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Mazda F engine
Carburetted 8-valveFE engine in a 1983626 GC
Overview
Manufacturer	Mazda
Production	1977–2002
Layout
Configuration	Inline-4
Displacement	1.8 L (1,769 cc) 1.8 L (1,789 cc) 1.8 L (1,839 cc) 2.0 L (1,970 cc) 2.0 L (1,991 cc) 2.0 L (1,998 cc) 2.2 L (2,184 cc)
Cylinder bore	80 mm (3.15 in) 81 mm (3.19 in) 83 mm (3.27 in) 86 mm (3.39 in)
Piston stroke	77 mm (3.03 in) 85 mm (3.35 in) 86 mm (3.39 in) 88 mm (3.46 in) 92 mm (3.62 in) 98 mm (3.86 in)
Cylinder block material	Cast iron
Cylinder head material	Alloy
Valvetrain	SOHC 2 & 3 valves x cyl. DOHC4 valves x cyl.
Compression ratio	7.8:1, 8.6:1, 9.1:1, 9.2:1, 9.7:1, 10.0:1
Combustion
Turbocharger	IHI RHB5 VJ11 with air-to-airintercooler (some versions)
Fuel system	Carburetor,Fuel injection
Fuel type	Gasoline
Cooling system	Water cooled
Output
Power output	73–170 PS (54–125 kW; 72–168 hp)
Torque output	89–190 lb⋅ft (121–258 N⋅m)

TheF engine family fromMazda is a mid-sizedinline-fourpiston engine with iron block, alloy head and belt-drivenSOHC and DOHC configurations. Introduced in 1983 as the 1.6-litreF6, this engine was found in theMazda B-Series truck andMazda G platform models such asMazda 626/Capella as well as many other models internationally includingMazda Bongo andFord Freda clone,Mazda B-series basedFord Courier,Mazda 929 HC and theGD platform-basedFord Probe

There were four basic head types within the F range, the diesel SOHC 8-valve (R-series), the petrol SOHC 8-valve, petrol SOHC 12-valve, and the petrolDOHC 16-valve. These heads came attached to multiple variations of the different blocks and strokes. Only the petrol 8-valve and 12-valve shared the same gasket pattern. It was built at theMiyoshi Plant inMiyoshi,Hiroshima,Japan.

These engines are only the predecessors to the F-series engines, in no other way related. They were fitted torear-wheel drive models in alongitudinal arrangement. This is in contrast to the successor engines that were designed fortransversefront-wheel drive applications as had become the trend in the late 1970s and early 1980s.

The VC is a 1.8 L (1,769 cc)overhead camshaft inline-four, with a bore and a stroke of 80 mm × 88 mm (3.15 in × 3.46 in). It was all new in 1975 (pre-1975 1.8 Couriers got the earlier, long-strokeVB engine) and has an alloy eight-valve head on an iron block. Output varied considerably depending on market and installation, in a 1981 UK-market B1800 it is 84 hp (63 kW; 85 PS)DIN at 5000 rpm and 13.7 kg⋅m (134 N⋅m; 99 lb⋅ft) at 2500 rpm.^[1]

Applications:

• 1975–1978Mazda Luce / 929
• 1975–1977Mazda Cosmo / 121
• 1977–1981Mazda Luce / 929
• 1977–1984Mazda B1800/ProceedPE2V
• 1978–1982Mazda Capella/626
• 1975–1978Ford Courier
• 1978–1983Mazda Bongo
• 1974–1977Mazda Parkway

The 2.0 L (1,970 cc) was designatedMA. Bore was as for the VC, 80 mm (3.15 in), but stroke was increased to 98 mm (3.86 in). This SOHC engine with a 2–barrelcarburettor produced 89 hp (66 kW; 90 PS) and 109 lb⋅ft (148 N⋅m). A more fuel-efficient 1–barrel version produced 77 hp (57 kW; 78 PS). Later on, this engine was designated theF.

Applications:

• 1981–1982Mazda Luce/Mazda Cosmo
• 1975–1980Mazda Luce/929
• 1979–1988Mazda 929 Wagon
• 1979–1982Mazda Capella/626
• 1977–1985Mazda B2000 (Officially, there was no 1985 year model for the B-Series in the USA. They skipped to 1986 for this line of vehicles for that market.)
• 1977–1985Ford Courier (The Ford Courier was canceled in the US in 1982 to make room for the Ford Ranger the following year.)

