i had a walbro 255 in my S4 TII and it took a **** and blew my engine..so my builder said go with the supra TT pump its very reliable and pumps just as much as the walbro...anybody have expiriance's or opinions on this pump?

 

its used extensivly by the 3rd gen guys.
how much are they?
and what are you trying to fuel injectorwise?

 

Surprised your Whinebro fell out, those things are usually very reliable..

 

Nippon/Denso Supra TT Pumps.

When it still works at 100k+ mileage TT Supras, and never having any issues.
Says something about how good they are, they cost twice as much as the Walbro
but you can set it and forget it.

 

They flow much more than the 255lph
It's a Toyota unit so you know it will last longer than the car
It's expensive

 

i only paid 250 from the toyota dealer i didnt think that was too expensive for a really reliable pump...how many liter per hour do they pump?

 

im running 850 prim and 1600 sec

 

i know you really stand by these pumps from what ive read in other threads but my tuner/engine builder says he has had about a 20% failure rate with these things... they seem to either wear out fast and dont give enough fuel pressure under boost or they lock up compleatly..i guess it just depends how lucky you are some must be built shitty and others are good

 

They do?

 

The supra flows 280 lpm. I paid $220 shipped.
Thanks Robert

 

lol so do they pump more or not

 

Wow, those look pretty good. If my fuel pump fails me, I'll go ahead and get one of those. they look pretty awesome.

 

Look at the graph posted,it's pretty much self explanatory. What the graph doesn't show is the supra pump is a bit of a "current" hog compared to the "Whinebro".

 

Walbro or a Bosch 044

If you're planning on passing 500whp, get an aeromotive a-1000 or run twin walbro's or bosch's - but the twin setup sucks alot of voltage.

I honestly would like to see proof of 20% failure rate...is that 20% of 1000? or 20% of 5? Alot of people just don't like them because the think they're cheap (when really, they're just inexpensive), or they find them loud (which is total bullshit, if you can hear your walbro when you're car is running you need better exhaust!! )

 

yes.

http://www.gadgetonline.com/FuelPump.htm

I don't know where you got your graph from but this guy^^ sent his pump to RC engineering and it seems to flow MORE than the 255LPH that Walboro claims.

As long as you have enough current going to it it will outperform the Walboro.

 

I agree one hundred percent as far as what was said above.
There are people that have used the Bosch and Cosmo Fuel Pumps as well as the Supra fuel pumps with great success. Classicauto toke the words out of my mouth. The only way to go I think is do it right the first time and go with the Aeromotive Pump that’s what a lot of the big boys are running. All the fast rotaries I see are using them and they are great quality pump. As far as the Walboro is concerned the appearance and price of that pump never convinced me as well. I’m currently running an 300ZX twin turbo fuel pump on my S5 Turbo, or at least that's what the guy that sold me the car told me it had. That pump is loud and it sucks gas like there’s no tomorrow.
I don’t know if it’s my imagination, but the 300ZX twin turbo pump wastes a lot more gas than the stock pump by far. I’m glad this thread came up, because I was debating if I should stay with this pump or go with a Supra or Bosch pump.
If I do decide to go all out in the future and go with a bigger turbo and ems and all the goodies, I wont even think twice I will go with Aeromotive for sure.
Also I haven seen guys using Fd pumps on there Turbo-II's, but obviously running conservative numbers and not high horsepower applications

 

i went to instal the supra pump and it seems i may need to trim off some of the metal hose that connects to the top of the pump..or get a differnt rubber mount for underneth the pump cause it sits to high and accually touches the metal feed line..any ideas?

 

Source:

http://www.stealth316.com/2-fuelpumpguide.htm

You are right, supra pumps outflow walbros AT 16VOLTS.. What FC makes 16 volts at the fuel pump?

I guess one persons experience is more fact then scientific evidence...

 

Hmm.. Someone must know something I dont, because at 490 hp, my injectors were only 73% duty cycle, and my base pressure is somewhere in the 32PSI range.

 

What exactly did you expect? An upgraded pump will push more fuel through the injectors. That's how it works...

 

I know NZ your right about that. I did realize that before I ever had a car with an upgraded fuel pump, that its going to get less mpg than with a stock pump.
However I’m just amazed that this pump sucks gas like there’s no tomorrow compared to the stock pump, and obviously my mpg on the stock pump was a lot better. This leaves me with one question Nz, should I leave the 300ZX twin turbo pump in there or run an Fd or the stock pump? My mods 91 stock block, stock turbo, full Blitz exhaust with down pipe, HKS intake, colder plugs, Msd spark plug wires, stock intercooler. Oh the injectors before I forget are stock, I’m thinking of swapping them out for Greedy 720's in the secondary. Obviously I don’t want to run lean that’s the name of the game. What do you think Nz? Any feedback is greatly appreciated. Thank you.

 

NEVAR!!

was that with AI though? But by making more then 500 I meant that - not just clearing it. And for me, approaching those kinds of numbers (well over 500) I wouldn't want to be watching to see if I run out of fuel pump at the top. I'd rather have too much, thus my recommendation.

 

Is that with no aux. alcohal injection? I have a hard time believing a single walbro would get you up there on gas alone and doubtful on that duty cycle unless maybe you are using all 1600cc injectors.

 

Nope,

1680 secs, 720 primaries. And I do spray alchy, but at such a miniscule amount that it wouldn't account for much more then a few percent. Fact is, at higher pressures (where it counts) the Walbro out flows the Supra pump.

I am just here presenting the facts as tested by reputable companies (RC Engineering, etc..). I dont get kick-backs from the Walbro company, so whether or not you buy one is of little consequence to me.

A point I will concede though, is that its better to have too much fuel then not enough!

 

The stock fuel system (FPR, ECU) can't compensate for increases in pressure caused by a pump upgrade. You need to either bring the pressure down with an adjustable FPR, retune the fuel map with a fuel controller or replace the ECU with a programable one. If you don't like those options, then the FD pump is a good mild upgrade that can get away with no adjustments.

Do those mods really justify colder plugs?