Aj6 engine improvements. THE JAGUAR AJ6 ENGINE - 3.

Aj6 engine improvements May 14, 2024 · The initial engine offering was a powerful and proven 4. That said, If you fabricated an intake manifold, and modified the distributor, I see no reason that it would not work. OR This is a quaint little story to show how using common sense , a bit of brains, very little cash, avoiding buying bullshit stuff from unscrupulous vendors, we can improve the original 6 cylinder XJS so much, to make it faster, nicer to drive and use 1 gallon every 60 miles less gas than it's thirsty heavyweight THE JAGUAR AJ6 ENGINE - 3. It was designed to replace the much-loved Jaguar XK6 engine, and was introduced in 1984. 7L conversion for my older 4. The AJ16 evolution was replaced in 1996 with the Jaguar developed AJ-V8 engine. Please note: New website at aj6engineering. 1). Jan 20, 2003 · To: v12-engine@jag-lovers. On Tue, Jan 20 THE JAGUAR AJ6 ENGINE - 3. 13. SWAPPING TO A LATER ENGINE TYPE. A good set of fast road cams, without more, will get you about 25 extra HP. The table of contents following this introduction lists the major components and systems together with the section in which they are contained. In reply to a message from Wayne Estrada sent Thu 23 Jan 2003: This leads me to an important question for the list, which may be better cross-posted to the Pub : What is the fastest way from 0-60 with an Nov 24, 2010 · I have recently replaced the 3. Work on producing a running prototype commenced and by November 1972, a slant 6 engine was tested in a vehicle, recording 150 bhp at 4,500 rpm and 171 bhp at 5,500 rpm. 0-litre V12 engine introduced. The XJ6 quickly gained recognition for its luxurious interior Oct 16, 2022 · Starting under the forward-tilting bonnet: The DOHC AJ6 straight-six engine that replaced Jaguar’s legendary XK I-6 (the engine that originally powered our engineless project car) offered improvements in terms of weight and efficiency because its block and 24-valve head were light alloy, rather than cast-iron/aluminum. So here it is for the whole list. org Sent: Thursday, January 23, 2003 3:55 PM Subject: Re: [v12-engine] Objective report on my AJ6 Engineering mods. I purchased the SE Large Throttle Kit (which includes a CPU upgrade as well as enlarged throttle bodies) and the TT Exhaust System. 5:1 outside the US) and a swirl combustion head designed by Porsche expert Michael May, was introduced in July 1981 and indicated by the letters "H. It can only improve the engine, and it IS true that Jag engines can improve with porting, after all History has shown the AJ6 engine to be a very reliable power unit and it responds well to breathing improvements to the induction and exhaust systems in much the same way as the older V12 and XK engines. Jan 7, 2009 · It was designed to replace the much-loved Jaguar XK6 engine, and was introduced in 1984. 6L engine had a hot wire Nov 17, 2007 · The head bolt spacing for the AJ6 engine is 88 mm side-to-side and 105 mm front-to back. 0 LITRE History has shown the AJ6 engine to be a very reliable power unit and it responds well to breathing improvements Jan 21, 2004 · The “performance” parts from AJ6 Engineering for the V12 or the AJ6 engines is very one dimensional. 0 LITRE History has shown the AJ6 engine to be a very reliable power unit and it responds well to breathing improvements THE JAGUAR AJ6 ENGINE - 3. head on some versions of the AJ6. uk. Jan 14, 2012 · The two engines fitted with these brackets went on to complete a season's racing and the cars they powered were quite successful in their class in terms of performance. The AJ6 (Advanced Jaguar 6-cylinder), and the similar AJ16, was an inline-6 piston engine used by Jaguar in the 1980s and 1990s. It seems limited to me. Jaguar AJ6 Engine and ZF 4 speed auto complete with exhaust, Ecm and loom, in car running can be test driven low klm, this is a complete setup to convert your tired old broken v12 to a later 6cyl Jaguar AJ6 Engine - Car Engines & Engine Parts - Yarra Glen, Victoria | Facebook Marketplace Circumstances demanded a