Originally Posted by db2
I would like to invite comments on the fuel delivery system of my Californian 42LRC with twin Perkins 6.354Ts. Each engine runs on 2 tanks, the 4 tanks are not interconnected.
Sounds like somebody did some modifications along the line.
Depending on the year and style of your Californian there could be variations. But if your boat is a Marshal tri-cabin with twin port and starboard aft cabin beds, you would of had two 120+ gallon tanks under each bed. The port tanks feed the port engines and the starboard tanks feed the starboard engine, with a tee at the filter that feeds the generator.
Originally there would have been a cross over hose with a valve on either end, between the two port and two starboard tanks to equalize the fuel levels. Sounds like someone removed this line. This could cause your boat to list a little if you run the generator a lot. Unless there is a reason not to, I would re-install the cross over system.
The swagged collar fuel lines are bullet poof for the most part. I had one hose start weeping right at the fuel filter, probably caused from over flexing, which I replaced. The rest outside of the engine room looked fine. There is a 1 1/2" hose barb under that swagged collar and as a precaution I added a stainless steel clamp to each behind the collar anyway just to be safe.
My boats over 35 years old and I've never had a problem with this setup. Plus it corresponds to the KISS principle which is a good thing!!