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More than three decades after first appearing on the scene, the flagship of the Mercury brand is coming to an end. Indeed, the entire Mercury brand is winding down, with 2010 models being the last for Ford's mid-level brand.

Historic Perspective

The Grand Marquis is a vehicle from another era, a traditional body on frame full-size, rear-wheel-drive sedan popular with the senior set and livery companies. Introduced in 1979 as the Mercury Marquis, this vehicle was originally offered in sedan, coupe and Colony Park station wagon body styles. In 1983, the Grand Marquis name came into existence, with "Marquis" moved to a smaller mid-size platform.

The Grand Marquis has always shared its platform with two other vehicles - the Ford Crown Victoria which is commonly configured as a police car or taxi cab and the Lincoln Town Car which is sold as a luxury sedan and limousine. The base engine early on was a 302 cubic inch (5.0-liter) V-8 with a 351 cubic inch (5.75-liter) V-8 optionally avaiable. These engines were paired with a three speed automatic or four-speed automatic overdrive transmission.

Panther Platform

As has always been the case, the defining characteristics of the Grand Marquis, Crown Victoria and Town Car - best known as Panther platform models - has been their six-passenger seating capacity, generous interior and cavernous trunk. Though smaller than the big sedans of the 1970s, these models have carried on the tradition of offering authentic full size room while delivering a comfortable ride.

Following its introduction in 1979, the Panther models were not completing overhauled again until 1992. Over the years the coupe and Colony Park body style disappeared and the sedan experienced exterior and interior updates.

Major Update

In 1992, the second generation Mercury Grand Marquis was introduced, and with it an all-new 4.6-liter V-8 engine paired with a four-speed automatic transmission. That engine was rated at 190 horsepower, up from the 150 in previous base engine. With dual exhaust, the Grand Marquis was rated at 210 horsepower. Four-wheel disc brakes and optional ABS and traction control were among the features of this model.

Since 1992, the Grand Marquis has remained essentially the same with sheet metal changes, updated grills and cabin improvements made the following two decades. For more than a decade, the Grand Marquis was rumored to be at its end, but Ford has always managed to find a market for its traditional rear-wheel-drive drive Panther models. The same V-8 offered in 1992 was sold in 2010 with horsepower rating increased to 224 and torque rated at 272 pound-feet.

Mercury Marauder

The Mercury Grand Marquis was given one final shot at glory when the Mercury Marauder was released and sold for the 2003 and 2004 model years. This vehicle, based entirely upon the Grand Marquis, was powered by the same 4.6-liter V-8, modified with parts commonly found in Mustang engines including block, heads and cams, rated at 302 horsepower and producing 318 pound-feet of torque. With black, red, gray or blue paint, dual exhaust system and modifications to it chassis and suspension, this model proved to be the hottest of the Panther cars ever produced. Alas, demand was limited and the car was discontinued after two years with approximately 11,000 models sold.

The Grand Marquis' demise comes as part of an overall decision made by the Ford Motor Company in 2010 to discontinue its Mercury brand founded by Edsel Ford in 1939. At its peak in the late 1970s, the Mercury marque was a top-seller, an intermim brand between Ford and Lincoln. From 2011 on, Mercury owners will have to look at premium Ford models such as the Taurus and Explorer or make their move up to Lincoln. Don't expect to find a Town Car for much longer as 2011 is slated to be the final model year for the last of the classic Panther platform models.

Matthew C. Keegan is a freelance writer who resides in North Carolina. Matt is a contributing writer for Andy's Auto Sport an aftermarket supplier of quality parts including hoods and fenders.

Ford Windsor engine - Rear Projection Bulb - China Bare Projector Lamps

Overview

The small block Ford engine uses a thin-wall cast iron block with a separate timing chain cover, made from aluminum. This feature differentiates it from later Cleveland, or 335-series engines, that use an integrated timing cover, cast in the block. All Windsors use 2-valve per cylinder heads regardless of whether they are "2V", "4V", or fuel-injected models. The 2V & 4V designations referred to the number of venturi (or barrels) in the carburetor, not the number of valves per cylinder. The valves are in-line and use straight 6-bolt valve covers.

