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J30A4 Engine Specs4/14/2021
New York Times. Archived from the original on 9 September 2017.Please help improve this article by adding citations to reliable sources.Find sources: Honda J engine news newspapers books scholar JSTOR ( June 2017 ) ( Learn how and when to remove this template message ).
J30A4 Engine Specs Series Engine WasThe J-series engine was designed in the United States by Honda engineers. It is built at Hondas Anna, Ohio, and Lincoln, Alabama, engine plants. It has a shorter bore spacing (98 mm (3.86 in)), 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. Initially, the system turns 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. The J25A displaced 2.5 L; 152.3 cu in (2,495 cc). The J25A used a 10.5:1 compression ratio and was a SOHC VTEC design. Output was 200 hp (149 kW) at 6200 rpm and 24.5 kgm (240 Nm; 177 lbft) of torque at 4600 rpm. It had a variable intake manifold to optimize torque output across varying engine speeds and engine response. Its bore and stroke is 86 mm 86 mm (3.39 in 3.39 in). Output for the lightweight (Actual complete running engine including flywheel, less starter is 152 kg)250 lb (110 kg) J30A1 was 210 hp (157 kW) at 5500 rpm and 200 lbft (271 Nm) of torque at 4800 rpm. The J30A4 pushed output to 242 hp (180 kW) and 212 lbft (287 Nm) using a three-way VTEC system, a higher (10.0:1) compression ratio and a novel exhaust manifold cast as one piece with the cylinder head. It weighs nearly 20 lb (9.1 kg) less and is an inch shorter than J30A1. This version was on the Wards 10 Best Engines list for 2003 and 2004. In 2006 Honda created the J30A5 to mark the 30th anniversary of the Accord. It boosted output to 244 hp (182 kW) ( SAE Net 0804) and 211 lbft (286 Nm) (SAE Net 0804) of torque. According to Honda, horsepower gains were achieved with improvements to the airflow of the intake and exhaust system. Its bore and stroke is 89 mm 86 mm (3.50 in 3.39 in). Output was 225 hp (168 kW) at 5600 rpm and 217 lbft (294 Nm) at 4700 rpm for the J32A1, with the J32A2 raising output to 260 hp (194 kW) at 6200 rpm and 232 lbft (315 Nm) at 3500-5500 rpm. J30A4 Engine Specs Free Flowing IntakeexhaustA more aggressive camshaft, more free flowing intakeexhaust, and a 2-stage intake manifold produced a 33.55 hp (25.02 kW) increase over the J32A1. SAE changed the way they tested engine hp for the 2006-2008 TL is 258 hp (192 kW). The J32A3 includes a one-piece exhaust manifold cast with the cylinder head, first introduced on the J30A4. Primarily due to the cylinder liners being made from aluminum instead of cast-iron the engine weighs less than the J35Z engines. Behind the wheelAcura 3.2TL; The Luxuries add up except on the sticker.
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