Overhauled engine

There is nothing wrong with running a new engine empty, the rings ability to "seal" is not affected in any way; I would be far more concerned that the mechanic who rebuilt my engine is believing and repeating that old wives tale.

 

That engine should have seen the Dyno immediately after the rebuild.

 

Why, what is the reasoning for this.
I have never had any of mine on a dyno after an inframe?
I have heard all kinds of break in tales. I even knew one guy that would let his sit at high idle for several days following an inframe.
I always just ran mine like I always do, and have never once had a problem with the rings not seating.

 

The purpose of a Dyno isn't only to seat the rings. BTW, how do you determine that your rings are seated? A Dyno's purpose is also to verify that the rebuild was done properly. You're checking for oil and coolant leaks as well, in addition to making sure the engine is producing rated HP.

 

How do engines get broke in on new trucks?

 

The great majority of new truck engines are broken in on the road. However, there's also a percentage of engines that are dynoed at the factory before they're shipped out to a manufacturer. This insures that the assembly line is working properly and it also tests engine components that are sourced from other facilities.

 

Exactly, there is nothing that can be gained from a dyno test that will not also be revealed within the first 10 miles of driving and there is not one single thing about being loaded or empty that effects the way a ring forms a seal to a liner.

These are just enduring tall tales that persist because so few have actually inframed an engine personally, new trucks get delivered and go to work with drivers who drive them the same way the first 1000 miles as they do the last 1000 miles before they are traded in; any issues that arise after a rebuild have nothing to do with driving too many empty miles in the beginning

 

Reminds me of Bob Dylan's song: Most Likely You Go Your Way

A classic for sure.

 

Lmao.

 

Cat used to Dyno every single truck engine they built.