How much fuel do I really need?

[illtal]

Does any one if I actually need a return system to achieve 800 rwhp on 93 octane?
I'll be using water/Methanol injection for anything over 3 PSI for the hot summer months in GA.
I have DW95 Injectors, just sorting out the fueling.

Sponsored

 

[aleccolin]

What's your duty cycle at WOT with those injectors? Assume 55 psi not 43.5.

You shouldn't need a return system, you do need a DW400 pump and maybe a voltage booster. The DW400 won't dump at 58psi like the stock pump will.

 

[illtal]

What's your duty cycle at WOT with those injectors? Assume 55 psi not 43.5.

You shouldn't need a return system, you do need a DW400 pump and maybe a voltage booster. The DW400 won't dump at 58psi like the stock pump will.

This is my thoughts as well. I haven't installed it he injectors yet. I don't have e85 close so I don't want to run a tune for that.

Seeing as a dw400 and a bap is right at 600 bux, I guess I could run a "budget" return for 1000.

 

[aleccolin]

One disadvantage to the return-style system is higher fuel temperatures, which is a bad thing for gasoline. If you're not switching to an alcohol based fuel, stay returnless.

 

[illtal]

One disadvantage to the return-style system is higher fuel temperatures, which is a bad thing for gasoline. If you're not switching to an alcohol based fuel, stay returnless.

ua

Is it possible to run a Dual Pump Fuel Hat and Plug the Return and get the benefit of hi flow fuel pumps and stay returnless?

 

[aleccolin]

You're asking if you can run dual pumps on a returnless fuel system? No reason why not, the fuel pump driver might not be happy about it though. Realistically you would want a staged system that only brings on the second pump at WOT.

 

[illtal]

Yea I figured that would be the case the bigger pumps already draw more current. I would hobbs it to avoid running them both all the time. I just don't want to run out of fuel under any circumstance, but i really don't need a return system because there will never be e85 close to me unless i move back into the midwest. If doing this can be done I guess that is what I should be doing. I do know that some guys have ran out of fuel using the dw400 but i believe they are all running E85. I was thinking CPE Hat two pumps, a regulator Set at 55-58psi (I have an edelbrock 2650).

Dunno if anyone has done this. i see a lot of GT350 pump setups out there but I don't know much about them.

 

[aleccolin]

Found the article I was looking for. 800 whp should be around 900 bhp, one pump will do it - DW says it's good for 1,000 on gas.

https://www.fordnxt.com/project-grabbr/feed-four-digit-coyote-power-dropping-400-lph-fuel-pump/

I've got an Eddy blower waiting to go on with a DW400, no BAP, and I'm using FIC 650 or 775 injectors unless my tuner dissents. My target is around 650 whp (730ish bhp) which is on the threshold of safe for stock rods. Calculated duty cycle at that level is around 80% for the 650s and only 65% for the 775s thanks to the higher base fuel pressure on the Coyote.

 

[Stymee]

800RW on pump

I know peeps do it but imo that’s insane

A stick shift boosted GT350 can do it but a standard GT safely, I wouldn't take a chance

Number are always thrown around but I think 700RW on 93 is safe, once u start going 750RW fuel is VERY IMPORTANT

 

[illtal]

800RW on pump

I know peeps do it but imo that’s insane

A stick shift boosted GT350 can do it but a standard GT safely, I wouldn't take a chance

Number are always thrown around but I think 700RW on 93 is safe, once u start going 750RW fuel is VERY IMPORTANT

I don't want 800whp. Something like 720. Still going to use methanol injection on the car.

 

[illtal]

Found the article I was looking for. 800 whp should be around 900 bhp, one pump will do it - DW says it's good for 1,000 on gas.

https://www.fordnxt.com/project-grabbr/feed-four-digit-coyote-power-dropping-400-lph-fuel-pump/

I've got an Eddy blower waiting to go on with a DW400, no BAP, and I'm using FIC 650 or 775 injectors unless my tuner dissents. My target is around 650 whp (730ish bhp) which is on the threshold of safe for stock rods. Calculated duty cycle at that level is around 80% for the 650s and only 65% for the 775s thanks to the higher base fuel pressure on the Coyote.

Thanks. I was wondering if bap was needed but I'm going to go this way first. The meth is for safety.

 

[Stymee]

Thanks. I was wondering if bap was needed but I'm going to go this way first. The meth is for safety.

That article is ancient

Lund tested that pump and found it to not be good for E85, now for gas it’s great and adding a BAP will help

Just be careful using meth for hp, only use it for cooling. You should be fine on the DW400/FIC 1000/BAP running Shell 93

720RW should be pretty attainable

 

[aleccolin]

50 shot is also good for cooling

 

[illtal]

But methanol is like free hp and a octane booster too

50 shot is also good for cooling

 

[Burkey]

Found the article I was looking for. 800 whp should be around 900 bhp, one pump will do it - DW says it's good for 1,000 on gas.

https://www.fordnxt.com/project-grabbr/feed-four-digit-coyote-power-dropping-400-lph-fuel-pump/

I've got an Eddy blower waiting to go on with a DW400, no BAP, and I'm using FIC 650 or 775 injectors unless my tuner dissents. My target is around 650 whp (730ish bhp) which is on the threshold of safe for stock rods. Calculated duty cycle at that level is around 80% for the 650s and only 65% for the 775s thanks to the higher base fuel pressure on the Coyote.

Erm... to make 800 at the wheels from 900 at the crank, you’d be looking at 11% drivetrain loss. That ain’t happening.
You’d certainly be nearer 950 at the crank, possibly more.
I’m not saying the pump can’t do it, I’m just saying that you’d want to be damn sure of it.
The addition of a BAP should give you the margin you need. Again, testing FTW.

Sponsored