Copyright 2004-2023
Ron's Fuel Injection Systems, Tucson AZ





There reasons are many to choose alcohol over racing gasoline for your race engine.  Firstly, alcohol burns more slowly so it doesn’t build as much engine heat each run and at the same time building more power than gasoline.  This is very important to extending the life of your engine and also makes cooling the car between rounds much easier in todays round robin bracket racing.  Alcohol is less flammable than gasoline and safer to handle and is also significantly cheaper at the time of purchase.  Most importantly, alcohol is a more stable fuel for bracket racing due to its high oxygen content.  Simply put, this makes it less prone in reacting to atmospheric changes than gasoline throughout a long race and makes the car a more consistent performer.



The answer to this question can be answered from both a performance and maintenance angle. 

PERFORMANCE – To operate, mechanical fuel injection does not utilize a venturi (restriction) to draw fuel into the engine as a carburetor does.  This is why the flow numbers of an injection throttle body are typically much larger than you may be used to with a carburetor.  This increased flow allows the delivery of all the air the engine requires.  Without this restriction, and with no heavy fuel to deal with in the intake plenum and runners, the engine is able to pull more air at a higher rate of speed.  The fuel is mixed in as a last step before the combustion process.  This is the reason injection has the reputation of having excellent throttle response.  This increased air intake allows the tuner to increase the fuel intake which, in most cases, results in more power…. and ultimately lower elapsed times and higher trap speeds.

MAINTENANCE – Mechanical fuel injection eliminates typical carburetor parts such as accelerator pumps, float bowls, power valves, metering plates, gaskets and the age-old transition problem from the idle to power circuit.  Mechanical fuel injection literally has only a handful of moving parts, no gaskets and only a couple O-rings.  Most bracket racing injection systems are simple to tune with a single nozzle jet in each port working with a main pill in the barrel to deliver a set amount of fuel to the combustion chamber based upon the pump speed.



There are many types of mechanical injection systems on the market today and all work based upon the same principle.  They allow air into the engine based upon the throttle body sizing and at the same time the mechanical pump speed dictates the amount of fuel sent to the barrel valve.  The barrel valve, working in relation to the throttle body blade position and main pill size, dictates the amount and pressure of fuel sent to the intake injector bodies.  It is VERY important that experienced technical personnel help guide you in choosing the correct size throttle body, pump and nozzle jets for your application now and in the future.  It is a good idea to have some basic information ready regarding your combination such as engine size, compression ratio, cylinder head and camshaft specs, RPM range, tranmission type and weight of the vehicle.  RONS Flying Toilet and Terminator Kits are available in various sizes and can be outfitted with the correct sized throttle body to work on virtually any combination.  If you are considering purchasing a used injection system it is also a good idea to consult with some type of technical support to prevent costly system modifications down the road.



Unlike most fuel injection manufacturers RONS prices their systems as complete units.  These kits include the throttle body, combination barrel valve/fuel shut-off, high-pressure injector lines, injector bodies, nozzle jets, mechanical pump, complete pump mount and drive kit including pulleys and belt, in-line fuel filter, fuel shut-off cable and an assortment of pills for tuning.  The only other mandatory hard parts are three lines; (1) #10 line from the fuel cell to the fuel pump, (1) #6 feed line from the fuel pump to the barrel valve and (1) #6 return line from the barrel valve back to the top of the cell.  There are optional, but certainly not mandatory, accessories that can be purchased such as EGT gauges, air cleaner brackets, leak-down testers, priming systems etc.



In some cases a used system is a good deal, but in most cases the sysem will need parts replaced or changed for your particular application. Always be cautious about what engine the system came off of. If you have a small block Ford and the system came offf of a big block Chevy, the price of the parts needed to make the system work on your engine can be expensive. If a deal sounds too good to be true, it probably is. You can call us to check if the system will work with your engine before you buy.