3.9
ENGINE
3
800 EFI Engine Service Specifications
Cylinder Head - Engine Specifications
Main Component: Cylinder Head EH076OLE021
Camshaft
Cam Lobe Height - Intake / Exhaust 1.3334" (33.8674 mm)
Camshaft Journal Outer Diameter - Mag 1.654" ± 0.00039" (42 ± 0.010 mm)
Camshaft Journal Outer Diameter - Center 1.634"± 0.00039" (41.50 ± 0.010 mm)
Camshaft Journal Outer Diameter - PTO 1.614" ± 0.00039" (41 ± 0.010 mm)
Camshaft Journal Bore Inner Diameter - Mag 1.656" ± 0.00039" (42.07 ± 0.010 mm)
Camshaft Journal Bore Inner Diameter - Center 1.637" ± 0.00039" (41.58 ± 0.010 mm)
Camshaft Journal Bore Inner Diameter - PTO 1.617" ± 0.00039" (41.07 ± 0.010 mm)
Camshaft Oil Clearance 0.00276" ± 0.00079" (0.07 ± 0.02 mm)
Camshaft End Play 0.0167" ± 0.0098" (0.425 ± 0.25 mm)
Counter Balance Counter Balance End Play 0.005" (0.127 mm)
Cylinder Head
Cylinder Head - Surface warp limit 0.00394" (0.1 mm)
Cylinder Head - Standard height 3.478" (88.35 mm)
Valve Seat
Valve Seat - Contacting Width - Intake
0.0472" ± 0.00787" - 0.0039"
(1.20 ± 0.20 - 0.10mm)
Valve Seat - Contacting Width - Exhaust
0.0591" ± 0.00787" - 0.0039"
(1.50 ± 0.20 - 0.10 mm)
Valve Seat Angle 45.5° ± 0.255°
Valve Guide
Valve Guide Inner diameter 0.2367" ± 0.00029" (6.012 ± 0.007 mm)
Valve Guide Protrusion Above Head 0.807" ± 0.0039" (20.50 ± 0.01 mm)
Va lve
Valve Margin Thickness - Intake
Standard: 0.79" (20.06 mm)
Max- 0.98" (24.89 mm) Min.- 0.59" (14.98 mm)
Valve Margin Thickness - Exhaust
Standard: 0.80" (20.32 mm)
Max- 1.0" (25.4 mm) Min.- 0.60" (15.24 mm)
Valve Stem Diameter - Intake 0.2356" ± 0.00039" (5.985 ± 0.01 mm)
Valve Stem Diameter - Exhaust 0.2351" ± 0.00039" (5.972 ± 0.01 mm)
Valve Stem Oil Clearance - Intake 0.00228" ± 0.00098" (0.058 ± 0.025 mm)
Valve Stem Oil Clearance - Exhaust 0.00275" ± 0.00098" (0.0870 ± 0.025mm)
Valve Stem Overall Length - Intake 4.51" ± 0.01476" (114.5550 ± 0.375 mm)
Valve Stem Overall Length - Exhaust 4.5453" ± .01496" (115.45 ± 0.38 mm)
Valve Spring
Valve Spring Overall Length - Free Length 1.735" (46.069 mm)
Valve Spring Overall Length - Installed Height
Intake - 1.4638" (37.18 mm)
Exhaust - 1.4736" (37.43 mm)