 | Home > Maintenance & Modifications > Building a Jaguar V8 powered 90 |
 
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6298   
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is this the v8 they put in the v8 works?
if so I've been informed by someone in the know that getting it to work correctly will be nigh on impossible? |
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15th Jan 2022 5:26pm |
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| GREENI Member Since: 22 Aug 2010 Location: staffs Posts: 10379 
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It has been done.
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15th Jan 2022 6:17pm |
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| kenzle8a Member Since: 12 Feb 2020 Location: None Posts: 1074 
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It can't be any harder than fitting an LS can it? LOF did one (Edit they did a ford Coyote), I'm right in thinking a lot of the mounts / parts came from blackbird industries for the works one.
Since the 4.2 is the same ish engine and uses the same autobox as the M57's I don't see it being too much of an issue. Last edited by kenzle8a on 21st Jan 2022 8:45am. Edited 1 time in total |
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15th Jan 2022 7:45pm |
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| takoon Member Since: 16 Oct 2013 Location: central Posts: 48 
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I’ll guess it is the 4,2 you are installing as it has a dipstick ( the 5,0 lack this)Will it be the supercharged or the NA? Would like to do the same conv. on my 90`. Good luck
 -99 Td5 90 CSW
-09 Jaguar xk4,2 Portfolio |
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21st Jan 2022 6:38am |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6298
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knowing someone at jlr they implied that doing what jlr had to do for the anniversary edition was not possible / viable for a 3rd party to do? I think this has more to do with the electrickery more than the mechanics.
hence why the coyote is a favourable alternative. |
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21st Jan 2022 6:17pm |
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| kenzle8a Member Since: 12 Feb 2020 Location: None Posts: 1074
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Tbh if you can stuff a twin turbo x5 engine in a Defender I would think that the jag one can be used to with some poking about
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21st Jan 2022 9:15pm |
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 328 
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How is this build going?
Be interesting to see if you've gotten any further. If you're stuck on the hurdle of which box to use there is a manual box that will fit the AJ-V8, its used in the s-type Jags. S6-53. I believe there to be an adaptor to the LT230 already for that Gearbox although, designed for the AWD version that came from manual Disco 3/4s. Just a thought. as well as Gear selector adaptors too. 4.0 V8 Defender 90 My Instagram |
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6th Jul 2023 10:38am |
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| Chicken Drumstick Member Since: 17 Aug 2020 Location: Near MK Posts: 708
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Sorry, but that is utter BS. Engines aren't magical boxes running on pixie dust. All you need to be able to do is control the air/fuel/spark. Not saying it will be easy, but the Jag V8 doesn't do anything fundamentally different to any other engine. So there is no logical or rational reason why it can't be made to run. Last edited by Chicken Drumstick on 6th Jul 2023 12:16pm. Edited 2 times in total |
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6th Jul 2023 11:58am |
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| Chicken Drumstick Member Since: 17 Aug 2020 Location: Near MK Posts: 708
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Any updates on this? For reference, Jaguar did build a manual, but only in the form of the XK180 concept car. However I believe there is a firm that has done manual conversion in something like an Elise platform running the Jag V8 engine. And of course JE Engineering offer the Jag V8 engine in a 90 over a decade ago with a manual box. e.g. something like this: https://moto-drome.com/about-motodrome/cur...ged-99995/ The ZF-6 speed as used in the Disco 3 or various BMW products should mate directly to the engine without an adapter. But you need to solve the flywheel. JE wouldn't tell me what they used, but did say it would need "fabbing". There are conversion kits to mate the ZF-6 speed to the LT230. So it should then just be a matter of getting the engine running. Here is a Jag powered trials vehicle. Not sure if it is a 4.4 or 4.2, but it is running the ZF 6-speed manual and RRC style Borg Warner chain driven transfer box. |
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6th Jul 2023 12:16pm |
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 328
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I find it odd the fact that these 4.2s are not more mainstream. I don't know much about their reliability but the units are everywhere and not that expensive. the biggest problem is simply management. however, I would have thought that with enough interest a plug & play solution would've been developed.
Would love to have had one of these instead of a 1UZFE simply for the added 100bhp and the bragging rights a supercharger gives  4.0 V8 Defender 90
My Instagram |
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6th Jul 2023 12:26pm |
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| Chicken Drumstick Member Since: 17 Aug 2020 Location: Near MK Posts: 708
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I agree. I'm amazed nobody has developed a simple plug & play ECU solution. The Jag engine is the ideal conversion engine IMO. Rover V8's are getting harder to find and as nice as they are, they are 150-250hp engines unless you spend BIG money on them. The AJV8 can be had for as low as £300 from a breakers and comes in a variety of displacements and outputs. Any other transplant engine is far less viable in the UK. I love the LS engines (have one in my Camaro). But in the UK you just don't find them in breakers yards. Nor is the Chrysler Hemi or Ford mod motor (aka Coyote). And nothing BMW or Merc is really all that suitable or desirable. Plus using the AJV8 keeps it 'in-house' if you know what I mean. I've contacted a number of places over the years. But oddly there seems to be no appetite. Not sure why... maybe they are only interested in wanting to flog LS conversion for £80-150k, despite only costing about £10-12k to build. |
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6th Jul 2023 2:38pm |
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| steveww Member Since: 05 Jan 2022 Location: Uppingham Posts: 566 
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Modern ECU do more than just control the spark and fuel. That's what makes them tricky to swap over as part of an engine swap. However, there are numerous stand alone ECUs from various manufactures available. I've used Motec in the past. Getting the ECU connected up is easy, the tricky part is developing the map. This takes many hours on a rolling road which soon gets expensive.
If I had the time and the money, I'd like to try the JLR 4.4 diesel V8 in a Defender. |
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6th Jul 2023 3:15pm |
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| Chicken Drumstick Member Since: 17 Aug 2020 Location: Near MK Posts: 708
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TDV8 is another story.
But on the ECU side. It depends, if you are transplanting a modern electronic controlled transmission too, then maybe yes. Otherwise in theory all you need to do is bypass any sort of immobiliser type thing and BECM controls and just stick with the engine. As you aren't wanting to control things like EAS, emissions stuff or anything else from the source vehicle. You just need to pair it down. As above, I posted a video of an 80" CCV motor running the Jag V8. So it clearly is 100% possible with the right knowhow. I can't see that making the Jag engine run in another vehicle should be any more challenging than getting any other modern engine to run in another vehicle. And engine swaps are hugely popular and common in the motoring world. |
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6th Jul 2023 3:26pm |
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| JOW240725 Member Since: 04 May 2015 Location: Suffolk Posts: 7904 
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IIRC Bowler fit the Jag V8 into the Bulldog and Wildcats etc, so is certainly possible. I know they're part of JLR now but surprised they don't offer a solution. James
MY2012 110 2.2TDCi XS SW Orkney Grey - http://www.defender2.net/forum/topic43410.html MY1990 110 200TDi SW beautifully faded Portofino Red - https://www.defender2.net/forum/post743641.html#743641 MY1984 90 V8 Slate Grey - https://www.defender2.net/forum/post744557.html#744557 Instagram @suffolk_rovers |
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6th Jul 2023 9:14pm |
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