Another simple differentiation between the Small Block and "335" Cleveland series is the location of the radiator hose the Windsor routed coolant through the intake manifold, with the hose protruding horizontally, while the Cleveland had the radiator hose connecting vertically to the engine block. The Cleveland and later "Modified" engines used a canted valve design, allowing for larger valves within the same 4" bore. Something worth noting was the fact that the Ford Engineers designed the Cleveland heads with the same bore spacing and head bolt configuration making it possible (with some light machine work) to bolt Cleveland heads to the Windsor block and in 1969 they did just that creating the Boss 302.

The oil routing in the engine block is unique in that a third passage is drilled parallel to the tappet passages. This passage ensures that oil reaches the main and cam bearings before the tappets, reducing the likelihood of lubricant starvation of the bearings (unlike the 351 Cleveland and the 385 series). The tappets are fed from an inverted 'V' passage cast in the rear under the intake manifold that connects with this passage and is sealed with a steel cap. The third oil passage is visible from the rear of the block with the transmission components removed. It is under and slightly right of the right bank tappet passage. The tappets on the left bank are the farthest from the oil pump and are last to be pressurized by oil upon a dry start. This gives an impression that there is insufficient lubrication, but this is normal and the noise ceases after several seconds of operation.

With the exception of the 289 HiPo, Boss 302 and 351W, all connecting rods use the same 5/16 in. dia. bolts. The rod forgings had undergone some changes throughout its history. The 221, 260 and early 289 (C2OZ-A and C3AE-D) rods used an oil squirt hole to lubricate the piston pin and rings. The oil squirt hole was discontinued in 1964. The same forging continued to be used up to 1967 and all were the same length (5.155 in.). The 302 used a shorter beam (C8OE-A 5.090 in.) but used the same cap up to 1970. In 1971 the cap design was changed from flanged to flat (D1OE-A). This was changed back to the flange design in 1988 due to fatigue failures from increased power output of fuel injection and continued until the end of production. The 289 HiPo and Boss 302 were the same length (5.155 in) used heavier beam and cap forgings and 3/8 in bolts but were machined differently. The former used square head bolts and square cut and the latter were spot faced for 'football head' bolts.

221

The first engine of this family, introduced for the 1962 model year as an option on the Ford Fairlane and Mercury Meteor, had a displacement of 221 cu in (3.6 L), from a 3.5 in (89 mm) bore and 2.87 in (72.9 mm) stroke, with wedge combustion chambers for excellent breathing. An advanced, compact, thinwall-casting design, it was 24 in wide, 29 in long, and 27.5 in tall (610 mm 737 mm 699 mm). It weighed only 470 lb (210 kg) dry despite its cast iron construction, making it one of the lightest and most compact V8 engines of its day.

In stock form it used a two-barrel carburetor and a compression ratio of 8.7:1, allowing the use of regular (rather than premium) gasoline. Valve diameters were 1.59 in (40.4 mm) (intake) and 1.388 in (35.3 mm) (exhaust). Rated power and torque (SAE gross) were 145 hp (108 kW) @ 4400 rpm and 216 lbft (293 Nm) @ 2200 rpm.

The 221 was dropped after the 1963 model year.

260

The second version of the Windsor, introduced during the middle of the 1962 model year, had a wider bore of 3.80 in (96.5 mm), increasing displacement to 260 cu in (4.3 L). Compression ratio was raised fractionally to 8.8:1. The engine was slightly heavier than the 221, at 482 lb (219 kg). Rated power (still SAE gross) rose to 164 hp (122 kW) @ 4400 rpm, with a peak torque of 258 lbft (350 Nm) @ 2200 rpm.

In 1962 and 1963 valve diameters remained the same as the 221, but starting in 1964 they were enlarged to 1.67 in. (42.4 mm) (intake) and 1.45 in (36.8 mm) (exhaust). Rated power was not changed.

In 1963 the 260 became the base engine on full-size Ford sedans. Later in the model year its availability was expanded to the Ford Falcon and Mercury Comet. The early "1964" Ford Mustang also offered the 260, although it was dropped by mid-year, as did the 1964-1966 Sunbeam Tiger Mk I. The 1967 Sunbeam Tiger Mk II used the 289 CID V8 (see 289).

