what size injectors do i need? and do i need a better fuel pump?
this is what i have...


Electronics
msd ignition
just ordered hondata s200

Block
sleeved balanced and blueprinted block
11.5:1 comp wiesco pistons 88mm crower pro billet rods
machine lightened balanced flywheel -6 pounds
eliminated balancing shafts

Head
euro-r im
stage2 crower cams, valves,springs,retainers
aem cai


exhaust
test pipe, greddy cat back
just got rmf header ordered

misc.
skunk2 cam gears, aem pulleys

 

Go with a Walbro pump and RC 440 injectors. I know 440's are a little big, but it will give your tuner a little more flexability. Just my opinion!!!!!!!!

 

 

440's is overkill. plenty of fuel with 310's

 

The price between 440's and 310's is like $10. Might as well go 440's because there really isnt such thing as too big and plus 440's will be easier to sell because NA and FI guys use them.

 

440's and a walbro 255 get my vote

 

why would someone want to run 310s....when the stock injectors are flowing more than that??????

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v4lu3s &raquo;</TD></TR><TR><TD CLASS="quote">why would someone want to run 310s....when the stock injectors are flowing more than that??????</TD></TR></TABLE>

WHAT???????

 

um no. stock injectors are 240's

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSRCRXsi &raquo;</TD></TR><TR><TD CLASS="quote">um no. stock injectors are 240's</TD></TR></TABLE>

maybe on a civic or teg....
but i ahve never seen a B or D series block that has balance shafts or can fit an 88mm bore. also teh fact that hte posters name is grimLUDE i would assume he has a prelude. add to that the fact he is putting a Euro-r Manifold on the engine....i would assume he has an h22a. being as its an h22a...obd1 is 345cc, at 37ish psi, making for 320cc of flow. or if its obd2 they are 290cc at 50ish psi for 320cc of flow.

so as i said again...why would you put 320 cc injectors into an engine when teh stock ones flow more than that?????

 

well if he has the 290's then he would still benefit from going to 310's or 320's its still a bigger injector reguardless.

 

290cc at 50ish psi is 320cc.
the rating of an injectors is listed at 43psi of fuel pressure, and the 290cc obd2 prelude injector does NOT run at 43 psi stock it runs at 50ish.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaHead211 &raquo;</TD></TR><TR><TD CLASS="quote">440's and a walbro 255 get my vote</TD></TR></TABLE>

x2

Although you probably dont need the pump, its cheap and not hard to install.

 

With the low pressure walbro pump do you need an aftermarket fuel pressure regulator?

 

No