Really confused on what injectors to get
05-19-2009, 10:27 PM
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Really confused on what injectors to get Ok i have a 408 with a 246/254 cam, TFS 235cc heads, ported FAST 90MM intake. I will be throwing on up to a 200 shot of nitrous on either a wet kit or direct port. Ive been told that i need 42's and 60's by 2 different people and Ive been given 2 completely different opinions so Im really confused. What do you guys think would be best for my setup? Im looking for 550rwhp N/A.
05-19-2009, 11:29 PM
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Ok i have a 408 with a 246/254 cam, TFS 235cc heads, ported FAST 90MM intake. I will be throwing on up to a 200 shot of nitrous on either a wet kit or direct port. Ive been told that i need 42's and 60's by 2 different people and Ive been given 2 completely different opinions so Im really confused. What do you guys think would be best for my setup? Im looking for 550rwhp N/A.
Figure 625chp and go to the RC calculator on the sticky here.. 42 at 3 bar is the injector.. Telling him to put a 60 Siemens in IMO is way to big.. It flows 73lb/hr in a LS car and the 42 flows 50lbs. Why over inject an engine, now if you have a procharger than the 60 is the right number because of the increase in the BSFC,,
Rich
05-20-2009, 06:35 AM
#4
Listen to Rich. Him and Jon know injectors. If you over shoot the size it makes tuning more of a pain in the butt. WOT is easy but around town driveability is not as good.
Size them for the engine, if you are putting a wet shot on, it has its own fueling anyways so you don't need the oversized injector for that either.
Size them for the engine, if you are putting a wet shot on, it has its own fueling anyways so you don't need the oversized injector for that either.
05-20-2009, 09:26 PM
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DO REMEMBER PLEASE... the 255L/hr PUMP maxes out at a 50LB/HR injector... the fuel pump (255) cannot pump more fuel than a 50lb/injector.
SO, that means if you plan to go bigger or more power later, you will DEF want to go ahead and get a 340L/hr pump and pair it with those 42# injectors or even the 50LB injectors , IMO.
Check my fuel and injection sticky
let me know if I can help further
SO, that means if you plan to go bigger or more power later, you will DEF want to go ahead and get a 340L/hr pump and pair it with those 42# injectors or even the 50LB injectors , IMO.
Check my fuel and injection sticky
let me know if I can help further 