The smallest of the F-family engines is the F6 8-valve SOHC engine. Essentially a de-bored and de-stroked version of the base FE 2.0 with a bore and stroke of 81 mm × 77 mm (3.19 in × 3.03 in). At a compression ratio of 8.6:1, output is 73 hp (54 kW; 74 PS) at 5500 rpm and 89 lb⋅ft (121 N⋅m) at 3500 rpm. It replaced the F/NA 1.6 from the previous generation.

Applications:

• 1983–1987Mazda Capella/626
• 1983–1985Mazda B1600

A destroked FE at 77 mm (3.03 in), the 1.8 L (1,789 cc) F8 comes in several configurations including a 12-valve head and fuel injection later in its life. It has a very highrod/stroke ratio of 2:1, bore and a stroke of 86 mm × 77 mm (3.39 in × 3.03 in). With a compression ratio of 8.6:1, power output is 80 hp (60 kW; 81 PS) at 5500 rpm and 98 lb⋅ft (133 N⋅m) at 2500 for the 8-valve SOHC carburetted versions.

Applications:

• 1983–1991Mazda Capella/626
• 1988–1992Mazda Persona/Eunos 300
• 1984–2005Mazda Bongo/Ford Econovan
• 1989–1994Kia Capital
• 1988–1991Kia Concord
• 1993–1999Asia Rocsta

TheF8-DOHC is aDOHCF8 and basically a de-stroked version of theFE-DOHC displacing 1.8 L (1,789 cc). It uses the same exhaust cam, but a different intake cam with less lift and a long, single-runnerintake manifold. TheF8 is usually identified by its unpainted cam cover. Output was 115 PS (85 kW; 113 hp) at 6000 rpm and 115 lb⋅ft (156 N⋅m) at 5000 rpm. It is usually found in wagon variants.

Applications:

• 1988–1996Mazda Capella/626
• 1990–1992Mazda Persona/Eunos 300

The 2.0 L (1,998 cc)FE has a square 86 mm (3.39 in) bore and stroke. It was available as an 8-valve SOHC and 12-valve SOHC. Outputs are 82 PS (60 kW; 81 hp) at 5000 rpm and 152 N⋅m (112 lb⋅ft) at 2500 rpm for the 8-valve carburetor version, or 120 PS (88 kW; 118 hp) at 5300 rpm and 178 N⋅m (131 lb⋅ft) at 3700 rpm with fuel injection, 12-valveSOHC and a higher compression ratio (10.0:1 vs 8.6:1).

Applications:

• 1983–1991Mazda Capella/626
• 1982–1987Ford Telstar
• 1985–1987Mazda B-Series
• 1985–1999Mazda E-series
• 1981–1990Mazda 929
• 1987–1995Kia Concord

The 2.0 L (1,998 cc) fuel-injected,turbochargedFET version of the FE produced 135 hp (101 kW; 137 PS) at 5250 rpm and 175 lb⋅ft (237 N⋅m) at 2800 rpm.^{[citation needed]} It was a variant of the 8-valve SOHCFE Featuring a small turbocharger and no intercooler producing 7 psi (0.48 bar) of boost. As such it features the same 86 mm (3.39 in) bore and stroke of the FE. The Japanese variant of this engine was dubbed theMagnum Turbo and produces 145 PS (107 kW; 143 hp). Given that the peak power for thenaturally aspirated, fuel-injected FE is 118 hp (88 kW; 120 PS), the rated power for the FET is said to be conservative.

Applications:

• 1986–1987Mazda Capella/626
• 1986–1987Ford Telstar Turbo
• 1986–1987Mazda 929 coupe

TheFE-DOHC is the 16 valveDOHC variant of the FE. The official Mazda engine codes of newer iterations are FE-DE and FE-ZE, depending on output level. Commonly called theFE3 which is also stamped into its head castings. The FE-DOHC shares the same dimensions as the original FE-SOHC, including the square 86 mm (3.39 in) bore x stroke and it has a 1.74 rod/stroke ratio. The FE-DOHC is usually identified by a gold-coloured cam cover, however not always. There were at least five different FE-DOHC engines available with various compression ratio, camshaft and ECU tuning combinations, however none were fitted with a turbocharger from the factory. In European 10.0:1 compression, non-catalytic trim, the FE-DOHC produces 148 PS (109 kW) at 6000 rpm and 133 lb⋅ft (180 N⋅m) at 4000 rpm. The 9.2:1 compression, catalytic converter version produces 140 ps. The Japanese domestic market variants produce anywhere between 145 ps and 165 ps. The only vehicle with 165ps was the 96–97 Capellas Wagons, FX (MT or AT) or FX Cruising (Only exists in AT). These received different tail lights to the earlier wagons.

