Contents: Engines V3, V5, V6 ⇓ Engine B6 EGI ⇓
Engines V3, V5, V6
The engine uses a valve timing mechanism with an overhead camshaft, the drive of which is carried out by a toothed belt from a toothed pulley installed on the crankshaft. The belt tension is provided by a mechanical tensioner.
Camshaft
The camshaft is a three-bearing shaft. The shaft is fixed from axial movement by a thrust flange made on the front journal of the shaft.
Valve timing
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Camshaft characteristics
Neck diameter, mm:
- front: 43.44-43.465;
- average: 43.41-43.435;
- rear: 43.44-43.465.
Neck ovality, no more than, mm: 0.05.
Neck straightness, no more than, mm: 0.03.
Axial clearance of camshaft, mm:
- nominal: 0.05-0.18;
- maximum allowed: 0.20.
Clearance between camshaft journals and bearing holes, mm:
- front bearing: 0.035-0.085;
- average bearing: 0.065-0.115;
- rear bearing: 0.035-0.085.
Height of camshaft lobes, mm:
engines B3 and B5:
- intake: 36.378-36.528 (36.23)*;
- graduation: 36,378-36,528 (36,23);
engine B6:
- intake: 36.811-36.911 (36.66);
- graduation: 36.811-36.911 (36.66).
* The minimum permissible height is indicated in brackets (when worn out).
Engine B6 EGI
The engine uses a valve timing mechanism with an overhead inlet and outlet camshaft, the drive of which is carried out by a toothed belt from a toothed pulley mounted on the crankshaft. The belt tension is provided by a mechanical tensioner.
Camshafts
The camshafts are five-bearing. The shafts are fixed from axial movement by thrust flanges made on the front journals of the shafts.
Valve timing
Start of opening of the intake valve before TDC of the exhaust stroke with an advance of: 5°.
Closing of the intake valve after BDC of the compression stroke with a delay of 51°.
Start of opening of the exhaust valve before BDC of the working stroke with advance: 69°.
Closing of the exhaust valve after TDC of the exhaust stroke with a delay of 1°.
Characteristics of camshafts
Neck diameter, mm: 25.940-25.965.
Neck ovality, no more than, mm: 0.05.
Neck straightness, no more than, mm: 0.03.
Clearance between camshaft journals and bearing holes, mm:
- nominal: 0.035-0.081;
- maximum allowable: 0.15.
Axial clearance of camshafts, mm:
- nominal: 0.07-0.19;
- maximum allowable: 0.2.
Height of cams, mm:
- intake: 40.888(40.688)*;
- graduation: 40,889 (40,689).
* The minimum permissible height during wear is indicated in brackets.
Camshaft drive belt
Belt brand: Unitta.