126:
487:(MAP) sensor just like the V12 cars from the same era. Later 3.6 L (3,590 cc) AJ6 engines as used in the 1986–1989 XJ40 cars had a crank-sensor type of ignition system with a bare distributor that only carried the spinning ignition rotor inside the distributor cap. The fuel-injection system used on the later 3.6 L (3,590 cc) AJ6 engines used a hot-wire Mass Air Flow sensor to determine engine load.
575:
cover. XJR badge size was decreased on the boot (had previously ranged from XJR-3.6, XJR-4L, 4-litre and "XJR". The later one ("XJR") is most common and the only badge that could be chosen on the boot infill panel models. A "sport" one on the front within its own unique XJR grill. In this unique grill a "sport" badge was installed. Interior even had XJR specific wood (SPB part number).
22:
552:
The 24-valve DOHC 4.0 L (3,980 cc) version replaced the 3.6 L (3,590 cc) AJ6 in 1989. It featured a longer 102 mm (4.02 in) stroke, and generated 183 kW (249 PS; 245 hp) power at 4,750 rpm and 392 N⋅m (289 lb⋅ft) of torque at 3,650 rpm.
536:
used the 2.9. It was used for the entry-level XJ6 in
Britain and Europe but rarely, if ever, seen in models exported to the US. The SOHC 2.9, which was generally considered somewhat underpowered for such a large car, was discontinued in late 1990 and replaced with a DOHC 3.2 (essentially identical to
471:
heads with a 91 mm × 92 mm (3.58 in × 3.62 in) bore and stroke. Power was 165 kW (224 PS; 221 hp) with 325 N⋅m (240 lb⋅ft) of torque. Power was reduced to 201 hp (150 kW; 204 PS) for versions having catalytic exhaust system. Early
578:
Total XJ40 cars built was 208,733 and supposedly 500 JaguarSport cars built, 200 of the round headlight versions and then about 300 with the square headlights like the
Sovereigns and Daimler's. 1990+ XJR power output is around 250 bhp (186 kW; 253 PS) / 278 lb⋅ft (377 N⋅m).
574:
The exterior changed again for the last generation of the XJ40 XJR (from H-registration year onwards). Bodykit was re-sculptured and the boot spoiler was deleted. Side mouldings were added, with the smaller "XJR" badge embedded in them. Engine had a plaque saying "Jaguarsport XJR 4L" on the rocker
590:
A 24-valve DOHC 3.2 L (3,239 cc), essentially a shorter-stroke of 83 mm (3.27 in) 4.0 L (3,980 cc), replaced the 12-valve SOHC 2.9 in 1990. It produced 149 kW (203 PS; 200 hp) of power at 5,250 rpm and 298 N⋅m (220 lb⋅ft) of torque at
553:
The 4.0 L (3,980 cc) engines as used in the 1990–1994 XJ40 cars continued with the crank sensor and empty distributor type of ignition system and the hot-wire Mass Air Flow sensor type of fuel injection control system as the 1988–1989 3.6 L (3,590 cc) XJ40 cars.
570:
XJR 1.0Ls from 1990 on had all of the XJR 3.6 handling upgrades and benefits from engine enhancements such as high lift cams, improved double plenum inlet manifold, and a compression ratio of 9.75:1. They were sent to TWR in
Coventry to be modified directly after being produced.
659:
saloon. These are the "AJ16" engines, both featuring coil-on-plug distributorless ignition, new engine management systems, magnesium alloy valve covers, revised pistons and other detail changes. The AJ16 was discontinued with the launch of the
564:/links, power steering valve that reduced efficiency by 40% and an LSD but no performance enhancements. Interior-wise it included special stitching, "sport" or "XJR" embossed front headrests, and Jaguarsport speedometer labels and tread-plates.
559:
modified XJ40s resulting in the XJR. Jaguarsport was also formed as a partnership between TWR and Jaguar. The first XJR, the XJR 3.6 L (3,590 cc), had extensive appearance changes coupled with stiffer suspension,
540:
The 2.9 Engine was, as in earlier years the 2.8 XK-engine, sized to match road-tax regulations in some
European Countries like Italy or France. In France cars with more than 3 litres of engine size had to pay a luxury tax.
