• Advertisement

4jg2 versions

Get help fixing your Isuzu from other club members

4jg2 versions

Postby andy120 » Fri Jun 05, 2020 11:23 am

Is the 4jg2 block & head used on mu/wizard/bighorn the same?
andy120
Isuzu Junior
 
Posts: 138
Joined: Tue Jun 02, 2015 6:38 am
Location: Upside down in a ditch
Age: 40
Country: NZ
City: Gore
Vehicle: 2 manual Wizards + 1 auto

Re: 4jg2 versions

Postby geeves » Fri Jun 05, 2020 2:41 pm

Only differences are intercooler on bighorn only and this has a different output on the turbo so different part number and later models used an electronicly controled injector pump. (95 on bighorns 96 mu and wizard)
Sanding your knuckles before starting work can help. That way you cant skin them
User avatar
geeves
Site Admin
 
Posts: 8962
Joined: Sun May 10, 2009 1:36 pm
Location: Rangiora
Age: 63
Country: NZ
City: Rangiora
Vehicle: 94 bighorn 4jg2
2013 Subaru XV

Re: 4jg2 versions

Postby bavarian » Sat Sep 19, 2020 5:36 am

hi. I bought my 94 bighorn Irmscher from Japan. how to i know if mine is using electronic controlled injector pump. thanks
bavarian
I'm only here for the information
 
Posts: 2
Joined: Sat Sep 19, 2020 5:20 am
Age: 37
Country: United States
City: Santa Ana
Vehicle: 1994 ISUZU bighorn 3.1 turbo diesel Irmscher

Re: 4jg2 versions

Postby geeves » Sat Sep 19, 2020 7:04 am

94 is unlikely to be electronic but have a look at the injector pump. If you have a steel cable that goes back to the accelerator pedal its non electronic. If it has a box on the back its electronic.
Sanding your knuckles before starting work can help. That way you cant skin them
User avatar
geeves
Site Admin
 
Posts: 8962
Joined: Sun May 10, 2009 1:36 pm
Location: Rangiora
Age: 63
Country: NZ
City: Rangiora
Vehicle: 94 bighorn 4jg2
2013 Subaru XV

Re: 4jg2 versions

Postby handymanny01 » Mon Sep 21, 2020 10:52 am

yes,, but there are 2 heads for the 4jg2.. big valve and small valve.. im guessing early and late 4jg2?
handymanny01
Isuzu Junior
 
Posts: 68
Joined: Tue Jul 12, 2016 9:39 pm
Age: 43
Country: NZ
City: Wellington
Vehicle: Isuzu MU 3.1 Direct injection 4JG1 conversion, Vf10 hybrid, ported wastegate, mild port head, custom 12mm pump, 3"dump and system, 3" inlet / pod filter, EGR delete, 2" body lift, 2" (ish) suspension lift, 33" on 15" steelies , recaro seats, nardi wheel,,, rear LSD , front "lokka"

Re: 4jg2 versions

Postby isuzurob » Wed Sep 23, 2020 6:19 pm

big valve is efi model small valve is manual injector pump also theres the gear driven 4jg2t aswell
isuzurob
Global Moderator
 
Posts: 1775
Joined: Mon Jun 07, 2010 6:12 pm
Age: 25
Country: New Zealand
City: Taupo
Vehicle: 1990 Isuzu Bighorn 2.8t/d, 3" extended shackles, 2" body lift, 33" silverstone extreme tyres, Front+rear bars, winch with 40m dyneex rope, 21/2 inch exhaust, lokka's front+rear, custom turbo, emissions removed, injector pump modified and more


Return to Engine

Who is online

Users browsing this forum: No registered users and 13 guests