I am now down to the fuel delivery of my S4 TII FB(se) project. I have read here and there about Walbro, Mallory, holley, carter etc.etc. I had to spend a good bit of my fuel pump money on Family related issues and was wondering if the stock GSLSE fuel pump would work? Also some of the readings in the fc group stated the Walbro caused engine failure(cant have that). If the stock is not the best option, could I use another Stock external fuel pump that would provide me the power ranges needed to feed the engine?


In addition I plan of running a kill switch between the fuel resistor relay and the fuel pump to help with the flooding problems i have read about. Any information would help.

 

never heard anything bad about walbro. thats what i bought when i was planning on turboing my car. i dont think the stock will pump enough. i would go with a walbro.

 

you need to search more. Alot of people on this forum don't trust walbro pumps. To be fair, I came from Taurus SHO's and everybody there ran walbros and loved them.

To answer the OP's question, bosch 044, no contest (except maybe a supra/denso). flows more than a walbro 255, more reliable. check ebay and scour the earth till you find one for 100-150.

for a quick fix, check out ebay Australia. I love the outback, everything is cheaper and faster there.

 

What HP range is your engine going to be producing?

The SE fuel pump flows more than any of the stock TII applications from the factory.

 

i had a holley red and the motor took a crap on me.... now i'm going with the carter fuel pump...heard it was more reliable...

 

The motor is a stock 87 TII with no mods(187hp), straight out of the car into my SE. This is what I had read somewhere and I saved it to my favorites but it was on my sisters PC (she is in GA. I am in NC ).

 

The issue with Walbro is that people are getting Chinese knockoffs and don't know it. Most of the time the suppliers don't realize/don't care if they are knockoffs. Buy from a reputable supplier that knows where they get their pumps from, and you'll have no problems with them.

 

apparently i was wrong on both accounts. but in my defense, when i was doing my research for fule pumps is was about 5 years ago. and im really only familiar with gs/gsl stock fuel pumps.

 

I will check this as well. Thanks.

 

whitey85mtu :
Buy from a reputable supplier that knows where they get their pumps from, and you'll have no problems with them.[/QUOTE]

I am assuming you have one if so where did you get yours?

 

The Carter pumps are nice and not too expensive, I just dont know wish one to get based on fuel pressure and flow.

 

+1
I bought a carter for my rotary 12a starlet and so far I am loving it.

 

carter pumps are for carburetor applications and not suitable for this. Same with holley. you need flow under pressure.

 

The stock SE fuel pump puts out more than the stock TII pump so go ahead and use that. The biggest reason people run a fuel pump kill switch is they aren't smart enough or are too lazy to take out the injectors and have them serviced.

 

Sounds good to me. I believe it was a post that you replied to in which I read that. Thanks for the help as well and the project is going great by the way. I can hardly wait to get here on the road.

 

Without beating a dead horse here . . . most fuel pumps were designed for some OEM application -- like a Porsche 911 Turbo (Bosch 044), Dodge Viper (Walbro), etc. Because the OEMs demand very high quality levels (six sigma), these pumps are very good and very reliable when they're used in the intended application. Problems crop up when the pumps are used in an unintended manner, some might say abused. Unusually high / low voltage, excessive pressure requirements due to high baseline fuel pressure and high boost, improper filtering before the pump, elimination of the check valve after the pump (which will allow contaminants to flow back into the pump), etc.

So . . . if I wanted to be sure my pump was very reliable in a turbocharged application, I would use a pump that was designed for a turbocharged application and install it properly. I don't know how reliable the OEM Mazda pumps are (I imagine they're very good), but the Bosch 044 is considered by many to be the best performance pump available.

 

They die when they dont win races and death has no feelings. So beat away knowledge is never dead for me. I've read that to and checked out this pump(B044s') not cheap, not too expensive. My issue right now is, the doe to get the car runnings(got a family and way to many bills). With this pump I would need an adjustable FPR w/gauge and a split box/Y split (one in two out feed). Thats easily $300-$400.00.

Thanks by the way for the backing of what others have shared and really believe. When the time comes to upgrade and it will soon just not right now. The Bosch is the pump of choice.

 

i went with the walbro 255..it worked great until i popped my motor..rear housing ..dried up water seal and apex failure.