Honda J engine


The J-series is Honda's fourth production V6 engine family introduced in 1996, after the C-series, which consisted of three dissimilar versions. The J-series engine was designed in the United States by Honda engineers. It is built at Honda's Anna, Ohio and Lincoln, Alabama engine plants.
It is a 60° V6 – Honda's existing C-series were 90° engines. The J-series was designed for transverse mounting. It has a shorter bore spacing, shorter connecting rods and a special smaller crankshaft than the C-series to reduce its size. All J-series engines are gasoline-powered SOHC 4-valve designs with VTEC variable valve timing.
One unique feature of some J-family engine models is Honda's Variable Cylinder Management system. The system uses VCM to turn off one bank of cylinders under light loads, turning the V6 into a straight-3. Some versions were able to turn off one bank of cylinders or one cylinder on opposing banks, allowing for three-cylinder use under light loads and four-cylinder use under medium loads.

J25A

The J25A was used only in the Japanese domestic Inspire/Saber models. The J25A displaced. Its bore and stroke was. The J25A used a 10.5:1 compression ratio and was a SOHC VTEC design. Output was at 6200 rpm and of torque at 4600 rpm. It had a variable intake manifold to optimize torque output across varying engine speeds and engine response.

J25A

The J30A displaces and is a SOHC VTEC design. Its bore and stroke is. Output for the lightweight J30A1 was at 5500 rpm and of torque at 4800 rpm. The J30A4 pushed output to and using a three-way VTEC system, a higher compression ratio and a novel exhaust manifold cast as one piece with the cylinder head. It weighs nearly less and is an inch shorter than J30A1. 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 Honda created the J30A5 to mark the 30th anniversary of the Accord. It boosted output to and of torque. According to Honda, horsepower gains were achieved with improvements to the airflow of the intake and exhaust system.

J30A1

The J32A displaces and is a SOHC VTEC design. Its bore and stroke is. Output was at 5600 rpm and at 4700 rpm for the J32A1, with the J32A2 raising output to at 6200 rpm and at 3500-5500 rpm. A more aggressive camshaft, more free flowing intake/exhaust, and a 2-stage intake manifold produced a increase over the J32A1. The J32A3's output in the 2004/2005 TL is. SAE changed the way they tested engine hp for the 2006-2008 TL is. The J32A3 includes a one-piece exhaust manifold cast with the cylinder head, first introduced on the J30A4.

J32A1

J35A

The J35A is a SOHC VTEC design. Its weight is running.

J35A1

Piston Oil Jets

J35S1

The J35Z engines use a die-cast aluminum block with cast-iron cylinder sleeves.

J35Z1 - VCM

J35Y1 - VCM

A bespoke 75 degree twin turbo variant paired with a sport hybrid system.
The J37 uses a die-cast aluminum block with aluminum cylinder liners. Primarily due to the cylinder liners being made from aluminum instead of cast-iron the engine weighs less than the J35Z engines. The intake manifold is made from a cast magnesium alloy.

J37A1