Integrated Surge Tank Pumps Vs Externally Mounted Pumps

[GD51LA]

hey guys, want your opinion on this

I'm looking at the Aftermarket Industry's SP800 integrated surge tank

isn't having 3 (warm) pumps inside a 3L surge tank going to heat the fuel in the surge tank?

wouldn't having the pumps external be more efficient in terms of heating the fuel?

[HarrisRacing]

After having numerous fueling issues associated with high temperature fuel on highway driving (45 min +) I decided to cut voltage going to the pump on cruise and it helped immensely.

My setup is a DW300 in tank (lift pump) feeding a small Integrated Engineering sump with a single AEM 380 lph pump going to the Hypertune fuel rail setup (V2 complete intake) and an aeromotive regulator. The lift pump flows into the sump and returns back to the tank (keeping it full) and runs on battery voltage on a relay (switched on with computer fuel pump out). The AEM380 lph is wired such that I am running battery voltage to/from the pump back into a 5 pin 30 amp relay. On the NC leg of the relay I'm going to the factory voltage controller and letting that reduce voltage by limiting the grounding of this leg of the pump. The switched leg (NO) goes straight to ground and is controlled by my Haltech at 3k rpms and 0 psi boost. This way when I'm cruising and the pump is at low voltage and is quiet...Then pretty much anytime I am in boost I am getting full battery voltage through the pump. It helped ALOT. This pump would be extremely noisy after the fuel was overheated and would sound like fuel cavitation after 45 or so minutes especially at 1/3 or less fuel.

IMO if you have multiple pumps, you should be running some sort of fuel pump control in order to reduce added heat. It's also silly IMO to just blast your FPR all day long with more flow than it should be seeing.

In the next week or so I will be dumping the factory voltage controller and going to complete PWM fuel pump control for both pumps on Solid State Relays. This way I can get nice smooth fuel controls for both pumps and can forget the factory setup altogether.

[GD51LA]

great reply!

show us the pump control setup when it's done

[r33cruiser]

Anyone else installed one of these integrated surge tanks?

I've had a bit of work done at East Coast Customs and the only think holding me back now is my fuel supply.

New fuel rail, turbosmart reg and Bosch 1000cc'ers have been purchased. But the team were chatting to me about fuel supply from the tank.

From what I've researched there are three schools of thought (keep in mind I'm staying on 98):

1-External tank and pumps (I'm not interest in stuffing around with this)

2- Surge tank mounted in boot with 2 pumps (most likely 044's)

3- Install integrated surge tank with pumps in it on the rear shelf in the r33 boot

I like the idea of option 3, it is neat and tidy and can hide behind the fabric partition in the rear boot near the battery tray. Option 2 is probably the most common, but I don't like the idea of the pumps and tank being so exposed if the boot is opened. My car is essentially a sleeper with practically no external modifications to avoid unwanted police attention (and clean skylines are rare these days).

 

[admS15]

If sleeper is what you want. Then why not a large single walbro 460? How many rwkw are we talking here?

[r33cruiser]

500-550hp goal. Currently maxed out at 430rwhp before the tuner claimed my injectors were maxing out.

Are in-tank pumps really a viable alternative to surge tanks, do they perform well these days under g-loads? 

I know I've been out of the game for a good 3-4 years now, but if they are, well damn-i'll buy one tomorrow.

 

Quick note- this is not a dedicated track car, not a daily, just a toy that sits in the garage for the odd track & skid day.

[admS15]

I'm pretty sure a walbro 460 will do you fine. Especially on 98. I'll let someone else come and confirm.

[r33cruiser]

Cool, more money for hookers and blackjack

Edited December 15, 2016 by r33cruiser

[admS15]

I prefer coke, pretty sure Arnie does too[emoji106]

[sneakey pete]

Whoever is telling you you need twin walbros or 040's for 98 is probably being a bit silly here, or thinking you'll end up going E85 down the track.
Single walbro 460 mounted PROPERLY in the tank will do the job fine. Unless you want to do a trackday with only 15L of fuel left in there.

Otherwise you're buying not just a surge tank, but lines and fittings front to back that you don't need.