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i have an isuzu trooper skyroof edition, and im planning to relace 4jx1 to 4jb1...does the 4jb1 working good as you mention..please help me on how i do it..i like to put 4jx1 in rest....tenx for the help

which is more
better, the 4jb1 or 4jg2 engine to replace 4jx1....please help me to choose which is better....
my trooper has an automatic transmission, if i buy 4jb1 or 4jg2 engine thus my transmission can be use if they are in manual transmission? tenx buddy

4jg2 with a auto

I would of said 4jb1 but they dont work that well with an auto. The power loss is too much. Switching to a manual transmission can be done but there are so many things that make it hard. Things like the clutch etc
4jg2 is still a good motor as well.
I have both

Can you please send me the Isuzu Trooper 4JB1T Workshop Manual? Many Thanks. Kithsiri Sri Lanka ceo@cbtdsl.org

All the manuals I have can be found here
viewtopic.php?f=12&t=4123

Hey guys. Myself and a mate are currently doing this conversion. The 4JX1 is out and we have found that the clutch needs replacing. These are ridiculously expensive and was wondering if its possible to leave clutch setup from 4JB1 on? does Jackaroo bellhousing bolt straight up to 4JB1? would i then not have to install the Aluminium spacer? Finally does anyone know if rodeo gearbox fits into Jackaroo.

I know this is an old post but any info would be great. Cheers.

is this forum still active? please send me PDF of the conversion.. i converted my 4jx1 to 4jb1 along with the auto to manual transmission.. i have problems with the acceleration.. the car is having a hard time climbing.. what am i missing? thanks in advance

Hi, am very much interested in this swap - my 4jx1 has been giving me hell on earth.
Help a brother out.