SCOOBY DOO
BASED CANADIAN PATRIOT!!
- Joined
- Feb 18, 2007
How fast can you go on a 255 LPH pump with race gas and 60's on a stock stroke 109 with good flowing heads and a 6262? Pump and injectors are both hotwired.
It depends on how much voltage you send to the pump and how high your base fuel pressure is.How fast can you go on a 255 LPH pump with race gas and 60's on a stock stroke 109 with good flowing heads and a 6262? Pump and injectors are both hotwired.
It depends on how much voltage you send to the pump and how high your base fuel pressure is.
Is this 15.1 volts observed on the Scanmaster? If so,you'll see more at the pump typically. This should supply a 500 hp motor with plenty of gasoline. If you want to make more power with the same pump and injectors,send more voltage to the pump,during WOT operation,and increase base pressure. As an added benefit,the extra pressure will atomize the fuel better as it leaves the injector nozzles.15.1 volts...and 43 PSI line off.
Is this 15.1 volts observed on the Scanmaster? If so,you'll see more at the pump typically. This should supply a 500 hp motor with plenty of gasoline. If you want to make more power with the same pump and injectors,send more voltage to the pump,during WOT operation,and increase base pressure. As an added benefit,the extra pressure will atomize the fuel better as it leaves the injector nozzles.
That reading comes from the Scanmaster. Your probably getting 16 to the pump.15.1 via PL at WOT.
That reading comes from the Scanmaster. Your probably getting 16 to the pump.
Your welcome. The most important thing you can do is monitor fuel pressure and a/f ratio. They mean everything. When you start to see pressure fall and a/f ratio lean out,from what it should be,you have a fuel delivery problem. If replacing the filter doesn't solve it,you have to send more voltage to the pump then raise the base pressure. If more voltage doesn't help,you need a bigger pump or a second one. You don't necessarily have to buy bigger fuel injectors to make more power. If you increase the volume of fuel supply to the injectors,you can raise the base pressure and flow more fuel volume through the same size injector nozzle..Thanks so much for your input.
A single large pump will overwhelm the fuel return line. For this reason I like running two pumps.The Red Armstrong double pumper flows a lot of fuel and has a long history of reliability. I would always buy more pump first and run at higher fuel pressure. Then get larger injectors if needed.The time in my sig is from last year...with alky at 28 PSI. I'm up here in Canada...so last winter I upgraded from a SLIC to a large FMIC...110 race gas with a matching 5.7 chip frpm Eric. I also handed my heads to my machinist...and he worked his magic on them. Last weekend I ran 7 flat at 102...on 23 PSI. If MPH is indicative of HP...then I;m making the same HP with 5 lbs less boost. Should I run dry on fuel after following your recommendations...would jumping to a larger injector be the best idea...or would you suggest a 340 LPH pump?