205:
fuel-injected, 722 cubic inches (11.8 litres), 400 hp (298 kW), same as -B1A except equipped with Bendix S8LN-1208 and S8LN-1209 magnetos and Bendix RSA-10ED1 fuel injection, certified 22 February
181:
Eight-cylinder, horizontally opposed, air-cooled direct drive, fuel injection, internal oil jet piston cooling, 722 cubic inches (11.8 litres), 400 hp (298 kW), certified 25 October 1961
199:
fuel-injected, 722 cubic inches (11.8 litres), 400 hp (298 kW), same as -A1A except for top exhaust cylinders and offset exhaust valve shroud tubes, certified 4 November 1965
230:
fuel-injected, 722 cubic inches (11.8 litres), 400 hp (298 kW), same as -A1B except has a rear type air inlet housing instead of a front inlet, certified 29 October 1973
653:
187:
fuel-injected, 722 cubic inches (11.8 litres), 400 hp (298 kW), same as -A1A except equipped with Bendix S8LN-1208 and S8LN-1209 magnetos, certified 22 February 1971
709:
242:
fuel-injected, 722 cubic inches (11.8 litres), 400 hp (298 kW), same as -D1B except equipped with an angled fuel injector adapter, certified 15 April 1982
218:
fuel-injected, 722 cubic inches (11.8 litres), 400 hp (298 kW), same as -A1B except that it has up-exhaust cylinder heads, certified 22 December 1971
1053:
1119:
870:
212:
fuel-injected, 722 cubic inches (11.8 litres), 400 hp (298 kW), same as -B1B except has a dual magneto, certified 30 December 1976
193:
fuel-injected, 722 cubic inches (11.8 litres), 400 hp (298 kW), same as -A1B except has a dual magneto, certified 30 December 1976
236:
fuel-injected, 722 cubic inches (11.8 litres), 400 hp (298 kW), same as -D1B except has a dual magneto, certified 28 January 1977
224:
fuel-injected, 722 cubic inches (11.8 litres), 400 hp (298 kW), same as -C1B except has a dual magneto, certified 28 January 1977
162:
The first IO-720 was type certified on 25 October 1961 to the CAR 13 standard as amended to 15 June 1956 including 13-1, 13-2, 13-3, 13-4.
248:
fuel-injected, 722 cubic inches (11.8 litres), 400 hp (298 kW), same as -D1C except has a dual magneto, certified 10 June 1977
151:
system which schedules fuel flow proportionally to the airflow, with fuel vaporization occurring at the intake ports. The engine has a
716:
1174:
135:
version of the engine, which would have been designated O-720 and therefore the base model is the IO-720. The IO-720 and the
1179:
863:
1153:
938:
649:
770:
856:
681:
1138:
585:
269:
155:
of 722 cubic inches (11.8 litres) and produces 400 hp (298 kW). The cylinders have air-cooled
81:
169:
113,621, with a rebuilt engine retailing for US$ 75,435 and a factory overhaul priced at US$ 66,289.
791:
606:
389:
376:
299:
363:
1027:
1085:
533:
806:
324:
166:
8:
438:
152:
1134:
828:
785:
600:
524:
124:, eight-cylinder aircraft engine featuring four cylinders per side, manufactured by
1063:
1058:
1035:
1017:
1012:
970:
965:
879:
766:
705:
677:
581:
263:
125:
57:
1090:
985:
975:
945:
908:
882:
429:
404:
Lycoming
Specialty Datasheet and TYPE CERTIFICATE DATA SHEET NO. 1E15, Revision 6
35:
139:
are the only flat-eight configuration aircraft engines currently in production.
1007:
960:
955:
950:
933:
928:
923:
918:
913:
903:
898:
350:
337:
148:
105:
1168:
1100:
995:
515:
420:
288:
282:
156:
85:
47:
848:
1095:
294:
77:
1111:
890:
548:
136:
121:
1077:
465:
132:
1073:
1045:
999:
159:
cast from aluminum alloy with a fully machined combustion chamber.
