Here's a breakdown of what's likely happened and how to proceed:
What likely happened:
Running a Ford 302 (or any engine) without intake air starves it of the air/fuel mixture needed for combustion. The engine may have still been turning (possibly due to momentum or a starter motor), but without fuel properly igniting, cylinders can effectively become air pumps. This generates significant heat, leading to:
* Low oil pressure: The oil pump may not have had sufficient pressure to lubricate the parts adequately, leading to scoring and potential seizure.
* Bearing damage: The connecting rod bearings and main bearings are most vulnerable and will likely be damaged or destroyed.
* Scuffing and scoring: Cylinder walls, piston rings, and cam lobes can suffer significant damage from the lack of lubrication and excessive heat.
What NOT to do:
* Do not attempt to turn the engine over using the starter motor. This could cause irreversible damage by forcing already damaged parts together. You risk bending connecting rods or breaking crankshaft journals.
What to do:
1. Remove the spark plugs: This will make it easier to turn the engine over (if it's possible to turn at all) by reducing compression.
2. Try turning the engine by hand: Use a wrench on the crankshaft pulley bolt (or a breaker bar for more leverage). If it turns freely, you're extremely lucky, but a thorough inspection is still absolutely necessary. If it's stuck, proceed to the next step.
3. Determine the extent of the damage: This is crucial. Simply because the engine turns a little doesn't mean it's okay. Professional inspection is likely needed.
4. Professional assessment: Take the engine to a qualified mechanic or engine rebuild shop. They can determine the extent of the damage:
* Compression test: To check for damage to the cylinders and rings.
* Leak-down test: To pinpoint problems like blown head gaskets or valve issues.
* Visual inspection: After removing the oil pan and valve covers.
5. Repair or rebuild: Based on the assessment, the mechanic will advise on repair or replacement options. A rebuild is likely, particularly if the engine turned without assistance. The cost will depend heavily on the extent of the damage.
In short, a lack of intake isn't a simple fix. The damage is likely extensive, and attempting to force the engine could cause more harm. Professional help is essential.
