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2-2
SPECIFICATIONS
ENGINE
(24)
2-2 ENGINE GENERAL SPECIFICATIONS
a. General Information
Itema
T
ype
.
Cylinders a
n d
Arrangement
.
B
ore a
n d
Stroke
.
P
ist on
D
is pl a cemen t
.
Com pression
Ratio-
Series
40
,
.
Se
r
ies
50-70 Syncro-Mesh
.
Series 50-7 0
Dynaflow
.
Compression
Pressure at Cranking Speed (Ibs
.
zsq . in
.)
Series 40
.
Series 50- 70 Sync ro-Mesh
.
Series 50
-70 Dynaflow
.
Firing Or der
.
.
.
Taxable
H
orsep ower
.
M
a
x.
Bra ke H
.P.,
B
are
Engine, @
36
00 RPM
Se
ries 40
.
Se
ries 50- 70 Syncro- Mesh
.
Se
ries 50-70 D
ynaflow
.
Engin e
W
eight , Less C
lutch
and
Transmission (lbs.)
.
Type
of Engin e
Mou ntings
.
Number of M
oun t ings and
Material
.
b. Cylinder Crankcase and Cylinder Head
C
ylinder C
rankcase
Type
.
C
ylinder
H
ead Type and Material
.
Com bust io n
C
hamber
.
Head Bol ts , Num ber
and Diameter
.
6.6
t
o 1
6.9
t
o 1
112
114
118
0(
30.63
110
115
14
4
120
150
709
840
0(
Controll ed
Frequency---~
0(
3
S
ynthetic Rubber' - - - - +
-+-Block Case Integral wi
th Crankcase-s-
0(
One
Piece,
C
ast Iron
~
0(
Cast in H
ead
~
0(
22,
%
"
~
85
.5
lbs.
114
lbs ,
5
5
0(
Center
~
0(
Replaceable-P recision-r-r-s-e-
~Steel
B
a cked Durex-100A
~
None
None
Cast
Iron
Cast Iron
Pressed
Steel
Pressed
Steel
36.55Ibs.
44.75Ibs.
146
156
~Laminated
Steel
Flywheel
Sup-
ported on Steel
Lea f
Springs~
~
Front
End of Crankshaft-r-r--r-e-
c. Crankshaft
Bearings,
Flywheel Balancer
Crankshaft
W
eigh t
.
Number of
Crankshaft
Bearings
.
Bearing
which
takes Thrust
.
C
rankshaft
Bearing T
y pe
.
Crankshaft
Bearing M
a t er ia l.
.
Provision
for Bearin g
Adjustment
.
Bearing
Cap Bolts,
N
o . a
n d
Diam.
R
ear
Bearing
. .
.
.
.
Flyw~~~rJ::e~ii~fs
.
Syncro-Mesh
.
Dynaflow
.
Weight of
C
.
I. F
ly wh eel
and
R
in g
.
Number of T
ee th
on R
ing
.
Crankshaft
Balancer
Type
.
Balancer Location
.
Two,
Y2"
Two,
Y2"
Four,
Y2"
Two,
Y2"
d. Connecting Rods, Pistons and Rings
Connect in g
Rod
Bearing Type-
19
48
and First 1949
.
1949 Excep t
First Jobs
.
Provision for
Bearin g
Adjustment
1948
a
n d
First
194 9
.
1949 E
xce p t First Jobs
.
No. and
Diam. of Cap Bolts
.
How are
Rods and Pistons Removed
.
Weight of
Connect ing Rod
Assembly
(lbs .)
With
Cast Bearin gs
.
W
ith Replace able Bearings
.
Piston Type
.
.
.
Piston
Weight ,
Less Pin
a
n d
Rings
.
Piston
Features
,
Piston Material and
Surface
Treatment
.
Compression Rings per
Piston
.
Type
.
Oil Rings per
Piston
.
.
.
Type, Upper
.
Type, Lower
.
Location of All Piston Rings
.
~C entrifugally
Cast
in
Rod~
0(
Replaceable-Precision
~
0(
Solid S
h im s
~
N
one
None
Two ,
VB"
Two,
?1' 6
"
-+-- -
-From
T
op
of Cylinder
~
1.779
2
.2
24
1.
804
2.224
0(
Full
Skirt
~
13
.776
oz.
17
.9 4
oz
.
-+--Turb ulat or
Top-Cam Ground
Transverse Slot
~
-+--Al uminum
Alloy-s-Anodized -r-r-rs-
2
2
0(
Inside
Bevel
~
2
2
-+--C h a n n eled-Oil Return
Slot~
0(
F
lex-Fit
~
0(
Above Piston Pin
~
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