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Hello, is the 4.0 v6 really that bad when it comes to engine failures?

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Old Jan 20, 2026 | 02:00 PM
  #11  
MonLand's Avatar
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Joined: Jan 2009
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Default What Ford v6 engine is an easy swap for LR v6?

Originally Posted by enb54
I replaced my engine with a Ford Ranger 4x4 4.0L SOHC V6 because of this very problem. Somewhere Ford wants you to replace the timing chain tensioners, which I did do on my replacement used engine with about 130,000? Km on it, plus used a Moroso pre-pressure oiling system to ensure the tensioners were operated before engine start. I have had absolutely no problems with this setup, but others would disagree, take a look at the Ford Explorer 4.0L SOHC forum and there is lots of information about these engines. I must warn you that on that forum they are mostly pro pre-pressurization of the oil system and I eventually became a convert also. I always use synthetic oil and change oil and filter about every 7500 Km. Just my $0.25 worth...
You replaced your v6 4.0 LR3/D3 engine by a Ford Ranger 4x4 4.0? If yes, what engine is a direct swap (i.e. no work) vs. have to do something (switch heads, switch timing cover or etc.).

My timing chain guides went, and I can't find a (used/junkyard) engine for a decent price (I'd be able to buy a running v8 for the price of those used junkyard engines! And.... I'd still need to do the chains/chain guides/tensioner work....). I was not driving when that happened and figured I'd get a running engine, do the chains and swap it (vs. have to find out something is bent and have to do the heads/replaced bent parts/etc.)
 
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Old Jan 20, 2026 | 02:21 PM
  #12  
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https://landroverforums.com/forum/lr...ild-kit-93456/
 
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Old Jan 25, 2026 | 09:26 PM
  #13  
cybercop's Avatar
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Joined: Dec 2008
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From: North Georgia
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Originally Posted by houm_wa
If it's like the (timing chain) issues that the 5.0 has, then it's a common problem.
Funny you say this, I've got a LR4 5.0L V8 with over 195K miles on it and have never had any major engine issues at all. But I change oil every 5K miles
 
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