The FE-DOHC was a European and Japanese market engine only (excluding use by Kia), and as such was only ever delivered in vehicles by Mazda to countries in those markets, with the exception of New Zealand who also received European market models. The engine was first fitted to theGD model1988–1992 626 GT,1987–1991 Capella, and the626 Coupé GT 2.0i/Capella C2 GT-X and GT-R. In South Africa,Samcor – who built Mazdas under licence – also fitted the FE-DOHC engine to the Mazda 323 from 1991 to 1994.

Alongside the sedan, hatch and coupé models the FE-DOHC was also being used in theGV wagon, which ran until 1997. The rest of the world mainly received the FE-DOHC in the 1995–2003Kia Sportage, built by Kia under license. Kia first introduced the engine in March 1992, when they installed it in theKia Concord, a license built version of the 1982Mazda Capella. The Sportage variant was reconfigured for rear-wheel drive configuration with long single-runner intake manifold, low-duration cams and exclusively in the low compression ratio of 9.2:1.

Applications:

• 1988–1997Mazda Capella/626
• 1991–1993323 200i (South Africa)
• 1992–1993Ford Laser 2.0iRS and Meteor 2.0 16v (South Africa)
• 1995–2003Kia Sportage^[2]
• 1992–1995Kia Concord

Capella Cargo variants

The Mazda FE-DOHC uses a wide-angle, DOHC, belt-driven valvetrain configuration with flat-tappet 33 mm HLA bucket lifters. It is a non interference design. There are two valve springs per valve and four valves per cylinder. While a dual valve spring configuration is used, the stock springs are fairly low-sprung. Low spring rates were chosen for fuel efficiency and increased valvetrain longevity, and low friction with the dual valve springs for the reduction of harmonics and increased valve stability.

The head gasket used on the Kia version can be sourced in North America, but the builder must note that the coolant passage holes are configured for a RWD cooling system. Attempting to use the RWD head gasket in FWD cooling configuration will result in improper flow and can result in overheating of cylinder #4. Like many DOHC engines, this engine has an interference valvetrain design, making periodic timing belt changes vital to the engine's life. Should the timing belt break the engine should be replaced as piston and valvetrain damage will occur.^[2]

The Mazda FE-DOHC came with several different camshaft profiles from the factory. As such there were several camshaft combinations available.

The F8K1 was the intake camshaft for the F8-DOHC, only listed due to family ties.

The combinations available:

The FE-DOHC featured Mazda'sVICS system, short for Variable Inertia Control System, a variable intake setup to optimize runner length and resonance at different engine speeds. Much like Toyota'sAcoustic Control Induction System, it had two sets of intake runners, a long set for low-medium RPMs, and a short set for high RPMs. It was operated by a vacuum solenoid based on the engine's current speed, actuating a pair of butterflies inside the manifold to open or close the short runners past 5400 rpm. This system has been used on many Mazda engines since including the BP. The K-series V6 engines used a different principle to the same effect dubbedVRIS. Two versions of the VICS intake system exist, one has steeper straighter runners than the other, which is kinked for vehicle packaging reasons. VICS was not present on the F8-DOHC or some of Kia version of the FE-DOHC, both of which use a conventional intake manifold design.

The F2 is a stroked version of the FE with a bore and stroke of 86 mm × 94 mm (3.39 in × 3.70 in), for a displacement of 2.2 L (2,184 cc). Introduced for the 1988–1992GD platform cars, it can also be found in theB2200 pickup and Ford Probe. A high-output variant of the F2 codedF2H2 was used in RWD configuration in theMazda 929. The compression ratio was raised to 9.2:1 and produced 127 hp (95 kW; 129 PS)/141 lb⋅ft (191 N⋅m). Although available as an 8-valve SOHC in the B2200, this engine is most commonly a 12-valve SOHC. With an 8.6:1 compression ratio, it generates 110 hp (82 kW; 112 PS) at 4700 rpm and 130 lb⋅ft (176 N⋅m).

