fuel cell plumbing

cisco · Mar 25, 2007

I bought a used cell for my buggy with 22RE. It's identical to this one.

http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D290102&N=700+4294839036+4294920243+4294894962+115&autoview=sku

Should I put my return line in the top, or in the sump next to the line out to the fuel pump. The cap suposedly has a one way flapper valve built in. Does it need any other venting? Why do some tanks have an extra vent with roll over ball?

Not Jobless · Mar 25, 2007

Stick the return line in the top.

I would change the cap to a sealed type and install a vent with rollover valve.

cisco · Mar 26, 2007

Thanks for the tech, why would you use a sealed cap with a vent roll over valve? I know every one does, just wondering what the benifit is. Seems like the one way valve in the cap would do the same thing but maybe not.

Binder · Mar 26, 2007

Why would you want a vent to be one way? It needs to let air in as fuel is used and also allow air out if the rig is say parked in the sun for some time and the fuel heats and expands. Also don't trust the roll over valves, they usually don't work for ****.

cisco · Mar 26, 2007

I see your point about letting the pressure out when the gas expands. I wonder why the fuel cell was designed with a one way valve?

cisco · Mar 26, 2007

Is there a reason why putting the return line in the bottom wont work?

84Toyota4x4 · Mar 26, 2007

I just think it would be extra strain on the flow. It would have to push fuel out of the way to flow in, where as the top is just pours in.

~T.J.

Bunk1 · Mar 26, 2007

84Toyota4x4 said:
I just think it would be extra strain on the flow. It would have to push fuel out of the way to flow in, where as the top is just pours in.

~T.J.

And ya got 2 feeds to yer pump..

Not Jobless · Mar 26, 2007

cisco said:
Is there a reason why putting the return line in the bottom wont work?

I ran mine original this way years ago w/o a problem. Others have done it with different setups (motor, pump, etc...) and had nothing but issues.

cisco · Mar 26, 2007

Cool, thanks for the info.

jeepmauler · Mar 26, 2007

Jobless said:
I ran mine original this way years ago w/o a problem. Others have done it with different setups (motor, pump, etc...) and had nothing but issues.

X2......My 4.0 in the Xj had the return right next to the outlet with NO probs then the same exact setup in the 5.0 and the thing wouldn't run.It was sucking the airated fuel right from the return and wouldn't take a load,switched the return to the top of the cell and NO probs

crash2 · Mar 26, 2007

jeepmauler said:
X2......My 4.0 in the Xj had the return right next to the outlet with NO probs then the same exact setup in the 5.0 and the thing wouldn't run.It was sucking the airated fuel right from the return and wouldn't take a load,switched the return to the top of the cell and NO probs

If you were getting airated fuel from the return something else was wrong....