Is it true that cranks are less likely to fail?
One of the most common myths is the belief that .010”/.010” shafts are less prone to fail than the ones that are ground to .020” or .030” undersize. Although this idea was once based in fact, it’s no longer true. We’ll take a look at the difference between the past and present, but let’s talk about what causes a crank to fail before we go there.
What makes a crankshaft shorten the life of the engine?
These include the structure of the block and crank along with the strength of the bearings, the bearing clearance and the condition of the oil film. Problems in any or all of these areas can increase the amount of bending stress and dramatically shorten the life of the crank.
How is the deflection of the crankshaft affected?
Crankshaft deflection is affected by several factors in addition to cylinder pressure. These include the structure of the block and crank along with the strength of the bearings, the bearing clearance and the condition of the oil film.
What kind of cranks are used in high performance engines?
High performance stroker motors that use factory cranks that have been offset ground are pretty common today. Depending on the application, every one of these engines has had either the rods or the mains ground undersize to accommodate a different block, stroke or rod.
What should I do if my crankshaft wont turn?
This can be a big deal and you can damage the valve if you try too hard. Normally you would set the engine up on the timing marks before removing the timing chain, and not turn the crank or camshaft until the new chain is installed.
When to attempt to start the engine, and there no crank?
When to attempt to start the engine, and there no crank or just a little but the light is dim, could be the starter locked up, high internal resistance occurs on it, brushes that worn, armature or winding is opens or shorts. Doing current draw test on the starter, and it will tell starter pulling too many amps or not.
One of the most common myths is the belief that .010”/.010” shafts are less prone to fail than the ones that are ground to .020” or .030” undersize. Although this idea was once based in fact, it’s no longer true. We’ll take a look at the difference between the past and present, but let’s talk about what causes a crank to fail before we go there.
These include the structure of the block and crank along with the strength of the bearings, the bearing clearance and the condition of the oil film. Problems in any or all of these areas can increase the amount of bending stress and dramatically shorten the life of the crank.