Just looking for expert opinion's on using a fuel cooler. I am in the middle of upgrading my fuel system and I am using all Areomotive components (A1000 fuel pump, fuel pressure regulator, and filters) and -10 line from the fuel cell to the rails. I am going to be driving this car on the street and most likley bypassing a ton of fuel when just crusing or in traffic.

I have been thinking of running a fuel cooler to help keep the fuel cell from turning into a large mazda destroying fire bomb or something slightly less bad, like hampering performance in any way.

Anyway just wondering if you all think this is nesecery or complete overkill? It would make my engine bay a bit more cluttered and would be harder to plumb so I would rather not use one if I can get away with it.

Thanks in advance!

 

Sounds like a good idea to me.

Stick it down in the front passenger vent cowl induction area (by the windshield wipers- feed interior vents).

You know it gets lots of airflow at speed as it is in positive pressure area and is isolated from engine heat/ safe from wrecks/vibration and you will smell it if it gets a leak Plus it is right by the fuel rails!

 

I say plumb it up without it and drive around for a while and check fuel temps. If the fuel is hot you need a cooler if it isn't you dont I don't see any sence in putting one in there without knowing the fuel is going to get hot.

 

I added one to my new fuel system.

I figured, its a $40 part, couldnt hurt.

 

i debated in my head about this in the past, posted a question, https://www.rx7club.com/forum/showth...hreadid=147071
and decided against one.... i dont think it would be a *bad* idea if mounted in a good location....

 

I am also using an A1000 pump and a sump attached to my tank , I have felt the temperature of the sump after driving a few times and it IS HOT to the touch , a well place cooler (small oil , tranny or any other ) will make the world of difference , dont have any dyno figures , just the good ol' *** dyno. A thing to note , there would'nt be any appreciable temp . change in things like pipes , hoses or even the fuel tank , just because these items weren't designed for this , they dont have a large surface area to allow for proper contact and residence time to allow GOOD heat transfer , most times the fluid passing through is going way to fast to exchange any heat . Remember the three methods of heat energy transfer..... conduction , convection and radiation !!!.

 

Ghetto style fuel cooler - a paint can with ice in it! I've seen V8 bubbas do it this way to cool the fuel down at the track. Just use plenty of coiled up brass tubing for the fuel line in the paint can. Insulate the can and use the lid to keep the ice from melting too quickly. With about 6'~8' of fuel line in the can and it's running through ice, that will significantly cool the fuel.

It's not pretty and it needs fresh ice all the time, but I'm sure it'd cool the fuel down a lot more than an air/air cooler with maybe a foot or two of tubing attached to fins.

Just my .02

 

is the cooler for delivery or return? i'm assuming return, but what effect would injecting cooler fuel have?

 

I was going to run mine on delivery, just to get any potential gain it might have. Thanks marcel on the info about the a1000 I'm definatly going to use one now. What fuel pressure regulator are you running? I am going to run the aeromotive one but the return line sure seems small!

 

Well there you go Fuel gets hot when not in the boost and using it all up .

 

actually, there is a canister that you can buy from summit racing...i cant remember the actual name but I have used it before.just put dry ice and it will cool it almost all day.

 

If using an air cooler put it on the return side. Why risk running the high pressure supply side thru the cooler? Too much addl lines connections and pressure drop.

If running an ice cool can then deffinetly put it in the supply. Rotaries use the fuel to cool the rotors so this should allow you to get by with a bit leaner mixtures.

 

wheather it is placed on the supply or return the differential pressure is the important thing , but if it is placed on the return side the flow through it would be reduced or stopped completely when the regulator closes when in boost there by totally bypassing the cooler and reverting to the previous "uncooled" state , I would think that this is exactly when the cooling of the fuel supply would be most desirable ? .

 

summit sells a "cool can" which is just a plastic 'paint can' looking thing with a tubing that coils around inside the can. If i was to run a cool can i would run it as close to the injectors as possible. Im not good with thermodynamics (cant even spell it) but wouldnt running it right after a FPR be the best place?

 

The FPR is on the fuels return route (to the tank) , the whole idea of this thing is to supply cool fuel to the rail / engine for better combustion , so I think it should be placed between the pump and the rails , the overall temperature of the fuel in the system would still lower though , so the fuel pump would also be happier.

 

How about AEROMOTIVE FUEL PUMP CONTROLER
"slowdown the movement of fuel, against engine RPM"

BTW. can anyone HELP! LOOKIN for fuel rails
750 pri 1600 sec. series 5 intakes w\AN fittings -8

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