Dual Walbros?

[jdub]

"I'm not listening to you because the "advice" you're giving for a high HP motor is a recipe for blowing up that motor...it's just not credible."


My advise was not for you anyway, it was for twincam187. It seems that your only contribution to this thread is how in love you are with Quick and IJ.

Nope...my contribution was to show you have NFI of what you're talking about

And...congratulations! You've achieved what many others have before you :biglaugh:



(Figured a pic would make it really easy for a guy like you to understand)

 

[QWIKSTRIKE]

"I'm not listening to you because the "advice" you're giving for a high HP motor is a recipe for blowing up that motor...it's just not credible."


My advise was not for you anyway, it was for twincam187. It seems that your only contribution to this thread is how in love you are with Quick and IJ.

Well now I gotta give JD the love back, believe it or not we have been adversarial a few times, but we respect one another it seems. Knowledge recognizes knowledge. You just need to chill out. The information all three of us are passing on to anyone that chooses to believe, and hear it is that 1 walbro is suitable to 500 rwhp at max and then you will lose a piston or 2 to detonation. Why stretch your fuel system to the max, and risk blowing your investment? Don't get your feathers ruffled because your info is a bit flawed....take it in stride learn and move on. Why must this continue.Your info on this subject was not 100% accurate.

Respectfully speaking
Anthony

 

[QWIKSTRIKE]

I'm NOT having Quicks sloppy seconds!!

Whoever it is that's in :love: with us will have to choose!

Wise guy.....I get yours all the timme.lol:aigo:

 

[jdub]

Qwik - Heehee...we actually agree on 90% of things. We just like to haggle about the details

And sorry guys...wife says ya'll can't have me. Besides, you'd need some of these: :boobies:
(And that ain't gonna happen...LOL)

 

[QWIKSTRIKE]

Back on the subject..Does anyone have a writeup on how they did a dual walbro install. I know SoundPerformance can make a dual walbro setup out of your existing hanger for you for about $250. I might go that rout, since I don't trust my self with fuel.

I simi posted earlier in the thread about this procedure. If needed I ll see if I can dig up part numbers needed. Just take the stock hanger and drill out the return, nd put a 90 degree bulkhead fitting. I used this as a return and my fitting was a -6. The lines to the rail on the tank was drilled out and a -6 90 degree bulk head fitting was used. The other side of the first feed to the rail on the hanger was drilled out to accomodate another 90 degree -6 bulk head fitting. I used a isolator bought from blackdevilsupra, to shield the magnetic interference. I have 6-8" of baided hose from the feeds of the 90 degree bulk head fittings going to 2 aeromotive inline filters, and then from the filters to the ends of the fuel rail I have -6 braided hoses. I had a return machined into the middle of the fuel rail near the cs injector banjo bolt, and the return from the fuel pressure regulator is going to the tank with pushlock -6 fuel line since it wont be seen no bling necessarry.

 

[jdub]

IJ - I'd like to know about the Bosch 044 pump. Besides wiring & relay, any other issue getting it to fit in the tank (I may have misunderstood)? Or is this a straight in-line install?

 

[mattjk]

I used the 044 pump when i was setting up my integra turbo kit. You could actually hear the fuel going through the fuel rail when it turned on. LOL

 

[QWIKSTRIKE]

IJ - I'd like to know about the Bosch 044 pump. Besides wiring & relay, any other issue getting it to fit in the tank (I may have misunderstood)? Or is this a straight in-line install?

I hear that bosch pump is top notch and works great period.......

 

[jdub]

From what I've read on the Bosch, it's intended as an in-line pump. But, it also says it can be installed in the tank with "custom fabrication". heavier wiring/relay is not a problem...just wondering what other "custom fabrication" might be required besides a hanger mod. I imagine you would also need a way to get an in-tank filter/screen like stock and go to larger ID fuel line to the motor.

Considering the Bosch flows at 200 LPH at 72 psi, that far out classes the Walbro and should easily be good for pushing 700+ HP. For my 7M, that is more than I'll ever need

 

[MRSUPRA]

Well I plan on pushing my power good bit beyond my 511rwhp while still using my single Walbro. I'm not going to argue anymore (especially with Qwick-I know he will win:icon_bigg ). I will report back my personal findings and leave it at that.

 

[strictlySupra]

i still dont know how to set these pumps up in my fuel cell or what to use as an insulator. does someone make a product specifically for this application?

awesome thread though.

 

[Nick M]

How about compatability of the plethora of after market Mustang pumps? Often pumps are just the motor, and it fits the bracket just fine.

 

[QWIKSTRIKE]

i still dont know how to set these pumps up in my fuel cell or what to use as an insulator. does someone make a product specifically for this application?

awesome thread though.

I found a source that makes the insulator, but got it from blackdevilsupra, and never kept it. I will find the info an post it.

 

[IJ.]

Dub: Pretty well a straight fit but it's one case where I'd leave the stock low v relay in place my buds one is a noisy bitch (this is why I'd choose 2 x Walbro's)

Matt isn't wrong it sounds like a fire hose when pumping!
(I'd be a little concerned with temp rise in the tank as you're circulating a LOT of fuel through the engine bay and back down the return line as it's so far in excess of requirements)

 

[QWIKSTRIKE]

Well I plan on pushing my power good bit beyond my 511rwhp while still using my single Walbro. I'm not going to argue anymore (especially with Qwick-I know he will win:icon_bigg ). I will report back my personal findings and leave it at that.

Watch that wide band like a hawk.:naughty:

 

[jdub]

Ian - makes sense. It did "look" like a good idea...LOL
The fuel re-circulating should not be a problem until you get down to 5 gal or so...that would be kinda limiting.

 

[IJ.]

I'd consider running a cooler on the return Dub

The Fuel rail is going to act like a fuel preheater for the contents of the tank....

 

[jdub]

Think it would transfer that much heat to the fuel? At that rate, it would be flowing through the rail pretty fast...it would take a while to heat up.

A return cooler would be a good idea though

 

[IJ.]

Yep I think it would

People tend to underestimate just how much fuel is moving around feeding a motor at 500rwhp, by it's nature the hot fuel will be at the top of the tank with the pump sucking any colder fuel from the bottom so in short time you'll have heated ALL the fuel.

I know it's not the same thing but as a comparison I run 3 x -6 lines from the tank to the motor @ 400 psi to keep up with the motors demands and a full 90 Litre tank will last about 17 minutes if I'm hard on the gas pedal.

A petrol motor will require slightly less fuel as the BTU's are higher in the fuel but it's still moving a ton of fuel.

I'd always err on the side of caution when designing a fuel system after losing a couple of motors to leaning out on the top end, I don't know about you guys but shit is happening so damn fast with 500rwhp on tap it's almost impossible to monitor a WB and react fast enough if it does go lean

 

[Supracentral]

On one of my MKIV's I run a pressure switch to kick in the second Walbro in tanks pump once she's coming up on boost. Made tuning a little wierd at that transition poiny, and it's a bit of a bitch but helped keep the fuel cool during around the town driving.

Not sure if I'd ever do it again, I don't think it's worth the effort for a street car.

I way overspec fuel systems too for the same reasons. I'd rather have too much than not enough. I do the same things when doing injector calcs and I've never lost a motor due to insufficient fuel when using these methods...

On the way to TX2K2 I did melt #1 cyl out of a 7M running a Lexus AFM with stock injectors, a S-AFC & a walbro... Did it in 5th gear chasing down a MKIV on the highway at 140+... You're right IJ, shit happens way too fast at those speeds. Never got a chance to react to the climbing EGT's or the red numbers on the wideband. At those speeds you watch the road and nothing else.