Hello I have questions regarding the stock fuel pump in a turbo environment

1. Is the stock 1991 CRX SiR fuel pump big enough to deliver at least 120 lb/hr?
2. Can anyone tell me if the 5th gen Civic VTi is similar to the CRX SiR's??

My calculations:
(taken from the info in sport compact magazine)
http://download.tripodnet.nl:81/REX_...g/08-turbo.jpg

Injector size=

expected hp: 240 @ the crank
BSFC= 0,55

expected hp x BSFC
------------------------
number of injectors

240x0,55= 132/4 = 33 lb/hr

I want to use Prelude VTEC injectors since they plug right in and deliver 310cc/min (29,52 lb/hr)

Fuel pump size=

injector size x number of injectors=

29,52 lb/hr x 4 = 120 lb/hr




[Modified by REX VT, 9:49 AM 2/6/2002]

 

im assuming youre referring to the 92-95 H22 injectors
which are rated at 345cc so that will change your calculations....

hth

 

Are you absolutely, without doubt, 100% sure?

This is also what I found in the 1992-1996 Prelude workshopmanual:

engine: F22a1, H23a1, H23a2

255-305Kpa = 2,55-3,05 kg/cm2

engine: F20a4, F22a2

245-285Kpa = 2,45-2,85 kg/cm2

Resistance= 5-7 Ohm

 

https://honda-tech.com/zerothread?id=125005

specifically H22si's comment,

and.
sgT confirmed this to me also...hth..


EDIT: btw fyi i have the 92-95 lude injectors too. theyre a nice cheap upgrade
as opposed to the RC injectors...
they're yet to be installed




[Modified by Giuseppe, 11:32 AM 2/6/2002]

 

mmm 345 cc is a little big .. or not?

Isn't it better to put more pressure onto the fuel rail and squeesh out max 40% extra fuel?

 

heres another link: https://honda-tech.com/zerothread?id=121009

it really depends on your setup: pump, fmu..etc etc..
i cant give u a definite response:but i have a 1st gen b16a
and will be using the above mentioned injectors for my
application...hth

 

330cc/min with 43 psi pressure.. howmuch psi on stock b16a1 pump? Can't find it anywhere in CRX SiR workshopmanual