Ah, I understand.
But if you buy a new car there is always a recommandation how to use it the very first time.
A rebuild engine is way more sensitive than a brand new engine- I would point that out to a customer.

 

Yes but if the rings are seated when it leaves then I don't have to listen to him bitch about it in month that it has a lot of blow by

 

What about cross-hatching the cylinder?

There are only a few able to do this right.

I copied this because I'm lazy:
After an engine is overhauled or has a major repair it is run in a test cell to ensure operating characteristics and to begin the break in process. However this process may take as long as 100 hours of operation to complete.
The driver, is in control of engine break in for 98 % of the time that it takes to occur. This is a serious responsibility when you consider the expense and aggravation of having to remove, re-hone and re-ring cylinders that have glazed and not broken in.

 

Sounds like a short-cut dreamed up by somebody who does not own the engine.

 

Interesting conclusion to something you must know nothing about

 

Apparently you don't much about it either, or you wouldn't have asked.

Glad it's not my engine you're working on!

 

I've heard of starting a fresh rebuild without water. I've also heard of dumping Ajax down the intake to seat the rings. Your break-in practices are up to you, but there's a reason the standard practices are standard, they offer a compromise between quick break-in and long engine life. Speed up break-in too much, the engine may not make it through the warranty period.

 

Not to mention the old-school vs. new-school angles.

 

No I personally have not done it before that's why I started the thread!! Al tho I have seen it done....Just because it don't make sense to you don't mean it won't work. if I had a dyno on sight I would reconsider a different method. When I watched it being done there was an infrared temp gun pointed at the side of the block when it got too a certain temp the motor was shut down. I don't know what temp that was. If I knew I wouldn't even have asked. This motor was in a machine that I operated for awhile right after it was rebuilt and the rings where seated from day one virtually no blow by. So anyways I will be doing this and will report back thanks for everybody's concerns and opinions!

 

I worked at an engine rebuild shop 25 yrs ago,I test ran many engines that we built.I made adapters for fuel&water. I imagine to do that now maybe tough to do,one would need ecm's etc