3.2.1.1. Specifications
Engine (general data)
| Designation |
SR
|
| Engine code: | |
| Injector engines with preliminary preparation of fuel mix (with a uniform nozzle) |
SR20Di
|
| Engines with direct injection of fuel: | |
| – Phase I models |
SR20DE
|
| – Phase II low-specification models |
SR20De
|
| – Phase II high-specification models |
SR20DE
|
| Working volume of cylinders |
1998 cm / cube
|
| Internal diameter of the cylinder |
86,00 mm
|
| Piston stroke |
86,0 mm
|
| Direction of rotation of the crankshaft |
Clockwise (if to look on the right side of the car)
|
| Finding of the 1st cylinder |
From a gas distribution mechanism drive chain
|
| Engine operating procedure |
1–3–4–2
|
| Extent of compression |
9,8:1
|
| Compression pressure in cylinders | |
| Nominal rate: | |
| – SR20Di and SR20De engines |
12,26 kgfs/cm/kV
|
| – SR20DE engines |
12,75 kgfs/cm/kV
|
| Maximum permissible pressure of a compression: | |
| – SR20Di and SR20De engines |
10,30 kgfs/cm/kV
|
| – SR20DE engines |
10,79 kgfs/cm/kV
|
| Maximum permissible distinction of a compression in cylinders (for all engines) |
1,0 kgfs/cm/kV
|
Cam-shaft and hydraulic regulators
| Drive |
From a chain
|
| Number of support of cam-shafts |
5
|
| Axial side play of cam-shafts: | |
| – standard |
0,055 – 0,139 mm
|
| – limit |
0,20 mm
|
Sizes of cams
Engine lubrication system
| Type of the oil pump |
Gear, with the drive from a crankshaft sock
|
| The minimum pressure of oil at a working temperature of the engine: | |
| – idling |
it is not lower than 0,78 kgfs/cm/kV
|
| – at 3000 rpm: | |
| • for SR20Di and SR20De engines |
4,0 kgfs/cm/kV
|
| • for SR20DE engines |
4,5 kgfs/cm/kV
|
| Gaps of the oil pump: | |
| – a gap between the conducted gear wheel and a pump housing |
0,11 – 0,20 mm
|
| – a gap in gearing of teeths of the leader and conducted gear wheels |
no more than 0,18 mm
|
| – an axial side play of the conducted gear wheel |
0,05 – 0,11 mm
|
| – axial side play of the leading gear wheel |
0,05 – 0,09 mm
|
| – a gap between a fillet of the leading gear wheel and a cover of the oil pump |
0,045 – 0,091 mm
|
The inhaling moments (in N. of m)
| Nuts of fastening of a cover of a head of the block of cylinders |
10
|
| Bolt of fastening of a pulley of the crankshaft |
147
|
| Bolt of fastening of a cover of the chain drive of the gas-distributing mechanism |
7
|
| Nuts of fastening of a natyazhitel of a chain |
8
|
| Bolts of fastening of the leading asterisk of the crankshaft |
147
|
| Bolts of fastening of an uspokoitel of a chain |
16
|
| Bolt of an axis of a boot of a natyazhitel of a chain |
16
|
| Bolts of covers of basic necks of a cam-shaft: | |
| Bolts of fastening of a cover of a back neck of a cam-shaft of final valves |
22
|
| Bolts of other covers |
11
|
| Bolts of fastening of a head of the block of cylinders | |
| Main bolts: | |
| – 1st stage of an inhaling |
39
|
| – 2nd stage of an inhaling |
78
|
| To completely weaken bolts and again to tighten with the next moment: | |
| – 3rd stage of an inhaling |
39 ± 5
|
| – 4th stage of an inhaling |
to tighten on a corner 90 – 100 °
|
| – 5th stage of an inhaling |
to tighten on a corner 90 – 100 °
|
| M6 bolts |
7
|
| Nuts and bolts of sections of oil pallets: | |
| Cast section from aluminum alloy: | |
| – with numbers 1 – 16, an inhaling in the established sequence |
18
|
| – with numbers 17 and 18, an inhaling in the established sequence |
7
|
| Steel stamped section |
7
|
| Drain stopper of the oil pallet |
35
|
| Bolts of the central longeron of a suspension bracket of the power unit |
88
|
| Oil pump: | |
| – pump cover screws |
5
|
| – pump cover bolt |
5
|
| – bolt of the reducing valve |
60
|
| – bolt of the perepuskny valve |
65
|
| Central bolt of the oil cooler |
39
|
| Bolts of fastening of a flywheel (drive plate of the hydrotransformer) |
88
|
| Bolts of the holder of a back epiploon |
8
|
| Nuts of fastening of conrod covers: | |
| – 1st stage of an inhaling |
15
|
| – the 2nd stage of an inhaling (at an inhaling a key with an angular scale) |
to tighten on a corner 60 – 65 °
|
| – the 2nd stage of an inhaling (at an inhaling a dynamometer key without angular scale) |
40
|
| Bolts of covers of radical bearings |
50
|
| – 1st stage of an inhaling |
35
|
| – the 2nd stage of an inhaling (at an inhaling a key with an angular scale) |
to tighten on a corner 45 – 50 °
|
| – the 2nd stage of an inhaling (at an inhaling a dynamometer key without angular scale) |
78
|
| Bolts of fastening of the engine to the check point: | |
| – bolts with a length less than 45 mm |
19
|
| – bolts with a length more than 55 mm |
75
|
| Fastening of details of the right suspension bracket of the power unit: | |
| – bolts of fastening of an arm of a support to the engine |
49
|
| – bolts of fastening of a support to an engine arm |
55
|
| – coupling bolt of a support |
49
|
| Fastening of details of the left suspension bracket of the power unit: | |
| – coupling bolt of a support |
49
|
| – bolts of fastening of a support of the power unit to the check point |
49
|
| Bolts of fastening of details of a forward suspension bracket of the power unit: | |
| – bolts of fastening of an arm of a support to the engine |
49
|
| – fastening of a support to the central longeron (on cars the versatile person) |
55
|
| – coupling bolt of a support |
70
|
| Bolts of fastening of details of a back suspension bracket of the power unit: | |
| – bolts of fastening of a back support to the central longeron |
55
|
| – coupling bolt of a support |
79
|
| – bolts of fastening of an arm of a support |
69
|