engine conversion 2.8 rodeo

Submitted: Tuesday, May 06, 2008 at 14:09
ThreadID: 57327 Views:6526 Replies:3 FollowUps:3
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I own a 2.8 turbo diesel rodeo and are looking to convert it to a 3.1 litre isuzu mu engine,just wondering if anyone had done this before
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Reply By: Member - Matt (Perth-WA) - Tuesday, May 06, 2008 at 14:34

Tuesday, May 06, 2008 at 14:34
Yes I have changed a 2.8 MU to a 3.1 MU.

Pretty straight forward but why are you changing?

The 3.1 has oodles of torque but heavy on fuel...the 2.8 revs better and can be made to run quite respectively and still less than 10l/100km.

AnswerID: 302331

Reply By: jim00 - Tuesday, May 06, 2008 at 18:43

Tuesday, May 06, 2008 at 18:43
HI Matt the engine has done 400,000 ,and getting tired.I do a lot of sand dune driving and little more grunt would be handy.Was the fuel economy extremely bad or just up on the 2.8 James
AnswerID: 302381

Reply By: Member - Matt (Perth-WA) - Tuesday, May 06, 2008 at 19:10

Tuesday, May 06, 2008 at 19:10
OK, well the 3.1 is a significantly more thirsty but still pretty respectable. I did love the grunt and a very reliable engine.

Things to consider...clutch MUST use a 3.1 Jackaroo clutch and flywheel.
Exhaust might match a rodeo...but it didnt match the 2.8 MU due to different oil filter location but the Rodeo is same a 3.1MU.
You will have to replace the timing belt...MUs use a timing belt rather than gears.
The glow plug timer will be all wrong...the 2.8s glow for a sec but the 3.1s need about 30 sec in cold weather...Indirect injection.
You will need to blank off or swap the inlet manifolds to get rid of all the EGR equip.
Sump is extended not probs for fit just services are now 8l of oil.
Umm apart from that the rest is a pretty easy swap and since you can have bothe engines side-by-side you can do the little changes that require (fuel pipes, alternator etc)

If you go to Club Isuzu forum, my write up is there as well as alot of Isuzu mods and info...

All the best...

AnswerID: 302385

Follow Up By: madfisher - Tuesday, May 06, 2008 at 20:42

Tuesday, May 06, 2008 at 20:42
Hi Matt,
What price are the injectors for a 3.1(Jack). Have been told that they are pricey, but wonder if they where confused with the latter 3lt.
Cheers Pete
FollowupID: 568441

Follow Up By: Member - Matt (Perth-WA) - Tuesday, May 06, 2008 at 23:28

Tuesday, May 06, 2008 at 23:28
I did my 3.1 injectors before the sale and it was about $550 with me doing all the work. United Diesel in Perth...great mob and very helpful.
I ripped em out and dropped them in so it will cost more for drive in drive out...I think from memory the nozzles are about $80 each....so x4 and then fitting....you get the pic...reasonable I thought.

I believe the bill for 3.0l injectors is in the thousands but they are HEUI and VERY advanced as apposed to traditional indirect nozzles.

FollowupID: 568468

Follow Up By: madfisher - Wednesday, May 07, 2008 at 18:40

Wednesday, May 07, 2008 at 18:40
Thanks Matt Buggar we missed on a spot on Jack a couple of years ago, one owner 90000ks owner was to old to drive. When I rang the local diesel servicing co he told me not to touch it as the injectors where thousands of dollars ea. He obviously got confused with the wrong motor. Should have got a second opinion. Such is life
Cheers Pete
FollowupID: 568608

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