hey guys i have a series 4 rx7 im looking to make between 300hp and 350hp so im upgrading the fuel system, i have been looking at the sard, tomei, turbosmart and malpassi fpr and have noticed they have different fittings -6an,-8n some have 2 fittings some have 3, wondering whether one better suits a rotary, on ausrotary a guy has a malpassi high rise rate reg for sale, would this be adequate

 

aeromotive A-1000

stock is still fine for 300-350WHP however, depending on your boost level.

 

The regulators with 3 fittings are better suited for a parallel fuel system like this:
http://fc3spro.com/TECH/MODS/FUEL/pararail.jpg

The stock system is an inline setup, in which a regulator with 2 fittings will work fine. If you use one with 3 fittings on an inline setup then you will need to plug one of the fittings.

Although I have an aerospace bias, I think the Aeromotive and SX regulators are the best. I especially like the added dampening function of their diaphragms.

Rule of thumb for fuel injection:
5/16" OD Tube (AN -5 fittings) for up to 300bhp
3/8" OD Tube (AN -6 fittings) for up to 500bhp
1/2" OD Tube (AN -8 fittings) for up to 1000bhp

The Aeromotive catalog also has a power planner section to help you choose a fuel system for a given hp range.

Also, most regulators are intended to use an ORB (O-Ring Boss) fitting as opposed to a flared AN or JIC fitting, so verify the required fitting before buying these expensive parts.

 

thanks very much guys very helpful

 

does this still apply if i have a surge tank and an external pump plus internal

 

+1, this one is very popular

http://www.amazon.com/Aeromotive-131...ies/B000CFSL1I

 

I have the Aeromotive A-1000.

 

may i ask why? hopefully darren didn't sell you on this too...

 

nah im in australia, don't know darren, because its a drift car, so i dont want it to detonate, i want this car to be reliable

 

technically it should still apply, since the differences are minor just that aftermarket RRFPRs are better suited for higher boost applications, say beyond 14-15psi and much higher volume fuel pumps.