Twin in-tank pumps or A1000 external for LSx swap?

[PPI Typhoon]

Ok, so I'm going to tackle my fuel system next on the Typhoon. I'm torn between two options:

Twin Walbros in-tank
or
Sumped tank with Aeromotive external

For those with the external pumps, I'm hearing (no pun intended) that they are loud. I'm not going for an all-out race vehicle, so I'd like to be able to drive it around without some annoying fuel pump sounds.

Obviously Mike Lee now sells the double pump setup, which is a nice plug and play.

What about redoing the lines from the tank forward? How hard is it to convert to AN fittings so I can run new lines up front?

Thanks for any feedback. :tup:

 

[Aeroking]

Re: Twin in-tank pumps or A1000 external for LSx swap?

I run the single intank Walbro in the Sy. I just put a twin Walbro setup on a friends 408 PTE88. They're noisy, but not near what an external is.

As for the AN lines. The fittings on the stock fuel rails & tank are 16mm, and 14mm Saginaw. So you need the AN fittings to go from 16mm to -8AN, and 14mm to -6AN.

Mike carries all lines and fittings. you'd just need a -8AN inline fuel filter

 

[JSM]

Re: Twin in-tank pumps or A1000 external for LSx swap?

Walbro will be a lot quieter than any external. I am personally not a fan of aeromotive pumps after taking one apart. Lots of people have good luck with them though.

Just be sure you get real Walbro's and not china knockoffs.

Twin pumps should handle 600hp or so, above that you might want to think of another route.

 

[vanillagorilla]

Re: Twin in-tank pumps or A1000 external for LSx swap?

Some Aeromotives can be submerged. I'm not sure which specific ones, but that might be some food for thought.

 

[TYHOGG]

Re: Twin in-tank pumps or A1000 external for LSx swap?

Some Aeromotives can be submerged. I'm not sure which specific ones, but that might be some food for thought.

You can submerge the a100 just try finding a tank with a hole big enough to fit it through, lol.

 

[MIGHTYMOUSE]

Re: Twin in-tank pumps or A1000 external for LSx swap?

only time ive messed with aeromotives is when taking them off of peoples cars because they were not working or working properly

i did the twin walbros in my truck just like in my car. no reason not to and I would expect you to get safely into the 800rwhp range if you do a good job of managing fuel pressure. I would not expect the factory pressure line to be a problem here either. The rails I am unsure of.

I also set up a sumped tank on a t6 turbo mustang with an external walbro and bosch '044' pump. They are both still way way quieter than the aeromotive and in my opinion are more reliable especially for street.

 

[dgoodhue]

Re: Twin in-tank pumps or A1000 external for LSx swap?

It will depend a little bit on how much boost your planning to run and what your base fuel pressure is. 55psi of total fuel pressure is a lot different fuel output than someone run 70 psi+

 

[Maxtor]

Re: Twin in-tank pumps or A1000 external for LSx swap?

I have twin in-tank pumps. Two probs I see with this. 1)If one pump fails and the other continues to run at WOT it will create a large drop in FP very quickly. I think everyone knows what happens next. 2)If you don't change anything else you wil still have the "fuel slosh" issue and starve the pumps with less than 1/2-3/4 tank of fuel on launch.

I will probably be converting my twin pump sys to a single external with a sumped tank this winter for these two reasons.

As far as the A1000 noise, I guess it's personal preference. I really don't think they are loud, but others apparently do. I really wonder how many A1000's fail and what the conditions were that created the failure. Internet hype can skew actual results greatly. When "everyone knows" something is junk people jump on the bandwagon in a hurry. A lot of high performance cars run Aeromotive pumps with no issues.

Also, my truck has always used the stock fuel rail with no issues. I'm sure there is a point where it could be a problem with limiting flow but I've never found it.

I would call Mike Lee. He stocks all of these parts and fittings.

 

[MIGHTYMOUSE]

Re: Twin in-tank pumps or A1000 external for LSx swap?

didnt know our trucks have the slosh problem, thought i saw a slosh panel in the tank for sure when i was in there.. maybe not. I race w/ 5 gal in the truck and car at all times. normally the f body guys that have 'slosh' problems just didnt put the pump deep enough into the tank.

you are right, and i do and always reccomend having some sort of 'test' available as well as some visual signal to the driver that they are on 2 vs 1.

1 of the 2 aeromotives i removed worked fine for about 5 minutes then layed over so to speak more and more over the next 5 minutes until it made no fuel pressure at all. This one pump 'all or nothing' set up managed to cost the guy an engine just as well during a fun ford event. I was able to fund both new fuel pumps by selling the core of the bad pump plus its voltage regulator off the car

 

[TYHOGG]

Re: Twin in-tank pumps or A1000 external for LSx swap?

I have heard the sloch problem is much worse in the sy's than the ty's.

 

[Windedv6]

Re: Twin in-tank pumps or A1000 external for LSx swap?

I have been running the A1000 on my AWD since 2002 and have not had any issues. It is mounted on rubber stands and is fairly quiet. Mark (maxtor) listened to it a couple of weeks ago maybe he can compare it to his douple pumper regarding noise. I run my electricial system at 14 volts which maybe helps the life of it as we all know the low voltage is the kiss of death to a lot of auto electrical componets.

The twin turbo TY has the Areomotive Eliminator pump which is very noisy, and not recommended for continous street driving. I can barely hear it inside the truck, but it is loud standing outside by the rear. I don't hear it at all cruising around.

John

 

[JSM]

Re: Twin in-tank pumps or A1000 external for LSx swap?

Not sure if aeromotive changed design but when I pulled one apart I saw steel gears running against an aluminum housing.

I have a Weldon. It is somewhat loud, especially outside. My exhaust is just a tad louder so it doesn't seem to bother me. If I daily drove it it could.

 

[Windedv6]

Re: Twin in-tank pumps or A1000 external for LSx swap?

Not sure if aeromotive changed design but when I pulled one apart I saw steel gears running against an aluminum housing.

If machined correctly there is nothing wrong with that. The high end aluminum billet oil pumps have steel gears. The Peterson and SCP pumps are aluminum with steel gears. The vanes in our trans pumps are steel. Some of the cheaper fuel pumps use plastic gears. Ever take a our stock pump apart? I have not looked inside a Weldon. Isn't it a aluminum housing with steel gears?

John

 

[Maxtor]

Re: Twin in-tank pumps or A1000 external for LSx swap?

If I launch hard with less than 3/4 of a tank (Syclone) I risk starving my pumps. I have had it fall on its face with 1/2 tank before. Pumps are as far to the bottom as I could get them. I have a light on my dash wired to show me when the second pump is supposed to turn on, problem is I don't actually KNOW it truly is on without watching FP. I'm afraid by the time I see FP drop on my gauge it will be too late.

John's (WindedV6) A1000 on his AWD Ty is a little noisier than my twin in-tank pumps but still hard to hear over the exhaust. The pump on his ProTy sounds like it is large enough to water an 18 hole golf course .

Not to hijack the thread; but what other external pumps come highly recommended?

 

[NOJIMMY]

Re: Twin in-tank pumps or A1000 external for LSx swap?

Not to hijack the thread; but what other external pumps come highly recommended?

Magnaflow 300GPH, Mallory 110 or 250, Aeromotive 111-01l, Holley blue, Comp 140 or Barry Grant.

-Larry