Page 2425 of 4264

ENGINE MECHANICAL (C24SE) 6A-5
contributing to reliable engine performance:
When raising or supporting the engine for any reason, do not use a jack under the oil pan. Due to the small
clearance between the oil pan and the oil pump strainer, jacking against the oil pan may cause damage to the
oil pick up unit.
The 12-volt electrical system is capable of damaging circuits. When performing any work where electrical
terminals could possible be grounded, the ground cable of the battery should be disconnected at the battery.
Any time the intake air duct or air cleaner is removed, the intake opening should be covered. This will protect
against accidental entrance of foreign material into the cylinder which could cause extensive damage when
the engine is started.
Cylinder Block
The cylinder block is made of cast iron. The crankshaft is supported by five bearings. The bearing cap is made of
nodular cast iron.
Cylinder Head
The cylinder head is made of aluminum alloy casting with a spark plug in the center.
Valve Train
Valve system is a single over head camshaft.
The valves clearance adjustment are hydraulic.
Hydraulic valve lifter adjustment, no adjustment necessary.
Intake Manifold
The intake manifold is made of aluminum alloy.
Exhaust Manifold
The exhaust manifold is made of high Si-Mo nodular iron.
Pistons and Connecting Rods
Aluminum pistons are used after selecting the grade that meets the cylinder bore diameter. Each piston has two
compression rings and one oil ring. The piston pin is made of cast hardened steel. The connecting rod bearings are
made of modular cast iron. The connecting rod bearings are made of steel backed with tri-metal babbitt metal.
Crankshaft and Bearings
The crank shaft is made of modular cast iron. Pins and journal are graded for correct size selection for their bearing.
Page 2426 of 4264
6A-6 ENGINE MECHANICAL (C24SE)
ENGINE PICTORIAL
Front View
“4WD OIL PAN”
Page 2427 of 4264
ENGINE MECHANICAL (C24SE) 6A-7
Inlet Side View
“4WD OIL PAN”
Page 2428 of 4264
6A-8 ENGINE MECHANICAL (C24SE)
Rear View
“4WD OIL PAN”
Page 2429 of 4264
ENGINE MECHANICAL (C24SE) 6A-9
Exhaust Side View
“4WD OIL PAN”
Page 2430 of 4264
6A-10 ENGINE MECHANICAL (C24SE)
Top View
Page 2431 of 4264

ENGINE MECHANICAL (C24SE) 6A-11
Main Data and Specifications
Engine - General C24SE
Engine type Four-cycle, water cooled cross-flow with single over head
camshaft
Micro-computer control, fuel injection
Combustion chamber type (Volume) Hemispherical (43.3cm3)
Timing train system Belt drive
No. of cylinders-bore stroke mm (in) 4-87.5100.0 (3.443.93)
Bore Spacing(C/L to C/L) 93.0 mm (3.66 in)
Firing Order 1-3-4-2
BoreStroke mm (in) 87.5100.0 (3.443.93)
Total piston displacement cm3 (in3) 2,405(146.80)
Combustion Chamber Volume 43.3cm3
No. of piston ring Compression ring: 2, Oil ring: 1
Compression pressure kg/cm2 (psi/pa) 12.2-16.3 (174-232/1200-1600)
Ignition timing (BTDC) No adjustment
Idling speed: rpm(WO/AC,W/AC) A/C off 825
Valve clearances (At cold)
Intake mm (in) 0 (0) (Hydraulic valve lash adjustment)
Exhaust mm (in) 0 (0) ( " )
Open at (BTDC) deg 1730’
Close at (ABDC) deg 7630’
Exhaust valves
Open at (BBDC) deg 5830’
Close at (ATDC) deg 3530’
Ignition system Fully transistorized battery ignition
Distributor type Not applicable, Electronic Spark Timing control
Distributor advance type Not applicable, Electronic Spark Timing control
Spark plug type RN9YC4
Spark plug gap mm (in) 1.0--1.1 (0.039--0.043)
Lubrication system
Lubricating method Fully flow pressure circulation
Special engine oil (API grade) SE, SF, SG or SH grade
Oil pressure kg/cm2 (psi/Pa) rpm 4-4.6 (56.9-65.4/400-450)
Oil pump type Gear
Oil filter type Cartridge full flow
Oil capacity lit. (US/UK gal.) 4.25
Cooling system
Radiator type Corrugated fin with reserve tank
Coolant capacity lit.
(US/UK gal.) 2.3 (0.66/0.55)
Water pump type Centrifugal
Thermostat Wax pellet with jiggle hole
Page 2432 of 4264

6A-12 ENGINE MECHANICAL (C24SE)
Engine - General C24SE
Fuel system Electronically controlled Multi Port Fuel Injection System
Fuel pump type Electric
Fuel pressure kg/cm2 (psi/Pa) 3.4 (48.4/334)
Fuel filter type Cartridge paper element
Air cleaner type Dry paper element
Battery Type/V-Ax No. of units 34B19L/50D20L
Alternator
Capacity V-A(W) 12-90 (1080), 12-100 (1200)
Starter
Output V-kW 1.4
Exhaust system CO Adjustment (1) Applicable to Open Loop System (Not equipped H2OS)
(2) Not applicable to Closed Loop System (Equipped H2OS)
Compression Ratio (with Tolerance) 9.6:10.25
Cylinder Head Material Aluminum Alloy (gravity cast)
Cylinder Block Material Cast Iron
No. of Mounting Points (including trans.) 3
Engine Installation Angles
-Longitudinal4 60'
-Lateral 7 50' (towards exhaust side)
Overall Dimensions (L
W
H):
- TF (2.4Litre/2WD) 610564708mm
- TF (2.4Litre/4WD) 610564746mm
Engine Weight
Engine Weight
- TF (2.4Liter/Man)140kg
Camshaft Type SOHC
No. of Valves per Cylinder
- Inlet1
- Exhaust 1
Spark Plug Location Side
Port Arrangement Cross Flow
Working Principle Spark Ignition 4-stroke