444:
The original engines were the DOHC 3.6 and the SOHC 2.9. The DOHC 3.6 was revised and enlarged to 4.0 in 1990. It is still essentially an "AJ6", however. This was, as per usual, offered for the
672:
For the launch of the new X300 saloon for 1995, substantial revisions were made to the 4.0 L (3,980 cc) and 3.2 L (3,239 cc) AJ6 engines. The new design was called the
1151:
532:, and was prone to failure. The block is the same as the 3.6, with the crankshaft and pistons lowering the stroke to 74.8 mm (2.94 in). Only the 1986–1989
476:
with electronics within the distributor body. This early AJ6 ignition system is nearly identical to the system used on the XK engine in the Series III XJ6 cars. The
417:, and was introduced in 1984. It was only the third all-new engine ever designed by the company. The AJ16 evolution was replaced in 1996 with the Jaguar developed
591:
4,000 rpm, and proved a popular engine in Europe (sales outnumbered 4.0 L (3,980 cc) saloons roughly 4:1) but was not exported to
America.
32:
1349:
810:
90:
827:
62:
47:
767:
428:
in half to build a V6, or possibly a V8, but chose instead to develop a new inline six. The cylinders are inclined, as in a
544:
Unlike all other AJ6's, the 2.9l used Bosch LH Jetronic fuel injection and EZ-K ignition (rather than Lucas 9 or 15CU EMS)
472:
versions of the 3.6 L (3,590 cc) AJ6 as used in the 1984 - 1987 XJ-S cars had a conventional distributor type of
1354:
69:
484:
76:
328:
58:
1344:
1316:
788:
483:
system on the 3.6 L (3,590 cc) AJ6 engines in these early XJ-S cars sensed engine load using a
556:
727:
M90 blower to boost output to 240 kW (326 PS; 322 hp) and 512 N⋅m (378 lb⋅ft)
1115:
803:
582:
The prototype Jaguar XJ41/42 sports car used a twin-turbo version of the AJ6 4.0, developing 330bhp.
163:
125:
746:
661:
418:
382:
378:
175:
138:
1067:
599:
83:
741:
736:
724:
603:
529:
425:
414:
368:
279:
259:
1190:
656:
622:
595:
567:
1990 XJRs had the upgraded 3L engine with the old style body-kits, and appearance changers.
477:
449:
303:
1321:
1185:
796:
473:
340:
201:
1195:
1175:
1170:
1140:
1135:
1106:
1101:
480:
323:
306:
1338:
1275:
1266:
1261:
1205:
1200:
1180:
1090:
1085:
1055:
1050:
1045:
1017:
561:
413:
in the 1980s and 1990s. The AJ6 was designed to replace the successful and long-used
406:
316:
228:
191:
292:
Twin-turbo version developing 330bhp was developed for the prototype XJ41 sports car
1040:
1035:
1030:
1023:
716:
655:
Both the 3.2 and 4.0 were substantially revised for the 1995 launch of the renewed
606:
410:
287:
274:
217:
432:, by 22 degrees. It uses an aluminium block to reduce weight, and has an optional
598:, the Jaguar AJ6 was used by Aston Martin as well (both companies being owned by
460:
The 3.6 L (3,590 cc) was the first AJ6 engine, debuting in 1983 on the
1310:
1303:
1282:
1237:
823:
819:
468:
252:
143:
21:
1224:
1060:
1005:
683:
616:
495:
461:
445:
239:
168:
1217:
1212:
1161:
1156:
1124:
720:
704:
699:
694:
689:
644:
638:
633:
628:
533:
513:
507:
501:
39:
719:
version of the 4.0 L (3,980 cc) AJ16 was released in 1994 in the
1248:
403:
429:
350:
1012:
676:
to reflect the major differences between it and the original AJ6.
1072:
525:
465:
433:
297:
249:
244:
792:
15:
768:"Concepts and Prototypes : Jaguar XJ41/XJ42 (1982-1990)"
43:
374:
364:
359:
349:
339:
334:
322:
312:
296:
286:
273:
268:
258:
238:
227:
216:
200:
190:
174:
162:
157:
149:
137:
132:
118:
345:201–322 hp (150–240 kW; 204–326 PS)
804:
8:
48:introducing citations to additional sources
811:
797:
789:
124:
115:
839:
113:Reciprocating internal combustion engine
38:Relevant discussion may be found on the
758:
602:at the time). This version featured an
859:
856:
853:
850:
524:The 2.9 L (2,919 cc) used a
436:head for higher efficiency and power.
