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fatladandy



Member Since: 22 Jan 2017
Location: Winsford
Posts: 10

United Kingdom 
4.4 or 4.2sc

I am currently looking to get myself an L322. I am undecided on which engine to go for. I have a budget in mind that would see me in either a 4.4i or 4.2 sc. I have previously had the 4.4 engine on gas in an x5 and that ran brilliantly however i have no experience or knowledge of the 4.2 sc when running gas.

Which engine would be the best option to go for.

Thanks

Post #583212 11th Feb 2021 9:40am
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Bl4ckD0g



Member Since: 16 Feb 2020
Location: 127.0.0.1
Posts: 923

Netherlands 2010 Range Rover Autobiography 5.0 SC V8 Santorini Black

Ahem one has a supercharger and better base specification and the other doesn’t. Why is this a question even?

Post #583218 11th Feb 2021 10:07am
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fatladandy



Member Since: 22 Jan 2017
Location: Winsford
Posts: 10

United Kingdom 

My question was relating to which engine is better for LPG, I know the 4.4i is fine but i have no experience of the 4.2 sc engine either with or without lpg

Post #583221 11th Feb 2021 10:25am
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dingg1



Member Since: 29 Jun 2013
Location: PORTUGAL
Posts: 889

2007 Range Rover Vogue SE 4.2 SC V8 Stornoway Grey

I have a 4.2 on gas for 7 years now, I have slight petrol addition after 2900 rpm and valve saver, just a simple drip feed after throttle butterfly, done about 50k on gas no issues whatsoever.

The bmw engine has harder seats and is better for lpg though.

Post #583222 11th Feb 2021 10:39am
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Zebedee



Member Since: 09 Jun 2016
Location: Cheshire/South Manchester
Posts: 288

United Kingdom 2013 Range Rover Vogue SDV8 Santorini Black

The 4.4 is easier to convert to LPG. The 4.2 requires the extra oil feed system for valve protection. Current:
- 2013 L405 4.4 TDV8 Vogue
Sold:
- 2004 L322 4.4 Vogue (BRC LPG)
- 2002 L322 4.4 HSE (having fixed timing chain guides)
- 2000 P38 4.6 Vogue (BRC LPG)
- 1981 2-door In-Vogue
- 1980 Ex-Army SIII LWB
- 1976 SIII LWB
- 1968 SIIA
Stripped for parts:
- 2003 L322 4.4 Vogue

Post #583223 11th Feb 2021 10:41am
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Bl4ckD0g



Member Since: 16 Feb 2020
Location: 127.0.0.1
Posts: 923

Netherlands 2010 Range Rover Autobiography 5.0 SC V8 Santorini Black

Aha LPG not just Gas as in Petrol Wink

Anyway as I said one has a super charger and a lot more horsepower and a better base specification. Why is this a question 🤣

Either will be fine if the installer is good. Personally I wouldn’t bother with it. If fuel economy is an issue then one may as well get the diesel. Those petrol engines aren’t ULEZ compliant anyway, so won’t have that benefit either. Both engine models are quite old now, and cheap to buy. But does it make sense to spend the money to add LPG to them at that age? You can buy a lot of fuel for the cost of an installation.

Post #583229 11th Feb 2021 11:20am
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dingg1



Member Since: 29 Jun 2013
Location: PORTUGAL
Posts: 889

2007 Range Rover Vogue SE 4.2 SC V8 Stornoway Grey

Rolling Eyes

Post #583235 11th Feb 2021 12:02pm
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fatladandy



Member Since: 22 Jan 2017
Location: Winsford
Posts: 10

United Kingdom 

dingg1 wrote:
I have a 4.2 on gas for 7 years now, I have slight petrol addition after 2900 rpm and valve saver, just a simple drip feed after throttle butterfly, done about 50k on gas no issues whatsoever.

The bmw engine has harder seats and is better for lpg though.


I do like the BMW engine and being a more simple installation it might be a diy job for me. I removed and refitted the LPG to my X5 when i had the headgasket and timing chains done.

Post #583237 11th Feb 2021 12:32pm
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fatladandy



Member Since: 22 Jan 2017
Location: Winsford
Posts: 10

United Kingdom 

Bl4ckD0g wrote:
Aha LPG not just Gas as in Petrol Wink

Anyway as I said one has a super charger and a lot more horsepower and a better base specification. Why is this a question 🤣

Either will be fine if the installer is good. Personally I wouldn’t bother with it. If fuel economy is an issue then one may as well get the diesel. Those petrol engines aren’t ULEZ compliant anyway, so won’t have that benefit either. Both engine models are quite old now, and cheap to buy. But does it make sense to spend the money to add LPG to them at that age? You can buy a lot of fuel for the cost of an installation.


I just want v8 goodness back in my life. Not especially concerned about economy. I currently have an M3 and civic type r so i am used to the bills but i can pick up a used LPG system and potentially diy fit so i might aswell save some cash.

Post #583239 11th Feb 2021 12:34pm
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dingg1



Member Since: 29 Jun 2013
Location: PORTUGAL
Posts: 889

2007 Range Rover Vogue SE 4.2 SC V8 Stornoway Grey

You can do the conversion on the ajv8 without removing manifolds but it is a bit tricky, also you do need to fit a petrol return line with a suitable orifice installed to keep the fuelling correct, whether this is needed on the bmw lump I don't know.

Post #583240 11th Feb 2021 12:52pm
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dhallworth



Member Since: 10 Oct 2011
Location: Glasgow
Posts: 1295

United Kingdom 2012 Range Rover Autobiography TDV8 Baltic Blue

Bl4ckD0g wrote:
Aha LPG not just Gas as in Petrol Wink

Anyway as I said one has a super charger and a lot more horsepower and a better base specification. Why is this a question 🤣



Because the 4.4 is an engine which is perfectly suited to running on LPG, the 4.2 engine is a very different engine which suffers from softer valve seats and can lead to a £3-4k bill to have the issue remedied.

What's the problem with someone seeking advice? The early 5.0's are a flawed engine as well and in many ways the 4.2 is far better from a reliability point of view. Rolling Eyes 1997 4.6 HSE - Oxford Blue with Ash Grey Leather
2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2007 Freelander i6 HSE in Izmir Blue with Ebony Leather
2007 Range Rover Supercharged in Java Black with Ivory Leather
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior

Post #583263 11th Feb 2021 3:31pm
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