[C320-list] Exhaust elbow replacement Perkins M30 / Volvo 2030

[Roger Sullivan via C320-list]

I made a blog post describing the process of replacing the exhaust elbow on
a M30 / MD2030 on my #11 320 for those who are interested. It is at:

https://catalina320missworld.blogspot.com/

I know I'm speaking to the choir, but if you haven't done this on your 20+
year old diesel - you probably need to.

Roger

[Dave Hupe via C320-list]

Roger-
I replaced the heat exchanger tank and all associated hoses and boots several years ago on my 1993/4 Perkins Perama M30. My old tank's filler neck was partially broken off so my "radiator" cap barely stayed in place.  I reused my heat exchanger tube after cleaning without a problem. Obviously I had to remove my exhaust elbow as part of this process.  Although I expected a problem, I found my exhaust elbow to be completely open and seemingly fine.  I did reuse it and have not had any issue. 
I offer that there may be significant differences in this situation depending if your boat is freshwater or salt water. My boat has always been freshwater.
Dave Hupe 
1994 C320 #32
Holland, MI 

Yahoo Mail: Search, Organize, Conquer

On Sun, Apr 12, 2026 at 12:38 PM, Roger Sullivan via C320-list<c320...@lists.catalina320.com> wrote: I made a blog post describing the process of replacing the exhaust elbow on