Applications:

• 1986–1991Mazda 929
• 1988–1992Mazda 626
• 1988–1992Mazda MX-6
• 1989–1992Ford Probe
• 1987–1999Mazda B2200

TheF2T is a turbocharged version of the F2 equipped with anIHI-supplied RHB5 VJ11 turbocharger and an air-to-airintercooler. Internally the engine retains its bore and stroke of 86 mm × 94 mm (3.39 in × 3.70 in), but has a lower compression ratio of 7.8:1. It produces 145 hp (108 kW; 147 PS) at 4300 rpm and 190 lb⋅ft (258 N⋅m). It is rumored that this figure was produced at the drive wheels, as this engine was suspected to be under-rated. However Mazda had only ever quoted these figures asSAE Net andDIN which arecrankshaft rating standards, as required by law in the countries where the cars were sold. Due to the increased torque output, Mazda was forced to increase the strength of the transmission for the F2T, producing the H-type, the strongestFWD gearbox Mazda produced at the time.

Applications:

• Mazda 626 GT
• Mazda MX-6 GT
• Ford Probe GT
• Ford Telstar TX5 Turbo

The R-series engines are diesel variants that are very closely related to the F-series, sharing essentially the same engine block.

TheFS andFP are structurally different from the original F-blocks with much smaller bore spacing, much shorter deck height and smaller head and journal dimensions. TheFS andFP are more closely related to theMazda BP engine than they are with the original F-engine.

The 2.0 L (1,991 cc)FS has a bore and stroke of 83 mm × 92 mm (3.27 in × 3.62 in) and produces 130 PS (96 kW; 128 hp) and 135 lb⋅ft (183 N⋅m) in its most common variant up to 170 PS (125 kW; 168 hp) in theJapanese domestic market. In 1998 the engine evolved into the FS-DE by undergoing several changes, most notably adistributorless ignition as well as the move fromhydraulic lifters to solid shim-on-bucket lifters. Japan received a couple of variations of the FS motor, all with increased power outputs. The highest is the Mazdaspeed Familia version of the FS-ZE which produces 170 PS (125 kW; 168 hp). Mazdaspeed US decided to turbocharge the US FS-DE, known as the FS-DET in 2003, for theMazdaspeed Protegé. This model generates 170 hp (127 kW; 172 PS), practically the same as the naturally aspirated Mazdaspeed Familia edition FS-ZE but with a plumper torque curve. This means that the Mazdaspeed Protegé's engine is internally identical to the regular FS-DE, except with a turbocharger installed.

The updated FS-DE engine did enjoy a few minor technical features, such as:

• Oil Squirters
• VICS (Variable Inertial Charge System) - A system that can vary the volume of the intake manifold resulting in a broader power band. There were known issues with this system, the most noteworthy was a defect which allowed screws that secured the VICSbutterfly valves to come loose and end up being sucked into the engine. Some engines had to be replaced entirely due to the extent of the damage caused.^[3]
• VTCS (Variable Tumble Control System) - A set of butterflies in the intake manifold that would close to promote low emissions combustion under cold start at low engine speeds. These had a reputation of being noisy at times.
• Windage Tray

Applications:

• 1993–2002Mazda 626
• 1993–1997Mazda MX-6
• 1999–2001Mazda MPV (Japan)
• 1999–2003Mazda Capella
• 2001–2003Mazda Protegé
• 1993–1997Ford Probe
• 1993–1999Ford Telstar

The 1.8 L (1,839 cc)FP is a destroked version of the FS, with a bore and stroke of 83 mm × 85 mm (3.27 in × 3.35 in). It produces 122 hp (91 kW; 124 PS) and 120 lb⋅ft (163 N⋅m). This engine is often incorrectly called theF8, which is the earlier destroked engine based on the FE. TheFP enjoys a much better power band vs the FS due to slightly different camshafts and a better rod ratio over the regular FS-DE.

TheFP is very close to the FS in many ways and shares a large percentage of parts but has its ownFP specific block, crank, rods, pistons and timing belt. The pistons for the FS produce a compression ratio of 9.1:1 (USDM) but whenFP pistons are used in the FS they yield 9.7:1 compression ratio. The biggest performance difference is that the European 1.8L FP & 2.0L FS both have maximum compression of 15 bar (220 psi) vs the North American 2.0L FS which has a maximum compression of 11.5 bar (167 psi). The KL & FS ATX engines both require 10° BTDC ignition timing while the FS MTX & FP require 12° BTDC. The FP does not share the same G25M-R transmission as the FS. In the Protegé it uses a F25M-R instead.

Applications:

• 1992–1993Eunos 500
• 1997–2001Mazda Capella/Mazda 626
• 1999–2000Mazda Protegé (ES models only)
• 1998–2003Mazda 323 Astina & Protege (Australia)
• 1998–2002Ford Laser
• 1999–2004Mazda Premacy

3. Chilton's Repair and Tune-up guide Mazda Pickups 1971–86 copyright 19864.http://protegefaq.net/

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