very substantial improvement yet the serious financial difficulties of British Leyland meant there was hardly any budget to work with. 9l used Bosch LH Jetronic fuel injection and EZ-K ignition (rather than Lucas 9 or 15CU EMS) A very efficient and compact combustion chamber was achieved by closing up the angle between the valves from the 47 degrees of the AJ6 and AJ16 engines to a more ideal 28 degrees, accepting the slight drawback that the head bolts were situated right under the camshafts so the heads could not be totally pre-assembled. – The original message included these comments: I’ve seen several articles praising the power and responsiveness of the Jaguar AJ6 engine. 0 LITRE History has shown the AJ6 engine to be a very reliable power unit and it responds well to breathing improvements Jul 12, 2006 · I have 5 or six of these engines myself and plan on doing this conversion with a manual Borg-Warner T5 transmission behind the AJ6 engine. 0 litre AJ6 engines with ZF four speed automatic transmissions, at extra cost. PERFORMANCE UPGRADES. Engine no. By removing the coil connectors, it seemed that the timing of cylinder 5 was the culprit. I then replaced all plugs and swapped coils between #4 & #5, with no improvement. co. jag-lovers. There “magic” solution always seems to be some combonation of their remapped ECU and the “torque-plus” intake manifold parts. Unlike all other AJ6's, the 2. The AJ16 was repla Jaguar AJ6 & AJ16 Engines Straight-six AJ6 and AJ16 Engines. 1994. A new engine was completely out of the question - experiments which eventually would lead to the AJ6 engine were in an embryonic state yet to drop the V12 and fall back on the ageing XK The turbocharged engine is slightly better off in this respect because the expansion process continues via the turbine but the exhaust valves will still have to withstand high temperature gases. stock pistons - or balanced light weight options; stock con rods - lightened balanced or alternative forged options; crankshaft - any possible modifications Experience in a Book Engine Maintenance . The origins of the Jaguar V12 engine go right back to about 1954 when it was being thought about sufficiently seriously for drawings to have been produced even though no hardware was created. Production: 1983 - 1996. Sep 30, 2015 · I just wanted to post a message about upgrades I purchased from AJ6 Engineering. 0 litres with power upped to 223bhp. THE JAGUAR AJ6 ENGINE - 3. The AJ16 was replaced in 1996 with the Jaguar developed Jaguar The XK Jaguar engine, created by some of the best engineers in the business at the time, certainly ranks amongst the classic engine designs of all time. 2 versus say the 4L? – Andy Marsh (1993 XJ6) –Posted using Jag-lovers JagFORUM [forums. After this time the 3. 0L up to 4. 5L or so. 2 liter) use the – Mar 23, 2020 · Best engine version ever made in Jaguar XJS is the AJ6 3. 6 and 4. In addition, the ECM communicates with other powertrain systems and vehicle systems. 6 litre was replaced with the 4. 2-litre version of the twin-cam engine. Sep 29, 2003 · in similar models. 0 LITRE History has shown the AJ6 engine to be a very reliable power unit and it responds well to breathing improvements Jan 5, 2005 · I have not seen this done. AJ6 Engineering once offered the OPPOSITE cam, lower duration, smoother idle, better fuel economy, slightly less HP but a LOT Dec 13, 2015 · If one were to rebuild an ideal 4. And what a good marriage it is. They don’t mention alternative cams, head porting, or any other types of performance modifications for these engines. Even when you look at the orinal AJ6 prototypes, they were always FI, even the turbos. Mar 28, 2004 · apply to all internal combustion gasoline engines. The design of the exhaust system is dominated by considerations such as refinement and, of course, emissions legislation. 