Achieva L4-144 2.4L DOHC VIN T SFI (1996)
Valve Guide: Specifications
Cylinder Head, Valve Guide & Valve Seats
Engine Specifications
Cylinder Head
Cylinder Head Flatness - Max Overall ................................................................................................................................................. 0.076 mm (0.003")
Do Not Resurface ............................................................................................................................................................ Less tan 0.076 mm (0.003")
Resurface ........................................................................................................................................................ 0.076 mm - 0.25 mm (0.003" - 0.010")
Replace Head ............................................................................................................................................................. More Than 0.25 mm (0.010")
Volume ................................................................................................................................................ 58.9 cc - 60.1 cc (1.5825 oz. - 1.6501 oz.)
Runout ................................................................................................................................................................................... 0.05 mm (0.00196")
Valve Seat Diameter Intake ................................................................................................................................................. 34.066 mm (1.3412")
Exhaust ..................................................................................................................................................................................... 27.048 mm (1.1436 ")
Intake Valve Guide I.D. .................................................................................................................................. 5.921 mm - 5.941 mm (0.2331" - 0.2339")
Exhaust Valve Guide I.D. ............................................................................................................................... 5.908 mm - 5.928 mm (0.2326" - 0.2334")
Valve Stem to Valve Guide Clearance Intake .......................................................................................... 0.024 mm - 0.070 mm (0.000986" - 0.00275")
Exhaust ................................................................................................................................................. 0.037 mm - 0.082 mm (0.00150" - 0.00320")
Valve Lifter
Clearance in Bore ........................................................................................................................................... 0.016 mm - 0.058 mm (0.0006" - 0.0023")
Valves
Valve Installed Height - All ............................................................................................................................ 24.86 mm - 25.62 mm (0.9787" - 1.0024")
Measure From Top of Valve Stem to Top of Camshaft Housing Mounting Surface Valve
Tip Above Spring Retainer - All ......................................................................................................... 0.602 mm - 0.820 mm (0.0237" - 0.0323")
Intake Valves Valve Face Angle ....................................................................................................................................................................... 46 degrees
Valve Seat Angle ........................................................................................................................................................................................ 45 degrees
Head Diameter ............................................................................................................................................... 35.5 mm ±0.03 mm (1.3987" ± .0011")
Stem Diameter .......................................................................................................................................... 5.921 mm - 5.941 mm (0.2331" - 0.2339")
Overall Length ......................................................................................................................................................................... 107.290 mm (4.2272")
Stem to Guide Clearance .......................................................................................................................... 0.025 mm - 0.069 mm (0.0009" - 0.0025")
Valve Seat Width .......................................................................................................................................... 0.94 mm - 1.90 mm (0.0370" - 0.0748")
Valve Seat Margin (min.) .............................................................................................................................................................. 0.25 mm (0.0098")
Valve Face Runout ....................................................................................................................................................................... 0.038 mm (0.0015")
Valve Tip to Groove Centerline .................................................................................................................................................... 3.420 mm (0.1346")
Exhaust Valves Valve Face Angle ................................................................................................................................................................. 45.5 degrees
Valve Seat Angle ........................................................................................................................................................................................ 45 degrees
Head Diameter ...................................................................................................................................... 28.870 mm - 29.130 mm (1.1366" - 1.1469")
Stem Diameter .......................................................................................................................................... 5.908 mm - 5.928 mm (0.2326" - 0.2334")
Overall Length .......................................................................................................................................................................... 108.17 mm (4.2586")
Stem to Guide Clearance .......................................................................................................................... 0.038 mm - 0.082 mm (0.0016" - 0.0032")
Valve Seat Width ........................................................................................................................................ 0.094 mm - 1.90 mm (0.0037" - 0.0748")
Valve Seat Margin (Min.) .............................................................................................................................................................. 0.25 mm (0.0098")
Valve Face Runout ....................................................................................................................................................................... 0.038 mm (0.0015")
Valve Tip to Groove Centerline ................................................................................................................................................... 3.420 mm (0.1346")
Valve Springs
Valve Spring Pressure Load @ 36.5 mm (1.4370") (Closed) ........................................................................................................ 223-247 N (50-55 lbs.)
Load @ 26.98 mm (1.0622") (Open) ........................................................................................................................................ 544-596 N (122-133 lbs.)