Best Aftermarket Fuel Pump?

Post by **Zushi** » Wed Dec 10, 2003 12:04 pm

What do you guys think is the best aftermarket fuel pump for an SR20det? Thinking about either a T28 or a T3/T4. Any suggestions?

Post by **BuudWeizErr** » Wed Dec 10, 2003 12:04 pm

Just get walbro for s13 or tomei for s14.

You won't need an external or inline fuel pump until you make at least 400HP. And you can probably survive on one of those pumps for past 400HP.

Although if you are going to make more than 300HP, I suggest you rewire your fuel pump, but it's not a requirement.

Post by **Zushi** » Wed Dec 10, 2003 12:04 pm

how about aftermarket fuel injectors?

Website · Post by **quiksilvia** » Wed Dec 10, 2003 12:04 pm

walbro on ebay, brand new $100 shipped, there are always some on there

Post by **Zushi** » Wed Dec 10, 2003 12:04 pm

what would be a good mod to do to with about 300 dollars...after i get a turbo

Post by **tincan** » Wed Dec 10, 2003 12:04 pm

Buudweizerr what do you mean by rewire the fuel pump. What do you have to do and why do you do it? I have the walbro and will be installing it soon. Thanks

Website · Post by **quiksilvia** » Wed Dec 10, 2003 12:04 pm

im guessing he means that u should rewire to make sure that the wires are good and wont fail when u need fuel the most. but if u just have a walbro, u dont need to rewire anything

Post by **S13240** » Wed Dec 10, 2003 12:04 pm

Zushi wrote:what would be a good mod to do to with about 300 dollars...after i get a turbo

AFC? Add another $100 for injectors? FPR? Gauges?

Post by **BuudWeizErr** » Wed Dec 10, 2003 12:04 pm

quiksilvia wrote:im guessing he means that u should rewire to make sure that the wires are good and wont fail when u need fuel the most. but if u just have a walbro, u dont need to rewire anything

WRONG. And on both counts.

The wiring to the fuel pump is too small to support a lot of horsepower, theoretically, it can cause you to lean out if not enough power is making it to the fuel pump. I'll admit, it probably won't happen, but I'd rather make certain it doesn't. All you need to do is go to radio shack, get a 12V ignition relay and run a direct 12v (not too small of wiring, but not huge of course) all the way back to the fuel pump off the battery or some other constant 12v source. Then run a new ground somewhere on the chassis, and you use the positive wire that used to be for the fuel pump, as the ignition signal, then run power off the relay to the pump.

So basically, instead of your stock wiring powering the pump, you use it for the remote relay, and you run a dedicated power line to your fuel pump.

The guy who told me about it does wiring and high HP aftermarket tuning for a very well respected shop, so I believe him, and it is such a simple idea.

And you should rewire it, REGARDLESS of what pump you have if you are going for higher HP numbers. None of this "you don't need to rewire if you have a walbro" crap. If the line fails, your motor is going to be the one hurting, regardless of what fuel pump it has in the tank.

Website · Post by **quiksilvia** » Wed Dec 10, 2003 12:04 pm

how is that not what i said? "to make sure that the wires are good and wont fail when u need fuel the most" me"The wiring to the fuel pump is too small to support a lot of horsepower, theoretically, it can cause you to lean out if not enough power is making it to the fuel pump" buudwhere is the difference?and what i meant was, if u r just swapping in a walbro, u dont need to rewire anything, jsut hook it up, sure if u have high hp then rewire, but otherwise you dont HAVE to. but thanks for caring buud

Post by **tincan** » Wed Dec 10, 2003 12:04 pm

thanks budd that is a pretty cool idea and should be easy to do.

Post by **BuudWeizErr** » Wed Dec 10, 2003 12:04 pm

tincan wrote:thanks budd that is a pretty cool idea and should be easy to do.

NP. If you are building a car for a lot of power, you should probably have already taken most of your interior out at least once, that will make things a lot easier. I don't know where you'd want to run the wiring, but I know there is at least one large group of wires running along the right side of the unibody, you could run it there.

quiksilvia wrote:how is that not what i said? "to make sure that the wires are good and wont fail when u need fuel the most" me"The wiring to the fuel pump is too small to support a lot of horsepower, theoretically, it can cause you to lean out if not enough power is making it to the fuel pump" buudwhere is the difference?and what i meant was, if u r just swapping in a walbro, u dont need to rewire anything, jsut hook it up, sure if u have high hp then rewire, but otherwise you dont HAVE to. but thanks for caring buud

Wires do not FAIL unless they are exposed to extreme condition constantly or were improperly hooked up. Since that harness was put in my a Nissan tech, I doubt it's just going to up and fail one day. However, wire signals do attenuate or experience degradation. That is what will kill it. Your generalizations do nothing. Even though you are correct, you are still wrong. If the question is "why does my car overheat" and your answer is "because it's not being cooled correctly;" while that is a true answer, it is still not the correct one.

Website · Post by **quiksilvia** » Wed Dec 10, 2003 12:04 pm

well thanks, ill get right on that sir. my next reply will be a+!

Post by **GTS4-R** » Wed Dec 10, 2003 12:04 pm

thats the first I've ever heard of "re-wiring" the fuel pump....sounds like a good idea but I don't see it being a necessity....how often does a fuel pump or the wiring fail? And how about your main harness and coilpacks what if that wiring fails? should we re-"re-wire" our entire cars? just being a smart*ss.....anywho i might as well do it.....couldn't hurt

Post by **BuudWeizErr** » Wed Dec 10, 2003 12:04 pm

93Niss240 wrote:thats the first I've ever heard of "re-wiring" the fuel pump....sounds like a good idea but I don't see it being a necessity....how often does a fuel pump or the wiring fail? And how about your main harness and coilpacks what if that wiring fails? should we re-"re-wire" our entire cars? just being a smart*ss.....anywho i might as well do it.....couldn't hurt

BuudWeizErr wrote:The guy who told me about it does wiring and high HP aftermarket tuning for a very well respected shop, so I believe him, and it is such a simple idea.

I'd say he is in a better position to recommend better wiring than you. And about bigger wires for the coilpacks, wouldn't it be plausible that the inline spark increase units and aftermarket coilpacks have bigger wiring to transmit a slightly stronger spark? Don't companies that make spark plug wires generally increase the diameter of the plug?

The fact of the matter is that the power wire for the fuel pump is a little too small and the next size gauge wire would probably be more reliable.

Post by **GTS4-R** » Wed Dec 10, 2003 12:04 pm

i was kidding about the harness and coilpacks.....but I'm gonna give the fuel pump thing a try since I'm goin for moderate power this spring....

Post by **hokiruu** » Wed Dec 10, 2003 12:04 pm

Denso and Tomei are very good. Walbro are very common, some say they are flimsy but I've never heard of someone actually breaking one. I personally have a Tomei for my s14240/S14SR.

Post by **180fan** » Wed Dec 10, 2003 12:04 pm

Don't forget about Bosch. They make pumps that are good for 450 and 600 hp respectively for high flow pumps.

Post by **hokiruu** » Wed Dec 10, 2003 12:04 pm

Yes indeed! quite pricey though.

Best Aftermarket Fuel Pump?

Best Aftermarket Fuel Pump?

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