Standard values and wear limits
Engine assembly
| Parameter | Terms and Conditions | Standard or new | Limit | |
| Compression pressure | Checking the pressure at 250 rpm (min⁻¹) with the throttle valve wide open (for compression ratio, see. v "Technical specifications"). | minimum | 930 kPa (9.5 kgf/cm²) | - |
| maximum deviation | 200 kPa (2.0 kgf/cm²) | - |
Cylinder head
| Parameter | Terms and Conditions | Standard or new | Limit | |
| Cylinder head | Warping | - | 0.05 mm | |
| Height | 103.95-104.05 mm | - | ||
| Camshaft | Axial play | 0.05-0.20 mm | 0.4 mm | |
| Oil clearance between camshaft and bracket | neck #1 | 0.030-0.069 mm | 0.15 mm | |
| necks #2, 3, 4, 5 | 0.060-0.099 mm | 0.15 mm | ||
| Beating | 0.03 mm max. | 0.04 mm | ||
| Cam height | intake, primary | 33.925 mm | - | |
| intake, secondary | 29,638 mm | - | ||
| release | 34,092 mm | - | ||
| Valve | Valve clearance(in a cold state) | inlet | 0.21-0.25 mm | - |
| release | 0.28-0.32 mm | - | ||
| Valve stem outer diameter | inlet | 5.475-5.485 mm | 5,445 mm | |
| release | 5,450-5,460 mm | 5.42mm | ||
| Clearance between the piston rod and the guide bushing | inlet | 0.030-0.055 mm | 0.08 mm | |
| release | 0.055-0.080 mm | 0.11 mm | ||
| Valve seat | Width | inlet | 1.25-1.55 mm | 2.00 mm |
| release | 1.25-1.55 mm | 2.00 mm | ||
| Height of the rod after installation | inlet | 40.8-41.0 mm | - | |
| release | 54.6-54.8 mm | - | ||
| Valve spring | Length in unloaded state | inlet | 47.61 mm | - |
| release | 49.64 mm 49.63 mm | - | ||
| Valve guide bushing | Inner diameter | inlet | 5.515-5.530 mm | 5.55 mm |
| release | 5.515-5.530 mm | 5.55 mm | ||
| Height after installation | inlet | 15.2-16.2 mm | - | |
| release | 15.5-16.5 mm | - | ||
| Rocker arm | Clearance between rocker arm and axle | inlet | 0.025-0.052 mm | 0.08 mm |
| release | 0.018-0.056 mm | 0.08 mm |
Cylinder block
| Parameter | Terms and Conditions | Standard or new | Limit | |
| Cylinder block | Surface warping | max 0.07 mm | 0.10 mm | |
| Cylinder diameter (engines K20A4, K20A5) | A or i | 86,010-86,020 mm | 86.070 mm | |
| B or II | 86,000-86,010 mm | 86,070 mm | ||
| Cylinder diameter (engine K24A1) | A or 1 | 87,010-87,020 mm | 87,070 mm | |
| B or II | 87,000-87,010 mm | 87,070 mm | ||
| Taper | - | 0.05 mm | ||
| Boring tolerance | - | 0.25 mm | ||
| Piston | Outside diameter 11mm from the bottom of the skirt (engines K20A4, K20A5) | without a letter or letter A | 85,980-85,990 mm | 85,930 mm |
| letter B | 85,970-85,980 mm | 85,920 mm | ||
| Outside diameter 11mm from the bottom of the skirt (engine K24A1) | without a letter or letter A | 86,980-86,990 mm | 86,930 mm | |
| letter B | 86,970-86,980 mm | 86,920 mm | ||
| Clearance between piston and cylinder wall | 0.020-0.040 mm | 0.05 mm | ||
| Groove height (under the ring) | upper compression (engines K20A4, K20A5) | 1,220-1,230 mm | 1.25 mm | |
| upper compression (engine K24A1) | 1,230-1,240 mm | 1.26 mm | ||
| second compression (engines K20A4, K20A5) | 1,220-1,230 mm | 1.25 mm | ||
| second compression (engine K24A1) | 1,240-1,250 mm | 1,270 mm | ||
| oil scraper (engines K20A4, K20A5) | 2.005-2.025 mm | 2.05 mm | ||
| oil scraper (engine K24A1) | 2.805-2.825 mm | 2.85 mm | ||
| Piston ring | Groove gap | upper compression (engine K20A4) | 0.035-0.060 mm | 0.13 mm |
| upper compression (engine K20A5) | 0.030-0.055 mm | 0.13mm | ||
| upper compression (engine K24A1) | 0.045-0.070 mm | 0.13 mm | ||
| second compression (engines K20A4, K20A5) | 0.030-0.055 mm | 0.13mm | ||
| second compression (engine K24A1) | 0.050-0.075 mm | 0.13 mm | ||
| Gap in the lock | upper compression | 0.20-0.35 mm | 0.60 mm | |
| second compression | 0.40-0.55 mm | 0.70 mm | ||
| oil scraper (engine K20A4 [except KY models]) | 0.25-0.65 mm | 0.75 mm | ||
| oil scraper (engines K20A4 [model KU], K20A5, K24A1) | 0.20-0.70 mm | 0.80 mm | ||
| Piston pin | Outer diameter | 21,961-21,965 mm | 21,953 mm | |
| Clearance between piston and pin | -0.005-+0.002 mm | 0.005 mm | ||
| Connecting rod | Preference between connecting rod and piston pin | 0.005-0.015 mm | 0.02 mm | |
| Small head inner diameter | 21,970-21,976 mm | - | ||
| Large head internal diameter (nominal) | engines K20A4, K20A5 | 48.0 mm | - | |
| engine K24A1 | 51.0 mm | - | ||
| Axial clearance after installation on the crankshaft | 0.15-0.30 mm | 0.40 mm | ||
| Crankshaft | Main journal diameter | necks No. 1,2,4,5 | 54.984-55.008 mm | - |
| neck #3 | 54,976-55,000 mm | - | ||
| Diameter of connecting rod journals | engines K20A4, K20A5 | 44,976-45,000 mm | - | |
| engine K24A1 | 47,976-48,000 mm | - | ||
| Taper of connecting rod/main journals | max 0.005 mm | 0.010 mm | ||
| Ovality of connecting rod/main journals | max 0.005 mm | 0.010 mm | ||
| Axial play | 0.10-0.35 mm | 0.45 mm | ||
| Beating | max 0.03 mm | 0.04 mm | ||
| Crankshaft bearings | Oil clearance between main bearing and journal | necks No. 1,2,4,5 | 0.017-0.041 mm | 0.050 mm |
| neck N® 3 | 0.025-0.049 mm | 0.055 mm | ||
| Clearance between connecting rod bearing and journal | 0.021-0.049 mm | 0.060 mm |
Material obtained from the website www.hondabook.ru