FYI:
Here is an engine weight comparison. I found this on the internet, so I don't know how accurate it is, but all weights are in lbs. I see the A-65 is 173 lbs, whereas the electric start C-85 is 207 lbs, which sounds about right.
Rotax 503 85
Great Plains VW 1600CC 160
Hirth F23-EP2 70
Jabira 119
PZL 2A-120 129
Rotax 582 95 Includes 20 lbs radiator, etc.
Continental A-65 173
Limbach L 1800 154
Limbach L 1700 161
Rotax 618 136 Includes 20 lbs radiator, etc.
Great Plains VW 2180CC 165
Franklin 225 230
Limbach L 2000 155
Rotax 912 165 Includes 20 lbs radiator, et
Continental C-85 207
Limbach L 2400 181
Continental C-90 207
Great Plains VW 2600CC 190
Stratus Subaru EA-81 205
Continental O-200 220
CAM-100 225 Includes 20 lbs radiator, etc
Formula Power C100 210
Rotax 914 155
Lycoming O-235 215
PZL 4A-235 226
Hirth F30-FP24 101
Continental IO-240 250
Continental O-300 277
Lycoming O-320-A 243
Lycoming O-320-D 253
Franklin 335 320