JK 4.0 HO Swap for real.

[JKUndaunted]

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[JKUndaunted]

Hey guys. I'm new here and this is my first post so please bare with me. I killed my 545rfe in a lake at my local quarry. Took on 3 litres of sandstone lake water through the stupid vented dipstick tube. Managed to drive 23 miles home and once I turned off the jeep and started it again it wouldn't move. Transmission destroyed. I hated the crd motor anyway so sold it in perfect working order. So now comes the good stuff. Im swapping in the legendary 4.0 fully rebuilt with an AW4/241 combo. Do I have your attention?

Regards
Ollie

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[JKUndaunted]

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[JKUndaunted]

Thats the stinking CRD about to be hauled.

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[jeeeep]

Hello and welcome to the forum.

you're swapping out a CRD?? i'd love to have a CRD in my rig. I hear in 2016 (2015 model) they will finally offer one in the USA

But I guess your CRD is Mercedes? and that's as common over there as the 4.0 is here. Will be interesting to see how It works out.

 

[JKUndaunted]

CRD and transmission removed.

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[JKUndaunted]

Well the CRD stinks. Only got 22 imperial mpg with 35's on 4.10 gears. My 91 2 door xj 4.0 HO/AW4 with 244,000 miles on it rollin on 33's with 3.55 gears gets 27 imperial mpg. Plus diesel is 10 pence (16 cents) per litre more in England.

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[JKUndaunted]

AW4 mounted and bare block test fit. Loads of space.
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[JKUndaunted]

Motor mounts removed and frame cleaned ready for new mounts.

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[JKUndaunted]

New motor mounts.

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[JKUndaunted]

Motor mounts welded in and painted. Rebuilt engine mounted up.

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[JKUndaunted]

Please excuse the scruffy PAS lines. They will be replaced and only on there to keep dirt out of the pump.

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[JKUndaunted]

OK im tired now. More tomorrow.

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[904Jeep]

Looks great! how do you plan on integrating the PCM with the dash?

 

[mtnbiker995]

This is badass man!

 

[FrankenJeeper]

Definitely excited to see the end product! :thumbup:

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[Linebacker]

"Laissez Les Bon Temps Roulez"!
"Let the good times roll baby", or something like that! Great project!:thumb::thumb:
I think the 4.0L HO may be the best engine Jeep has ever put in any of their products. Period!!My two Pence!

 

[txjeeplover]

I had the 4.0 in two of my past Jeeps and I loved that motor. Hell, I still love to hear the sound of the 4.0 cranking before start-up! Personally if I were going to swap something into my JK, I would look forward and go with a modern HEMI or LS engine. However I applaud you, your creativity, and ingenuity; I am watching this build with bated breath.
:clap2:

 

[Zstairlessone]

Subscribed! Even if this is backwards to what I would like to do (put a diesel INTO a JK ) I'm looking forward to the 4.0 install. Looks good so far!

 

[JKUndaunted]

Well I have had a few common rail diesel engines and they do not come close the the 4.0 for reliability and durability. When you factor in the cost of parts for a modern diesel and the marginal fuel savings they really are not worth it. Now the cummins 5.9 or any other large capacity diesel is fine but the CRD/545rfe was a gutless combo. Wouldn't hold a gear and just felt mismatched. Anyway what kinda jeep has a weeny Italian diesel under the hood? Its American! It needs an american motor.

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