pukeanddie
Veteran Member
- Joined
- Mar 25, 2015
- Messages
- 26
- Location
- United States
- Vessel Name
- Mooncusser
- Vessel Make
- Rosborough RF28
It's a 30 year old Perkins 4.236. I've removed the original cast iron exhaust manifold to access other areas of the engine and while it's off I'm inspecting the water jacket. I can imagine that if it rusts through it will do serious damage letting water into the engine. All I can tell is that it's, well... rusty, but there are no obvious signs that its necessarily going to rust out anytime soon. I'm debating if I should replace this now or not. The new ones aren't cheap, so I would like to get as much life out of this as I can. I guess my question is how do I know when it's time to replace an exhaust manifold? Is this something that is routinely replaced or should it last as long as the engine?