Thread: For the people saying that the stock fuel pump is only good to 200hp...

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2008-09-05 16:26:59

#21

Forced Compression Online/offline status of Forced Compression is unknown

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Originally Posted by XxToKeSxX

Nice... at least your basing it on first hand and not what you heard. First hand experience is important. I ran the stock pump on my t25 setup and never went past 10lbs for principle. I changed to the walbro and a fpr because I knew I was changing to a larger injector setup at 4bar. I didn't do any logging, just did it for safekeeping.

everything i know is first hand and you would be surprised as to how many myths are on the forum

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2008-09-05 18:30:26

#22

oneslose-r Online/offline status of oneslose-r is unknown

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Originally Posted by Johnny
Yall are wrong lol. Ive run mine up to 20psi and it did it without a hiccup at all. The stock fuel pump can supply enough fuel to support at least 300whp without a problem at all. Most likely it could do more but I didnt get a chance to install a huge turbo yet

can i get an amen

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2008-09-05 19:33:52

#23

jen36

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my friends g20 has stock fuel pump and he runs 10 pounds all day long on his bluebird

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Originally Posted by Cliff

Pete and Jensen should be banned.....

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2008-09-07 02:27:16

#24

Tjones381

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nice dude! IC IC

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2008-09-07 04:08:00

#25

Johnny wangwang Online/offline status of Johnny wangwang is unknown

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Originally Posted by RedDragun

I don't think you can run 4 bar fuel pressure on the stock fuel pump.

I never actually got the chance to run 4 bar on my car But I have ran like 3.5bar at idle and the pump did just fine going up the RPM range. That was only at like 7lbs though. Anyone trying to run 4 bar on the stock pump is just dumb lol. Thats where the "Walbros are only $100" should come in lol. So I think we can safely say that if your under 300whp then your stock fuel pump is just fine. Replace it if its old. Thats about it.

Forced Comp: out of curiousity when is the maf maxxed out? When it touches 5 volts? Never actually looked. Highest Ive seen on my Z32 Maf is 4.05...

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2008-09-07 04:13:44

#26

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Originally Posted by Johnny
I never actually got the chance to run 4 bar on my car But I have ran like 3.5bar at idle and the pump did just fine going up the RPM range. That was only at like 7lbs though. Anyone trying to run 4 bar on the stock pump is just dumb lol. Thats where the "Walbros are only $100" should come in lol. So I think we can safely say that if your under 300whp then your stock fuel pump is just fine. Replace it if its old. Thats about it.

Forced Comp: out of curiousity when is the maf maxxed out? When it touches 5 volts? Never actually looked. Highest Ive seen on my Z32 Maf is 4.05...

pretty much 5v maybe a lil more, just watch your air flows as long as your timing is conservative you dont have much to worry about!

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2008-09-08 21:37:09

#27

SinisterSntra91 Online/offline status of SinisterSntra91 is unknown

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I have a question cant fuel pumps weaken over time? That might be a good reason to switch to a walbro. When I changed to a walbro fuel pump on my B13 it felt like it made a difference, even tho I have no solid evidence it did. Or could be that the fuel pump was originally feeding a GA16, but I thought they were the same pump....

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2008-09-08 21:51:49

#28

GT2871RBLUBIRD Online/offline status of GT2871RBLUBIRD is unknown

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i wouldnt run the risk esp when playing with fuel, its not that the stock pump cant handle the power, but it wasnt designed with a turbo application in mind, there are many different benifiits of a walbro fuel pump, one would be like ben said the higher pressure.

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2008-09-08 23:44:42

#29

jen36

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speaking of stock pumps is the GA the same as the SR???

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