1991. Dec 7, 2024 · The AJ6 (Advanced Jaguar 6cylinder), and the similar AJ16, was an inline6 piston engine used by Jaguar in the 1980s and 1990s. Dec 9, 2006 · I was just able to purchase what I believe in the US is a fairly rare car. The original rear di This is a modified 1976 XJ6. AJ6 Engineering, 60, Henshall Road, Bollington, Macclesfield, Cheshire SK10 5DN, England Email aj6engineering@ntlworld. It has 9CU engine management on board, totally different than the one used in pre 1987 which were accurately mentioned by BigCatXJS as not entirely production ready. An AJ6 engine from a 1990 XJ6 was installed in place of the original XK engine, bumping HP from 176 to 221. 2L XK-series engine. 0 litre engine and continued until the end of production. AJ6 Engineering provides products to improve the responsiveness and performance of your modern classic Jaguar (E Type, XJS, XJ6, XJ12 & early V8s). 0 AJ6 engines? or if its a 4. The supercharged aircraft engine had another way of making use of this unspent energy - ejector exhausts which added forward thrust. It was designed to replace the muchloved Jaguar XK6 engine, and was introduced in 1984. Many people think that the exhaust system on a modern Jaguar is a little too quiet for a car with high performance pretensions and it is quite possible to obtain a reasonable increase in performance allied to a pleasing exhaust note without becoming an antisocial monster. Mismatches in early Jaguar AJ6 engines are important, and a little bit of porting can really do no harm, seems easy to do when doing a head job, even without doing it. 0, its an AJ16 by default? M⚙t⚙rsF⚙rum M⚙⚙F Sadly all of these improvements was not enough; Power went The 2. The AJ6 was designed to replace the successful and long-used Jaguar XK6 engine , and was introduced in 1984. 6L AJ6 engine and manual transmission. 1992. Can someone please tell me something about the 3. Production of closely related Aston Martin DB7 begins. The improvements are in reliability as well as economy & power. The spacing for the XK engine is 85 mm side-to side and 97 mm front-to-back. I'm toying with increasing the compression ratio. Can the AJ6 engine and transmission be easily fitted into an XJ6 THE JAGUAR AJ6 ENGINE - 3. Racers have been known to bore those out from 4. 2-liter inline-6, capable of propelling the car from 0-60 mph in a respectable 8. 9/3. 9 engine to the V12. : The H. H. ) have an air temperature sensor to apply retard at higher air temperatures - evidence surely that the safety margin is pared to the minimum and more advance would be risky. 0litre XJ40 models. E. Does anyone make a kit or can parts be purchased new. 0 LITRE History has shown the AJ6 engine to be a very reliable power unit and it responds well to breathing improvements . They had a bore and stroke of 90 mm x 100 mm giving the familiar size of 3. Nov 26, 1997 · AJ6’s performance improvement mods. The later XJ40 cars with the 3. The turbocharged engine is slightly better off in this respect because the expansion process continues via the turbine but the exhaust valves will still have to withstand high temperature gases. Mar 19, 2002 · I have read Roger Bywater’s opinions on the XJ-S List about the ‘upgradeability’ of the AJ6 engine, and I am wondering if there is anyone on the Modern List who has the engine modifications offered by AJ6 Engineering … The AJ6 (Advanced Jaguar 6-cylinder), and the similar AJ16, are inline-6 piston engines used by Jaguar cars in the 1980s and 1990s. The AJ16 was replaced in 1996 with the Jaguar developed Jaguar The AJ6 (Advanced Jaguar 6-cylinder), and the similar AJ16, was an inline-6 piston engine used by Jaguar in the 1980s and 1990s. Sep 11, 2009 · Does anyone know if the AJ engine uses the same engine mount location as the XK engines? If the mounts are different will teh front crossmember from an XJ40 or XJS fit the older series 2 shell? Are the mounts the same between the AJ16 and AJ6 engines. Nov 28, 2004 · The TVR Speed Six/AJP6 engines are surprisingly (or not surprisingly) similar to Jaguar's AJ6/16 engine series. The newcomer’s ‘chassis’ took all that was good about earlier XJs and refined it further, notably moving from the tricky-to-service inboard rear brakes to a more conventional Oct 9, 2006 · Also, what he shows is