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Fuel pump volume
Well, I had been putting off installing my fuel, vacuum and nitrous pressure gauges. I was bored today after playing plumber so I installed the gauge pod and gauges. The fuel and nitrous gauges are MrGasket electronic models made by Autometer. The vacuum gauge is analog. Okay, so here is the story... I took the truck out for a drive and at idle it shows that I have 54 PSI and when I go WOT the fuel pressure drops to about 51 PSI and then climbs back up to 54 PSI. I have an Fbody fuel rail that is not vacuum referenced and my fuel pressure is regulated by a Corvette internally regulated fuel filter that returns excess fuel to the tank. I turned on the Nitrous fuel solenoid and did a WOT run with the Nitrous Oxide supply valve valve turned off and the fuel pressure dropped to 34 PSI! :eek: I guess what they say about a Walbro pump not being able to support 550 HP true, that or I have one of the chinese fake knock-off pumps that I've heard about rather than a real Walbro pump. I have a Racetronix hotwire kit on my fuel pump so I doubt that I have a voltage/power supply problem.
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Well im glad to hear you finally got the gauges put in..about time.j/k
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So are the walbros okay for moderate power? Now I'm worried about mine....
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There are generic Walbro types out there. Where did you buy your's? Mine came from Ebay and I don't know for sure if it's genuine or not.
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WOW...glad to see you got the gauges hooked up...grimlins like to eat motors when you dont suspect anythings wrong
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Allen has said many times I 255 and hotwire kit will support one.. But I was told you need an Inline Pusher Pump like the 044 that you have is what it takes to hold up to 600RWHP...
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I got mine from nolimitmotorsports.net
The GSS340M-400-835
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Check that the Walbro symbol is embossed in the casing and that the casing is polished, not rough. I'd email them and ask if they are 100% sure the pump is genuine and not a knock-off. Since they do have a large selection of different pumps that they sell, I would assume the pump you have is genuine Walbro. Those selling copies usually only have a couple different part numbers.
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Yeah it has the walbro symbol and is polished.