The special rally version of the Falcon and Comet and early AC Cobra sports cars used a high-performance version of the 260 with higher compression, hotter camshaft timing, and a four-barrel carburetor. This engine was rated (SAE gross) 260 hp (194 kW) @ 5800 rpm and 269 lbft (365 Nm) @ 4800 rpm.

Ford dropped the 260 after the 1964 model year.

289

289 Windsor V8 in a 1965 Ford Mustang

The 289 cu in (4.7 L) Windsor was also introduced in 1963. Bore was expanded to 4.0 in (102 mm), becoming the standard bore for most factory Windsor engines. The 289 weighed 506 lb (230 kg).

In 1963 the 289 was available in two forms: with a two-barrel carburetor and 8.7:1 compression, (SAE gross) rated at 195 hp (145 kW) @ 4400 rpm and 258 lbft (350 Nm) @ 2200 rpm, and with a four-barrel carburetor and 9.0:1 compression, rated at 210 hp (157 kW) @ 4400 rpm and 300 lbft (407 Nm) @ 2800 rpm. The two-barrel 289 replaced the 260 as the base V8 for full-sized Fords.

Both 1963 and 1964 versions had a five-bolt bell housing pattern that was different from later six-bolt units (Mustangs switched bolt patterns around August 3, 1964).

For 1965 the compression ratio of the base 289 was raised to 9.3:1, increasing power and torque to 200 hp (149 kW) @ 4400 rpm and 282 lbft (382 Nm) @ 2400 rpm. The four-barrel version was increased to 10.0:1 compression, and was rated at 225 hp (168 kW) @ 4800 rpm and 305 lbft (414 Nm) @ 3200 rpm.

Engine specifications were unchanged for 1966 and 1967. In 1968 the four-barrel 225 hp (168 kW) engine was dropped, leaving the two-barrel now reduced back to 195 hp (145 kW) and the HiPo. 1968 was the last year of production for the 289.

The 289 was also the engine for the first Ford Falcon GT, the XR GT. (Australia)

289 "HiPo" (K-code)

Ford 289 K-code engine in a Shelby GT 350. Note that the radiator hose connects to the intake manifold, a telltale Windsor feature.

A high-performance version of the 289 engine was introduced late in the 1963 model year as a special order for Ford Fairlanes and Mercury Comets. The engine is informally known as the "HiPo" or the K-code (after the engine letter used in the VIN of cars so equipped). Starting in June 1964, it became an option for the Mustang.

The HiPo engine was engineered to increase performance and high-RPM reliability over standard 289 fare. It had solid lifters with hotter cam timing; 10.5:1 compression; a dual point, centrifugal advance distributor; smaller combustion chamber heads with cast spring cups and screw-in studs; low restriction exhaust manifolds; and a bigger, manual choke 595 CFM carburetor (std 289 4v was 480 CFM). The water pump, fuel pump, and alternator/generator pulley were altered; fewer vanes, extra spring, and larger diameter respectively; to help handle the higher RPMs. Even the HiPo fan was unique. Bottom end improvements included thicker main bearing caps and balancer, larger diameter rod bolts, and a hardness tested and counterweighted crankshaft, all for high-rpm reliability. The HiPo carried SAE gross ratings of 271 hp (202 kW) @ 6000 rpm and 312 lbft (423 Nm) @ 3400 rpm.

The HiPo engine was used in modified form by Carroll Shelby for the 1965-1967 Shelby GT350, raising rated power to 306 hp (228 kW) @ 6000 rpm through use of special exhaust headers, an aluminum intake manifold, and a larger carburetor. The Shelby engine also had a larger oil pan with baffles to reduce oil starvation in hard cornering. Shelby also replaced the internal front press-in oil gallery plugs with a screw-in type plug to reduce chances of failure.

From 1966 to 1968, Shelby offered an optional Paxton supercharger for the 289, raising its power (on Shelby GT350s) to around 390 hp (291 kW).

