Engine Mechanical: Specifications Infiniti QX56 II

Parts Requiring Angle Tightening

1. Use angle wrench [SST: KV10112100 (BT8653-A)] for the final tightening of the following engine parts: Cylinder head bolts Main bearing cap bolts Main bearing cap sub bolts Connecting rod cap bolts Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angle tightening)
2. Ensure thread and seat surfaces are clean and coated with engine oil.

Scheme 1

1. After removing mounting nuts and bolts, separate the mating surface using the seal cutter [SST:KV10111100 (J-37228)] (A) and remove old liquid gasket sealing. CAUTION: Be careful not to damage the mating surfaces.
2. Tap the seal cutter to insert it (B), and then slide it (C) by tapping on the side as shown in the figure.
3. In areas where the seal cutter is difficult to use, lightly tap the parts using a plastic hammer to remove it. CAUTION: If for some unavoidable reason a tool such as a screwdriver is used, be careful not to damage the mating surfaces.

Scheme 2

Scheme 3

Scheme 4

1. Using a scraper (A), remove old liquid gasket adhering to the liquid gasket application surface and the mating surface. Remove liquid gasket completely from the groove of the liquid gasket application surface, mounting bolts and bolt holes.
2. Wipe the liquid gasket application surface and the mating surface with white gasoline (lighting and heating use) to remove adhering moisture, grease and foreign materials.
3. Attach liquid gasket tube to the tube presser (commercial service tool). Use Genuine RTV Silicone Sealant or equivalent. Refer to " «RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS»(ref-390324-S25060709252011032600000) ".
4. Apply liquid gasket without gaps to the specified location according to the specified dimensions. If there is a groove for liquid gasket application, apply liquid gasket to the groove. As for bolt holes (B), normally apply liquid gasket inside the holes. Occasionally, it should be applied outside the holes. Check to read the text of this information. Within 5 minutes of liquid gasket application, install the mating component. If liquid gasket protrudes, wipe it off immediately. Do not retighten mounting bolts or nuts after the installation. After 30 minutes or more have passed from the installation, fill engine oil and engine coolant. CAUTION: If there are specific instructions in this information, observe them.

Scheme 5

1. In this information, each bank name is defined as per the following
2. For cylinder numbers and bank layout, refer to the figure. Bank 1 : The bank side including cylinder No. 1 (odd-numbered cylinder side) Bank 2 : The other bank side of the above (even-numbered cylinder side)

GENERAL SPECIFICATIONS

GENERAL SPECIFICATIONS Cylinder arrangement V-8 Displacement cm 3 (cu in) 5,552 (338.80) Bore and stroke mm (in) 98.0 x 92.0 (3.86 x 3.62) Valve arrangement DOHC Firing order 1-8-7-3-6-5-4-2 Number of piston rings Compression 2 Oil 1 Number of main bearings 5 Compression ratio 10.8 Compression pressure kPa (kg/cm 2 , psi)/200 rpm Standard 1,667 (17, 242) Minimum 1,226 (12.5, 178) Differential limit between cylinders 98 (1.0, 14) Cylinder number Unit: degree Valve timing Intake valve open (BTDC) (-61) - (+ 58) Intake valve close (ABDC) (-76) - (+ 69) Exhaust valve open (BBDC) 56 Exhaust valve close (ATDC) 8

Scheme 6

See also:
• WORK PROCEDURE