ee p UNIVERSAL SERIES SERVICE MANUAL D D 1 13 HURRICHNE F4 ENGINE SPECIFJICHTIONS Continued MODEL ENGLISH METRIC VALVE SYSTEM Continued Timing Intake Opens 9 BTC Closes i 50 ABC Duration 239 Exhaust Opens i 47 BBC Closes 12 ATC Duration 239 Valve Opening Overlap 4 21 Valves Intake Material SAE 5150 Length Over All 4 781 12 14 cm Head Diameter 2 5 08 cm Angle of Seat 46 Stem Diameter 3733 to 3738 9 481 a 9 494 mm Stem to Guide Clearance 0007 to 0O22 0 0178 a 0 0559 mm E Igifit 260 6 604 mm x aunt Material Uniloy 21 12 Length Over All 5 909 15 008 cm Head Diameter 1 47 3 733 cm Angle of Seat 46 Seat Insert Material Eatonite EMS SB Steim Diameter 371 to 372 9 423 a 9 449 mm Ste1m to Guide Clearance l 0025 to 0045 0 0635 a 0 1 143 mm S Lift 351 8 915 mm prings Intake Freegength 1 97 5 003 cm Stan ard Pressure Length 1 Valve Closed 73 lb 1 66 33 1 kg rr 4 216 cm S Valli Open 153 lb 1 40 69 4 kg rp 3 556 cm ervice inimum i Pressure Length 1 Valve Closed l 66 lb 1 66 29 9 kg rl 4 216 cm Valve Open 140 lb 1 40 63 5 kg u 3 556 cm Exhaust Free Length l 2 1 6 350 cm Pressure Length l Standard i Valve Closed 53 lb 2 l09 24 kg rr 5 356 cm Valve Open 120 lb 1 750 54 3 kg u 4 445 cm Service Minimum l Valve Closed 47 lb 2Z 21 3 kg M 5 356cm Valve Open 110 lb 1 49 9 kg M 4 445 cm LUBRICATION SYSTEM 1 I Type of Lubrication i Main Bearings l Pressure Connecting Rods Pressure Piston Pins Splash Camshaft Bearings Pressure Tappects S ash Timing Gears Nilzzle Cylinder Walls Nozzle Oil Pump l Type Internal Rotor Drive Camshaft Gear I Minimum Safe Oil Pressure 4 At lldle 1 6 psi 0 4 kg cmm At 2000 rpm 35 mph 20 psi 1 4 kg cm Relief Valve Opens 40 psi 2 8 kg cm Oi1 I rm al Oi Pr ssurIe 35 psi 2000 rpm 2 4 kg cmz 2000 rpm ressure en ing nit Electric Oil Intake Floating Oil Filter System Partial Flow l 73