The K-code HiPo engine was an expensive option and its popularity was greatly diminished after the 390 and 428 big-block engines became available in the Mustang and Fairlane lines, which offered similar power (at the expense of greater weight) for far less cost.

302

302 "4V" V8 in a 1968 Mercury Cougar

302 "Hi-Po" V8 in a 1967 Ford Mustang

Note that there was also a 302 cubic inch 335 Series engine "302 Cleveland" produced by Ford Australia for the Australian market

In 1968 the small block Ford was stroked to 3.0 in (76.2 mm), giving a total displacement of 302 CI (4.942L). The connecting rods were shortened to allow the use of the same pistons as the 289. It replaced the 289 early in the 1968 model year.

The most common form of this engine used a two-barrel carburetor, initially with 9.5:1 compression. It had hydraulic lifters and valves of 1.773 in (45 mm) (intake) and 1.442 in (36.6 mm) (exhaust), and was rated (SAE gross) at 220 hp (164 kW) @ 4600 rpm and 300 lbft (407 Nm) @ 2600 rpm. Optional was a four-barrel version rated at 250 hp (186 kW) @ 4800 rpm.

For 1968 only, a special high-performance version of the 302 was offered for the Shelby GT350[citation needed]. Its main features included an angled, high-rise aluminum or iron intake manifold, a larger Holley four-barrel carburetor, and bigger valves of 1.875 in (47.6 mm) intake and 1.6 in (41 mm) exhaust. It had a longer-duration camshaft, still with hydraulic lifters. The block was a high-strength, higher nickel content design made in Mexico. "Hecho en Mexico" casting marks are present in the lifter valley and its main strength was the appearance of much larger and stronger two-bolt main bearing caps on the engine's bottom end. The heads had special close tolerance pushrod holes to guide the pushrods without rail rocker arms or stamped steel guide plates. The combustion chambers also featured a smaller quench design for a higher compression ratio and enhanced flow characteristics. Additionally, high flow cast exhaust manifolds similar to those on the 289 HiPO K-code engine further improved output. Heavy-duty connecting rods with high strength bolts and a nodular iron crankshaft were also included in this package. Rated power (SAE gross) was estimated at 315 hp (235 kW) @ 6000 rpm and 333 lbft (451 Nm) @ 3800 rpm. The package, which cost $692 (USD) including some other equipment, was not popular and did not return for 1969. This engine was not a factory engine. Rather, like all Shelby Mustang engines, it was modified by Shelby American in their capacity as a vehicle upfitter. This special engine is well documented in the FORD factory engine repair manual for 1968 Mustangs and Fairlanes. This engine block is considered the strongest production 302 block other than the Boss 302 and the Trans Am 302. It is considered to be on par and equal in strength to the K-code HP 289 block. The heavy duty Mexican 302 block as it now known was produced for several more years and even showed up on FORD trucks and vans throughout the late 1970s and early 1980s.

Emission regulations saw a progressive reduction in compression ratio for the 302 two-barrel, to 9.0:1 in 1972, reducing SAE gross horsepower to 210 hp (157 kW). In that year U.S. automakers began to quote horsepower in SAE net ratings; the 302 two-barrel carried a net rating of 140 hp (104 kW). By 1975 its power would drop as low as 122 hp (91 kW). Not until fuel injection began to appear in the 1980s would net power ratings rise above 200 hp (149 kW).

Throttle body fuel injection first appeared for the 302 on the Lincoln Continental in 1980, and was made standard on all applications in 1983 except manual transmission equipped Mustangs and Capris, equipped first with two-barrel(1982), then later 4-barrel carburetor(1983-85) The block was fitted with revised, taller lifter bosses to accept roller lifters, and a steel camshaft in 1985, and electronic sequential fuel injection was introduced in 1986. While sequential injection was used on the Mustang since 1986, many other vehicles, including trucks continued to use a batch fire fuel injection system. The speed-density based EFI systems used a large, two-piece, cast aluminum manifold. It was fitted on all engines through 1988, after which year it was replaced by a mass-air type measuring system, with the same manifold. The MAF system continued, with minor revisions, until the retirement of the engine in 2001.

The 302 was also offered for marine applications in both standard and reverse rotation setups.

