What size fuel injectors?
06-17-2008, 08:19 AM
#23
4th Gear Member
Join Date: Jan 2008
Location: yuma, az
Posts: 1,252
RE: What size fuel injectors?
i did have the chambers worked and as for the dish on the pistons and cant remember off the top of my head, id have to check out my order form from dss. they do have more dish than the stock ones.
06-17-2008, 03:26 PM
#25
6th Gear Member
Join Date: May 2006
Location: Ohio
Posts: 6,448
RE: What size fuel injectors?
50lbs injectors will be more then enough. 500bhp on a supercharged only calls for a 48lbs injector which isnt available so 50 would be best.
48lbs would be for a 500hp engine with the BSFC of .65 (which is higher then what yours will be) and at 40psi. yours would be .55 BFSC for a supercharged 4.6l which would only require 40lbs injectors. But better to be safe then sorry. Oh these are all at 90% duty cycle
48lbs would be for a 500hp engine with the BSFC of .65 (which is higher then what yours will be) and at 40psi. yours would be .55 BFSC for a supercharged 4.6l which would only require 40lbs injectors. But better to be safe then sorry. Oh these are all at 90% duty cycle
06-17-2008, 04:27 PM
#27
6th Gear Member
Join Date: May 2006
Location: Ohio
Posts: 6,448
RE: What size fuel injectors?
LOL yeah I'm all screwed up today. Long day and doing the math is cooking my brain.
500rwhp of 575bhp requires 45lbs injectors. 52 lbs injectors (which is what I think they sell for our engines) can support 585rwhp at 40psi with 90% duty cycle. Now I am pretty sure that a 97 cobra is return style fuel system. If you get an adjustable regulator and set the pressure to 60psi the 52lbs injectors will act like 64 lbs injectors which will support 660 rwhp and 42 lbs injectors will act like 52lbs injectors which will support the above. If using a returnless system you are stuck with upgrading injectors instead of pressure because the computer will adjust the pulse with for the higher pressure (damn ford). Glad I'm going return style.
500rwhp of 575bhp requires 45lbs injectors. 52 lbs injectors (which is what I think they sell for our engines) can support 585rwhp at 40psi with 90% duty cycle. Now I am pretty sure that a 97 cobra is return style fuel system. If you get an adjustable regulator and set the pressure to 60psi the 52lbs injectors will act like 64 lbs injectors which will support 660 rwhp and 42 lbs injectors will act like 52lbs injectors which will support the above. If using a returnless system you are stuck with upgrading injectors instead of pressure because the computer will adjust the pulse with for the higher pressure (damn ford). Glad I'm going return style.
06-17-2008, 05:15 PM
#30
6th Gear Member
Join Date: Nov 2004
Location: Tennessee
Posts: 7,797
RE: What size fuel injectors?
ORIGINAL: oxfordgt
Lope at idle does not mean large LSA. That is only in a NA cam. A blower cam gets it lope for the duration. A stage 3 blower cam should only have around 530 lift. Blower cams dont need lift just duration.
OP what blower are you running.
Lope at idle does not mean large LSA. That is only in a NA cam. A blower cam gets it lope for the duration. A stage 3 blower cam should only have around 530 lift. Blower cams dont need lift just duration.
OP what blower are you running.
62804-2
http://www.crower.com/cat/domestic/f...amshafts.shtml