12 replies to this topic

[GSR]

Hey guys, what in-tank pump is good for up to 400kw at the wheels? I know people are making around 300kw on E85 with walbro 255. Would Aeromotive 340lph be sufficient enough? Or is Walbro 460 only other option?

 

Looking forward to your thoughts

 

Peter

[Evo-00x]

I'm using a Walbro 460 in my fuel tank. Look in my Rides thread for info on the install into a GSR/EVO AWD fuel tank with pics.

Man, the thing pumps out fuel like a water hose! No chance in hell you will max it at 400kw atw as long as you provide good voltage to it and bigger fuel lines.

I know people using twin pumps to push fuel through - and they need to because they need more oomph to push fuel through the oem smaller diameter fuel lines (like a thin straw).

But fit fuel hose with even just a small diameter increase, then the fuel pump doesn't have to struggle as much to push more fuel through as the force/pressure required to push it is has reduced (bigger straw).

Im sure there will be several different opinions on the matter.

But from personal testing, all I'm going to say on the matter is that when I took my fuel rail hose off and cranked the engine over, it would have filled a can of bake beans in 2 seconds easy!

Oh, Im making 330kw atw on 30psi on 98 pump. Not E85, but Im sure it'll handle it

AND IT IS MUCH QUIETER THAN A WALBRO 255!!!

Edited by EVO-00X, 10 June 2014 - 10:02 AM.

[DOUGMO]

yep, 460 is your only option for a single pump intank, 400kw would be close to maxing out on e85 though

[GSR]

Thanks for the great info EVO-00X, I've saved all your pics from the pump install
I guess walbro 460 it is then is it safe to get them from ebay? particular seller that can be trusted?

 

thanks guys

[Evo-00x]

I got mine from EBay seller Auto_wholesale_aust.

The kit is labelled TIA485-2. As long as you look for a "E85" model Walbro and the words "GENUINE" and "Money Back Guarantee", you'll be right.

Mine came in a white box with the part number and Made In USA sticker on the outside.

The pump is also printed with the words TI Automotove and part F90000267.

 

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[GSR]

I love how informative you are! I've ordered one from the same seller, thanks heaps!!

[evopwr]

400kW @ the wheels = 536hp

25% AWD drivetrain loss = 715hp crank

 

Using this:

 

http://fuelinjectorc...flow-calculator

 

90% duty @ E85 = 1630 cc/min injectors.

 

1630 x 4 x 60 / 1000 = 390 L/hr

[leadfoot]

i'd probably recomend an 80% duty on injectors

[DOUGMO]

yep, I was running 1650cc injectors and was at 87% duty at 385kw@ wheels, now moved up to 2433cc

[evo-gsr]

You'll need a fuel tanker to follow you round the track now George!

[DOUGMO]

lol, I wish I did that many laps for that to be the case mate

[jack be nimble]

There is a voltage increaser thing that will overdrive the fuel pump. I think it feeds 18v into it.
I havent followed it up yet so I have no further knowledge as yet.
Tho pumps flow less as pressure increases. If you run 30psi your pump will be putting out 73.5psi (or something like that)

[Evo-00x]

DOUGMO, on 12 Jun 2014 - 7:30 PM, said:

yep, I was running 1650cc injectors and was at 87% duty at 385kw@ wheels, now moved up to 2433cc

 

George is running a 2.3 stroker engine too btw guys