648:
312:
117:
32:
490:
416:
8-cylinder fuel-injected horizontally opposed aircraft engine
16:
Horizontally opposed, eight-cylinder aircraft engine
654:"TYPE CERTIFICATE DATA SHEET NO. 1E15, Revision 6"
1166:
765:
704:
676:
580:
878:
864:
804:
672:
670:
644:
642:
640:
638:
636:
396:
1154:AlliedSignal Aerospace/Honeywell Aerospace
871:
857:
634:
632:
630:
628:
626:
624:
622:
620:
618:
616:
407:
291:- Helio Courier H-800 factory installation
761:
759:
757:
710:"2009 Lycoming Service Engine Price List"
142:
826:
798:
755:
753:
751:
749:
747:
745:
743:
741:
739:
737:
667:
613:
576:
574:
572:
570:
568:
566:
564:
1167:
698:
852:
734:
511:400 hp (297 kW) at 2650 rpm
285:- Excalibur and Queen Air conversions
820:
561:
13:
827:Morrison, Steve (August 8, 2008).
14:
1191:
650:Federal Aviation Administration
483:Bendix RSA-10AD1 fuel-injection
252:
502:
165:In 2009 a new IO-720-A1B cost
1:
1175:1960s aircraft piston engines
554:
474:
392:- Johnson Aircraft conversion
379:- Johnson Aircraft conversion
302:- Johnson Aircraft conversion
538:0.67 hp/lb (1.10 kW/kg)
520:0.55 hp/in³ (25.2 kW/L)
7:
829:"Morrison 6 Specifications"
542:
295:Pacific Aerospace FU-24-954
172:
10:
1196:
807:"The Piper PA-24 Comanche"
1180:Lycoming aircraft engines
1146:
1128:
1109:
1072:
1044:
1026:
994:
889:
425:5.125 in (130.18 mm)
120:is a large displacement,
23:
470:597 lb (271 kg) dry
397:Specifications (IO-720A)
390:Piper PA-36 Pawnee Brave
377:Piper PA-36 Pawnee Brave
300:Piper PA-36 Pawnee Brave
1110:Aero-derivative marine
1028:Aircraft diesel engines
408:General characteristics
364:Embraer EMB 202 Ipanema
353:- MR. R.P.M. conversion
340:- MR. R.P.M. conversion
891:Opposed piston engines
434:4.375 (111.12 mm)
366:- factory installation
327:- factory installation
272:- factory installation
266:- factory installation
143:Design and development
805:Demand Media (2008).
682:"Specialty datasheet"
534:Power-to-weight ratio
443:722 in³ (11.8 litres)
790:: CS1 maint: year (
605:: CS1 maint: year (
449:46.41 In (117.88 cm)
325:Northwest Ranger C-6
122:horizontally opposed
1135:Pratt & Whitney
461:22.53 in (57.23 cm)
455:34.25 in (87.00 cm)
270:Piper Comanche 400
82:Piper Comanche 400
73:Major applications
1162:
1161:
1129:Joint development
942:
652:(February 1988).
586:"Lycoming IO-720"
525:Compression ratio
147:The engine has a
111:
110:
1187:
1133:Avco (Lycoming)/
936:
883:aircraft engines
873:
866:
859:
850:
849:
840:
839:
837:
835:
824:
818:
817:
815:
813:
802:
796:
795:
789:
781:
779:
777:
767:Lycoming Engines
763:
732:
731:
729:
727:
722:on June 12, 2009
721:
715:. Archived from
714:
706:Lycoming Engines
702:
696:
695:
693:
691:
686:
678:Lycoming Engines
674:
665:
664:
662:
660:
646:
611:
610:
604:
596:
594:
592:
582:Lycoming Engines
578:
264:Northwest Ranger
126:Lycoming Engines
102:
74:
58:Lycoming Engines
44:
21:
20:
1195:
1194:
1190:
1189:
1188:
