Monday to Friday: 9am – 6pm EST (+852)63548665

How long does con rod bearings last?

In some cases, car maintenance is straightforward and easy. Just change the oil and belts per the manufacturer’s recommendations, listen for strange noises, and keep an eye on the instrument panel for warning lights. Many parts give us plenty of warning before giving up the good fight. Unfortunately, we have no such insight with crankshaft bearings.

Crankshaft bearings support the crankshaft (one of the components that make the engine turn), which sounds simple enough. However, con bearings must also reduce friction between the rotating crankshaft and the stationary engine block, and this is how they suffer the most damage over their lifetime. Depends on how fast and hard you work on the car.

Typically a mechanic will remove the entire engine, then everything must be disassembled and cleaned to remove any old debris from the old con bearing inside the engine.

Now if it’s just a low oil pressure problem in the old rod bearing that hasn’t failed yet, they can skip a few steps and get it together sooner.

However, it is a big job and requires many parts and time.

They typically wear out due to other engine functions, not that of the bearing itself, making it impossible to predict how long they will last or when they will fail. Under ideal conditions, they would last indefinitely. However, they usually consist of copper and lead compounds, which are subject to various weaknesses. The most important factor is lubrication. Generally, as long as clean oil flows steadily, the bearings will continue to move well. For example bobcat s185 engine and bobcat 320 reviews Well done on this.However, if the oil is dirty or the supply is interrupted, the problems begin.

Crankshaft bearings can wear out due to:

  • excessive heat (if the oil doesn’t provide sufficient cooling)
  • pressure
  • etching or corrosion due to exposure to chemicals or acid in contaminated oil
  • exposure to dirt or debris in the oil, which will scratch the bearings (in turn scratching the engine parts they contact)
  • drying out due to oil leakage, blockage or otherwise poor circulation (also sometimes caused by incorrectly sized or fitted bearings)
  • metal-on-metal contact (as a result of drying out from poor oil flow)

These are all common conditions in a car 6d125 engine and are sometimes signs of other problems. There aren’t many outward signs of crankshaft bearing problems, but if you suspect that the oil supply might be compromised, there’s a good chance that premature wear is occurring internally. If your crankshaft is leaking oil due to a blown seal, you’ll see a puddle in your parking lot. When the car is running, it smells like burning oil as it drips onto the hot manifold. Be careful because it will only get worse from there

So what happens when your crankshaft bearings finally give out? When your mechanic tells you there’s a “catastrophic engine failure,” he’s not glossing over it for dramatic effect — it’s the actual term being used. When con bearings fail, the increase in heat, pressure, and metal contact can cause the crankshaft and connecting rods to deform, which in turn leads to engine seizure. It is necessary to completely disassemble and reassemble the engine (if you decide to keep the car).

Although there is no recommended replacement interval for the bearings, replacing them is a standard part of an engine rebuild service. Putting dirty, scratched, corroded bearings back into a rebuilt engine makes little sense; The old parts quickly damage the fresh parts. If you end up with new crankshaft bearings, they might last a little longer this time. Some original equipment manufacturers (the companies that supply automakers with the parts they need) are switching to aluminum bearings instead of the traditional copper/lead bearings. Aluminum is cheaper and more durable, and has better temperature tolerance.

Such asd1703 kubotaengine for sale ,d722 kubota engine for sale and d750 kubota engine.Everything has to be soaked in a high temperature cleaner and then the crankshaft has to be reground to the correct specs and then everything has to be assembled which would take a good mechanic at least a week assuming the machine shop wouldn’t slow down.

Whether your car recently suffered catastrophic engine failure or you’re hoping to get a few thousand more miles from your leaking bottom end, read on for more information on engine operation and maintenance.




Fast and traceable shipping service to ensure timely delivery


Safety payment and privacy security assurance


Specialist teams are ready to offer service and support


Highest pricing advantages directly from factories