How much hp can a walbro 450 support?
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Joined: Jun 2014
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How much hp can a walbro 450 support? Trying to fig out what fuel pump to use for my whippled ly6. I was thinking a walbro 450, but @ 60 psi it only flows 323lph @ 12v or 381@13.5v. Will this be enough for 600rwhp? Using fast 65lb injectors.
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Not sure about just one but I'm running two with my Squash setup and 80# injectors. Did 720 on pump gas and 14#'s with my AFR pegging my wideband at 9:1 and was at 72% idc. Couldn't tell you for sure how rich it got but when I leaned it out a couple weeks later and did 743 at same boost and mid 10's afr I was at 65%. This is with a hobbs switch setup.
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I have a racetronix 340 set up with the the g7 sender for turbo buick. I would really like to make this into a dual pump set up . How hard is this? Really don't want to shell out another 379$ for the 450 set up and need to go bigger down the road.
I installed dual 450s in my g-body tank. Check out my build thread for some ideas.
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I check out your set up . Love your car. The racetronix 340x2 set up is 799$ I was hoping to make mine a dual set up a little cheaper than that lol. 800$ is a lot to pay for a pump, coupler, and some wiring .you can buy the twin 340 with the coupler and bracket for 249$ I'm hopeing I can retro this onto my sender
I've bought the dual pump mount and coupler before from racetronix to adapt two pumps to their single pump sender. I'm not sure if they still sell those parts seperately.
Are you planning on running e85? Why not just buy the walbro 450 pump and it'll easily max out your injectors and give you enough fuel for 550-600 rwhp on e85. Of course, like said in other posts, It'll support 800+ on gas, if you're not on e85. Then, you have a more reliable pump than the 255/340 and don't have to dick around with wiring. You're existing hotwire setup will work fine.
Are you planning on running e85? Why not just buy the walbro 450 pump and it'll easily max out your injectors and give you enough fuel for 550-600 rwhp on e85. Of course, like said in other posts, It'll support 800+ on gas, if you're not on e85. Then, you have a more reliable pump than the 255/340 and don't have to dick around with wiring. You're existing hotwire setup will work fine.
Joined: Mar 2002
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From: A Racetronix dealer near you...
We recommend a FM FPR with FI apps running 550RWHP+ to stabilize fuel pressure and extend HP support with smaller injectors.
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Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
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Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
Thread Starter
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My car is a g body . The pump I have now is g7RXP340MAN I would like to upgrade to a walbro 450 using your pump mount, pump, and grommet. I was told I would be better off selling my set up and buying the g7 450 set up. I'm wondering why this can't be done. I would rather buy a big enough pump instead of going the bap route. My plans are -8 split to -6 feeding both rails. -6 coming out of rails to reg, -6 return
Joined: Mar 2002
Posts: 2,032
Likes: 26
From: A Racetronix dealer near you...
My car is a g body . The pump I have now is g7RXP340MAN I would like to upgrade to a walbro 450 using your pump mount, pump, and grommet. I was told I would be better off selling my set up and buying the g7 450 set up. I'm wondering why this can't be done. I would rather buy a big enough pump instead of going the bap route. My plans are -8 split to -6 feeding both rails. -6 coming out of rails to reg, -6 return
The mount and electrical connection on your hanger are not compatible with the Walbro 450. So you have a choice... you can try to break the welds holding the pump mount, install a new DCSS pump mount, DCSS grommet, 450 pump, filter sock, feed tube, clamps and electrical connector. This will void the three year warranty on your hanger assembly.
or...
You can sell the hanger you have and purchase the FPS-G7W450EAN.
You can view the configuration of each hanger in our web store.
The G7 hangers are only available and supported through authorized Racetronix / Buick dealers. There are only a handful available for sale at this time.
We are making changes to the Buick product line so availability will be scarce to non-existent for a while.
__________________
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<