1021:
847:
679:Cars using the 4.0 and 3.2 included:
612:Cars using the 4.0 and 3.2 included:
355:325–512 N⋅m (240–378 lb⋅ft)
7:
842:
424:Jaguar had considered cutting their
14:
31:relies largely or entirely on a
20:
766:Adams, Keith (28 March 2021).
1:
490:Vehicles using the 3.6 were:
448:before it was built into the
625:(modified, supercharged 3.2)
594:Following the launch of the
206:74.8 mm (2.94 in)
1371:
1320:
1308:
1301:
1243:
1241:
1146:
1110:
1094:
1089:
1022:Production interrupted by
485:Manifold Absolute Pressure
396:Advanced Jaguar 6-cylinder
212:102 mm (4.02 in)
186:4.0 L (3,980 cc)
184:3.6 L (3,590 cc)
182:3.2 L (3,239 cc)
180:2.9 L (2,919 cc)
1350:Gasoline engines by model
1315:
1293:
1290:
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1270:
1265:
1260:
1258:
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1252:
1236:
1234:
1232:
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1216:
1211:
1209:
1204:
1199:
1194:
1189:
1184:
1179:
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1169:
1167:
1160:
1155:
1150:
1148:
1144:
1139:
1134:
1132:
1128:
1123:
1121:
1119:
1114:
1112:
1105:
1100:
1098:
1084:
1082:
1080:
1078:
1076:
1071:
1066:
1059:
1054:
1049:
1044:
1039:
1034:
1029:
1027:
1016:
1011:
1009:
837:
664:(XK8 and XJ8 in 1996/7).
210:92 mm (3.62 in)
208:83 mm (3.27 in)
196:91 mm (3.58 in)
123:
999:
996:
993:
990:
987:
984:
981:
978:
975:
972:
969:
966:
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951:
948:
945:
942:
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936:
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927:
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906:
903:
900:
897:
894:
891:
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885:
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879:
876:
873:
870:
867:
864:
826:timeline, 1930s–1970s—
1309:Independent (renamed
668:4.0 / 3.2 (1994–1997)
1355:Straight-six engines
695:Jaguar XJ6 Sovereign
508:Jaguar XJ6 Sovereign
44:improve this article
747:Jaguar AJ-V6 engine
398:), and the similar
282:M90 (some versions)
59:"Jaguar AJ6 engine"
1332:
1331:
1327:
1326:
830:
742:Jaguar V12 engine
737:Jaguar XK6 engine
530:Jaguar V12 engine
415:Jaguar XK6 engine
388:
387:
260:Compression ratio
109:
108:
94:
1362:
1091:Mark 2, 240, 340
840:
828:
813:
806:
799:
790:
783:
782:
780:
778:
763:
700:Jaguar XJ6 Sport
657:Jaguar XJ (X300)
634:Jaguar Sovereign
623:Aston Martin DB7
596:Aston Martin DB7
128:
116:
104:
101:
95:
93:
52:
24:
16:
1370:
1369:
1365:
1364:
1363:
1361:
1360:
1359:
1335:
1334:
1333:
1328:
1322:British Leyland
1176:Jaguar 3½ litre
1141:Jaguar 2½ litre
1107:Jaguar 1½ litre
833:
817:
787:
786:
776:
774:
765:
764:
760:
755:
733:
713:
670:
653:
588:
586:3.2 (1990–1994)
550:
548:4.0 (1989–1994)
537:the DOHC 4.0).
522:
474:ignition system
458:
442:
381:
253:4 valves x cyl.
248:
247:2 valves x cyl.
