Mazda Mazda6 - Features; Outline; Outline of Construction; Specifications

B2–2
OUTLINE
OUTLINE OF CONSTRUCTION
A6E230202000201
• MZR-CD (RF Turbo) engine is newly adopted as Mazda6 (GG, GY).
• The construction of MZR-CD (RF Turbo) engine and operation which were newly adopted for the Mazda6 (GG,
GY) are the same as the current Mazda MPV(LW) MZR-CD (RF Turbo) engine model and current Mazda 323
(BJ) RF Turbo engine model except for the following components. (See Mazda MPV Workshop Manual
Supplement 1737-1*-02C.), (See Mazda 323 Workshop Manual Supplement 1633-10-98G.)
— Engine mount
• The construction and the operation of the engine mount for the new Mazda6 (GG, GY) MZR-CD (RF Turbo)
engine model is the same as the current Mazda6 (GG). (See Mazda6 Training Manual 3359-1*-02C)
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FEATURES
A6E230202000202
Improved engine performance
• Coated pistons have been adopted.
Reduced engine noise and vibration
• An aluminium alloy oil pan upper block has been adopted.
• An eight counter weight crankshaft has been adopted.
• A crankshaft pulley cover has been adopted.
• An engine cover with insulator has been adopted.
• A pendulum type engine mount has been adopted.
Improved serviceability
• A serpentine type drive belt has been adopted.
• An auto tensioner that automatically adjusts the drive belt tension has been adopted.
Improved design
• An engine cover has been adopted.
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SPECIFICATIONS
A6E230202000203
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OUTLINE
Item
Specifications
New Mazda6 (GG, GY) Current Mazda MPV (LW)
MZR-CD (RF Turbo) MZR-CD (RF Turbo)
Type Diesel, 4-cycle
Cylinder arrangement and number In-line, 4-cylinder
Combustion chamber Direct injection
Valve system SOHC, belt-driven, 16-valve
Displacement (ml {cc, cu in}) 1,998 {1.998, 122.9}
Bore × stroke (mm {in}) 86.0 × 86.0 {3.39 × 3.39}
Compression ratio 18.4
Compression pressure
(kPa {kgf/cm
2
, psi} [rpm])
3,500 {35.7, 507.7} [250]
Valve timing
IN
Open BTDC (°)6
Close ABDC (°)30
EX
Open BBDC (°)41
Close ATDC (°)8
Valve clearance
[engine cold]
IN (mm {in}) 0.12 —0.18 {0.005—0.007} (0.15±0.03 {0.006±0.0011})
EX (mm {in}) 0.32—0.38 {0.013—0.014} (0.35±0.03 {0.014±0.0011})