3.3.22 Installing piston rings

Earbuds

No adjustment operations should be performed on the liners. If there are scuffs, marks or peeling, replace the liners with new ones.

The gap between the liners and the crankshaft journals is checked by calculation (by measuring the parts). It is convenient to use a calibrated plastic wire to check the gap. In this case, the verification method is as follows:

• thoroughly clean the working surfaces of the liners and the corresponding neck and place a piece of plastic wire on its surface;
• Install a connecting rod with a cap or a main bearing cap on the journal (depending on the type of journal being tested) and tighten the fastening nuts or bolts. Tighten the connecting rod bolt nuts to a torque of 51 Nm (5.2 kgf m), and the main bearing cap bolts to a torque of 80.4 Nm (8.2 kgf m);
• remove the cover and use the scale on the package to determine the size of the gap by flattening the wire (Fig. 2-38).

The nominal design clearance is 0.02-0.07 mm for connecting rods and 0.026-0.073 mm for main journals. If the gap is less than the limit (0.1 mm for connecting rods and 0.15 mm for main journals), then these liners can be used again.

If the gap is greater than the limit, replace the liners on these necks with new ones.

If the crankshaft journals are worn and ground to repair size, then replace the bearings with repair bearings (of increased thickness).

Thrust half rings

Just like on the liners, no adjustment operations can be performed on the half rings. If there are burrs, marks or peeling, replace the half rings with new ones.

Half rings are also replaced if the axial clearance of the crankshaft exceeds the maximum permissible - 0.35 mm. Select new half rings with a nominal thickness or increased by 0.127 mm to obtain an axial clearance in the range of 0.06-0.26 mm.

The axial clearance of the crankshaft is checked using an indicator, as described in the chapter “Engine Assembly” (Fig. 2-14).

The crankshaft axial clearance can also be checked with the engine installed in the vehicle. In this case, the axial movement of the crankshaft is created by pressing and releasing the clutch pedal, and the amount of clearance is determined by the movement of the front end of the crankshaft.

Marking of pistons VAZ 21213

Cars admin26.02.2020

Reg.: 12.12.2008 Threads / Messages: 2 / 4250 From: Omsk Age: 48 Car: VAZ-1118, 2008

Reg.: 04/22/2008 Threads / Messages: 1 / 1371 From: Ukraine, Melitopol Age: 33 Car: 21312 1997, 1.8K

Reg.: 12.12.2008 Threads / Messages: 2 / 4250 From: Omsk Age: 48 Car: VAZ-1118, 2008

Reg.: 04/15/2010 Messages: 2 From: Voronezh Age: 40 Car: VAZ-21213&96g.

gmv wrote: which is better? 1.Avtramat Kharkov 2.Motordetal 3.United Motors

Questions about point 1 have never arisen in 8 years, so we only use them.

Reg.: 05/14/2009 Messages: 116 From: Kostroma Age: 64 Car: VAZ 2131 1999 1.7 cc.

Reg.: 07/28/2008 Messages: 123 From: Samara Age: 42 Car: 2121 1982.

capital engine, there is a set of Kharkov pistons from 2105 (with recesses for the valves) - has anyone tried installing it on the 2106 engine? A master friend says that you can install it and then calmly fill it with gasoline from 76 to 92 - who can say from experience whether this is true or not? And what are the consequences? The gap at TDC to the mating plane of the head is really about two millimeters.

I got bored and bought a Niva.

Reg.: 12.12.2008 Threads / Messages: 2 / 4250 From: Omsk Age: 48 Car: VAZ-1118, 2008

Reg.: 07/28/2008 Messages: 123 From: Samara Age: 42 Car: 2121 1982.

I got bored and bought a Niva.

Reg.: 02/04/2009 Messages: 225 From: planet Norilsk. Age: 38 Car: 21213 95

I scrubbed the pistons a little to look at the markings and estimate the prices. The markings are made in a column: 1.) G - I still don’t understand what it is, either G Russian, or a triangle that is not completed on all the pistons, in the store they shrug their shoulders. 2.) -> the arrow shows how the piston is installed, directed towards the KV pulley. 3.) D- piston class (D – 81.995–82.005). 4.)2 - finger class (2 – 21.982–21.986).

