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
