tapps33
Member Since: 17 Jun 2021
Location: Maine
Posts: 7
  
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| LR 5.0 vs Jag 5.0 Engine? |
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Hello all! I'm new to the forum, but not really all the new to the LR4. I'm currently working on an engine swap project for my LR4, and have a question I'm hoping someone can answer for me.
Does anyone know the difference between the Land Rover 5.0 engine and the Jag 5.0 engine? More specifically, can I use one as a long block for the other?
Long story even longer, I need to rebuild the engine in my LR4. Rather than have the car down for several months while waiting on machine work, I figured I'd just buy a used engine as a "long block." Since I'm replacing the pistons, rods, injectors.....and pretty much everything else, a cheap used engine will be fine for my build.
Here's the kicker, the Jag engines appear to be about $1-$2K cheaper......but as I understand it, they're mechanically identical to the LR 5.0 engines. The software is a little different, that I know, but has anyone ever done a LR to Jag or Jag to LR swap before?
Just want to make sure this doesn't fall into the category of, "They're almost the same.....but just enough different to make this almost impossible."
Thanks! 2010 LR4
Soon to be 2010 LR4 5.0 Supercharged
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 17th Jun 2021 11:10 pm |
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galwaygreen
Member Since: 30 Oct 2011
Location: plymouth
Posts: 6525
  
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i admire your courage taking this on....BUT,,,a 5 litre engine in a d4 ,,,,guess its petrol....jesus
good luck and keep us posted please
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| 17th Jun 2021 11:22 pm |
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tapps33
Member Since: 17 Jun 2021
Location: Maine
Posts: 7
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Yes, it's the petrol variant, they don't bless us with the Diesel version over here. 
Such is life! I can think of worse things that 510HP in an LR4  2010 LR4
Soon to be 2010 LR4 5.0 Supercharged
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| 17th Jun 2021 11:55 pm |
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galwaygreen
Member Since: 30 Oct 2011
Location: plymouth
Posts: 6525
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you can go to the moon in that....sound track...yippee best of luck...as for diesil found that in toronto
only buses and trucks diesil there.
Last edited by galwaygreen on 18th Jun 2021 12:01 am. Edited 1 time in total
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| 17th Jun 2021 11:59 pm |
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tapps33
Member Since: 17 Jun 2021
Location: Maine
Posts: 7
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thanks! I'm gonna need it! I'll let you know how it goes. 2010 LR4
Soon to be 2010 LR4 5.0 Supercharged
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| 18th Jun 2021 12:01 am |
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MintyHit
Member Since: 25 Jul 2017
Location: Bradford on Avon
Posts: 234
 
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I think you'll have more luck on the US forums... I think there are only a handful of imported LR4 V8's in the UK and I doubt anyone here will have much detailed engine specific knowledge.
What happened to your engine? A rebuild might be the safer option as you might find subtitle differences in compatibility between cylinder head and blocks of differing years etc.
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| 18th Jun 2021 10:26 am |
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tapps33
Member Since: 17 Jun 2021
Location: Maine
Posts: 7
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Thanks for the advice, I didn't know the V8 LR4 was mainly a US thing. It's a shame, the V8 was a great platform! Although I'd love to get my hand on a diesel version too.....
As for the engine, I've got a head gasket that's leaking and it's time to do the timing chains. Rather than rebuild in place, I'm going to remove the engine and rebuild it then. However, I'm also planning on upgrading to the supercharged engine from the RRS....so it's kind of a hybrid rebuild. That said, it's also my daily driver, so limiting the downtime is critical, and machine shops around here tell you 2 weeks, then you get your parts back 6 months later! I also don't want to pay $8K for a used engine that I'll have to. spend another $2K rebuilding. So it's basically a time and money issue.....but isn't it always? 2010 LR4
Soon to be 2010 LR4 5.0 Supercharged
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| 18th Jun 2021 10:41 am |
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MintyHit
Member Since: 25 Jul 2017
Location: Bradford on Avon
Posts: 234
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Yeah we just got the reliable old 4.4 V8 LR3's here... still a Jag AJ-V8 engine but only 300bhp odd.
I am surprised the 5.0 isn't enough power for you? Arn't you going to have a nightmare changing the ECU's if you swap to the supercharged version?
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| 18th Jun 2021 12:48 pm |
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tapps33
Member Since: 17 Jun 2021
Location: Maine
Posts: 7
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Yeah, we had an LR3 and loved it so much we took the plunge on an LR4 when they were first released over here.
As for the swap, I don't think it'll be too bad. I've already sourced all the modules, and all that's left is to either rebuild my NA 5.0 into the SC version, or buy a donor and rebuild that....then install it of course.
As for power, yes, 375HP is probably all I need.....but is it really ever enough? 510HP would just be so much nicer! 2010 LR4
Soon to be 2010 LR4 5.0 Supercharged
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| 18th Jun 2021 1:51 pm |
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galwaygreen
Member Since: 30 Oct 2011
Location: plymouth
Posts: 6525
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510 HP...nicer....you bet.....how many to the gallon ????
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| 18th Jun 2021 10:57 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10754
 
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It’s usually the sumps that are different. But can’t answer your Q
Reminds me of that Sam crack YouTube video.
How many times did he rebuild that RR 5.0 SC trying to get it running.
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| 19th Jun 2021 7:33 am |
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nigethecat
Member Since: 11 Sep 2016
Location: Marnoch
Posts: 4252
 
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galwaygreen wrote:510 HP...nicer....you bet.....how many to the gallon ????
Shouldn't that be gallons to the mile ?  I want to see the sweets before I get into your windowless van... I'm not stupid!
Corris Grey D4 Commercial SE 2016
Zermatt Sliver 2007 D3 SE manual (gone)
Indus Silver D4 HSE 2015 (gone)
Bonatti Grey D3 HSE 2006 (gone)
White D3 S (LHD) 2007 (gone)
Firenze Red D4 HSE 2014 (gone)
Black RRS 3.6TDV8 2008 (gone)
Rusty Green Defender 110 1997 (gone)
Black FL2 HSE 2013 (gone)
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| 19th Jun 2021 8:58 am |
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tapps33
Member Since: 17 Jun 2021
Location: Maine
Posts: 7
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Yeah, I've been hearing that the oil sumps and pans are slightly different, and that the accessories on the LR are "water resistant."
I'm guessing those are the mods required to let the engine basically driver underwater and at crazy angles.
As for the "economy".......well, I find it better to ignore it and pretend it's better than it is.
Seriously though, I imagine it'll get somewhere in the neighborhood of 13-14mpg in town 18-20 on the highway, which is similar to what we've seen in the NA LR4.......unless of course I'm having fun driving it! than I think the whole gallons to the mile analogy is WAY more accurate! 2010 LR4
Soon to be 2010 LR4 5.0 Supercharged
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| 19th Jun 2021 5:01 pm |
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