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, FWD	SOHC, RWD	DOHC, NA*	TURBO
Compression ratio	10:1	8.9:1	10:1	8.0:1
Intake valve open	16° BTDC	19° BTDC	16° BTDC	16° BTDC
Intake valve close	66° ATDC	59° ATDC	55° ATDC	55° ATDC
Exhaust valve open	56° BBDC	59° BBDC	48° BBDC	50° BBDC
Exhaust valve close	26° ATDC	19° ATDC	15° ATDC	17° ATDC
Injector	N210H	B210H	BDH210	BDL360

* Naturally aspirated (non-turbo)

	SOHC or DOHC
Piston clearance (piston to cylinder)	.02-.04mm (.0008-.0016")
Service size (overbore)	.25,.5,.75,1.00mm; .010,.020,.030,.039"
Throttle body	60 mm

Chrysler version (According to factory service manuals)

	1987-91	1992-95
Compression ratio	8.85:1	8.85:1
Intake valve open	19° BTDC	19° BTDC
Intake valve close	57° ATDC	59° ATDC
Exhaust valve open	57° BBDC	59° BBDC
Exhaust valve close	19° ATDC	19° ATDC
Injector	?	?
Piston clearance	Same as MMC	.03 - .05 mm (.0012 - .002”)
Service size (overbore)	Same as MMC	Same as MMC
Horsepower	142 @ 5,000	143 @ 5,000
Torque (pound-feet)	173 @ 2,800	168 @ 2,500 (Chilton) 170 @ 2,800 (FSM)

Apparently the differences between the 1987-89 and 1992 specs are due to a switch from MultiPoint Fuel Injection with SMEC (Single Module Electronics) to Sequential MultiPort Fuel Injection and the SBEC (Single Board Electronics).

Other relevant pages - more information