How much RWHP can a Walbro 255 inline pump support?
Thread Starter
Joined: Nov 2001
Posts: 572
Likes: 2
From: North Florida
How much RWHP can a Walbro 255 inline pump support? I have a stock motor with a bolt-on setup + wet kit, and I was wondering how much power can this pump support? 500rwhp? 550? 600? Thanks in advance guys! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
- Matt
- Matt
TECH Senior Member
Joined: Nov 2001
Posts: 9,246
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From: Troy, AL
Re: How much RWHP can a Walbro 255 inline pump support? After the addition of an inline pump the rest of the fuel system (specifically the dampner setup on the fuel rail) starts to become the restriction.
I have somewhere in the neighborhood of 530 RWHP. To support this I have gutted the fuel rail behind the dampner, installed a 340 intank pump, a 255 inline pump, ported the fuel filter end, and installed a Kenny Belle Boost-a-Pump.
Sound like alot of fuel being pumped, right? Two big pumps and the voltage to them set at about 18 instead of the normal 13 or so. Does this sound like overkill? It's not. Why? It's taking all of this just to force enough fuel through the stock fuel rail setup. If I go with anymore power than this (and I soon will) I will surely have to upgrade the fuel rails.
<small>[ May 20, 2002, 01:25 PM: Message edited by: Colonel ]</small>
I have somewhere in the neighborhood of 530 RWHP. To support this I have gutted the fuel rail behind the dampner, installed a 340 intank pump, a 255 inline pump, ported the fuel filter end, and installed a Kenny Belle Boost-a-Pump.
Sound like alot of fuel being pumped, right? Two big pumps and the voltage to them set at about 18 instead of the normal 13 or so. Does this sound like overkill? It's not. Why? It's taking all of this just to force enough fuel through the stock fuel rail setup. If I go with anymore power than this (and I soon will) I will surely have to upgrade the fuel rails.
<small>[ May 20, 2002, 01:25 PM: Message edited by: Colonel ]</small>
Re: How much RWHP can a Walbro 255 inline pump support? Hey Steve, whats up dude <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
i miss it there in alabama, specially that track that let ya get away with stuff. the one round here is ghetto <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" />
anyway...with a 150 shot dry what inline fuel pump do you recommend? im probly bout 385ish rwhp NA w/ a hammer cam and stock heads. (Yea i know i said i was done modding when i was there LOL)
inline fuel pump should be enough right? i got SVO 30# injectors and use 98 octane unleaded fuel.
Jerry
i miss it there in alabama, specially that track that let ya get away with stuff. the one round here is ghetto <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" />
anyway...with a 150 shot dry what inline fuel pump do you recommend? im probly bout 385ish rwhp NA w/ a hammer cam and stock heads. (Yea i know i said i was done modding when i was there LOL)
inline fuel pump should be enough right? i got SVO 30# injectors and use 98 octane unleaded fuel.
Jerry
Thread Starter
Joined: Nov 2001
Posts: 572
Likes: 2
From: North Florida
Re: How much RWHP can a Walbro 255 inline pump support? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Colonel:
<strong>After the addition of an inline pump the rest of the fuel system (specifically the dampner setup on the fuel rail) starts to become the restriction.
I have somewhere in the neighborhood of 530 RWHP. To support this I have gutted the fuel rail behind the dampner, installed a 340 intank pump, a 255 inline pump, ported the fuel filter end, and installed a Kenny Belle Boost-a-Pump.
Sound like alot of fuel being pumped, right? Two big pumps and the voltage to them set at about 18 instead of the normal 13 or so. Does this sound like overkill? It's not. Why? It's taking all of this just to force enough fuel through the stock fuel rail setup. If I go with anymore power than this (and I soon will) I will surely have to upgrade the fuel rails.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Does anyone make a fuel rail kit for our cars yet? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
<strong>After the addition of an inline pump the rest of the fuel system (specifically the dampner setup on the fuel rail) starts to become the restriction.
I have somewhere in the neighborhood of 530 RWHP. To support this I have gutted the fuel rail behind the dampner, installed a 340 intank pump, a 255 inline pump, ported the fuel filter end, and installed a Kenny Belle Boost-a-Pump.
Sound like alot of fuel being pumped, right? Two big pumps and the voltage to them set at about 18 instead of the normal 13 or so. Does this sound like overkill? It's not. Why? It's taking all of this just to force enough fuel through the stock fuel rail setup. If I go with anymore power than this (and I soon will) I will surely have to upgrade the fuel rails.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Does anyone make a fuel rail kit for our cars yet? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
Thread Starter
Joined: Nov 2001
Posts: 572
Likes: 2
From: North Florida
Re: How much RWHP can a Walbro 255 inline pump support? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Colonel:
<strong>After the addition of an inline pump the rest of the fuel system (specifically the dampner setup on the fuel rail) starts to become the restriction.
I have somewhere in the neighborhood of 530 RWHP. To support this I have gutted the fuel rail behind the dampner, installed a 340 intank pump, a 255 inline pump, ported the fuel filter end, and installed a Kenny Belle Boost-a-Pump.
Sound like alot of fuel being pumped, right? Two big pumps and the voltage to them set at about 18 instead of the normal 13 or so. Does this sound like overkill? It's not. Why? It's taking all of this just to force enough fuel through the stock fuel rail setup. If I go with anymore power than this (and I soon will) I will surely have to upgrade the fuel rails.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Does anyone make a fuel rail kit for our cars yet? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
<strong>After the addition of an inline pump the rest of the fuel system (specifically the dampner setup on the fuel rail) starts to become the restriction.
I have somewhere in the neighborhood of 530 RWHP. To support this I have gutted the fuel rail behind the dampner, installed a 340 intank pump, a 255 inline pump, ported the fuel filter end, and installed a Kenny Belle Boost-a-Pump.
Sound like alot of fuel being pumped, right? Two big pumps and the voltage to them set at about 18 instead of the normal 13 or so. Does this sound like overkill? It's not. Why? It's taking all of this just to force enough fuel through the stock fuel rail setup. If I go with anymore power than this (and I soon will) I will surely have to upgrade the fuel rails.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Does anyone make a fuel rail kit for our cars yet? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
Re: How much RWHP can a Walbro 255 inline pump support? yes look at www.ls1speed.com <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> or you can just click on the sponser list they are speedinc <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
