FORD SCORPIO

1985-1994 of release

Repair and car operation

3.2.1. A technical characteristics

THE GENERAL DATA

The engine – petrol, four-cycle, four-cylinder, рядный, water cooling, has two camshafts in a head of the block of cylinders, is established is longitudinal ahead of the car.

THE ENGINE

Key parametres

The engine	2,0 DОНС	2,0 DОНС	2,0 DОНС	2,0 DОНС
Engine type	N8B	N8D	N9B	N9D
Diameter of the cylinder, (mm)	86,00	86,00	86,00	86,00
Piston stroke, (mm)	86,00	86,00	86,00	86,00
Volume, (sm3)	1998	1998	1998	1998
Compression degree	10,3	10,3	10,3	10,3
Pressure of compression, (МПа)	1,1 – 1,3	1,1 – 1,3	1,1 – 1,3	1,1 – 1,3
Rated power:
– Kw at rpm	77 at 5600	80 at 5600	92 at 5500	88 at 5500
– H.p. at rpm	105 at 5600	109 at 5600	125 at 5500	120 at 5500
The maximum twisting moment, (Nanometer at rpm)	168 at 3000	174 at 3000	168 at 3000	171 at 2500

HEAD OF THE BLOCK OF CYLINDERS

The head is executed from a special aluminium alloy and has steel plug-in saddles of valves.

Regrinding of the bottom plane of a head of the block of cylinders is not provided.

Designation	20
Diameters of apertures of nests of bearings of a camshaft	26,000 – 26,030 mm

Lining of a head of the block of cylinders

Mark: Reinz.

Directing valves

Directing valves are executed from pig-iron and запрессованы in a head of the block of cylinders at an angle 20 .

Nominal diameter: 7,063–7,094 mm.

The valve

The valve are established in a head of the block of cylinders and are inclined at an angle 20 to an axis of the cylinder and are put in action from cams of camshafts through hydraulic pushers. The rabosy backlash of valves is regulated automatically.

The sizes of valves

The valve inlet:
– Length of the valve	108,24 – 108,70 mm
– Diameter of a plate	42,50 – 42,70 mm
– Diameter of a core:
• the nominal	7,025 – 7,043 mm
• the repair size +0,2	7,225 – 7,243 mm
• the repair size +0,4	7,425 – 7,443 mm
• the repair size +0,6	7,625 – 7,643 mm
• the repair size +0,8	7,825 – 7,843 mm
– A core backlash in the directing	0,020 – 0,069 mm
– A corner of a working facet	90
The valve final:
Length of the valve	108,71 – 109,17 mm
– Diameter of a plate	37,90 – 38,10 mm
– Diameter of a core
• the nominal	6,999 – 7,017 mm
• the repair size +0,2	7,199 – 7,217мм
• the repair size +0,4	7,399 – 7,417 mm
• the repair size +0,6	7,599 – 7,617 mm
• the repair size +0,8	7,799 – 7,817 mm
– A core backlash in the directing	0,046 – 0,095 mm
– A corner of a working facet	90

Springs of valves

Are applied on two springs on the valve.

Springs of inlet valves:
– Diameter of a spring	24,00 mm
– Diameter of a wire of a spring	4,5 mm
– Number of coils	6,1
– Free length	46,80 mm
Springs of final valves:
– Diameter of a spring	17,5 mm
– Diameter of a wire of a spring	2,5 mm
– Number of coils	8,0
– Free length	48,20 mm

THE BLOCK OF CYLINDERS OF THE ENGINE

The block of cylinders of the engine is cast from pig-iron. Cylinders are executed directly in the block of cylinders.

Designation	20
Width of the basic bearing	27,17 – 27,22 mm
Internal diameters of radical bearings (it is measured on a vertical):
– The nominal	55,001 – 55,038 mm
– The repair size-0,05	54,951 – 54,988 mm
– The repair size-0,25	54,751 – 54,788 mm
– The repair size-0,50	54,501 – 54,538 mm
– The repair size-0,75	54,251 – 54,288 mm
Diameters of apertures of nests of radical bearings in the block of cylinders:
– The nominal size	59,287 – 59,300 mm
– The repair size +0,4	59,687 – 59,700 mm
Diameters of cylinders:
– Diameters the nominal standard:
• group 1	86,000 – 86,100 mm
• group 2	86,100 – 86,200 mm
– 1 repair size +0,15:
• group And	86,150 – 86,160 mm
• group In	86,160 – 86,170 mm
– 2 repair size +0,50	86,500 – 86,510 mm

KRIVOSHIPNO-SHATUNNYJ THE MECHANISM

Cranked shaft

The steel cranked shaft leans against five bearings.

Axial люфт	0,09 – 0,30 mm
Diameters of radical necks:
– The nominal size (a yellow label)	54,980 – 54,990 mm
– The nominal size (a red label)	54,990 – 55,000 mm
– The repair size-0,25 (a green label)	54,730 – 54,750 mm
Backlash in radical bearings	0,011 – 0,048 mm
The prevention Measurement to spend by means of measuring cores Plastigage.
Diameters шатунных necks:
– The nominal size	50, 890 – 50,910 mm
– The repair size-0,25 (a green label)	50,640 – 50,660 mm
Thickness of persistent half rings:
– The nominal size	2,301 – 2,351 mm
– The repair size	2,491 – 2,541 mm

Flywheel

The flywheel is fixed on a flange of a cranked shaft by six bolts located on different distance one from another.

