Roger Lister's Mitsubishi 3.0 Liter V-6 Engine Specifications

Roger Lister wrote:

I'm pulling info from many sources. Dr. David Zatz and his ALLPAR site, my friend Rob Carter's 3.0 FAQ and his General FAQ, Gary Donovan's site, Paul Berkebile's site, James Dempsey and his Chrysler 3 liter mailing list, Rob Carter and I collaborated on the NEW Mopar minivan Homeworld, and my own personal research [Webmaster note: dead links have been removed]. And many other sources and people and such. Too numerous to mention. Including several Chrysler service techs who shall remain nameless for their own protection...

Specifications

As used in Mitsubishi vehicles

Mitsubishi vehicles (from the Mitsubishi 6G72 FSM, Montero FSM)

SOHC Specs: FWD

Compression ratio                10.0
valve timing
intake open                       16 BTDC
close                                 66 ABDC

exhaust open 56 BBDC
close 26 ATDC

injector N210H

RWD

Compression ratio             8.9
valve timing
intake open                       19 BTDC
close                                 59 ABDC

exhaust open 59 BBDC
close 19 ATDC

injector B210H

SOHC Piston Clearance
Piston to cylinder                .02-.04mm (.0008-.0016")
Service Size (Overbore)     .25,.5,.75,1.00mm
                                          .010,.020,.030,.039"

DOHC Specs: Non-Turbo

Compression ratio                10.0
valve timing
intake open                          16 BTDC
close                                    55 ATDC

exhaust open 48 BBDC
close 15 ATDC

injector BDH210

Turbo
Compression ratio                 8.0
valve timing
intake open                           16 BTDC
close                                     55 ATDC

exhaust open 50 BBDC
close 17 ATDC

injector BDL360

DOHC Piston Clearance
Piston to cylinder                   .02-.04mm (.0008-.0016")
Service Size (Overbore)        .25,.5,.75,1.00mm
                                             .010,.020,.030,.039"

All Mitsu versions appear to use a 60mm throttle body.

Chrysler version (According to my '87 FSM and Rob Carter's 88 and 89 FSM)

Compression ratio                  8.85:1
valve timing
intake open                            19 BTDC
close                                      57 ABDC

exhaust open 57 BBDC
close 19 ATDC

injector No Info

Piston to cylinder                    .02-.04mm (.0008-.0016")
Service Size (Overbore)         .25,.5,.75,1.00mm
                                              .010,.020,.030,.039"

Chrysler version (According to my '92 FSM):

Apparently the differences is due to a switch from MultiPoint Fuel Injection with SMEC (Single Module Electronics) to Sequential MultiPort Fuel Injection and the SBEC (Single Board Electronics)

Compression ratio                    8.85:1
valve timing
intake open                              19 BTDC
close                                        59 ABDC

exhaust open 59 BBDC
close 19 ATDC

injector No Info
Torque 170 Lb. Ft. @ 2800 RPM

Piston to cylinder .03-.05mm (.0012-.002")

General Engine Specs (As per Chiltons Chrysler Minivan manual chart)

1987 3.0 142 HP @ 5000 RPM 173 lb/ft @ 2800 RPM 8.9:1 Compression

1988 3.0 142 HP @ 5000 RPM 173 lb/ft @ 2800 RPM 8.9:1 Compression

1989 3.0 142 HP @ 5000 RPM 173 lb/ft @ 2800 RPM 8.9:1 Compression

1990 3.0 142 HP @ 5000 RPM 173 lb/ft @ 2800 RPM 8.9:1 Compression

1991 3.0 142 HP @ 5000 RPM 173 lb/ft @ 2800 RPM 8.9:1 Compression

1992 3.0 143 HP @ 5000 RPM 168 lb/ft @ 2500 RPM 8.9:1 Compression

1993 3.0 143 HP @ 5000 RPM 168 lb/ft @ 2500 RPM 8.9:1 Compression

1994 3.0 143 HP @ 5000 RPM 168 lb/ft @ 2500 RPM 8.9:1 Compression

1995 3.0 143 HP @ 5000 RPM 168 lb/ft @ 2500 RPM 8.9:1 Compression

Other relevant pages - more information

Other relevant Allpar pages: 3 liter introduction and details | 3 liter repair | 3 liter turbo | 3 liter performance upgrades | other engines