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
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