Swapping engine out from a KJ 2.4 to a 3.7 (or 4.7 if poss)

Pippobug · **Posted:** Fri Jun 21, 2013 11:00 am

Hi,
This will sound like a very odd question to a lot of you, but bear in mind I am not in the US, so thing over her in the UK are different and we get different spec of KJ over here.
My question is: how difficult is it to swap out in KJ Sport manual a petrol 2.4 to a 3.7 ? of possibly to a 4.7 ? keeping the manual 5 speed gearbox or even 6 speed.
You might ask why? Here is the reason:
1) In the UK only the very early KJ 3.7 came in Sport ie 2002 max 2003, almost all are Limited or Extreme Sport editions all AUTO and I don’t like them, prefer sport model. Our Sport models are only missing the leather seats and the coloured bumpers & wheel arches, we have all the other toys like power windows, mirrors, Aircon & EVC, etc.
2) All the KJ petrol 2.4 are manual over here, same as in the US, and come already with 4.11 axel ratio, so if it’s possible to put in the 3.7 you have already re geared to allow for 32’ tyres.
3) The other way of looking at it, am I better off de badging and swapping out coloured bumpers & wheel arches to a sport and re gearing a 3.7 to 4.11 axel of a 2.4? But I would still love to have a manual gearbox instead of an Auto!?
Sadly I missed out on a very rare KJ Sport 3.7 Auto on Ebay ( had head gasket blown )and I have found another one, but they are asking too much for what I want to do.
Any advise is welcomed.

Tks,

Fil.

ando · **Posted:** Fri Jun 21, 2013 11:26 am

Cant help with your question Fil ... but what you need my freind is to buy my 2.8 Man Sport :lol:

Pippobug · **Posted:** Fri Jun 21, 2013 11:34 am

Hi Ando,

But I already have the better engine out of the the two CRD's, 2.5 all the way, less noisy :-)r

and works better.. :twisted:

.

Asking because I am thinking of possibly getting a second KJ as a WKD one and modifying it so to be able to follow they guys running on 32' or 33' without bottoming out..

Fil.

ando · **Posted:** Fri Jun 21, 2013 1:50 pm

.. yer probably right mate, the brutal torque of the 2.8 would be a bit much for you after a 2.5 :mrgreen:

Interesting sounding project

ATXKJ · **Posted:** Fri Jun 21, 2013 9:40 pm

I don't think anyone's done either swap -

however I suspect you'd need to change the entire driveline - generally they size the transmission and the rear end to the engine

and that would be the easy part

hard would be getting the computers to talk.

mikey1273 · **Posted:** Tue Jul 02, 2013 2:23 pm

A Member here did a 3.7 to 4.7 swap. that was LoboKJ I know it took much work and in the end getting the computers to talk, between the SkIMM key system and the manual trans, and other parts required him to get a custom programmed ECU.

Swapping engine out from a KJ 2.4 to a 3.7 (or 4.7 if poss)

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