i am just about to be done with my B18c1 turbo build- i am running T3T4 6-8psi- i have aftermarket fuel rail and B@M adjustable fuel pressure regulator- currently stock fuel pump and filter- any suggestions on Injector size i should use, and safe fuel pressure to start with?

 

walbro fuel pump, 440RC injectors.

 

This all depends on your whp goals

 

just dont want to run lean- would rather run a little fat- to be on the safe side- it is for a everyday street car that has a lot of get up an go- i was either leaning toward the 440/or 450 dsms or 750 RC

 

unless you plan on doing internals, 550's would be great. loose the b&m reg and go with a stocker. it never reads correctly, and all the ones i have put on, i have taken off because they dont work.

basically if you dont plan on growing, 550's but if you want room to grow, look at 750's.

 

i have internal work is anyone running 750s with only 8psi?


Modified by j-D-m at 2:22 PM 7/26/2006

 

get rc 750. reliable, good start up and if you want to make more hp you already have the injectors.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mtber &raquo;</TD></TR><TR><TD CLASS="quote">This all depends on your whp goals </TD></TR></TABLE>

psi doesnt really matter, different turbos make different power. the 440's are only gonna get you to about 300whp. you mentioned you have some internals done. i would say 550's for about 350whp or you might as well grab some 750's so you have room to grow. why do you only wanna run 8psi on a built motor anyways?

EDIT: also, what are you gonna be using to control them. most of today's ems systems have no problem idling 1000cc injectors so you shouldnt have a problem whatever size you choose.

 

if you have built internals...why the hell are you only running low boost??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 22psicrx &raquo;</TD></TR><TR><TD CLASS="quote">get rc 750. reliable, good start up and if you want to make more hp you already have the injectors.</TD></TR></TABLE>

 

cause i dont want to blow **** up-i know my rods crank and pistons can handle what ever i throw at em, its the sleeves i am worried about- i only have a 8psi spring- i may be getting a 12psi- depending on how the 8lbs feels. i think i am going to go with the 750's - its just hard to choose right now cause i dont know exactly hopw much HP to expect to calculate what size injectors i should use- but i keep doing the equations and i think i need something more like 750s

 

you should get some 550 to 750 injectors. (they can tuned them so you wont get too much fuel) you should also get a 255 walbro fuel pump and put the stock fuel pressure regulator on it and you will be good to go after you get it tuned