Jaguar Engines & transmissions - Jaguar Forums

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39, 40, 42, aj27, aj27s, conversion, engine, forum, head, jaguar, lincoln, ls, motor, sale, swap

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Quick Reference: Swap your 4.0 block with a 4.2

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avos on Aug 31, 2009

May 5, 2022 12:35 AM
by datary56

91

100,938

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Remanufacturing - Automatic Transmissions

GGG on Mar 31, 2014

Apr 16, 2014 10:30 AM
by ricksprjag

4

19,547

27, diesel, discussion, engine, forum, jaguar, performance, upgrade

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Jaguar engines & transmissions section

JimC64 on Jan 12, 2010

Jan 12, 2010 04:05 AM
by JimC64

0

15,176

Normal Threads

Rear main seal AJ126, different sizes?

Adam Deermann on Apr 2, 2026

Apr 2, 2026 01:33 AM
by Adam Deermann

0

167

AJ 126 flexplate bolt access

leftlanetruckin on Jan 7, 2026

Apr 2, 2026 01:29 AM
by Adam Deermann

1

446

4.0 to 4.2 SC swap

damurna7 on Dec 31, 2025

Dec 31, 2025 07:39 PM
by damurna7

0

401

Camshaft specifications AJ-V8 4.0L & 4.2L

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Cambo on Apr 18, 2015

Nov 8, 2025 03:51 AM
by steve_k_xk

46

43,917

1947, 1970, 1987, 42, engine, iii, jaguar, locations, numbers, oil, rear, replacement, seal, series, upgrade, xk

The XK engine 1947-1987

Fraser Mitchell on Feb 2, 2010

Aug 30, 2025 02:29 PM
by Ycymry

17

32,147

AJ126 Rebuild

brownfox on Nov 15, 2023

Aug 20, 2025 11:35 AM
by brownfox

15

7,740

Purchased a 3 1/2 engine with a Moss transmission

jayd2 on Feb 28, 2024

Jun 25, 2025 09:07 PM
by sony2000

4

3,503

Difference between AJ16 and AJ16 supercharged

RoseGardener on Jun 9, 2025

Jun 9, 2025 03:50 PM
by Cafcpete

1

1,155

1999, 290hp, 40l, aj27, aj30, aj34, ajv8, ajv8gen, engine, engines, ford, iii, jaguar, makes, v8, vs

AJ-V8 Engine

super_jag on Feb 1, 2010

Apr 19, 2025 07:00 AM
by pj3426

17

114,134

Forged internals for 5.0 V8 AJ133?

Mr Pantera on Jan 13, 2025

Mar 7, 2025 08:49 AM
by clubairth1

5

3,373

EGR impact on the air-fuel ratio (AJ33S)

SteFn000514 on Feb 1, 2025

Feb 6, 2025 10:58 AM
by Just Me

3

1,816

Ran hot

ycjones on Jan 30, 2025

Jan 30, 2025 06:34 PM
by NBCat

1

1,396

2000, 30, duratec, engine, ford, forum, jaguar, kit, motor, review, supercharged, supercharger, superchargers, type, v6

New Jaguar 3.0 supercharged v6 origin?

JaguarXKR on Apr 21, 2013

Jan 9, 2025 09:31 AM
by clubairth1

18

37,724

Torque settings aj126 mains and rods

Adam Deermann on Dec 21, 2024

Dec 21, 2024 03:30 AM
by Adam Deermann

0

1,881

Valve cover gaskets replacement on a 2003 S type 3.0 6 cylinder

Melanimal on Dec 18, 2024

Dec 18, 2024 12:30 PM
by NBCat

1

1,614

Jaguar xf motor install range over parts swap over ?aj126

rangemb3 on Mar 13, 2024

Dec 15, 2024 06:05 AM
by Asg

9

4,945

AJ126 on Range Rover

X-mac on Nov 25, 2024

Nov 25, 2024 01:56 AM
by X-mac

0

1,936

How to tell the AJ26 engine from AJ27

brantman on Jan 23, 2015

Oct 8, 2024 04:21 PM
by Cyrilmoto

9

25,785

Jaguar 5.0 AJ133 Supercharged Rebuild (blown piston x2) Let the fun begin!

djmccoy77 on Oct 8, 2024

Oct 8, 2024 10:24 AM
by djmccoy77

0

1,908

Moved

2010 xf no crank no start! Help?

