Honda J engine
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| Honda J engine | |
| Manufacturer: | Honda Motor Manufacturing |
|---|---|
| Production: | 1996– |
| Predecessor: | Honda C engine |
| Class: | SOHC 60° V6 |
| Engine: | 2.5 L 3.0 L (2997 cc) 3.2 L (3210 cc) 3.5 L (3471 cc) 3.7 L (3664 cc) |
| Similar: | Chrysler SOHC V6 Ford Cyclone GM HFV6 Nissan VQ Toyota GR |
The J-series was Honda's second V6 engine family, introduced in 1996. It is a 60° V6 – Honda's existing C-series is a 90° engine. The J-series was designed for transverse mounting. It has a shorter bore spacing (98 mm), shorter connecting rods, and a special smaller crankshaft than the C-series for compactness. All current J-series engines are SOHC 4-valve designs with VTEC variable valve timing.
The J-series engine was designed in the United States by Honda engineers. It is built at Honda's Anna, Ohio engine plant.
One unique feature of some J-family engine models is Honda's Variable Cylinder Management (VCM) system. The system uses the i-VTEC system to turn off one bank of cylinders under light loads, turning the V6 into a straight-3.
Contents |
[edit] J25
The J25A was the first J-series engine produced. It was only used in the export-model Inspire/Saber models, however. The J25A displaced 2.5 L and was an SOHC VTEC design. Output was 192 hp.
- J25A
- 1999 Honda Inspire
- 1999 Honda Saber
[edit] J30
The J30 displaces 3.0 L and is an SOHC VTEC design. Output for the J30A1 was 200 hp (149 kW) and 195 ft·lbf (264 N·m) of torque. The J30A4 pushed output to 240 hp (179 kW) and 212 ft·lbf (287 N·m) using a three-way VTEC system, higher (10:1) compression ratio, and a novel exhaust manifold cast as one piece with the cylinder head. This version was on the Ward's 10 Best Engines list for 2003 and 2004. The IMA hybrid version was on the list for 2005. In 2006 to mark the 30th anniversary of the Accord, Honda created the J30A5, which boosted output to 244 hp (SAE Net 08/04) and 211 ft·lbf (SAE Net 08/04) of torque. According to Honda, horsepower gains were achieved with extensive improvements to the airflow of the intake and exhaust systems.
The J30A1 used in the 6th-generation Accord (1997-2002) has heads which are very similar to the J32* engines used in Acura CL and TL Type-S engines of approximately the same years. This makes it possible to swap in J32A2 camshafts. These are readily available and not particularly expensive (about $200 for two camshafts plus $40 or so for gaskets and other items, vs. $1000+ for custom-ground camshafts from other sources) and produce excellent performance gains, particularly in the mid to high RPM range. However, the stock J30A1 valve springs are not as stiff as the J32A2 valve springs, so the valves may need adjustment more frequently than on an unmodified J30A1 engine. Also, 1997-1999 Accords used a distributor, which means the rear camshaft has to be notched by a machinist in order to work in those cars. (2000 and above J30A1s use direct ignition and thus can be dropped in unmodified.)
- J30A1
- 1997-1999 Acura 3.0CL
- 1998-2002 Honda Accord V6
- J30A4
- 2003-2005 Honda Accord V6
- J30A5
- 2006 Honda Accord V6
- Variable Cylinder Management
- 2005 Honda Accord Hybrid
[edit] J32
The J32 displaces 3.2 L and is a SOHC VTEC design. Bore is 89 mm and stroke is 86 mm. Output was 225 hp for the J32A1, with the J32A2 raising output to 260 hp. The J32A3's output in the 2004/2005 TL is 270 hp. SAE corrected hp for the 2006 TL is 258 hp.
- J32A1
- 1999-2003 Acura TL
- J32A2
- J32A3
- 2004+ Acura 3.2TL
[edit] J35
The J35 displaced 3.5 L (3471 cc) and is an SOHC VTEC design. Bore is 89 mm and stroke is 93.2 mm. Output was 210 hp for the J35A1 and 265 hp (198 kW) and 253 ft·lbf (343 N·m) for the J35A3.
The new J35 used in the Acura RL produces 290 hp (224 kW) at 6200 rpm and 256 ft·lbf (347 N·m) at 5000 rpm. This engine was on the Ward's 10 Best Engines list for 2005.
The J35A91 used in the Honda Ridgeline produces 247 hp (184 kW) at 5750 rpm and 245 ft·lbf (332 N·m) at 4500 rpm.
The J35 is also used by General Motors in the Saturn VUE, though GM refers to it as the L66.
- J35A1
- 1998 Honda Odyssey
- J35A3
- J35A9
- J35Z1 - Variable Cylinder Management
- 2005 Honda Odyssey
- 2006 Honda Pilot
[edit] J37
The latest variant J37 displaces (3664 cc) with bore and stroke of 3.4 x 3.8 inches (90 x 96 mm). Rated output is 300 hp at 6000 rpm and 275 ft·lbf at 5000 rpm. The J37 is used in the 2007+ Acura MDX.
[edit] See also
[edit] References
- Car and Driver magazine, November 1996, p111