Since only my 4th cylinder is moping, the finger dangles (knocks) a lot. Compression was normal (10.5-11) everywhere, the pistons in the block felt like they moved 1 mm from side to side, maximum 2 mm. Although it doesn’t seem like it should or feels like that. Hone marks are visible on the cylinder walls. You can take class D pistons with new rings and new pins and put it all back together. Or put it in class E so that it doesn’t dangle from side to side. Buy class E pistons and drag a block to sharpen it for these pistons. Here https://www.autoprospect.ru it says: Spare parts include pistons of classes A, C and E (nominal and repair sizes). Where did I get D?? And if the steel-bronze bushing in the connecting rod is broken, then you need to take all four connecting rods. since they should all be the same in mass, or one but with the same markings as the others?? Please tell me.

Reg.: 10/09/2007 Messages: 993 From: St. Petersburg Age: 51 Car: VAZ 21218 1999 VAZ 2121 2.0 FIAT

Reg.: 02/04/2009 Messages: 225 From: planet Norilsk. Age: 38 Car: 21213 95

Reg.: 12/06/2004 Threads / Messages: 4031 / 23190 From: Moscow Age: 65 Car: 21214M, 2013

Alexey aka ALER.

Reg.: 03/30/2010 Messages: 14 From: Orel Age: 47 Car: 2121 1981

Reg.: 10/09/2007 Messages: 993 From: St. Petersburg Age: 51 Car: VAZ 21218 1999 VAZ 2121 2.0 FIAT

Reg.: 03/30/2010 Messages: 14 From: Orel Age: 47 Car: 2121 1981

2.8.1. Device Features

Main dimensions of the connecting rod and piston group

Piston and connecting rod markings

Places where it is allowed to remove metal when adjusting the mass of the upper and lower connecting rod heads

The piston is cast aluminum. During manufacturing, the weight of the pistons is strictly maintained. Therefore, when assembling the engine, it is not necessary to select pistons of the same weight group.

According to the outer diameter, the pistons are divided into five classes (A, B, C, D, E) every 0.01 mm. The outer surface of the piston has a complex shape. It is conical in height and oval in cross section. Therefore, it is necessary to measure the piston diameter only in a plane perpendicular to the piston pin, at a distance of 55 mm from the piston bottom.

Product added to bookmarks!

• Description
• Reviews

Standard crankshaft from the VAZ 2130 1.8L engine (OPP VAZ).

A crankshaft with a stroke of 84 mm (cast iron) is installed in the VAZ 21213 (Niva) and VAZ 2123 (Niva-Chevrolet, CHEVROLET NIVA) block together with

TDMK pistons (82.0 mm - 82.4 mm - 82.8 mm - 84.0 mm), with standard or lightweight connecting rods.

This crankshaft can be installed in the block of a VAZ 2103 (1.5L) and VAZ 2106 (1.6L) without replacing connecting rods and pistons (an accurate calculation of the compression ratio and adjustment of the combustion chamber will be required).

You can increase the engine displacement by: replacing the crankshaft with another one with a larger stroke, increasing the cylinder diameter, or both at the same time. We must not forget that when changing engine volume, it is necessary to increase the volume of the combustion chamber - to compensate for the increase in cylinder volume.

When installing a crankshaft with a long stroke, it is necessary to replace the pistons.

Boring the block cylinders by a significant amount (2 mm) must be approached with caution. For example, when a serial VAZ 21083 block is bored from 82 mm to 84 mm, the engine experiences increased oil consumption. This occurs due to the loss of block rigidity. In this case, it is better to use a special thick-walled block casting. VAZ produces such blocks in small batches.

An increase in engine displacement leads to an increase in maximum torque , but at the same time there is a decrease in maximum power speed. This is due to a decrease in mechanical efficiency. If the increase in volume occurs due to an increase in the diameter of the cylinders, then the contact area between the cylinder walls and the piston with piston rings increases. As a result, friction increases. If the increase in volume occurs due to an increase in the crankshaft stroke, then the average piston speed increases, which leads to the same results.

In any case, an increase in volume leads to a drop in the overall efficiency of the engine.

VAZ engine volume (in cubic cm) depending on the cylinder diameter and piston stroke.

Diameter Stroke, mm cylinder, 80 84 86 88 mm 76.0 1451 1524 1560 1596 76.4 1466 1540 1576 1613 76.8 1476 1556 1593 1630 79.0 1568 1646 1685 17 25 79.4 1584 1663 1702 1742 79.8 1600 1680 1720 1760 80.0 1608 1688 1628 1768 82.0 1689 1774 1816 1858 82.4 1706 1791 1834 1876 82.8 1722 1808 1851 1894 84, 0 1772 1861 1905 1950

ENGINE VAZ 21213-1000260

The engine is four-stroke, carburetor, in-line, with an overhead camshaft. The engine cooling system is liquid, closed type, with forced circulation of liquid. The engine has a combined lubrication system: pressure and splash.