FlippinJag on Sep 14, 2024

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JV6, AJ61 X type-R and Supersport

Count Iblis on Mar 12, 2020

Aug 29, 2024 04:18 AM
by MoscowLeaper

8

7,610

15 XK Supercharger addition- is it Feasible?

Grizzly, on Aug 28, 2024

Aug 28, 2024 04:02 PM
by Grizzly,

0

1,610

89 jag won't start had in shop recently ignition coil

nateghomz64 on Jan 9, 2024

Apr 24, 2024 05:47 PM
by Jim Kristeff

1

1,742

96, adaptor, aj16, bellhousing, boosting, engine, faq, horsepower, jaguar, supercharged, swap, xj, xjr, xjs, xke

Supercharged XJS

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1 2)

Gandalfthegray on Jun 20, 2011

Mar 22, 2024 10:02 AM
by Mguar

34

40,371

16cu, 1983, arduino, computer, custom, ecu, engine, ii, jaguar, microcontroller, pinout, sale, series, xj6, xjs

Custom Jaguar L-Jetronic 5CU ECU

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agilly1989 on Mar 21, 2012

Mar 5, 2024 06:43 AM
by Peter3442

113

39,147

AJ126s YT Strip down from I Do Cars

bydand on Dec 25, 2023

Dec 25, 2023 02:01 PM
by bydand

0

1,889

5.0l SC valve guides

Pumpkineater_69 on Aug 29, 2023

Aug 29, 2023 07:02 AM
by Pumpkineater_69

0

2,222

Overview of Jag differentials

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Cambo on Jan 13, 2015

Aug 15, 2023 07:30 PM
by Panthro

107

71,750

accuator, adjusting, adjustment, bell, bypass, dvd, eaton, jaguar, kenne, kenney, roughting, supercharger, tundra, vaccum, valve

Supercharger Bypass Valve?

Cambo on Jul 29, 2012

Aug 6, 2023 10:25 AM
by Pipes

10

27,856

Is there a low temperature thermostat option for the Jaguar 5.0?

Cliff5.0SC on Sep 24, 2016

Jan 31, 2023 11:00 AM
by trkyam

1

3,562

1983 or 1987 4.2L rebuild

Proquest on Jan 30, 2023

Jan 30, 2023 03:08 PM
by Proquest

0

2,204

Colder sparkplug for s/c AJ-V8 ?

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Cambo on Feb 18, 2017

Jan 15, 2023 12:41 PM
by Aarcuda

75

35,506

AJ133SC tear down

OzXFR on Jan 7, 2023

Jan 7, 2023 10:44 PM
by OzXFR

0

3,100

Low temperature thermostat for 4.2-R engines?

SteFn000514 on Dec 6, 2022

Dec 12, 2022 01:09 PM
by JagV8

1

2,503

1967 Jaguar 420

socialyfe on Nov 21, 2022

Nov 21, 2022 07:44 PM
by socialyfe

0

2,457

Direction of Engine Rotation

SleekJag12 on Sep 3, 2022

Sep 5, 2022 06:05 AM
by SleekJag12

1

4,015

ECU tuning software 5.0 SC

RainsFather on Jan 28, 2015

Jul 21, 2022 04:12 PM
by boostedxf

15

15,254

4.2 Litre min head thickness

Napoleon Solo on Jun 8, 2022

Jun 8, 2022 01:01 AM
by Napoleon Solo

0

2,640

2000, 2003, disable, disabling, discovery, ecu, eegr, egr, jag, location, resistor, triangle, type, valve, xkr

Disable EGR Valve

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1 2 3)

super_jag on Mar 12, 2010

May 10, 2022 12:28 AM
by avos

59

59,936

LR4 misfire all CYL

akafred on Mar 31, 2022

Mar 31, 2022 07:50 AM
by akafred

0

2,515

Got screwed again, big time!

avos on Jan 13, 2020

Mar 26, 2022 08:02 AM
by avos

11

5,900

Mains & rod bearings

Kensampson on Mar 2, 2022

Mar 16, 2022 04:59 PM
by kansanbrit

7

3,620

Interchangeability? AJ133 from Jag into LR4

LR4 GenIII on Jan 27, 2017

Mar 16, 2022 04:57 PM
by kansanbrit

8

21,620

5.0 SC engine build

Kensampson on Feb 27, 2022

Feb 27, 2022 06:07 PM
by Kensampson

0

2,958

Larger MAF for 4.0 and 4.2 Supercharged engines

avos on Dec 20, 2020

Feb 21, 2022 12:50 AM
by Addicted2boost

5

5,303

1989, 1990, 2001, 53, 53l, black, book, convertible, engine, good, jaguar, mods, mpg, sale, turbo, v12, xjs

Question about 5.3L V12 Engines for XJS

Safari on Oct 11, 2012

Jan 31, 2022 06:54 PM
by Doug

7

7,285

PRO-M 92mm MAF

Broeils on Jan 22, 2022

Jan 28, 2022 02:09 AM
by avos

1

4,121

Differences In Supercharger Systems from AJ27 to AJ33

mapleridge on Jan 27, 2016

Nov 10, 2021 10:12 AM
by Chirpy

10

29,055

How to disconnect fuel rail inlet hose-'07 XK

Rey on Nov 16, 2012

Oct 18, 2021 11:30 AM
by Vinsanity

4

4,617

Upgrades for a 6.0l V12?

Alphatrev on Aug 25, 2019

Jul 7, 2021 10:11 AM
by Mguar

6

13,986