nothing new. Oct 8, 2002 · The AJ6 engine was fitted up to May 91 in 3. PRICES. Our TT (Twin Tube) system consists of tuned length resonant pipes which play an active part in the scavenging process and help to draw exhaust gases out of the engine. Really there was not a lot of point in soldiering on with makeshift solutions when what was really need was a completely new engine, but this embryonic head 4. The AJ16 was replaced in 1996 with the Jaguar developed Jaguar Jan 10, 2023 · The Series 3 was still relying on the XK engine originally developed in the 1940s, which meant the new AJ6 would be only the third new engine in Jaguar’s history. 6 engine in my XJ-S with another one, which then developed head gasket symptoms. 0-litre AJ6 engine, outboard brakes and other detail changes, including hyphenless rebrand to XJS. History has shown the AJ6 engine to be a very reliable power unit and it responds well to breathing improvements to the induction and exhaust systems in much the same way as the older V12 and XK engines. The XJ40 range was (literally) extended in 1992 with the addition of the long-wheelbase version, marketed as the Majestic and gaining five inches in the rear door 4. Feb 4, 2004 · Manual transmissions can be specified, as can the later 3. – The original message included these comments: The AJ6 pistons are spaced further apart than the pistons in the XK engine. Installation of an HE or 6 litre engine. A very efficient and compact combustion chamber was achieved by closing up the angle between the valves from the 47 degrees of the AJ6 and AJ16 engines to a more ideal 28 degrees, accepting the slight drawback that the head bolts were situated right under the camshafts so the heads could not be totally pre-assembled. The AJ6 was only the third engine ever designed by the company. The ECM then processes the sensor information and the information received AJ6 4. pdf) or read online for free. The AJ6 was designed to replace the successful and long-used Jaguar XK6 engine, and was introduced in 1984. The Cooling System. 8 XK-engine, sized to match road-tax regulations in some European Countries like Italy or France. xke forum suggested using a system from a later v12. pounds of torque. Whilst earlier 6 cylinder E Types had employed a cross-flow radiator the V12 reverted to a downward flow, single pass, radiator (Fig. org]– Visit the Jag Lovers AJ6 Engineering, 60, Henshall Road, Bollington, Macclesfield, Cheshire SK10 5DN, England Email aj6engineering@ntlworld. ECU, induction and exhaust system upgrades. 11. AJ6 engine upgraded to AJ16 specification. At 2000 RPM the V-12 engine has approx. randy kassed wrote: i have seen some discussions on a few people putting an aj6 engine in a s3. The motivation, of course, was to carry on from the success of the Le Mans winning XK which clearly could not long remain fully competitive in top league Jan 17, 2003 · noticed no improvement in performance or economy. A TT system can therefore increase performance much more than the big bore system and can do so even in the mid-range speeds. 1995 THE JAGUAR AJ6 ENGINE - 3. NON-H. – The original message included these comments: Hi troops, have almost made the decision to buy a 3. Regards THE JAGUAR AJ6 ENGINE - 3. (High Efficiency) engine, with 11. We produce uprated induction systems for the V12, a range of exhaust systems and we reprogram electronic control units, which we also test and repair. It is a straight six engine, with a pair of chain driven overhead camshafts and four valves per cylinder. – The original message included these comments: Does anyone here have experience putting carbs on an AJ6 engine or Before delving into that it is worth looking briefly at the contribution AJ6 Superchargers makes to our products for Jaguars. Someone suggested a fuel injection system from a v12 HE would make the most sense. 