1186:
1185:
1184:
1165:
1164:
1163:
1158:
1142:
1124:
1105:
1068:
1040:
1022:
990:
885:
877:
846:
844:
843:
833:
831:
825:
821:
811:
809:
803:
799:
783:
782:
775:
773:
771:"Engine Finder"
764:
735:
725:
723:
719:
712:
703:
699:
689:
687:
684:
675:
668:
658:
656:
647:
614:
598:
597:
590:
588:
579:
562:
557:
545:
505:
496:Cooling system:
477:
410:
399:
255:
175:
145:
115:Lycoming IO-720
100:
84:
80:
72:
43:National origin
42:
17:
12:
11:
5:
1193:
1183:
1182:
1177:
1160:
1159:
1157:
1156:
1150:
1148:
1144:
1143:
1132:
1130:
1126:
1125:
1123:
1122:
1116:
1114:
1107:
1106:
1104:
1103:
1098:
1093:
1088:
1082:
1080:
1070:
1069:
1067:
1066:
1061:
1056:
1050:
1048:
1042:
1041:
1039:
1038:
1032:
1030:
1024:
1023:
1021:
1020:
1015:
1010:
1004:
1002:
996:Radial engines
992:
991:
989:
988:
983:
978:
973:
968:
963:
958:
953:
948:
943:
939:O-360 variants
931:
926:
921:
916:
911:
906:
901:
895:
893:
887:
886:
876:
875:
868:
861:
853:
842:
841:
819:
797:
733:
697:
666:
612:
559:
558:
556:
553:
552:
551:
544:
541:
540:
539:
530:
521:
516:Specific power
512:
504:
501:
500:
499:
493:
484:
476:
473:
472:
471:
462:
456:
450:
444:
435:
426:
417:
409:
406:
398:
395:
394:
393:
386:
385:
381:
380:
373:
372:
368:
367:
360:
359:
355:
354:
351:Aero Commander
347:
346:
342:
341:
338:Aero Commander
334:
333:
329:
328:
321:
320:
316:
315:
309:
308:
304:
303:
297:
292:
286:
279:
278:
274:
273:
267:
260:
259:
254:
251:
250:
249:
246:
243:
240:
237:
234:
231:
228:
225:
222:
219:
216:
213:
210:
207:
203:
200:
197:
194:
191:
188:
185:
182:
179:
174:
171:
149:fuel injection
144:
141:
109:
108:
106:Lycoming O-360
103:
101:Developed from
97:
96:
93:
89:
88:
75:
69:
68:
65:
61:
60:
55:
51:
50:
45:
39:
38:
30:
26:
25:
15:
9:
6:
4:
3:
2:
1192:
1181:
1178:
1176:
1173:
1172:
1170:
1155:
1152:
1151:
1149:
1145:
1140:
1136:
1131:
1127:
1121:
1118:
1117:
1115:
1113:
1108:
1102:
1099:
1097:
1094:
1092:
1091:LTS101/LTP101
1089:
1087:
1084:
1083:
1081:
1079:
1075:
1071:
1065:
1062:
1060:
1059:ALF 502/YF102
1057:
1055:
1052:
1051:
1049:
1047:
1043:
1037:
1034:
1033:
1031:
1029:
1025:
1019:
1016:
1014:
1011:
1009:
1006:
1005:
1003:
1001:
997:
993:
987:
984:
982:
979:
977:
974:
972:
969:
967:
964:
962:
959:
957:
954:
952:
949:
947:
944:
940:
935:
932:
930:
927:
925:
922:
920:
917:
915:
912:
910:
907:
905:
902:
900:
897:
896:
894:
892:
888:
884:
881:
874:
869:
867:
862:
860:
855:
854:
851:
847:
830:
823:
808:
801:
793:
787:
772:
768:
762:
760:
758:
756:
754:
752:
750:
748:
746:
744:
742:
740:
738:
718:
711:
707:
701:
683:
679:
673:
671:
655:
651:
645:
643:
641:
639:
637:
635:
633:
631:
629:
627:
625:
623:
621:
619:
617:
608:
602:
587:
583:
577:
575:
573:
571:
569:
567:
565:
560:
550:
547:
546:
537:
535:
531:
528:
526:
522:
519:
517:
513:
510:
509:Power output:
507:
506:
497:
494:
492:
488:
485:
482:
479:
478:
469:
467:
463:
460:
457:
454:
451:
448:
445:
442:
440:
436:
