1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196 
New Compact, Light G.M.C. Oil Engines
Page 152
If you've noticed an error in this article please click here to report it so we can fix it.
ANEW line of industrial and automotive two-stroke oil engines has been introduced by General Motors Corporation, of America. They range from a 20 b.h.p. twin-cylindered unit to a 1.650 b.h.p. turbocharged V-32. A threecylindered unit—one of the smallest engines made in the U.S.A.—is being used in taxis and light pick-ups, its highest rating being 97 b.h.p.
For normal vehicle applications the 6V-53, 6V-71 and -8V-7l V-6 and V-8 B14 engines are of interest because of their light weight and small overall dimensions. The 6V-53, for instance, develops 195 b.h.p. at 2,800 r.p.m., yet weighs only 1,340 lb. and is only 34Ain. long. The 6V-71 unit is rated at 217 b.h.p., weighs 1,855 lb. and is 42 9-32 in. long, whilst The 8V-71 V-8 engine develops 290 b.h.p., and is no longer than normal in-line sixcylindered units.
All the " 53 " engines run at 2.800 r.p.m. governed speed, whilst the "71 " series is governed at 2,100 r.p.m. Thus, the smaller engines are directly competitive with petrol units of equal output.
Weight saving has been achieved by using aluminium-alloy cylinder blocks, flywheel housings and various small castings, giving a power-weight ratio as low as 6.9 lb./b.h.p. in the case of the 6V-53.