211:
209:
207:
185:
183:
181:
153:1984–1996
114:
105:
99:
96:
53:
51:
37:
25:
12:
11:
5:
1368:
1366:
1358:
1357:
1352:
1347:
1345:Jaguar engines
1337:
1336:
1330:
1329:
1325:
1324:
1319:
1314:
1307:
1300:
1296:
1295:
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1064:
1063:
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1053:
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1046:E-Type S1
1043:
1038:
1033:
1028:
1026:
1020:
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793:
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784:
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739:
732:
729:
723:which used an
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687:
669:
666:
652:
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647:
642:
636:
631:
626:
620:
587:
584:
549:
546:
528:head from the
521:
518:
517:
516:
510:
504:
498:
481:fuel injection
457:
454:
441:
438:
407:piston engines
386:
385:
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372:
371:
366:
362:
361:
357:
356:
353:
347:
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343:
337:
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331:
326:
324:Cooling system
320:
319:
314:
310:
309:
307:fuel injection
301:
294:
293:
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284:
283:
277:
271:
270:
266:
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262:
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242:
236:
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221:
218:Cylinder block
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204:
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166:
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159:
155:
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147:
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141:
135:
134:
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112:
107:
106:
42:. Please help
28:
26:
19:
13:
10:
9:
6:
4:
3:
2:
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1356:
1353:
1351:
1348:
1346:
1343:
1342:
1340:
1323:
1318:
1312:
1305:
1302:Independent (
1298:
1297:
1284:
1277:
1268:
1263:
1250:
1247:
1246:
1239:
1226:
1223:
1222:
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1003:
863:
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583:
580:
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572:
568:
565:
563:
562:anti-roll bar
558:
554:
547:
545:
542:
538:
535:
531:
527:
519:
515:
511:
509:
505:
503:
499:
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491:
488:
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467:
463:
455:
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431:
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408:
405:
401:
397:
393:
384:
380:
377:
373:
370:
367:
363:
358:
354:
352:
351:Torque output
348:
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338:
333:
330:
327:
325:
321:
318:
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302:
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261:
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246:
243:
241:
237:
233:
230:
229:Cylinder head
226:
222:
219:
215:
205:
203:
202:Piston stroke
199:
195:
193:
192:Cylinder bore
189:
179:
177:
173:
170:
167:
165:
164:Configuration
161:
156:
152:
148:
145:
142:
140:
136:
131:
127:
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117:
111:
103:
92:
89:
85:
82:
78:
75:
71:
68:
64:
61: –
60:
56:
55:Find sources:
49:
45:
41:
35:
34:
33:single source
29:This article
27:
23:
18:
17:
1294:XJ41 / XJ42
1191:Mk VIII
1024:World War II
843:
775:. Retrieved
771:
761:
717:supercharged
714:
678:
673:
671:
654:
611:
607:supercharger
593:
589:
581:
577:
573:
569:
566:
555:
551:
543:
539:
523:
489:
459:
443:
426:existing V12
423:
419:AJ-V8 engine
399:
395:
391:
389:
383:Jaguar AJ-V8
379:Jaguar AJ-V6
341:Power output
329:Water cooled
288:Turbocharger
275:Supercharger
176:Displacement
139:Manufacturer
110:
100:October 2018
97:
87:
80:
73:
66:
54:
30:
1311:Jaguar Cars
1304:SS Cars Ltd
1186:Mk VII
1171:SS 3½ litre
1136:SS 2½ litre
1102:SS 1½ litre
1073:SS 1 / SS 2
824:Jaguar Cars
820:SS Cars Ltd
645:Daimler Six
496:Jaguar XJ-S
450:XJ40 saloon
411:Jaguar cars
365:Predecessor
144:Jaguar Cars
1339:Categories
1299:Ownership
1196:Mk IX
753:References
721:Jaguar XJR
690:Jaguar XJ6
686:(4.0 only)
684:Jaguar XJS
641:(4.0 only)
639:Jaguar XJR
629:Jaguar XJ6
619:(4.0 only)
617:Jaguar XJS
534:Jaguar XJ6
512:1986–1989
506:1986–1989
502:Jaguar XJ6
500:1986–1989
494:1984–1989
369:Jaguar XK6
360:Chronology
269:Combustion
240:Valvetrain
169:Straight-6
150:Production
119:Jaguar AJ6
70:newspapers
1201:Mk X
1181:Mk V
1056:E-Type S3
1051:E-Type S2
464:. It had
375:Successor
313:Fuel type
234:Aluminium
223:Aluminium
40:talk page
772:AROnline
731:See also
409:used by
404:inline-6
231:material
220:material
133:Overview
1218:XJ12 S2
1213:XJ12 S1
831: »
777:21 June
705:Daimler
514:Daimler
469:4-valve
430:slant-6
84:scholar
1276:E-Type
1267:D-Type
1262:C-Type
1249:Racing
1225:Sports
1162:XJ6 S2
1157:XJ6 S1
1116:S-Type
1086:Mark 1
1068:Saloon
1018:SS 100
1006:Sports
860:1970s
857:1960s
854:1950s
851:1940s
848:1930s
402:, are
335:Output
317:Petrol
300:system
264:9.75:1
158:Layout
86:
79:
72:
65:
57:
1291:XJ-C
1041:XK150
1036:XK140
1031:XK120
1013:SS 90
725:Eaton
711:AJ16S
662:AJ-V8
604:Eaton
478:Lucas
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