How an Engine 'Blows' Affects Your Car and Wallet

Understanding an Engine 'Blow'

When an engine 'blows,' it's a term that can describe various levels of damage ranging from mild to severe. An engine blowing can be due to several factors, one of the most common being wear out on the piston rod bearings. These bearings are crucial as they connect the piston rod to the crankshaft and are subjected to intense loads, friction, and heat. When a bearing fails, typically due to lack of proper lubrication, metal fatigue, or excessive RPMs, the engine rod can become completely separated from the crankshaft. This usually happens at high RPM, causing significant damage to other internal engine parts.

What Happens When an Engine 'Blows'

The immediate effects of an engine 'blowing' are substantial. Most engines will stall abruptly, requiring the driver to apply the clutch and coast to a stop, possibly on the side of the road. This can be dangerous, so safety should always be the priority. The internal damage can be extensive, including holes in the oil pan or even the engine block. Beyond the technical issues, the financial implications are significant. Rebuilding or replacing an engine can lead to a substantial hit on your bank account.

Common Causes and Repairs

It's important to note that 'blown' is a broad term. It could range from a simple head gasket issue to a major bottom end destruction where the piston rod is thrown and can punch a hole in the block. Typically, such issues require replacing the entire engine or at least the internal parts. Engine blocks can sometimes be repaired, but this is a complex and costly process. The reality is that many times, the solution is to replace the engine entirely, which can involve using a spare engine from a junkyard.

Financial Implications

The cost of repairing or replacing an engine can vary widely. It's not uncommon for the repair to cost more than the value of the engine itself, but the term 'blow' generally indicates that the engine is irreparable. In practice, most people choose to replace the engine with a used one from a salvage yard, which can be significantly cheaper than rebuilding an entire engine from scratch.

Conclusion

An engine 'blowing' is not just a minor inconvenience but a significant event that can disrupt your daily routine and financial plan. Understanding the potential causes and the extent of the damage can help you prepare better for any future engine issues. If you suspect an issue, it's advisable to seek professional assistance right away to avoid more severe and expensive damages.