SOME OF MITSUBISHI CARS

Mitsubishi 6A1 engine

The Mitsubishi 6A1 engine is a series of V6 engines from Mitsubishi Motors, found in their small and medium vehicles through the 1990s. They ranged from 1.6 L to 2.5 L in size, and came with a variety of induction methods and cylinder head designs and configurations.

Although now out of production, the 1600 cc 6A10 still holds the distinction of being the smallest modern production V6.

6A10

* Displacement — 1597 cc
* Bore — 73.0 mm
* Stroke — 63.6 mm

DOHC

* Engine type — V type 6 cylinder DOHC 24 valve
* Compression ratio — 10.0:1
* Fuel system — ECI multi
* Peak power — 103 kW (140 PS) at 7000 rpm
* Peak torque — 147 N·m (108 ft·lbf) at 4500 rpm

Applications

* 1992–94 Mitsubishi Mirage
* 1992–98 Mitsubishi Lancer

6A11

* Displacement — 1829 cc
* Bore — 75.0 mm
* Stroke — 69.0 mm

SOHC

* Engine type — V type 6 cylinder SOHC 24 valve
* Compression ratio — 9.5:1
* Fuel system — ECI multi
* Peak power — 100 kW (135 PS) at 6000 rpm
* Peak torque — 167 N·m (123 ft·lbf) at 4500 rpm

Applications

* 1992–96 Mitsubishi Galant / Eterna / Emeraude
* 1995–98 Mitsubishi Mirage

6A12

* Displacement — 1998 cc
* Bore — 78.4 mm
* Stroke — 69.0 mm

SOHC

* Engine type — V type 6 cylinder SOHC 24 valve
* Compression ratio — 9.5:1, 20.0:1
* Fuel system — ECI multi
* Peak power — 107–110 kW (145–150 PS) at 6000–6750 rpm
* Peak torque — 179–181 N·m (132–134 ft·lbf) at 4000–4500 rpm

Applications

* 1992–96 Mitsubishi Galant / Eterna / Emeraude
* 1992–94 Mitsubishi Diamante

DOHC & sports ECU

* Engine type — V type 6 cylinder DOHC 24 valve
* Compression ratio — 10.0:1
* Fuel system — ECI multi
* Peak power (1994-1996) — 127 kW (172 PS) at 7000 rpm
* Peak power (1997-2002) — 132 kW (180 PS) at 7000 rpm
* Peak torque — 191 N·m (141 ft·lbf) at 4000 rpm

Applications

* 1994–2002 Mitsubishi FTO
* 1992–96 Mitsubishi Galant / Eterna / Emeraude
* 1999-Present Proton Perdana
* 2005-Present Proton Waja Chancellor

MIVEC

* Engine type — V type 6 cylinder DOHC 24 valve MIVEC
* Compression ratio — 10.0:1
* Fuel system — ECI multi
* Peak power — 147 kW (200 PS) at 7500 rpm
* Peak torque — 200.4 N·m (147 ft·lbf) at 6500 rpm

Applications

* 1994–2002 Mitsubishi FTO
* 1993–1995 Mitsubishi Galant
* 1999–2002 Mitsubishi Galant

DOHC twin turbo

* Engine type — V type 6 cylinder DOHC 24 valve
* Compression ratio — 8.5:1
* Fuel system — ECI multi
* Peak power — 177 kW (240 PS) at 6000 rpm
* Peak torque — 309 N·m (228 ft·lbf) at 4000 rpm

Applications

* 1992–96 Mitsubishi Galant VR-44G63
* 1992–96 Mitsubishi Eterna XX-4/GT

6A13

* Displacement — 2498 cc
* Bore — 81.0 mm
* Stroke — 80.8 mm

SOHC

* Engine type — V type 6 cylinder SOHC 24 valve
* Compression ratio — 9.5:1
* Fuel system — ECI multi
* Peak power — 120 kW (163 PS) at 5750 rpm
* Peak torque — 223 N·m (164 ft·lbf) at 4500 rpm

Applications

* 1996–2003 Mitsubishi Galant
* 2002 Mitsubishi Diamante

DOHC twin turbo

* Engine type — V type 6 cylinder DOHC 24 valve
* Compression ratio — 8.5:1
* Fuel system — ECI multi
* Peak power — 206 kW (280 PS) at 5500 rpm
* Peak torque — 363 N·m (268 ft·lbf) at 4000 rpm

Applications

* 1996–2003 Mitsubishi Galant/Legnum VR-4

Ported 4G93T Inlet Manifold

For those of you out there running big cams and a ported cylinder head, moving to a Mitsubishi Lancer GSR CD5A - 4G93T engine inlet manifold will give you slightly more top end. This is due to the shorter runner configuration on the 93T's inlet manifold. Picture below of the 93T inlet manifold. I bought the inlet manifold used from Ralliart Australia way back when this was a relatively unknown mod. To get the like new finish you have to brush the inlet manifold with a steel brush and use lots a engine degreaser/cleaner

Apart from the shorter runners the 93T inlet manifold is also lighter (did not have the opportunity to weight both manifolds but my hand carry weighing scale definitely indicates the 93T to be way lighter) than the 93P and does not have EGR (Exhaust Gas Recirculation). You can find out more about EGR in MrFixit's web page. Now unless you're a greenie (which you probably aren't if you run big overlap cams) EGR is a definite no-no for highly modded and forced induction engines.

