BryanM.

iTrader: (1)

Long story short, my project car I am trying to get back on the road used to have a turbo'd B16 and has a Walbro 255.

Any problems using this for a bone stock B16A? This one works and I don't want to buy another pump if I don't have to.

Thanks guys.



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THC07

its ok to keep on. not gonna hurt anything

EGFLASH

wat he said^

shwanC

iTrader: (3)

Yeah, it would be fine, but the stock FPR might not be able to return enough fuel. Personally I would add an AEM adjustable FPR with the "255HP" return fitting.

THC07

good observation!~ but it will will return enough, im positive

raidacaipo

I would definitely consider an adjustable fuel pressure regulator. You car will be smelling like fuel and you will be wasting alot of gas. Not to mention youll be running rich. I remember doing this with my stock jdm gsr and I hated it.. Got a blox adjustable FPR and adjusted it to the proper specs.. felt much better afterwards

BryanM.

iTrader: (1)

I was afraid of this.

I figured the stock FPR would still do it's job and the extra flow wouldn't matter. Is that wrong?



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BryanM.

iTrader: (1)

That's what I was thinking.



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RICKSAUTOMOTIVE

damn i seen an AEM rail in the box still on craigslist today for 100 bucks. its in the los angeles section in the antelope valley (ant) sub-group and in the car parts listings. i was thinking of getting it to have laying around for a build LOL (whenever the next one happens LOL)

sohctodohc

having the 255 in there will increase the fuel pressure, mechanically increasing the size of your injectors making your car run rich!

so no it wont be fine to just "leave it in there"

BryanM.

iTrader: (1)

So will an adjustable FPR prevent this?



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1993-eg1

my afr's are 14.5 unless i go wot and then they are 11.5 with a stock fpr

raidacaipo

wow have you been reading any of these posts? your just asking the same question over and over again.. I already stated in my first post that not running an adjustable FPR will make your car run rich. Others have said this as well. READ!

BryanM.

iTrader: (1)

I have read responses and they are mixed. A couple people said it's fine to use it with my stock set up, one guy said I might need an AFPR, another said I'll run rich and gave no solution, one person (you) said I absolutely need an AFPR, another guy is talking about buying a fuel rail for a future project and another is vaguely talking about A/F ratios. See my confusion?

I just want to be certain an AFPR is the way to go. I don't think I asked the same question that many times.

Thanks for your input BTW.


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Del Namco Solo

Whoever said that a 255 will make the car smell like gas and waste gas, your full of ****, because there is a such thing as a return line.......... Any unused gas, aka doesn't get into the injector, will be forced back into the tank, hence why there are 2 lines leading to your tank, one is to feed, other for extra return.

I ran a 255 in my del sol without a regulator, no gas smell, and no problems with acceleration or gas mileage. only noticeable difference was that at higher rpms it felt like it was able to supply it better, making very high end rpm movement faster......

EDIT: your car can run lean from a bad fuel pump, but not rich because of a higher LPH fuel pump. rich/lean as far as "fuel pump" is controlled by the ecu and injectors, the fuel pump is just supplying the engine with what it can use, and extra gas is pushed back into the tank....

raidacaipo

For someone with a stock motor and thinks that their stock engine performed better after they ditched Shell and Chevron for a cheaper alternative gas, your one to talk.. (yes I read your threads)

anyways.. to the OP if you dont believe me just try it out for yourself.

sohctodohc

you my friend are an idiot!

you need to learn how injectors work, running a larger fuel pump with a factory FPR will increase the base fuel pressure, when you increase fuel pressure you are mechanically making the size of your injectors larger

when you do this your ecu doesnt know this so your ecu is keeping the injectors spray time measured in milliseconds the same.

now with a small injector and large injector spraying for 100ms(milliseconds) whats going to happen?

the larger of the 2 will have sprayed more fuel!

and to again answer the question for the OP, you need to figure out what the factory fuel pressure is suppose to be, then figure out what your at.

some aftermarket FPR might be able to get you close or you could hunt down a used oem fuel pump for much cheaper and be done with it


/end

raidacaipo

^^^ well said

RICKSAUTOMOTIVE

my bad for confusing you. the guy in post4 brought up the AEM rail and i seen one today. i figured if you wanted to check it out and get it i would post the info how to locate the one i seen. just put a stock pump in bro. like the wallbro and have used the one you have even with no issues. but i dont think you will have an issue if you have a good fuel pressure regulator. the regulator should reduce the pressure to the correct pressure. but if youre not sure just go stock with your fuel pump.

BryanM.

iTrader: (1)

A stock fuel pump it is. Thanks everyone.


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Del Namco Solo

Okay for one, Shell and Chevron, at least right where I live, something is wrong with their gas because it does cause my car to bog down and hesitate, yet with BP (serviced by carrol fuel) doesn't have that problem.

And yes I have a d16, and yes I had a 255lph fuel pump, and I had absolutely no problem, nor a "gassy" type smell to my car. But sadly my buddy who lent me the pump needed it back for his project car, so I'm back to the stock pump. Still haven't had any problems with my car.