In the 1980s the 302 became more commonly known as the 5.0 Liter, although its metric displacement (4942 cc) accurately rounds to 4.9 L. It is speculated[who?] that Ford used the "5.0" moniker to distinguish the 302 from the 300 cu in inline Six, which was known as the 4.9. Despite its advertised displacement, Car and Driver referred to the 302 correctly as a 4.9 liter engine.

The 302 remained a mainstay of various Ford cars and trucks through early 2001, although it was progressively replaced by the 4.6 L Ford Modular engine starting in the early 1990s. The last 302 engine was produced for installation in a production vehicle was at Cleveland Engine Plant #1 in December 2000, as part of a build ahead to supply Ford of Australia, who installed their last such engine in a new vehicle in August 2002. The 302 is still available as a complete crate motor, from Ford Racing and Performance Parts.

Ford Australia also built some stroked, 5.7 L (~342 cu in) Windsors. With reworked GT40P heads (featuring larger valves), a unique eight trumpet inlet manifold, long throw crank, H beam rods and roller rockers. They produced 335 hp (250 kW) and 369 lbft (500 Nm).

Boss 302

Boss 302 engine

Main article: Ford Boss 302 engine

The Boss 302 was a performance variant of the Windsor, putting what would become Cleveland heads on a special, heavy duty, 4 bolt main Windsor block to improve rated power to 290 hp (216 kW). According to some reports, the canted valve, deep breathing, high revving engine could produce more than 310 hp (231 kW), although as delivered, it was equipped with an electrical rev limiter that restricted maximum engine speed to 6150 rpm. A bulletproof bottom end, thicker cylinder walls, steel screw-in freeze plugs, race prepped crank, special HD connecting rods and Cleveland style forged pistons kept the engine together at high speeds. The key to this engine's power was the large port, large valve, quench chambered, free flowing heads. The Boss 302 Mustang was offered only for the 1969 and 1970 model years.

351W

351 Windsor V8 in a 1969 Ford Mustang

The 351W is often confused with the 351 Cleveland, which is a different engine of identical displacement

The 351 cu in (5.8 L) Windsor featured a 1.3 in (32.5 mm) taller deck height, allowing a stroke of 3.5 in (88.9 mm). Although related in general configuration to the 289-302 and sharing the same bell housing, motor mounts and other small parts, the 351W had a unique, tall deck block, larger main bearing caps, thicker, longer connecting rods, and a distinct firing order (1-3-7-2-6-5-4-8 vs. 1-5-4-2-6-3-7-8), adding some 25 lb (11 kg) to the engine's dry weight. The distributor is slightly different to accommodate a larger oil pump shaft and larger oil pump. Some years had threaded dipstick tubes. It had a unique head which optimized torque over high-rpm breathing, frequently replaced by enthusiasts with aftermarket heads providing better performance. Ford offered a performance head that was a stock part on 302 equipped mid 1990's Mustangs called the GT-40 head (casting id F3ZE-AA). The early 1969 and 1970 heads had larger valves and ports for better performance. The intake valves and ports were slightly larger on the early engines. The head castings and valve head sizes from 1969 to 1976 were different, differing in passages for air injection and spark plug diameters (69-74 18 mm, 75-up 14 mm). From 1977 onward, the 351W shared the same head casting as the 302, differing only in bolt hole diameters (7/16 inch for 302, 1/2 inch for 351W). Early blocks (casting id C9OE-6015-B had enough metal on bearing saddles 2,3 and 4 for four bolt mains) as with all SBF, were superior in strength to most late model, lightweight castings. Generally the 1969 to 1974 blocks are considered to be far superior in strength than the later blocks making these early units some of the strongest and most desirable in the entire SBF engine family including the 335 series. During the 1980s a four barrel version (intake manifold casting id E6TE-9425-B) was re-introduced for use in light trucks and vans. In 1988 fuel-injection replaced the four barrel carburetor. Roller lifters were introduced in this engine in 1994.

