B20 EK

i was hoping to get my b20/vtec motor finished. i have everthing i need except for a clutch and injectors. a friend of mine is trying to get rid of his rc 440's.my set-up is a b20 block: GE HD sleeves, je 9to1 comp pistons, crower rods, knife edged and balanced crank, arp headstuds. head: 2001 GSR head, JG intake manifold, skunk2 cam gears, ported and polised, skunk2 Ti valve springs and retainers, new oem vavles, and ITR cams. Everything has been blueprinted and balanced. i am also using a full-race kit with a t3/67 turbo and an si tranny with a quaife my question is how well will 440cc inj.'s do? what psi will they max out at? how much power? i know i need bigger but can i use these for the time being untill i can get bigger injectors?

b18bturbo

with all the money you spent on the other parts just do it right the first time and get some larger injectors like 880cc the 440cc if you use them will limit you to a little over 300 at about 50-60psi of fuel pressure

B20 EK

you are right, i know that i shold just do it right. i probably will anyway, i was just wondering what it would do if i got a little impatient

B20 EK

bump

b16ahybrid

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18bturbo &raquo;</TD></TR><TR><TD CLASS="quote">with all the money you spent on the other parts just do it right the first time and get some larger injectors like 880cc the 440cc if you use them will limit you to a little over 300 at about 50-60psi of fuel pressure</TD></TR></TABLE>


Unless he's giving them to you and your getting a free tune I wouldn't waste your time or money. Or if you plan to run less then 300whp.

AROD

what about if he uses race gas c116 , and 50-60psi pressure. would it reach 350hp

1316130057

At a max of 100% Duty Cycle a 440cc injector will support 336hp with a .55 BSFC. To calculate the hp amount on your own, the formula is (lbs/hr of injectors*number of injectors*duty cycle percentage)/BSFC/100. Not for nothing, but your setup seems to far overshoot what a 440cc injector will be able to deliver.

Just as a rule of thumb, most street tuned cars that run slightly rich AFR's will have about a .55-.6 BSFC. The lower you can get your BSFC, the more power you will be able to make on the same fuel pressures and components. BTW, to convert cc to lbs/min, simply divide cc's by 10.5. Enjoy.

1.8T: I got your IM, but since I'm technically a "trial user" I was unable to respond. To answer your question:

Yes..but because of the lower BSFC achievable with a fuel with a lower-than-pump specific gravity like 116. The lower your BSFC, the more hp your fuel system will be able to support. Keep in mind that the engine will not MAKE more power. Jusat be CAPABLE of making more.


Modified by 1316130057 at 4:07 AM 5/5/2004

b16ahybrid

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1316130057 &raquo;</TD></TR><TR><TD CLASS="quote">At a max of 100% Duty Cycle a 440cc injector will support 336hp with a .55 BSFC. To calculate the hp amount on your own, the formula is (lbs/hr of injectors*number of injectors*duty cycle percentage)/BSFC/100. Not for nothing, but your setup seems to far overshoot what a 440cc injector will be able to deliver.

Just as a rule of thumb, most street tuned cars that run slightly rich AFR's will have about a .55-.6 BSFC. The lower you can get your BSFC, the more power you will be able to make on the same fuel pressures and components. BTW, to convert cc to lbs/min, simply divide cc's by 10.5. Enjoy.

1.8T:

Yes..but because of the lower BSFC achievable with a fuel with a lower-than-pump specific gravity like 116. The lower your BSFC, the more hp your fuel system will be able to support. Keep in mind that the engine will not MAKE more power. Jusat be CAPABLE of making more.</TD></TR></TABLE>

Nicely put.

B20 EK

thanks for everyones help. youre right im just going to get the bigger injectors. i have been told to use 72lb/hr msd injectors by geoff. anyone know a place with good prices on them?


also, can i use the msd SCI ignition with the msd distributor cap and blaster coil? would this ignition work or is it too weak?

b16ahybrid

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B20 EK &raquo;</TD></TR><TR><TD CLASS="quote">thanks for everyones help. youre right im just going to get the bigger injectors. i have been told to use 72lb/hr msd injectors by geoff. anyone know a place with good prices on them?


also, can i use the msd SCI ignition with the msd distributor cap and blaster coil? would this ignition work or is it too weak?</TD></TR></TABLE>

Stock ignition will be fine, but yeah you can use those.