and blueprinted to guarantee
precision parts fit, longest engine life and best possible performance.

***This engine does not have the O.S. Max 2 Year Warranty.***
For all set-up questions and engine service contact-
EB MODS
Ed Bridges
572 E. Main St.
Larksville, PA 18651
Shop Phone: (570) 719-1012
Fax: (570) 719-1007

FEATURES: Takes the proven power and performance of the 21VZ B V-Spec and
provides a 3500 RPM broader power curve over stock with more low-
end torque and higher RPM rev
Lightened and silicone filled crankshaft improves fuel delivery and
while maintaining counterbalance weight
Crankshaft is balanced using bob weights for a .2 IPS level or better
Crankshaft face is modified to improve aerodynamics, fuel atomizing
and balance
Lightened and strengthened connecting rod for reduced rotating and
reciprocating weight
Lightened and modified piston for reduced reciprocating weight and
improved fuel flow
Cylinder sleeve is ported to increase port velocity while
maintaining proper port angles
Piston and sleeve is matched to increase cylinder sealing area
and improved power and engine life
Improved head squish angle for improved throttle response and
combustion

INCLUDES: O.S. Max 21VZ B V-Spec RC Vehicle Engine with 21C Slide Valve
Carburetor, P3 glow plug, carb gasket and instruction manual

REQUIRES: Fuel: Car blend fuel with 30% nitromethane content
#203 Air Cleaner Assembly, OSMG2360

SPECS:    Specs such as bore, stroke, RPM and power output are not provided,
contact EB MODS for more info.

Weight w/o Muffler: 12.1 oz (345g)
Height from crankcase bottom to top of cylinder head: 4.4"  (110.6mm)
Height/crankshaft center to top of cylinder head:     3.8"  (95.3mm)
Width including mounting ears:                        1.8"  (45mm)
Width not including mounting ears:                    1.2"  (30.8mm)
Width between mounting holes same side:               .83"  (21mm)
Width between mounting holes opposite side:           1.5"  (37mm)
Cylinder head diameter:                               2.3"  (57.2mm)
Length of exposed pilot shaft/crankshaft:             1.17" (29.6mm)
Internal thread size at end of crankshaft:                 3mm

COMMENTS: Turbo glow plugs do not require a copper gasket.
With the carb restrictors, the driver can select either low fuel
consumption or high power, allowing a wide range of engine control
Usage is as follows:
-9mm Blue: Fitted with Carb at factory. Suitable for high-speed and
flat courses that require power.

-8mm Red: Supplied with engine. Suitable for technical and bumpy
courses and when less fuel consumption is important

ACCESSORIES

THIS IS THE O.S. MAX .21 VZ-B V-SPEC EB MODS RACING TRUCK ENGINE.
FEATURES: TKO REAR CERAMIC BEARING, LIGHTENED, FILLED & BALANCED CRANKSHAFT,
PORTED SLEEVE & CASE, LIGHTENED & STRENGTHENED CON ROD & PISTON, P3 GLOW PLUG,
SLIDE VALVE CARB, 9MM & 8MM CARB RESTRICTORS
REQUIRES: 30% FUEL W/18% OIL CONTENT, HEADER, COUPLER, TUNED PIPE, AIR FILTER