Can "green top" 42lb/hr support 500rwhp FI?
10-27-2010, 09:29 AM
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Can "green top" 42lb/hr support 500rwhp FI? Looking to get some input on what's required to support 500rwhp via forced induction (procharger). I've been reading a lot of tech and just want to run this by you guys. I've calculated my injector needs using the following formula:
(rwhp*BSFC)/(# injectors * duty)
and I get
(500*0.6)/(8*0,8)= 46.9 lb/hr
I really like the price and availability of the Ford Motorsports "green tops" which are rated at 42 lb/hr @ 40psi. I have read that in the higher pressure LS1 fuel system, they flow closer to 50-52psi. Does anyone on here have actual experience with these to verify HP capacity? Should green tops be enough for my future system or should I spend the extra hundered or two to get some 60 lb/hr? I'm also using 80% duty in my calculation which is pretty generous.
I know that everyone's going to say go with bigger injectors because I'll want more horsepower down the line. But lets just focus on 500hp for now, and whether or not they will be adequate with a fair saftey margin. Any input is greatly appreciated!
(rwhp*BSFC)/(# injectors * duty)
and I get
(500*0.6)/(8*0,8)= 46.9 lb/hr
I really like the price and availability of the Ford Motorsports "green tops" which are rated at 42 lb/hr @ 40psi. I have read that in the higher pressure LS1 fuel system, they flow closer to 50-52psi. Does anyone on here have actual experience with these to verify HP capacity? Should green tops be enough for my future system or should I spend the extra hundered or two to get some 60 lb/hr? I'm also using 80% duty in my calculation which is pretty generous.
I know that everyone's going to say go with bigger injectors because I'll want more horsepower down the line. But lets just focus on 500hp for now, and whether or not they will be adequate with a fair saftey margin. Any input is greatly appreciated!
10-27-2010, 10:58 AM
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I just finished my procharger setup,(haven't tuned it yet) n I went w 60's n twin Walbro 255's intank just to be on the safe sid. I just didn't want my fuel system being a limiting factor on rwhp IMO
10-27-2010, 03:20 PM
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Well I swapped my cam out for a blower cam n went w a single plane intake n . i don't have a set number I wanna make, if I make 550rwhp ill be happy. I've been told I'll make between that n 600rwhp but my fuel system will come into play after 550 so that's w a went alil better w the fuel system to see what we can get out if it
