Fuel tanks

[michaeleast77]

What insulation material should used on Diesel fuel tanks ?

 

[Paulg25]

What insulation material should used on Diesel fuel tanks ?

Why do you need to insulate it?

 

[ST840]

Would that not make the tank sweat inside?

 

[michaeleast77]

The tanks were insulated before. I am refitting them after repair

 

[Boathook]

The tanks were insulated before. I am refitting them after repair

Use the same type that you took off?

 

[michaeleast77]

The boat is 31 years old .. same stuff not available

 

[DavidJ]

All my boats have had uninsulated tanks and I assume this is true for most standard production boats. There are debates about condensation and whether to leave tanks full or empty but I’m not aware of problems either way. Also your era of engine will be more tolerant of any water than the modern direct injection type engine.

 

[ChromeDome]

Agree that the purpose of insulation need to be known to suggest anything.

Mine is uninsulated and kept full, btw. Never had any water issues.

 

[Timeless 2]

On my boat the tanks in the engine are insulated with what looks like Armaflex closed cell sheets. These are available with peel off adhesive type backing and are available in various thickness. There are probably other suppliers other than Armaflex now, they were leaders in this field 25 years ago. eBay closed cell insulation sheets. I’m not convinced that it’s necessary, it’s now deteriorating and leaving a powdery residue

 

[michaeleast77]

Thanks all,
I think I will not fit any tank insulation.

 

[snowbird30ds]

Was it for insulation or sound deadening?
A metal fuel tank can bounce a lot of engine noise around.

 

[vas]

and along snowbird30ds point, were they insulated ALL around or just the engine facing side?