Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: Tim on August 14, 2006, 05:23:58 PM

Title: Cherokee KJ 2.8 CRD Auto output query
Post by: Tim on August 14, 2006, 05:23:58 PM

I'd like to know my Cherokee KJ's (now I know its designation) power and torque outputs, too. Why don't Jeep put these in the Owner's Manual? I've ben told it's 150 or 161 or 163 bhp; it's a VM engine, 2.8 litre CRD Automatic.

Anyone chipped one of these and if so, which chip and how good? I'm worried about the ones which show the same unit for the Chrysler 2.8 CRD unit as I've been told that these are Merc engines, not VM ones.

Cheers,

Tim

Title:
Post by: tim_aka_tim on August 14, 2006, 06:32:53 PM

www.jeep.co.uk (http://www.jeep.co.uk) says the power is 161bhp @ 3800rpm and 295 lb ft @1800-2400 rpm. The 2.8CRD is an inline 4 VM Motori R428DOHC.
Merc engines are the 2.7CRD and 3.0CRD fitted to Grand Cherokees and Commanders, having I5 and V6 cylinders respectively.

Title:
Post by: MK1 on August 14, 2006, 06:36:25 PM

When we looked at a KJ I was under the impression it was a Merc derived motor not the VM. Glad we didn't buy it now!

Title:
Post by: Tim on August 14, 2006, 06:36:35 PM

I think there were engine mods for the facelift model, taking the power up to 161. I reckon mine might be 150 bhp. Mind you, I went to the Motor Show at ExCeL and they had the Cherokee 2.8 CRD as having a V6 engine, so I'm loathe to believe Jeep UK!

Title:
Post by: tim_aka_tim on August 14, 2006, 07:01:21 PM

Hmm, evidence seems to suggest that the 05 MY got a tweek, upto 161bhp, and that earlier 2.8s were 146bhp. Still looking for torque.

I personally wouldn't upgrade the PCM. VMs checkered history would suggest you might do it, and your bank balance an injury. (I'm speaking from the point of view of someone who has a VM engine).

Title:
Post by: Tim on August 14, 2006, 07:04:10 PM

So should I try to give this back and get a Grand Cherry 2.7 instead?

Title:
Post by: tim_aka_tim on August 14, 2006, 07:10:14 PM

Quote from: "Tim"

So should I try to give this back and get a Grand Cherry 2.7 instead?

Only you can decide that. You need to weigh up the pros and cons on the car as a whole, and not just the engine. I can't offer advice as I've never driven a liberty, but I love my WJ (and hate it in equal amounts). There are a few KJ and WJ owners about the club, perhaps they can offer advice?
If you want cheap to run and quick, get a 4.7 V8 WJ with lpg conversion!!!  :twisted:  :twisted:

Title:
Post by: isle of man on August 14, 2006, 07:18:58 PM

to my knowledge the 2.5 manual in the kj is the vm diesel engine, having once owned one it would not be on the to buy again list!!!!!!!



peter henry

Title:
Post by: daggie on August 14, 2006, 09:35:58 PM

vms  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:  :banghead:

Title:
Post by: Anonymous on August 14, 2006, 09:40:11 PM

Say it as you feel it Daggie

Title:
Post by: daggie on August 15, 2006, 06:40:01 AM

Title:
Post by: KELTICKNIGHT on August 30, 2006, 09:31:51 PM

i have a 2002 liberity with 2.5 crd engine ,got the ecu upgraded and overall,happy with it as its cheaper to run than petrol,any jeep in this country is heavy on pocket,was told by any grease monkey not to get a jeep because of price of parts,but still went with it,so far ,happy with it
the guys here are good with advise to probs,mainly MIKE
would i buy another down the road,so far ,would say Yes,my 5 cents

Title:
Post by: MOCAJ on August 30, 2006, 09:47:51 PM

hi, also got a 2002 2.5crd

interested to know what difference the ecu change has made.

Steve

Title:
Post by: KELTICKNIGHT on August 30, 2006, 09:53:21 PM

the 2.5 was 142 bhp,when upgraded the ecu,it was after the upgrade,went to 172 bhp,got rid of flat spot when picking up speed and gave big boost in power which you notice straigh off

Title:
Post by: MOCAJ on August 30, 2006, 09:57:55 PM

sounds interesting, agree the turbo lag is poor on 2.5, what about mpg  :?:

and where from  :?:

Title:
Post by: KELTICKNIGHT on August 30, 2006, 10:01:23 PM

heres a link to the company i used to do ecu on this side if water
http://www.logicautomotive.ie/ (http://www.logicautomotive.ie/)

heres a link to the software they use,you could more info for installers in uk
http://www.upsolute.com/eng/ (http://www.upsolute.com/eng/)

used these in end as was recommended by alot of guys and said where better  than superchips as well
a good few rally people use the ecu sofware as well as i found out from them

Title:
Post by: KELTICKNIGHT on August 30, 2006, 10:03:01 PM

was told ,would i would use less mpg,after 4 months,can tell you ,its same mpg as it was before i upgraded the ecu,