anyone try this fuel pump aproach?
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single digit dreamer
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From: omaha ne
anyone try this fuel pump aproach? this is probably an old idea but it was shared with me and seems like a prety good idea to me. i am trying understand all this fuel pump stuff and decide on the best aproach for me.
problems.. an inline pump is noisy. there seems to be a brief drop in presure if you only run it when you need it. and it seems like if you got that really big one like the 420L/hr one that speed inc sells that it could over whelm your return line and the presure might creep up at idle.
i don't have the option to do the racetronics set up for my truck and they told me it would be a bad idea to mess with the intake set up. so how about this?
get the big inline pump, use a BIG resistor to make it run at 1/2 speed, should be alot quieter, shouldn't have the presure dip when it switches over to full power, shouldn't overwhelm the return line since it will only be running full blast when you actualy need the fuel. just jump across the resistor using a hobbs switch and a relay when you need the extra fuel.
this guy told me he has done it on 3 cars now and it has worked great. soo is this an old idea or are there problems with it?
problems.. an inline pump is noisy. there seems to be a brief drop in presure if you only run it when you need it. and it seems like if you got that really big one like the 420L/hr one that speed inc sells that it could over whelm your return line and the presure might creep up at idle.
i don't have the option to do the racetronics set up for my truck and they told me it would be a bad idea to mess with the intake set up. so how about this?
get the big inline pump, use a BIG resistor to make it run at 1/2 speed, should be alot quieter, shouldn't have the presure dip when it switches over to full power, shouldn't overwhelm the return line since it will only be running full blast when you actualy need the fuel. just jump across the resistor using a hobbs switch and a relay when you need the extra fuel.
this guy told me he has done it on 3 cars now and it has worked great. soo is this an old idea or are there problems with it?
Re: anyone try this fuel pump aproach? Have you considered a step down box? We have used the Barry Grant unit a few times and it worked out very nice.
it has a cruising mode which runs the system @ like 8 volts, then it has the 2nd mode which runs off a toggle or WOT switch, which gives the pump full system voltage.
I think Aeromotive sells one as well.
Tom
ww.ls1speed.com
it has a cruising mode which runs the system @ like 8 volts, then it has the 2nd mode which runs off a toggle or WOT switch, which gives the pump full system voltage.
I think Aeromotive sells one as well.
Tom
ww.ls1speed.com
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From: Deep in the seedy underworld of Koonerville
Re: anyone try this fuel pump aproach? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 99GMC Can:
<strong>If you use a Hobbs switch to power the pump, make sure it can handle the current draw. Same goes for the step down box I guess</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">If you use a hobbs switch you should wire it to ground a relay that sends power to the pump. That way your not sending pump power through the hobbs switch. This is the way GWP sets up the Aeromotive inline. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
John
<strong>If you use a Hobbs switch to power the pump, make sure it can handle the current draw. Same goes for the step down box I guess</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">If you use a hobbs switch you should wire it to ground a relay that sends power to the pump. That way your not sending pump power through the hobbs switch. This is the way GWP sets up the Aeromotive inline. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
John
Re: anyone try this fuel pump aproach? why not just wire an inlinepump or a second in tank pump to cut on only at WOT.. low tech but effective. im not into slowing stuff down <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
what is you intank pump now? walbro gss340? if not then why not?
what is you intank pump now? walbro gss340? if not then why not?
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From: Raleigh, NC
Re: anyone try this fuel pump aproach? GWP's way of in-lining the right Aeromotive pump works. You will miss the Fuel pressure dip if you blink... it's that quick. And it's not like it actually loses pressure... for a split second, when you hit WOT (beginning of boost), it drops. Think about it. It's not like we see an instantaneous 10 or 20 PSI of boost.
Running the pump constantly at lower speed seems a good idea on the face of it. But, if mine kicks on ONLY when I go WOT and someone elses is running all the time, which is bound to last longer, as well. I've already debunked the theory about it wearing out the pump to pump thru it. Aeromotive says that's not true.
The pump GWP sends has the type of orificing that there is a path for fuel flow when it is not running. All pumps aren't like that and could stop in position that would inhibit flow. Not THIS Aeromotive pump.
Also, those who say because it is in series, it can't pump more than the inline pump is supplying are full of it. I've seen what happens when my fuse to the Aeromotive blew because the shop left the power wire where it burned on the header and shorted when I made hard take-offs. <img border="0" alt="[whiner]" title="" src="graemlins/gr_cry.gif" /> It dropped all the way back to 20 PSI fuel pressure. When I fixed that and replaced the fuse, VOILA! I had full fuel pressure again! That HAS to be the in-line pump doing it's job. <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" />
I don't know what WILL happen in the future, I just know, for the past year, this setup has worked for me and continues to. I just need BIGGER injectors, now!