The original connecting rod beam (forging id C9OE-A) featured drilled oil squirt bosses to lubricate the piston pin and cylinder bore and rectangular head rod bolts mounted on broached shoulders. There were a number of fatigue failures attributed to the machining of the part and so the bolt head area was spot-faced to retain metal in the critical area, requiring the use of 'football head' bolts. In 1975, The beam forging (D6OE-AA) was updated with more metal in the bolt head area. The oil squirt bosses were drilled for use in export engines, where the quality of accessible lubricants was questionable. The rod cap forging remained the same on both units (part id C9OE-A). In 1982, the design of the Essex V6 engine used a new version of the 351W connecting rod (E2AE-A), the difference between the two parts was that the V6 and V8 units was machined in metric and SAE units respectively. The cap featured a longer boss for balancing than the original design.

The block underwent some changes since its inception. In 1971, The deck height was extended from 9.480 in. to 9.503 in. (casting id D1AE-6015-DA) to lower the compression ratio to reduce NOx emissions without the need to change piston or cylinder head design. In 1974 a boss was added on the front of the right cylinder bank to mount the air injection pump (casting id D4AE-A). In 1974 the oil dipstick tube moved from the timing case to the skirt under the left cylinder bank near the rear of the casting. These details made swapping older blocks from passenger cars with front sump oil pans to more recent rear-sumped Mustang and LTD/Crown Vic Ford cars more difficult unless an oil pan had the dipstick mounted therein. In the 1990s the rear main seal was changed from a two-piece component to a one-piece design and provisions for roller tappets were also added.

Introduced in 1969, it was initially rated (SAE gross) at 250 hp (186 kW) with a two-barrel carburetor or 290 hp (216 kW) with a four-barrel. When Ford switched to net power ratings in 1972 it was rated at 153 to 161 hp (114 to 120 kW), although actual, installed horsepower was only fractionally lower than in 1971.

During the 1990s, motor enthusiasts were modifying 351 Cleveland 2V cylinder heads (by re-routing coolant exit from the block surfaces to the intake manifold surfaces) for use in the 351W resulting in the Clevor (a portmanteau of Cleveland and Windsor). This modification requires the use of custom pistons by reason of differing combustion chamber terrain (canted valves vs. straight valves) and intake manifolds for the Boss 302 was not wide enough and the intake ports were too large. This combination yielded the horsepower potential of the 351C with the ruggedness of the 351W small block. This was possible because more 351C 2V cylinder heads were made than corresponding engine blocks (the 351M and 400 used the same head as the 351C 2V).

Boss 351

Main article: Ford Boss 351 engine

It is a crate engine version from Ford Racing.

255

In 1980, a very urgent need to meet EPA CAFE standards led to the creation of the 255 cu in (4.2 L) version, essentially a 302 with the cylinder bores downcored to 3.68 in (93.5 mm). Rated power (SAE net) was 115-122 hp (86-91 kW), depending on year and application. Cylinder heads used smaller combustion chambers and smaller valves and the intake ports were ovals whereas the others were rectangular. The only externally visible cue was the use of an open runner intake manifold with a stamped steel lifter valley cover attached to its underside, giving the appearance of previous generation engines, such as the Y-Block and the MEL. It was optional in Fox chassis cars including the Mustang and corporate cousin Mercury Capri, Thunderbird, Fairmont, and standard equipment in the Ford LTD. Poorly received thanks to its dismal performance and mediocre fuel economy, it was dropped after the 1982 model year, and is considered one of the worst modern Ford engines.

See also

List of Ford engines

References

^ http://www.fpv.com.au/theheritage/falcon/2001auiiite50andts50.aspx

External links

foxbodychallenge.com - Website & database dedicated Ford Mustang & the 302ho

302w.com - Website & Forums dedicated to the Ford Windsor 302 Engine

Short descriptions of Ford overhead valve V8 engines

Pirates Of Horsepower - blog on building a 351w Ford stroker

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Categories: History of Windsor, Ontario | Ford enginesHidden categories: Articles lacking sources from February 2008 | All articles lacking sources | Articles that may contain original research from August 2008 | Articles needing cleanup from February 2008 | All pages needing cleanup | All articles with unsourced statements | Articles with unsourced statements from June 2008 | All articles with specifically-marked weasel-worded phrases | Articles with specifically-marked weasel-worded phrases from February 2009

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