How To Tell If My 4.6 Is 2v Or 3v

The Ford 4.6L V8 engine, the first fellow member of Ford's Modular overhead camshaft engine family in the production, was introduced in the 1991 Lincoln Town Machine. Information technology was a iv.half-dozen-liter 90-degree V-angle eight-cylinder gasoline engine with two valves per cylinder and SOHC design. After, this engine became the base of operations V8 in the Mustang GT. Ford as well has been produced a 4-valve DOHC version well known by SVT Cobra and Mach ane applications. This 32-valve DOHC 4.6L engine debuted in the 1993 Lincoln Marking VIII under name of 4.6L Four-Cam V8. The new Modular 4.6-liter V8 series replaced its pushrod-based predecessor - Ford's Small Block 5.0 H.O. engine.

Ford's 4.6L V8 has a deep-skirt aluminum or cast iron cylinder block (Romeo and Windsor castings), depending on model year and application. While Windsor fe blocks have "W" alphabetic character and dowel pins at the cantankerous-bolted main caps, Romeo iv.half dozen iron blocks have jackscrew cross-bolted master caps and are identified by "R" (but not all of them). Otherwise, they look the same. Aluminum cylinder blocks were cast at the Windsor Aluminum Plant (WAP) past the exception of older 90s Teksid blocks, which were cast in Turin, Italian republic. Aluminum blocks came with half dozen-bolt main bearing caps.

The angle between cylinder banks is 90 degrees. Deck height is 8.937 in (227.0 mm), and cylinder diameter spacing measures 3.937 in (100.0 mm). The engine cake features a nearly 1:1 bore-to-stroke ratio (foursquare configuration) that positively affecting on its noise, harshness, and vibration characteristics. Connecting rod length is 5.933 in (150.7 mm). Modular engines were equipped with half-dozen- or 8-commodities crankshafts. Eight-bolt steel crankshaft was used in truck and high-performance applications, while six-bolt crankshafts usually were fitted in Romeo blocks nether the hoods of passenger cars. All engines came with forged pistons and cracked powdered metal connecting rods from the manufactory.

The 4.six engine can exist fitted with 3 types of aluminum cylinder heads: 2- valve (1990-2014) and iii-valve (2005-2010) with unmarried overhead camshaft (SOHC) valvetrain and 4-valve with dual-overhead-camshaft configuration. Unmarried camshafts, as well as individual intake and exhaust camshafts in the 4-valve version, are driven by two timing chains (by one for each caput). Valvetrain for all of them features low-friction roller rocker artillery and hydraulic lash adjusters. The 3-valve cylinder head features apex-shaped combustion chambers with a centralized spark plug, two intake valves, and one large exhaust valve designed to improve velocity and volume. 4.6 3V SOHC engines also were equipped with Ford's variable camshaft timing (VCT) organisation. Ford four.6 2v/3v engines feature the intake manifold made of composite material.

All 32-valve 4.6L DOHC engines had aluminum blocks but (except 2003-2004SVT Cobra, which had an iron block with four-bolt main begetting caps). Each cylinder has two intake and 2 exhaust valves. The 1993-1998 four-valve heads feature private intake port for each intake valve (split-port design). In 1999, cylinder heads were revised, and engineers implemented tumble-style intake ports where 1 intake port feeds ii intake valves. In that twelvemonth, they besides replaced the variable runner-length intake manifold by a stock-still runner-length intake manifold and changed camshaft profiles.

Modular 4.6L V8s had a traditional sequential multi-port fuel injection system controlled by ECU and mechanical/electronic throttle trunk. They likewise fitted with an electronically controlled, individual coil-on-plug ignition system.

The four.vi-liter 4-valve V8 engine featured on Ward'south x All-time Engines List for 1996 and 1997 years, while the iii-valve version was on the list for 2005-2008 and received a variety of accolades. Using this engine as a base, Ford adult a bigger 5.4-liter engine series, which as well gained good success in sales. The production of the 4.6L Modular engine was discontinued in 2014. The final engine of the line was a 4.6 2v engine for a 2014 model year Ford E-Series van. By that time, the new Modular five.0L Coyote engine, its successor, already had been produced for iii years.