I've also decided to port the flange entry and exit points of my 93T inlet manifold to accomodate the larger 60mm throttle body I'm using and also to fit the huge ported inlet ports on my Matspeed 93T RS cylinder head. Picture below of my 93T inlet manifold's ported throttle body inlet flange

Picture of the ported outlet flange

I was initially worried that the extensive porting might cause some low end powerband losses but happily my concerns were unfounded. This is probably due to the efficiency of the Matspeed race ported cylinder head requiring the increased in volume of air. Butt dyno indicates gains everywhere along the rev range. No kidding! Picture below shows the stock 93P inlet manifold vs ported 93T inlet manifold.

Installation was a no brainer and took bout an hour. Do make sure to plumb the vacuum hoses correctly. This is probably as far as you can go with a single plenum inlet manifold though I've seen the Honda B series inlet manifold fitted to our 93P I kid you not. The next step for me would be individual throttles. Stay tuned...

CODE 4G ENGINE

4G61

The 4G61 displaces 1595 cc (82.3 x 75.0 mm bore/stroke). This engine was always DOHC 16-valve and used either Multi-point (MPFI) or Electronic Control (ECFI) fuel injection. A turbocharged version was also produced for the Mirage and Lancer. The 4G61 does not have balance shafts like the other 4G6x motors. Instead, it has different components, some of which can be used on the "Silent Shaft" engine.

Performance:

• 4G61 91kW-124HP/6500 142Nm/5000
  
• 4G61T (USA/Canada only) 99kW-135HP/6000 191Nm/3000
  
• 4G61T (Japan) 160HP-117.68kW/6000 220.65Nm/2500
  

Applications:

• 1988–1992 Mitsubishi Mirage / Mitsubishi Colt (MPFI)
• 1988–1992 Dodge Colt / Plymouth Colt
• 1988–1992 Eagle Summit
• 1992–1995 Hyundai Elantra

4G62

The larger 1.8 L 4G62 was an SOHC 8-valve unit for longitudinal rear-wheel drive and all-wheel drive use. With an 80.6 x 88.0 mm bore / stroke, it displaced 1795 cc.

Applications:

• 1983–1989 Mitsubishi Cordia
• 1988 Mitsubishi Tredia
• 1984-1986 Mitsubishi L300 (Australia - Also known as the Mitsubishi Express)

4G63

The 4G63 was a 1997 cc version. (85mm Bore x 88 mm Stroke) SOHC and DOHC were produced. The DOHC version was introduced in 1987 in the Japanese market Galant VR-4 and came turbocharged or naturally aspirated. It is found in various models including the 1988-92 Galant VR-4 and the U.S. market 1990-1999 Eclipse, as well as the Mitsubishi Lancer Evolution I-IX.

The SOHC version was used in Mitsubishi Galant models until 1993. It has 76 kW of output and 157 NM of torque at 4750 rpm.

Also the SOHC version is produced until the late 90s and early 2000 and it is used in Mitsubishi cars like the Montero and the 2.0L 2-door Pajero with an output of 101kw at 4700 rpm. Also the N33 and N83 Spacewagon(UK market) in single cam 16 valve format.

The Mitsubishi Eclipse, Eagle Talon and Plymouth Laser introduced the DOHC turbocharged intercooled version to the U.S. in 1989 through Diamond Star Motors, a joint venture between Mitsubishi Motors and the Chrysler Corporation. From 1990 to late April 1992 came beefier rods and the use of 6 bolts to secure the flywheel to the crankshaft; May 1992 to 2006 Evolution versions have lighter rods and use 7 bolts to secure the flywheel to the crankshaft. They are referred to as the "six bolt" and "seven bolt" engines, respectively.

Output for the 2003 Japanese/US Mitsubishi Lancer Evolution is 271 hp (202 kW) at 6500 rpm with 273 ft·lbf (370 N·m) of torque at 3500 rpm. It has a cast iron engine block and aluminum DOHC cylinder head. It uses multi-point fuel injection, has 4 valves per cylinder, is turbocharged and intercooled and features forged steel connecting rods.

In the United Kingdom, a special Lancer Evolution, the FQ-400, produces 302.13 kW (405.2 hp), from a 4G63 engine. At 202.6 hp (151.3 kW) per liter, it has the highest specific output per liter of any production engine.