GSE980

So Im took my car in after the third break in I just installed the

S300 p06 4bar map
800cc injectors stock FPR and uprgraded fuel rail

The guy at the shop told me I should change my fuel pump to the Nippon Denso because the Walboro has been know to give out and blow motors under heavy loads....

He charges me 395 but Im lookin at the edelbrook inline fuel pumps and they are only 140.

I feel like Im getting ripped they are doing other work now so the fuel pump is on hold the part can still be taken back. Actually I havent recieved the part yet so I can tell them no..

What pump should I go with
for a 300whp tune
b18c1

95civhb

I may be mistaken, but isn't the nippon going to be a stock fuel pump?

wilham320

iTrader: (1)

Walboro pump is fine for much more than 300... probably 9 out of 10 stock fuel line cars run the walboro 255.... he just want to make more money off you.

Tony the Tiger

The Denso he's referring to is probably a Supra TT Denso pump... They go for about $240 brand new. It's not a straight forward install for a Honda because the pump itself draws a lot of amps and the stock wiring woudn't allow it.

TheShodan

iTrader: (14)

Tell me about it. It works, but it wasn't as easy an install as the walboro..

GSE980

yes it is the supra fuel pump...but does it provide more flow howmuch better??
so this isnt nessecary.... why would they pick that fuel pump it doesnt make sense

the walborowill be fine. is thereanythingbetter for 300+ hp setup better then the walboro

Ls_dx

iTrader: (5)

W255 is the cats pajammas.

GSE980

how much hp are the 255'sgood for the reason i ask isbecause i am doinga tuneat 10 psi and then 18 psi. I dont want this thing to take a dump on me

extralargenog

iTrader: (1)

Rick in the house

Turbo-LS

iTrader: (4)

Dude walbros arent known to fail, a walbro 255hp will get you up to 600whp range if im not mistaken. for what your trying to do even a walbro 255 standard will get the job done.

GSE980

SWEET YEAH i told the guy to can it He tried to play a pitty story on me saying his pump gave up after 10 miles. I told him that sucks and said oh well

96 GSR-T

Walbro 255hp's definately dont just randomly fail, and they are good to 600whp and some get more out of them. I run 2 of them in my car, it is more than suffecient for your 300whp build.

Personally I wouldnt trust whoever is trying to sell you that pump, its a good pump but on your situation the Walbro is the better pump.

0project dc2

iTrader: (1)

maybe if you're foolin aroudn with 400-500 WHP

once you get in to the mid 500's youll start seeing the fuel pressures drop like a rock.


overt ime, youll see walboros give out. ask me how i know

my supra uses twin walboros and i've since junked them after 3K miles cuz they cant keep up with the pressure.


a local buddy of mine goes through triple walboro's every season because they cant keep up with the fuel pressures and throws them in the trash.


since then i've done dual denso twin turbo pumps


Go ask tony1, since everyone response tony's honesty and integrity when it comes to things like these. He himself will tell you that walboros are terribly inconsistent.

EARLdaSQUIRREL

i personally run a walbro 255hp , but my roommate is on his 2nd one now after his first one just quit working on him out of nowhere

Turbo-LS

iTrader: (4)

well i mean on a drag application i see but on a decent street setup then theyre good. personally im looking forward to adding a bosch 044 inline with my walbro 255 intank. now the bosch is a bad a*s pump

96 GSR-T

Odd I had the same 255hp in my car from 02 to 07 and never had an issue with it, I changed it for obvious reasons.

I work on heavy equipment alot and I still use the same 7yr old Walbro to transfer Diesel from one tank to another, I just hardwire it to a car battery and it does the trick.

0project dc2

iTrader: (1)

well .. i wouldn't be putting a 7 yo walboro as a transfer pump as any sort of merit qualifying job. Try running the walboros at 70+ fuel pressures and see what happens.


Although your integra might be a decent testimate. im guessing approx 23 psi of boost ?

96 GSR-T

Yea my old pump info was rather pointless, but people were stating that they are "failing" or "giving up" and I was just stating my personal experiences with them. I am sure you have had your hands on more Walbro's than I have ever seen, so your opinion matters more. However I will never be worried about running a Walbro.

Yep 23psi..... on an Intank and an Inline with 50psi Base, 70+psi total with no dropoff in pressure showing on my gauge, but I am way out of Injector at that power level. I have them wired with 10ga to independent relays and fuses right off the battery. Have a friend that was trapping in the mid 140's using E85 and a single 255hp on a completely stock fuel system, but that pump was apparently a "freak"

0project dc2

iTrader: (1)

in-tank WITH an inline .. IMO not applicable in this situation

Turbo-LS

iTrader: (4)

agreed

96 GSR-T

In what situation? The OP asked if he should use a Walbro for 300whp, people come in here and say Walbro's are known to fail yet probably 7/8 of the people that have a turbo setup on this site have a Walbro sitting in their tank.

Since I run 2 of them, according to some testimonies in here either one of my pumps is subject to fail soon which confuses me because the friend with the single 255hp making damn near 600whp on corn put over 10k miles on that pump and 40+ passes and it didnt fail on him either, and he was over 50psi base running over 20psi of boost, and in the brief time I have been on this site I cant recall a Walbro failure thread..........

Do you think its possible that the people that are having failures bought bootleg Walbro's?

Tony the Tiger

There is a lot of gray area in terms of deciding which pump is reliable... If you run the Walbro with room to spare, they are pretty reliable pumps considering that about 90% of all the cars out there run them anyway.

Whenever they are abused from excessive pressures, they usually fail depending on how the car is driven. I'd usually get into the habit of oversizing the injectors anyway to keep the peak fuel pressures on the low side. The dual walbros in my Supra are doing great, and a little trade off would be running 1300cc injectors for 1000 WHP. For other setups, I run extra injector setups (8-injector setups) so I get tons of flow from the injectors. It is indeed a lot of injector for that power level, but I managed to keep peak fuel pressures well under 70 PSI.

GSE980

well with my 800cc injectors that shouldnt put to much of a strain on the pump

darqnez

I know this is back from the dead but I have a bit of information that explains why Walbros sometime just croak out of nowhere, they are Gerotor type pumps which are designed to have a constant voltage all of the time and also to be used in a return fuel system normally, lost of Honda/Acura, and certain year Mustangs amongst others have gone returnless and utilize pulse width modulation to vary the spead of the pump. These cars come with a (Normally Denso) turbine style pump that is made to be used in a PWM situation.

Running a Gerotor pump in a PWM environment leads to pump failure, I went through 3 255's on my RSX and didn't know why, also whats astounding to me is that everyone sells them as replacements in returnless turbine style systems and they are not meant for it and can fail. I say can because the 3rd one i got in my RSX lasted 2 years and was still in teh car when i traded it in. The Mustang guys learned this same lesson when they went returnless for a few years as well, random 255 failures. The stock pumps in returnless systems are always turbine style.

So my opinion is that Walbros are very reliable but not when used in a variable speed environment which is known to kill them.

The last but of info I have is that in testing the gss342 pressure release port "cracks" at 65lb'ish so that's why you see the sudden pressure drop at the high horse power marks. Some people actually tap this port down and then resale the pump as a "modded" 255 for $100 more.