433:
431:
427:
424:
422:
418:
415:
412:
411:
405:
403:
391:
388:
387:
383:
382:
378:
375:
374:
370:
369:
365:
362:
361:
357:
356:
352:
349:
348:
344:
343:
339:
336:
335:
331:
330:
326:
323:
322:
318:
317:
314:
311:
310:
306:
305:
301:
298:
296:
293:
290:
289:Helio Courier
287:
284:
283:Beechcraft 80
281:
280:
276:
275:
271:
268:
265:
262:
261:
257:
256:
247:
244:
241:
238:
235:
232:
229:
226:
223:
220:
217:
214:
211:
208:
204:
201:
198:
195:
192:
189:
186:
183:
180:
177:
176:
170:
168:
163:
160:
158:
154:
150:
140:
138:
134:
129:
127:
123:
119:
116:
107:
104:
99:
98:
95:1961–present
94:
91:
90:
87:
86:Helio Courier
83:
79:
76:
71:
70:
66:
63:
62:
59:
56:
54:Manufacturer
53:
52:
49:
48:United States
46:
41:
40:
37:
34:
31:
28:
27:
22:
19:
1141:(Turboshaft)
1112:gas turbines
980:
845:
832:. Retrieved
822:
812:December 20,
810:. Retrieved
800:
776:December 19,
774:. Retrieved
724:. Retrieved
717:the original
700:
690:December 20,
688:. Retrieved
659:December 13,
657:. Retrieved
591:December 19,
589:. Retrieved
532:
523:
514:
508:
495:
486:
481:Fuel system:
480:
464:
458:
452:
446:
439:Displacement
437:
428:
419:
413:
401:
400:
253:Applications
164:
161:
153:displacement
146:
131:There is no
130:
114:
112:
78:PAC Fletcher
18:
1078:Turboshafts
834:October 11,
549:Jabiru 5100
503:Performance
384:IO-720-D1CD
345:IO-720-B1BD
307:IO-720-A1BD
245:IO-720-D1CD
233:IO-720-D1BD
221:IO-720-C1BD
209:IO-720-B1BD
190:IO-720-A1BD
137:Jabiru 5100
36:aero-engine
1169:Categories
1074:Turboprops
555:References
498:air-cooled
487:Fuel type:
475:Components
466:Dry weight
371:IO-720-D1C
358:IO-720-D1B
332:IO-720-B1B
319:IO-720-B1A
277:IO-720-A1B
258:IO-720-A1A
239:IO-720-D1C
227:IO-720-D1B
215:IO-720-C1B
202:IO-720-B1B
196:IO-720-B1A
184:IO-720-A1B
178:IO-720-A1A
133:carbureted
64:First run
1046:Turbofans
1000:H engines
402:Data from
92:Produced
1147:See also
1139:T800-APW
880:Lycoming
786:cite web
769:(n.d.).
726:June 21,
708:(2009).
680:(2004).
601:cite web
584:(n.d.).
543:See also
173:Variants
1086:AGT1500
1036:DEL-120
1018:XH-2470
1013:XR-7755
971:GSO-580
966:TIO-541
459:Height:
447:Length:
24:IO-720
1064:LF 507
986:O-1230
981:IO-720
976:IO-580
946:IO-390
909:IO-233
529:8.70:1
489:100LL
453:Width:
430:Stroke
313:Barr 6
118:engine
33:Piston
1120:TF-40
1008:R-680
961:O-540
956:O-480
951:O-435
934:O-360
929:O-340
924:O-320
919:O-290
914:O-235
904:O-233
899:O-145
720:(PDF)
713:(PDF)
685:(PDF)
491:avgas
414:Type:
157:heads
67:1961
29:Type
1054:PLF1
998:and
836:2012
814:2008
792:link
778:2008
728:2009
692:2008
661:2008
607:link
593:2008
421:Bore
206:1971
167:US$
113:The
1101:T55
1096:T53
1171::
1137::
788:}}
784:{{
736:^
669:^
615:^
603:}}
599:{{
563:^
128:.
1076:/
941:)
937:(
872:e
865:t
858:v
838:.
816:.
794:)
780:.
730:.
694:.
663:.
609:)
595:.
536::
527::
518::
468::
441::
432::
423::
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.