Basspro302
Well-Known Member
Pumping from the passenger side is not a surge tank.Few things.
1) There are several OEM "style" hats on the market now. DIvX, Deatschwerks, Radium, etc.
2) The reasons many/most of the fuel system assemblers and manufacturers recommend a min fuel level is because:
a) The size of an OE style hat/buck isn't sufficient for high hp big volume consumption systems and still presents starvation possibilities.
b) This is where things like a surge tank or other alternatives come into play.
The OE style system features a jet syphon to draw fuel from the passive (passenger) side. Even with improved jets, this transfer from the passive side (even directly into your bucket) is somewhere between 40-80 liter/hour. Enough to keep the pumps wet, but not enough to feed your motor for extended high flow conditions.
If you want to go lower than 1/2 tank or so, and NOT have a considerable risk of starvation under certain conditions, you're going to need to either pump fuel into your OE style bucket OR you're going to need a surge tank.
The track rat crowd has employed numerous other approaches to try to limit or resolve this, fuel/hydra mat, foam, barricades/dividers that prevent fuel spill over to the passive side, etc. Some of them work better than others, but frustratingly none of them ever really eliminate the issue, especially on long sweeping left turns. (or in the event you turn left hard onto a street and then mash, when you present inertia toward the passenger side, fuel is going up and over away from the active bucket.
The only proven solution is a surge tank and a very obscure setup (that I'm attempting now) to pump fuel from the passenger side rather than suck it. (using some lift pumps).
Pumping from the passive side creates it's own issues (like what happens when you're at 1/2 tank and all of it is on the driver's side, can the lift pumps withstand running dry, or must some sort of activation switch be employed, either tied to the fuel level sender or some other float.
Bottom line, there are buckets now that will indeed support pretty much whatever fuel you need (outside of like 2000 hp full on race cars).
The Radium bucket is the only one on the market that can accommodate 2 L5M brushless pumps. All of the buckets will accommodate twin DW 440 pumps which flow a shit ton without a voltage booster and with a voltage booster they'll support just about anything you might dream up (at 80 psi, without boost they'll flow roughly 700 l/h, with a constant 18V booster they'll flow like over 1000 l/h).
However, like surge tanks, brushless setups are expensive and require a driver/control module (part of the reason they can pack so much flow in such a small package is the external controller).
There are buckets that will support whatever you want, but if you're looking to get past the fuel level issue, the bucket won't solve the issue when going way high hp/flow. The bucket is just too small to effectively provide enough reservoir in reserve for extended WOT or max flow and it'll potentially suck that thing dry after just a few seconds.
putting a pump on the other side is not a surge tank.Few things.
1) There are several OEM "style" hats on the market now. DIvX, Deatschwerks, Radium, etc.
2) The reasons many/most of the fuel system assemblers and manufacturers recommend a min fuel level is because:
a) The size of an OE style hat/buck isn't sufficient for high hp big volume consumption systems and still presents starvation possibilities.
b) This is where things like a surge tank or other alternatives come into play.
The OE style system features a jet syphon to draw fuel from the passive (passenger) side. Even with improved jets, this transfer from the passive side (even directly into your bucket) is somewhere between 40-80 liter/hour. Enough to keep the pumps wet, but not enough to feed your motor for extended high flow conditions.
If you want to go lower than 1/2 tank or so, and NOT have a considerable risk of starvation under certain conditions, you're going to need to either pump fuel into your OE style bucket OR you're going to need a surge tank.
The track rat crowd has employed numerous other approaches to try to limit or resolve this, fuel/hydra mat, foam, barricades/dividers that prevent fuel spill over to the passive side, etc. Some of them work better than others, but frustratingly none of them ever really eliminate the issue, especially on long sweeping left turns. (or in the event you turn left hard onto a street and then mash, when you present inertia toward the passenger side, fuel is going up and over away from the active bucket.
The only proven solution is a surge tank and a very obscure setup (that I'm attempting now) to pump fuel from the passenger side rather than suck it. (using some lift pumps).
Pumping from the passive side creates it's own issues (like what happens when you're at 1/2 tank and all of it is on the driver's side, can the lift pumps withstand running dry, or must some sort of activation switch be employed, either tied to the fuel level sender or some other float.
Bottom line, there are buckets now that will indeed support pretty much whatever fuel you need (outside of like 2000 hp full on race cars).
The Radium bucket is the only one on the market that can accommodate 2 L5M brushless pumps. All of the buckets will accommodate twin DW 440 pumps which flow a shit ton without a voltage booster and with a voltage booster they'll support just about anything you might dream up (at 80 psi, without boost they'll flow roughly 700 l/h, with a constant 18V booster they'll flow like over 1000 l/h).
However, like surge tanks, brushless setups are expensive and require a driver/control module (part of the reason they can pack so much flow in such a small package is the external controller).
There are buckets that will support whatever you want, but if you're looking to get past the fuel level issue, the bucket won't solve the issue when going way high hp/flow. The bucket is just too small to effectively provide enough reservoir in reserve for extended WOT or max flow and it'll potentially suck that thing dry after just a few seconds.
A surge tank is a separate tank that holds the big fuel pumps and you use the stock in tank pump to feed it.
I guess technically what you said is a surge tank but the fuel can still slosh over.
http://www.radiumauto.com/MPFST-Multi-Pump-Fuel-Surge-Tank-P1565.aspx
That is a proper surge tank
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