Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1994AEROSTAR AWD V6-245 4.0LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYSYSTEM SPECIFICATIONS
1994 Ford Aerostar AWD V6-245 4.0L
System Specifications
1994 Ford Aerostar AWD V6-245 4.0LSECTION System Specifications
Head Gasket Surface Flatness 0.003 in any 6 inches - 0.006 overall
Head Gasket Surface Finish (RMS) 60-150
Crankshaft To Rear Face Of Block Runout (T.I.R. Max.) 0.005
Cylinder Taper Bore Diameter 0.8750-0.8760
Main Bearing Bore Diameter 2.3866-2.3874
Cylinder Bore Diameter 3.9527-3.9543
Cylinder Bore Surface Finish (RMS) 18.38
Cylinder Bore Out-Of-Round 0.0015
Cylinder Bore Out-Of-Round Limit 0.005
Cylinder Bore Taper Service Limit 0.010
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.