Are gas tank baffles necessary?

Hey guys, Looking at gas tanks for my 37 p-up. Some have baffles some don't, is there a good reason for this? Also any slick ideas for mounting a universal tank would be appreciated. Thanks...

 

Far as I know, it minimizes the slosh and keeps the fuel flowing. Not sure they are 'absolutely' necessary.

I had a company in Texas fab up this aluminum tank. I made straps and mounted it between the frame rails under the bed. There is a 'marine' fill neck countersunk into the wood bed on top. They installed baffles in this tank.

 

Keeping the fuel "slosh" to a minimum helps keep the fuel at the point of exit, keeps from beating the **** out of the fuel sender lever/float, and keeps the fuel gauge from reading all over the place

 

Tank baffles also limit the transfer of fuel weight on turns which improves stability. They cut down og fuel slosh noise if the tank is under or behind the seat.

Bob

 

It’s also for safety. Think about 15 gallons of fuel stopping instantly – that’s a lot of m*** moving forward then suddenly stopping. You want that fuel to stay in the tank and not burst out all over the place. The baffles help keep the fuel from sloshing too much plus add a lot of structure to the tank. All my “Model T” tanks have baffles.

 

That is why race car tanks have foam spunges in them.

 

yes

 

Not if you keep the tank completely full all of the time.

 

Yep on tracks that have alot of switchback turns it's essential because theres enough sloshing weight to send you into a dangerous slide and possibly a roll.

All newer water and fuel tankers have it in their cargo tanks because they would have no way to stop quickly otherwise. especially on rain or snow.

If your going to build a tank or have one built. always have baffels installed. you'll get better braking distance, less weight transfer upestting your suspension in turns, and your fuel gauge wont be for straight roads only

 

Thanks for all the answers, I thought I'd found a tank for around $215 but it has no baffle,guess I'll p*** on that one. Nice set-up Big T!

 

Thanks.... mine was hand fabbed for about $250. Baffles included and made to measurements. Is your tank under or behind the seat? Can you buy a new original style tank for it? Or are you looking to move it as a priority?

 

Sending unit/pump protection?

 

i would use baffles

 

Not really. race tanks are a whole different deal and the days of the sponge is way gone .. Now its a bladder and it mainly for safety from fires.
All the info is available on the net and Google is your friend..
Dave

 

Foam in fuel cells is for explosion suppressant - not slosh prevention. Same technology used in aircraft for years and years.

 

Also if you have an electric fuel pump(mechanical too, but not as crucial) its important to keep fuel flowing in it so it doesn't burn up. Air bubbles and running the pump with no fuel can ruin them.