Mazda Training manual - part 15

 

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Mazda Training manual - part 15

 

 

Powertrain Engines 

• 

In order to remove the drive belt cut it through with a knife. New drive belts are supplied 
in a service kit, which also contains the SSTs (installation tool and guide tool) required 
for installation (refer to the workshop manual for details). 

 

NOTE:  The SSTs in the service kit are designed for single use only. 

 

L1001.4_01051 

 

Installation tool attached to the 
crankshaft pulley 

Installation tool attached to the 
crankshaft pulley (for installing the power 
steering oil pump drive belt on vehicles 
with A/C) 

Guide tool attached to the generator 
bracket 

 

 

 
 

Curriculum Training 

01-47 

Engines Powertrain 

Lubrication 

Features 

• 

The lubrication system of the MZI-type engines has the following features: 

– 

G-rotor type oil pump, directly driven by the crankshaft 

– 

Spin-on type oil filter  

– 

No oil jet valves 

 

Cooling System 

Features 

• 

The cooling system of the MZI-type engines has the following features: 

– 

Water pump driven by the accessory drive belt 

– 

Pressurized type  coolant reserve tank 

– 

Cooling fan controlled by relays 

 
 

01-48 Curriculum 

Training 

Powertrain Engines 

13B-MSP Rotary Engine 

• 

The 13B-MSP (Multi Side Port) rotary engine is fitted in the Mazda RX-8 models, and is 
available as a standard and a high-power version. It is equipped with a manifold injection 
system (two injectors per rotor on the standard power engine, and three injectors per 
rotor on the high-power engine) and a distributorless ignition system (two direct ignition 
coils per rotor). 

 

Mechanical 

Features 

• 

The mechanical system of the 13B-MSP engine has the following features: 

– 

Rotor housings with side intake and side exhaust ports  

– 

Rotors with bathtub shaped combustion chambers 

– 

V-ribbed belt drive with two belts and two manual tensioners 

 

Overview 

 

L1001.4_01114 

 

Curriculum Training 

01-49 

Engines Powertrain 

Construction 

• 

The main components of the rotary engine are the rotors, the eccentric shaft, the rotor 
housings, the front, rear and intermediate housings. 

• 

The rotor rotates within the rotor housing, which is sandwiched between the intermediate 
housing on one side, and the front or rear housing on the other, forming a sealed 
chamber. 

• 

The eccentric shaft transfers the rotational force of the rotors to the transmission. 

• 

The path of the rotor within the rotor housing is determined by the internal and stationary 
gears, which are phased, so that for every rotation of the rotor, the eccentric shaft 
rotates three times. 

 

L1001.4_01115 

 

Internal gear 

Spark plug bores 

Front rotor 

Rear rotor housing 

Eccentric shaft 

Intermediate housing 

Rear rotor 

10 

Front rotor housing 

Stationary gear 

11 

Front housing 

6 Rear 

housing 

  

 

01-50 Curriculum 

Training 

 

 

 

 

 

 

 

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