fuel regulator choices
06-20-11, 07:00 PM
#1
Brewster
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fuel regulator choices
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
06-20-11, 08:54 PM
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Rotorhead
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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.
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.
06-21-11, 06:02 AM
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Brewster
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06-22-11, 06:40 AM
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Brewster
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