Engine Specs

Manufacturer

Romeo Engine Plant in Romeo, Michigan;
Windsor Engine Plant in Windsor, Ontario;
Essex Engine Plant in Windsor, Ontario

Production years

1991-2014

Cylinder cake material

Aluminum, Cast iron

Cylinder head material

Aluminum

Fuel system

Sequential multi-port fuel injection

Valves per cylinder

2/iii/4

Valvetrain layout

SOHC/DOHC

Bore, mm

90.2 mm (3.55 in)

Stroke, mm

90.0 mm (3.54 in)

Displacement, cc

4,601 cc (280.8 cu in)

Blazon of internal combustion engine

Four-stroke, naturally aspirated/supercharged

Compression Ratio

9.0:one - 1990-2000 SOHC 2-valve engine;
9.375:1 - 2000+ SOHC 2-valve engine;
9.8:1 - SOHC 3-valve engine;
9.85:ane - 1996-1998

Power, hp

190-260 hp (142-194 kW)/4,400-four,750 - 2-valve SOHC;
292-315 hp (218-235 kW) - iii-valve SOHC;
280-390 hp (209-291 kW) - iv-valve DOHC

Torque, lb ft

260-302 ft-lb (353-409 Nm)/3,250-four,000 - 2-valve SOHC;
315-325 ft-lb (427-441 Nm) - 3-valve SOHC;
265-452 ft-lb (359-613 Nm) - 4-valve DOHC

Firing society

1-3-7-two-6-v-iv-eight

Engine oil weight

SAE 5W-xx

Engine oil chapters, liter

5.vii l (6.0qts) with oil filter

Oil alter interval, mile

v,000 (10,000 km)/6 months

Applications

iv.6 2V: Lincoln Town Car (Touring Sedan), Ford F-Series, Ford Eastward-Series, Ford Mustang GT, Ford Crown Victoria, Ford Thunderbird, Ford Explorer, Mercury Mountaineer, Mercury Grand Marquis, Mercury Cougar, MG ZT 260, Rover 75 V8, Mobility Ventures MV-one.
4.6 3V: Ford Mustang GT, Ford Mustang Bullitt, Ford Explorer Sport Trac, Ford Explorer, Ford F-Series, Mercury Backwoodsman.
4.6 4V: Ford Mustang SVT Cobra, Ford Mustang Mach 1, Lincoln Mark Eight, Lincoln Continental, Lincoln Aviator, Mercury Marauder, Marcos Mantis (GT), Panoz AIV Roadster, Panoz Esperante, MG X-Power SV, Koenigsegg CC8S, Koenigsegg CCR V8.

Ford four.half-dozen V8 Modular Engine Problems and Reliability

Ford's Modular 4.half-dozen V8 has earned a highly positive reputation amongst owners in terms of reliability and longevity. The engine can hands run well over 200,000 miles. Some taxi services used Crown Victorias with iv.vi V8 until impressive 300,000 or fifty-fifty 400,000 miles. But of course, ideal engines practice not exist, and this engine has several mutual problems and designed flaws that currently are widely known.

The offset widespread problem is plastic intake manifold cracking. This problem tin can be constitute in 4.6L SOHC two-valve engines produced from 1996 to 2001. In that period, Ford used a nylon composite intake manifold manufactured past DuPont, this manifold was prone to failure without any alert or sign. The reason is the intake manifold could non handle stress on the material acquired by thousands of heat/cool cycles (expansion and contraction) and boosted forces/vibrations coming from the alternator bracket mounted right into the plastic. As a issue, this manifold can crevice and divide, the heater hose and coolant temperature sensor tin loosen, which would result in an engine coolant leak and vehicle overheating. Late in 2001, Ford replaced the all-plastic manifold with a revised intake manifold that uses cast aluminum at the failure points.

A short thread depth in the aluminum cylinder heads is the root of the second common trouble - stripping of cylinder head spark plug threads. Be conscientious while irresolute spark plugs on any Ford four.6 V8s, as it is so easy to over-torque them and striping threads. Ford recommends a threaded insert as the method to repair stripped thread and even provides a tool kit specifically for that.

Source: https://www.motorreviewer.com/engine.php?engine_id=186