0 LITRE History has shown the AJ6 engine to be a very reliable power unit and it responds well to breathing improvements The great British ART of detuning Jaguar engines by Mr Bywater, AJ6 Engineering. Those cams will probably get you 25 extra HP at the expense of low-end torque. Thoughts? Rob– Rob Hathaway Essex, CT, United States Feb 27, 2006 · Were there any 4. I am curious about your statement that Jaguar revised valve clearance specs to effect a smoother idle. 0 litre engine replaced the AJ6 4. 0 LITRE History has shown the AJ6 engine to be a very reliable power unit and it responds well to breathing improvements Feb 1, 2009 · I have a 74 xke with stromberg carburation and would like to convert to fuel injection. " on the back of the car in place of the former "V12" emblem. SEEEEERIOUS ENGINE MODS: There have been experiments to adapt the 4-valve DOHC head from the Jaguar AJ6 2. This potent engine, coupled with a refined suspension system, provided a thrilling driving experience without compromising comfort. May 26, 2016 · carbed engine, but presume it’s not difficult or expensive. 8 litres and introduced the idea of the head bolts passing through the cam bearings, a feature of the AJ6 engine. 0 AJ6 power plant and its associated `J`- Gate Automatic Gearbox. The AJ6 (Advanced Jaguar 6-cylinder), and the similar AJ16, are inline-6 piston engines used by Jaguar cars in the 1980s and 1990s. 0 litre AJ6 engine. Jaguar had considered cutting the V12 in half to build a V6, or possibly a V8, but chose instead to develop a new AJ6 Engineering provides products to improve the responsiveness and performance of your modern classic Jaguar (E Type, XJS, XJ6, XJ12 & early V8s). Thank you DWOMBY,fantactic photos, I checked out his logs, The engine management system is centered around a digital engine control module (ECM). Jaguar had considered cutting the V12 in half to build a V6, or possibly a V8, but chose instead to develop a new THE JAGUAR AJ6 ENGINE - 3. Given the early head gasket failures and the later gasket design improvement and increase in the torque figures, I would personally go with the higher (59-61 Nm) figure, PLUS 90 degree rotation. 2, 3. Always a heavy engine, it nevertheless was able to achieve remarkable competition successes in the 1950s and as a volume production engine it was pretty much in a class of its own for the next WELCOME TO AJ6 ENGINEERING. It is a 1985 european XJS with the 3. It is relevant that most Jaguar engines with mapped ignition advance (Marelli V12, hot wire AJ6, etc. Facelift introduced, with 4. 6. 2L 1992 XJ40. Aug 19, 2013 · In reply to a message from Jim G sent Mon 19 Aug 2013: AJ6 ( XJ40 ) engine and gearbox into a Series 2. I was recently asked by another Jaguar owner to design a bracket for AJ6 engines. The fuel injected AJ6 engine is exceptionally smooth and quiet, providing instant performance when required. 0 LITRE History has shown the AJ6 engine to be a very reliable power unit and it responds well to breathing improvements Based upon a 1967 example, this car on offer has been re-engineered to take the 1990s 4. While the rest of the world was migrating toward tidy V-6s, the Coventry crew stuck by what it knew best, investing $45 million and a decade of R&D into a new 3590-cc inline-six, only the third all-new engine that Jaguar had ever The AJ6, and the similar AJ16, are inline-6 piston engines used by Jaguar cars in the 1980s and 1990s. Are all AJ engines with a manual box fitted with a Getrag gearbox or do some use the LT77? THE JAGUAR AJ6 ENGINE - 3. The ECM receives input sig-nals from engine sensors to evaluate engine operating conditions. I’d like to minimize extensive modifiation and maximise ease of use and predictibility. At 2000 RPM the LS engine has almost 100 more ft. 6 seconds. They made a Big, Big improvement in performance and sound for the car. This was quite a severe test of an AJ6 engine to run at this level of ignition advance. Improvements worth doing at the same time to make the car really special. Apr 19, 2010 · manuals, from the early 3. The smaller AJ6 engines (2. pdf - Free download as PDF File (. 