On Sun, 28 Dec 2008 09:56:35 -0500, Wayne.B wrote:

On Sun, 28 Dec 2008 04:23:57 -0500, RLM wrote:

With alloys and liners no problem. The crank and rods is where the beef
is at.

Aluminum heads were used on some diesels in the sixties. Ask an Onan
dealer about DJB's and DJC's. Air and water cooled.

And why is it they are no longer being made? Lack of durability
perhaps? If these were great engines they would have taken over the
market for lightweight diesels by now.

I don't know that they aren't still being made or replaced with a cheaper
engine from a vendor to stay competitive.

This was before Cummins bought them out. I've not kept track of Onan.
Onan didn't release all engine models for industral engine use. The most
common one you will see is probably the CCK style two cyl. opposed engine.
It has been updated and copied over the years so the model designation
changes. Same basic boxer design. Many engines were bought from vendors.

If you're really wanting to know, do the research and keep it to yourself.
These were some of the earlier examples.