TECHNICAL SPECIFICATIONS
-
BULLET
-
350
CC
Engine
Single
Cylinder
4
Stroke
with
Overhead
Valve
Cubic Capacity
:
346cc
Stroke
:
9Omrn.
Bore-Nominal
:
:70rnm
Actual
:
69.875 mm/2.751
in.
Compression Ratio
:
7.25
:
1
compression Pressure
:
110
+
5 PSI (recommended)
Engine outpl
l
t
:
18
BHP
/
5625 RPM
Torque
:
2.74kgm/2875RPM
Piston
and
piston
rfngs:
Ring
dearan
ce
in
grooves
:
Dimensions for new
components]
Plaln (2)
:
.001/.003"
Scraper
:
.002/.004"
Ring
end gap
in
bore
:
.015/.020
Maximum rir-g gap permissible
:
0.030"
Gudgeon
pin
diameter
:
.7498/.7500'!
Crank
pln
diameter
:
1.24875/ 1.249"
Connecthg rod small end diameter
:
.7505/.7507"
crankshaft:
Driving side Ball bearLng
:
25
X
62
X
17
mm
(63051
Roller
bearing
:
25x62~ 17
mm
(NU
305 orN 305)
Timing
side Roller
bearing
:
25x52~ 15mm(NU205orN205R)
CamW
:
.3125
in.
Valve
lift
:
.3125in.
Valve
tizuing
with
-012"
clearance
Exhaust opens
:
75" BTL)C
Exhaust closes
:
35"ATDC
Inlet opens
:
30" BTDC
Inlet closes
:
60" ATDC
Rocker bearing inside diameter
:
.625/.626" (J3irnensions for new Components]
Rocker spindle diameter
:
.6235/.624"
Inlet
valve
stem diameter
:
.3425/.3430
Exhaust valve stem diameter
:
.3405/.3410
Vdve
guide
internd diameter
:
.3437/.3447'
Valve guide external diameter
:
.6270/.6275
Tappet.guide internal diameter
:
.3752/.3760n
Tappet guide external diameter
:
.7505/.7510n
~rication
:
Dry sump,
OU:
tank
integral
with
crank
case
Clutch
:
Wet multiplate,OiI immersed
Engine sprocket
:
25 teeth
Clutch Sprocket
:
56
teeth
Primary
drive
chain
:
3/8" pitch Duplex chain.
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