Surge Tank + Fuel Pump, When Do You Need Them And Why?

[arronm]

Nice AFRs

[MattyP]

But for the price of a 255 you may as well install the 460. It's not that much more expensive

[rollex]

But for the price of a 255 you may as well install the 460. It's not that much more expensive

But if I'm not using the extra flow I'm just cooking my fuel for no reason, it is probably also louder. Every options has cons as well which should be looked at.

Edited 23/10/14 04:00 AM by rollex

[MattyP]

Of course every setup has cons

But your fuel doesn't get cooked

A lot of people use 460s as their dailys and have no issues. There is nothing worse than replacing already aftermarket parts and a 255 doesn't have that much wiggle room

[masda74]

Please excuse this question, but I am still a noob and learning.

Why would It cook if you put a 460 in your fuel tank.

Isn't the excess fuel sent back to the tank?

Or are you referring to putting a 460 in the surge tank?

Edited 23/10/14 04:16 AM by masda74

[rollex]

Surge tank especially but for example lots of people have problems with their fuel boiling when they use a 044 and sit around idling at the lights in summer. A 460 could have similar issues at half tank, look at the litres per minute they flow, it doesn't take long to pump the entire tank through the 100c engine bay.

Unless the BF/FG reduces pump voltage at idle/cruise, I know some cars ECUs do this. Does anyone know?

Edited 23/10/14 04:15 AM by rollex

[MattyP]

It doesn't masda...

Sorry if that didn't come up clear in my last post

Edit

I thought you were talking about a 460 in tank cooking fuel.

In a surge it would for sure and this has been proven if the return line is plumbed back into the surge.

On a hot day though in tanks will still get hot fuel. You can't avoid it. Just won't be as hot as the surge system I described above

Edited 23/10/14 04:19 AM by MattyP

[masda74]

Nah the FG does not reduce voltage at idle or cruise. I believe both Ralph and GeGe6 have changed their fuel pumps to the Fuela(is that how it is spelt) gear to combat that.

[MattyP]

Yeah I know and I'm very jealous that my system doesn't do that.

But at 255lph you're still going to "cook" your fuel

Heat in any performance car is unavoidable. It just has to be manageable and It seems that in tanks do the best at keeping it cool and providing adequate performance for most of our power levels.

If people want and prefer surges, there isn't anything wrong with that all I'm saying is there is alternatives now

[masda74]

Question for those in the know. I m making an assumption here so don't shoot me down.

Once a surge tank is installed, how come the return line goes to the surge tank and not the fuel tank?