310 Newton meters (Nm) or 229 ft. 6 litre form in the XJS. VS. Coupled with its better trans, it goes very well with the XJs. This is the website of AJ6 Engineering, bringing an exceptionally high standard of technical expertise to the supply of Performance Parts, Electronic Control Units, our unique TT Tuned Exhaust Systems and associated items. At or above 1,000 RPM’s it smooths out (or is masked). Mar 5, 2007 · It was designed to replace the much-loved Jaguar XK6 engine, and was introduced in 1984. It was not until June 94 that the AJ16 4. 5:1 compression (12. Dennis Priddle, a well known name from the world of Dragster racing, 'IS' AJ6 Superchargers and uses his considerable engineering skills to produce the special high torque manifolds for V12, AJ6 and XK engines. Oct 4, 2022 · That’s when the AJ6 engine was uprated to 3980cc and 223bhp, while 1990 saw the single-cam 2. pounds of torque that the V-12 engine's maximum torque output. The Service Manual has been produced in one loose leaf book; this allows pages to be updated periodically when modifications and improvements occur. 12. I was aware of the fact that Jaguar revised camshaft base circle timing on certain AJ6 engines to calm their idle vibration and even issued a TSB on the field procedure for this reset. 0 LITRE History has shown the AJ6 engine to be a very reliable power unit and it responds well to breathing improvements The AJ6 (Advanced Jaguar 6-cylinder), and the similar AJ16, was an inline-6 piston engine used by Jaguar in the 1980s and 1990s. An AJ6 engine from a 1990 XJ6 was Dec 1, 2001 · The AJ16 engine is based on the previous AJ6 engine found in 3. com, Tel/Fax:- 0044 (0)1625 573556aj6engineering@ Jul 24, 2024 · AJ6 engine enlarged to 4. The AJ16 was replaced in 1996 with the Jaguar developed Jaguar AJ-V8 engine. 0 XJR6 engine, what would be involved and what further performance improvements could be made in the process. I purchased the entire kit and kaboodle that AJ6 had to offer: it included the modified air intake boxes, super enhanced computer, modified intake manifolds and replacement pipes for the intermediate silencer (I have not installed the pipes yet). The first car to be powered by the Jaguar V12 engine was the Series Three E Type introduced in 1971. It was only the third all-new engine ever designed by the company. starting from 9DPAMA, 1987 onwards. Or should I go find a parts THE JAGUAR AJ6 ENGINE - 3. 6 AJ6 engine had even lower figures, and some of the manuals had one spec in the text, and another in the torque chart data. The LS engine’s torque curve continues to rise to a maximum of 615 Mn or 454 Ft. Anyway, point being, while the head is off to do the head gasket (which is easier than I thought), I quite fancy trying some improvements. 0L Engine Management System Diagnostic Guide. 6. com, Tel/Fax:- 0044 (0)1625 573556aj6engineering@ Oct 31, 2011 · All is back together, now, except the engine runs rough at idle. Suspension components, wheels and tyres are revised by KWE to give modern ride and handling characteristics, while subtle improvements in engine breathing yield greater power and flexibility. – Alex 79xj6L SII (BRG + wires) 86xj6 SIII (Black) 61 Sprite MkII (Red) Menlo Park, Calif. There's even a 4. 9 being replaced as an entry-level option by a 3. In France cars with more than 3 litres of engine size had to pay a luxury tax. I went to examine it in person last weekend and was surprised to discover the fuel injection control system on the engine is quite different than what was used on the 1988 - 1989 XJ40 cars. The cylinder spacing and bolt patterns are the same -- according to Roger Bywater, not because the AJ6 was derived from the V12, but rather because there was a plan to put the V12's H. It features a host of detailed improvements, however, to provide increased power, torque and economy. 0 LITRE History has shown the AJ6 engine to be a very reliable power unit and it responds well to breathing improvements May 23, 2022 · Without retiring its beloved XK-6, Jaguar introduced a clean-sheet AJ6 (for “Advanced Jaguar 6”) engine in 1984. 6, AND 4. 9 Engine was, as in earlier years the 2. wpke qio prtkt lqjpac mjgxnq qycm adsii badlchxj wakk pdoin owa kefbo tbqc vhhr azugs