I hope this alternative opinion helps you with your decision. Good luck!
Running the pump constantly at lower speed seems a good idea on the face of it. But, if mine kicks on ONLY when I go WOT and someone elses is running all the time, which is bound to last longer, as well. I've already debunked the theory about it wearing out the pump to pump thru it. Aeromotive says that's not true.
The pump GWP sends has the type of orificing that there is a path for fuel flow when it is not running. All pumps aren't like that and could stop in position that would inhibit flow. Not THIS Aeromotive pump.
Also, those who say because it is in series, it can't pump more than the inline pump is supplying are full of it. I've seen what happens when my fuse to the Aeromotive blew because the shop left the power wire where it burned on the header and shorted when I made hard take-offs. <img border="0" alt="[whiner]" title="" src="graemlins/gr_cry.gif" /> It dropped all the way back to 20 PSI fuel pressure. When I fixed that and replaced the fuse, VOILA! I had full fuel pressure again! That HAS to be the in-line pump doing it's job. <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" />
I don't know what WILL happen in the future, I just know, for the past year, this setup has worked for me and continues to. I just need BIGGER injectors, now!
I hope this alternative opinion helps you with your decision. Good luck!
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Verdad Gallardo Thread Starter
single digit dreamer
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From: omaha ne
Re: anyone try this fuel pump aproach? i have the stock intank still, racetronics told me i don't want to touch the intank set up, something to do with the way it captures the fuel. so that leaves me with an inline of some kind.
so what i am hearing is that i would feel no hesatation when the pump kicked on, i do have instant boost. if the drop in fuel presure is that slight than that is how i will do it. just turn it on at wot or under boost.
what pump are you guys talking about? there are quite a few inlines to choose from, i would like a prety big one but it will need to be the feed thru type. and who is GWP?
thanks for all the help
so what i am hearing is that i would feel no hesatation when the pump kicked on, i do have instant boost. if the drop in fuel presure is that slight than that is how i will do it. just turn it on at wot or under boost.
what pump are you guys talking about? there are quite a few inlines to choose from, i would like a prety big one but it will need to be the feed thru type. and who is GWP?
thanks for all the help
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Posts: 3,048
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From: Raleigh, NC
Re: anyone try this fuel pump aproach? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by parish8:
<strong>i have the stock intank still, racetronics told me i don't want to touch the intank set up, something to do with the way it captures the fuel. so that leaves me with an inline of some kind.
so what i am hearing is that i would feel no hesatation when the pump kicked on, i do have instant boost. if the drop in fuel presure is that slight than that is how i will do it. just turn it on at wot or under boost.
what pump are you guys talking about? there are quite a few inlines to choose from, i would like a prety big one but it will need to be the feed thru type. and who is GWP?
thanks for all the help</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Golden West Performance. 303-346-5232
Ask for Kenny and he can describe the pump you need and why. It is an Aeromotive that will handle nearly 1000 HP FI. (420 LPH) It's capacity hasn't killed my system yet. When my boost kicks in, the computer is able to maintain fuel pressure with the extra fuel this thing delivers. And believe me, this 422 is hungry at WOT! <img border="0" alt="[chug]" title="" src="graemlins/gr_chug.gif" />
They ARE working on some advanced options for people with bigger fuel requirements.
<strong>i have the stock intank still, racetronics told me i don't want to touch the intank set up, something to do with the way it captures the fuel. so that leaves me with an inline of some kind.
so what i am hearing is that i would feel no hesatation when the pump kicked on, i do have instant boost. if the drop in fuel presure is that slight than that is how i will do it. just turn it on at wot or under boost.
what pump are you guys talking about? there are quite a few inlines to choose from, i would like a prety big one but it will need to be the feed thru type. and who is GWP?
thanks for all the help</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Golden West Performance. 303-346-5232
Ask for Kenny and he can describe the pump you need and why. It is an Aeromotive that will handle nearly 1000 HP FI. (420 LPH) It's capacity hasn't killed my system yet. When my boost kicks in, the computer is able to maintain fuel pressure with the extra fuel this thing delivers. And believe me, this 422 is hungry at WOT! <img border="0" alt="[chug]" title="" src="graemlins/gr_chug.gif" />
They ARE working on some advanced options for people with bigger fuel requirements.