Rods

Rods are shaped from a steel and in section have двутавровый a profile. In the bottom part of a rod there is a spray of oil for greasing and cooling of pistons. A piston finger запрессован in a rod head.

Diameter of an aperture of a head of a rod	20,589 – 20,609 mm
Finger tightness in a rod head	0,018 – 0,039 mm
Temperature of heating of a head of a rod in the course of finger installation	250 – 300 WITH
Diameter of an aperture of the basis of a rod	53,890 – 53,910 mm
Internal diameters of apertures шатунных loose leaves:
– The nominal size	55,001 – 55,038 mm
– The repair size-0,05	54,951 – 54,988 mm
– The repair size-0,25	54,751 – 54,788 mm
– The repair size-0,50	54,501 – 54,538 mm
– The repair size-0,75	54,251 – 54,288 mm
Backlash in шатунных bearings	0,006 – 0,060 mm
The prevention Measurement to spend by means of measuring cores Plastigage.
Admissible неперпендикулярность axes of apertures concerning a rod axis:
– A head aperture	0,10 mm
– A basis aperture	0,15 mm

Pistons

Pistons are made of an easy alloy, without flutes on a spending part, with filled in инварным a ring limiting thermal changes of the sizes. In the top part there are three flutes for piston rings. The axis of an aperture of a piston finger is displaced concerning a piston axis. Pistons are delivered in complete sets together with fingers and rods.

Installation method: the arrow at the bottom of the piston should be directed towards a forward part of the engine (towards a system drive timing).

The sizes of pistons

The engine	2,0 дм3
Diameters the nominal standard:
– Group 1	85,970 – 85,980 mm
– Group 2	85,980 – 85,990 mm
Diameters of the repair sizes:
– The standard	85,980 – 86,000 mm
– With the admission 0,15	86,130 – 86,150 mm
– With the admission 0,50	86,470 – 86,490 mm
Backlash of new pistons in cylinders	0,020 – 0,040 mm

Piston fingers

Fingers, are made of a steel, and subjected thermal processing, запрессованы in heads of rods (hot installation at temperature of a head 250–300 ) and are turned in piston naves.

Length	63,40 mm
Diameter:
– A designation white colour	20,622 – 20,625 mm
– A designation red colour	20,625 – 20,628 mm
– A designation blue colour	20,628 – 20,631 mm
– A designation yellow colour	20,631 – 20,634 mm
Backlash in piston naves	0,008 – 0,014 mm
Tightness in a rod head	0,018 – 0,039 mm

Piston rings

Each piston has three rings: two sealing (top square section, an average of conic section) and one маслосъемное.

Backlash of the lock of sealing rings (established in the cylinder):
– The top	0,30 – 0,60 mm
– An average	0,50 – 0,80 mm
Lock backlash маслосъемного rings	0,40 – 1,50 mm
Arrangement of locks of rings:
– The sealing	On 150 (in opposite sides) concerning the lock маслосъемного rings
– маслосъемного	The lock of a holding apart spring is established according to a direction of an arrow at the bottom of the piston locks of the top and bottom plates are established on 25 mm to the right and to the left from an arrow direction

SYSTEM GAZORASPREDELENIJA

Camshafts are located in a head of the block of cylinders, actuate the valve directly through pushers and are put in action by a single-row chain.

Distribution phases

The engine	N8B	N9B
OZD	13 before ВМТ	13 before ВМТ
ZZD	39 after НМТ	51 after НМТ
OZW	43 before НМТ	43 before НМТ
ZZW	13 after ВМТ	13 after ВМТ

OZD and ZZD – accordingly opening and closing of the inlet valve.
OZW and ZZW – accordingly opening and closing of the final valve.
ВМТ and НМТ – accordingly the top and bottom dead points.

Privodnaja chain

Privodnaja chain – single-row, roller in the size 3/8 inches.

The chain tension is made hydraulic натяжителем.

Camshafts

Camshafts rotates in five bearings.

Diameters of bearings of camshafts	25,960 – 25,980 mm
Axial люфт a camshaft	0,020 – 0,260 mm
Lifting of cams:
– Inlet, engine N8B	10,5 mm
– Inlet, engine N9B	11,1 mm
– The final	10,9 mm

GREASING SYSTEM

Greasing under pressure provides шестеренчатый the oil pump with a drive a chain from a cranked shaft in which case is перепускной the valve.

The minimum pressure of oil (at temperature 80 ):
– At 750 rpm	0,16 МПа
– At 2000 rpm	0,37 – 0,46 МПа
Pressure of opening перепускного the valve (at 1000 rpm)	0,37 – 0,46 МПа
Pressure of fire of a control bulb of pressure of oil	0,03 – 0,06