sorry guys kinda new at this. anyway whay size injectors would i need to run 15psi max?

 

too vague. No turbo specs, no engine application, no "tech" = No answer.

 

1600cc injectors, minimum. And 3 walbro fuel pumps with a 1000lph in line pump.

 

like i said new at this. Anyway

lsvtec
skunk2intake
gsr cams
walb255 pump

 

oh really thanks chimmike your a real help.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93hatchy08 &raquo;</TD></TR><TR><TD CLASS="quote">oh really thanks chimmike your a real help.
</TD></TR></TABLE>

your question gave us none of the required information to determine an answer.

Read the FAQ's.

 

lsvtec
skunk2intake
gsr cams
walb255 pump
eagle rods
je pistons


t3t4 TURBO!

what size injectors do you think i should have? 750cc? bigger? smaller?

 

just to be safe I'd run 1000cc peak and hold rc injectors, but any 1000cc wil be fine. I'm thinking you might max out the duty on 750's

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by totsie7944 &raquo;</TD></TR><TR><TD CLASS="quote">just to be safe I'd run 1000cc peak and hold rc injectors, but any 1000cc wil be fine. I'm thinking you might max out the duty on 750's</TD></TR></TABLE>

15psi on a t3/t4, even 60 trim, isn't going to max out the duty cycle on 750cc injectors.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chimmike &raquo;</TD></TR><TR><TD CLASS="quote">

15psi on a t3/t4, even 60 trim, isn't going to max out the duty cycle on 750cc injectors. </TD></TR></TABLE>

x2... should be good on a 750cc and have room to grow.

 

thanks guys you have been more than helpfull. and chimmike thanks for comin around.

Oh one more question my budy has almost the same setup 450cc should be ok for 12 pounds. right?

 

again, it depends on turbo size.

if he's running a .57 trim t3/t4, those injectors will be maxed out before 11psi.

For a general rule of thumb, you want to tune for power, not boost pressure.

440s/450cc injectors will max out around 300whp. That's probably about 8-10psi on a .57 trim t3/t4. I'd run at least 550cc injectors or larger for 11psi on a .57 trim.

 

For god sake, just use an injectors calculator and save us the trouble

http://www.rceng.com/technical.aspx
http://www.witchhunter.com/injectorcalc1.php4