detailed motor specs

[cow]

Does anyone have a website/s that has DETAILED specs on the KA24 and/or the SR20, preferably with diagrams. I am trying to do a bit of extra research on both motors and need to get some stats. I want everything like bore, stroke, rod length, cc volume, materials used, deck height, piston displacement, basically anything you can think of. The FAQs I've found don't go indepth enough.

Thanks in advance

[lessthanjakejohn]

revered D posted this in the Alty KA forum:

KA24DE Internal Specs OEM

Cylinder arrangement: Inline-4 Displacement: 2.389L (145.78cu.in) Bore and Stroke: 89mm x 96 mm(3.50 x 3.78 inches) Valve Arrangement: DOHC Firing Order: 1-3-4-2 Number of Piston Rings: -compression: 2 -oil: 1 Number of Main Bearings: 5 Compression Ratio: 9.2:1

Compression Pressure@ 300RPMs -standard: 178psi -minimum: 149psi difference between cylinders not to exceed: 14psi

Cylinder Head and Valves

Head Distortion Limits: -standard: 0.03mm(0.0012in) -limit: 0.1mm(0.004in)

Valve Head Diameter: -intake: 36.5-36.7mm -exhaust: 31.2-31.4mm

Valve Length: -intake: 101.02-101.62mm -exhaust: 98.52-99.72mm

Valve Stem Diameter: -intake: 6.965-6.980mm -exhust: 6.945-6.960mm

Valve Seat Angle: -intake & exhaust: 45deg 15'

Valve stem end surface grinding limit: less than 0.2mm

Valve Spring Free Height: 45.79mm Valve Spring Pressure: [email protected] -limit: [email protected] Valve Spring Out of Square: less than 2.0mm

Valve Lifter outer diameter: 33.960-33.975mm Lifter guide inner diameter: 34.000-34.021mm

Clearance between lifter and lifter guide: 0.025-0.061mm

Valve Guide outer diameter: -intake & exhaust: 11.023-11.034mm service @ 11.223-11.234mm

Valve Guide inner diameter: -intake & exhaust: 7.000-7.018mm

Stem to guide clearance: -intake(standard): 0.020-0.053mm -intake(service): 0.080 -exhaust(standard): 0.040-0.073mm -exhaust(service): 0.1mm

Valve Deflection Limit: 0.2mm

Cylinder Block

Block Distortion: -standard: less than 0.03mm -limit: 0.1mm

Cylinder Bore(inner diameter): grade1: 89.000-89.010mm grade2: 89.010-89.020mm grade3: 89.020-89.030mm

Out of round: less than 0.015mm taper: less than 0.010mm

difference in inner diameter between cylinders: less than 0.03mm

Nominal Block Height(from crankshaft center to deck): 246.95-247.05mm

Camshaft and Camshaft Bearings

Cam Height: -intake & exhaust: 42.415-42.605mm

Camshaft journal to bearing clearance: 0.045-0.090mm

Camshaft Runout: less than 0.2mm Camshaft End play: 0.070-0.148mm

Pistion, Rings and Pin

Skirt Dia: grade1: 88.970-88.980mm grade2: 88.980-88.990mm grade3: 88.990-89.000mm Oversize(.5): 89.470-89.500mm Oversize(1.0: 89.970-90.000mm

Piston Pin Hole dia: 20.987-20.999mm Piston to cylinder bore clearance: 0.020-0.040mm

Piston Pin Outer Diameter: 20.989-21.001mm Piston Pin to Connecting Rod Bearing: 0.005-0.017mm

Piston Ring Side Clearance: -top: 0.040-0.080mm -2nd: 0.030-0.070mm

Ring Gap: -top: 0.28-0.52mm -2nd: 0.45-.069mm -oil: 0.2-0.69mm

Connecting Rod

Center Distance: 164.95-165.05mm<< Note: Adding the machine clearances is probaly not needed in the FAQ

Bend Limit: 0.15mm Torsion Limit(twist limit): 0.30mm

Little End inner dia: 23.987.24.000mm Big End inner dia: 53.000-53.013mm *without bearing installed Side Clearance: 0.2-0.4mm

Crankshaft

Main Journal Diameter: Grade0: 59.967-59.975mm Grade1: 59.959-59.967mm Grade2: 59.951.59-959mm

Pin Journal Diameter: Grade0: 49.968-49.974mm Grade1: 49.962-49.968mm Grade2: 49.956-49.962mm

Journal Taper: less than 0.002mm Journal Out of Round: less than 0.005mm Runout: 0.04mm Free End Play: less than 0.04mm

Main Bearing Clearance: 0.020-0.047mm Connecting Rod Bearing Clearance: 0.010-0.035mm

[cow]

Wow.. that was fast.. and exactly what I need. Thanks.

[lessthanjakejohn]

no prob