NEW INJECTORS VS RISING RATE FUEL REG Options

[swerve]

Chasing a little help from you guys as all the answers I am getting from "professionals" are all over the place.

I am around 80% complete (just need FMIC and pipes) of having all the parts required to turbo my st204 (thanks to all here of course) and am trying to see if I may be able to save a couple of hundred $$$ (NOOOOOOO!!! DON"T CHEAP OUT, yells the crowd).

I recently removed an electric supercharger that was throwing in around 4.5psi reducing to 2 in the higher rev range. Part of my supercharger setup was installing a rising rate fuel reg to "squeeze" the extra fuel required through the injectors.

I will be running a ct26 at 6psi at the time being. Question is, does anyone know what my limit may be in regards to boost before I will have to replace the injectors? Will the standard injectors and the rising rate reg be OK at 6 psi.

I know a couple of hundred $$$ saved doesn't seam a lot but it is when you buy the best of everything else and funds a running low, those $$$ are the difference between boost in 2 weeks and boost in 6 weeks.

[scothaniel]

These are banjo bolts:


Its the way the stock fuel system creates a 90 degree turn. There are 2 of them on a 3S motor - both on the fuel line between the filter and the rail. All your fuel has to go through that tiny hole in the center of the bolt - major restriction! Replace them with proper AN fittings and you'll be amazed at how much fuel you'll get to the injectors. I found this pic from a Stealh/3000GT site, which has some of the same pieces that I'm using.



Using the numbers from that pic, my cars fuel system goes:

(1) -> (2) -> (5) -> (8) -> (10) -> (8) -> (2) -> 1

(5) is used to add a fuel pressure gauge, which I highly recommend.

This post has been edited by scothaniel: Mar 24, 2006 - 11:28 PM