
Originally Posted by
John C.
I haven't rebuilt a Cat engine in a long time but have been bit really hard using aftermarket stuff on them when it did. I put a high power D8H together once using aftermarket pistons and rings and had a top ring break at 450 hours of operation. The supplier told me it would not be covered under warranty. So I ordered another liner kit and then refused to pay for it.
At that time the labor to install the thing was far more than the part. I made sure that after that I used the factory stuff on the critical parts. So I might use a head rebuilt by someone else but I would never install rod and main bearings from an aftermarket supplier without a guarantee on paper. I would never use any but the manufacturer's ring sets anymore.
The whole thing depends on your tolerance for risk. If you don't think your time is worth anything and you are cash poor then the risk of a short running failure might be worth it. However Murphy's law applies just as much here as it does anywhere else.
Good Luck!