Originally Posted by Dpmmvc
I have some surface rust on my universal m25 marine diesel
as well as large sections of peeling paint. My question is, what is the best paint to stop the rust, AND can I paint the motor
without removing it from the engine compartment?? The engine is in a Catalina 30
so it’s kind of tight quarters in the engine compartment... see attached pics. Thanks!
If you can a scaling gun will help a lot.
The biggest issue I see here, and correct me folks if I'm incorrect.
I'm VERY concerned about what you'll not be able to get to.
The picture with the black hose that is routed under your oil
pan/sump shows an abundence of rust.
The pan on those diesels, are not as robust as say a Perkins
or Atomic 4(gas)and will pinhole soon.
This potentially can seize that engine if not noticed soon enough.
It's really not that difficult to remove that engine and do it correctly.
Those will sit right in the salon
or right on the bay of the engine and Are simple to remove.
You'll benefit from a good look at area and be able to probe it abit to inspect its condition.
If you think it solid enough, coat it with a converter and paint several coats, remember it's not coming out again for awhile.
It's a PITA for sure, and I respect your interest in taking care of that rust.
You may find a few Gremlins in there with all that rusty stuff but it's going to be well worth the work
you'll be doing.
Whatever you decide, know that if you do this removal
and inspect and clean ,repair and repaint, it's going to be to your advantage.
SV Cloud Duster