10
Valve Spring
Free length (mm) 49.5+/-0.5
Spring rate@30-70%of finest Load (N/mm) 23.88
Valve Tappets (Cam Follower)
Diameter (mm) 12
Running Clearance (mm) 0.016 to 0.045
Valve Push Rods
No of Push Rods 2
Diameter (mm) 10
Length (mm) 289.5+/-0.50
Valve Timing
Inlet opens (deg. BTDC) 9 ± 3
Inlet closes (deg. ABDC) 48 ± 3
Exhaust opens (deg. BBDC) 52 ± 3
Exhaust closes (deg. ATDC) 25 ± 3
CONNECTING RODS, PISTONS AND CYLINDER SLEEVES
Connecting Rod
Material EN18 D
Connecting Rod Big End Bearing
Material Steel back,'p' copper lead.
Connecting Rod Small End Bearing
Type Bush
Material Steel back, 'Y' copper lead.
Small end bush diameter (mm) 30 +0.02/+0.033
Pistion Rings
Number of Rings per Piston 3
Top Ring Material Half Key stone, crome plated
Middle Ring Material Bevelled
Bottom Ring Material (Oil Ring) Chromepelated conformable Oil ring.
Ring Width (Axial)
Top (mm) 2.563
Middle (mm) 2
Bottom (mm) 3
Engine Specifications
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