smallest fuel cell with a lvl sensor?
 

for the lift of me i can only find like.. the 15 gallon units. im in need of a 5 gallon unit with a level sensor, or a low level sensor or something. ANYTHING.

Re: smallest fuel cell with a lvl sensor?
 

Do you really want a 5gal tank? I have one in the crx and I have about a 90 mile range between fill-ups. It sucks. You will kick yourself in the ass if you get it. IMO.

Re: smallest fuel cell with a lvl sensor?
 

No. the reasoning behind this i think is pretty good.

the 2nd gen as well as most rotary engines have two fuel rails. Primary and secondary.
what i plan to do is fill up my normal tank with 87octane and fill up the 3 gallon with 93 octane, or my own home brew e85(shut up).

i figure... why buy 93 and wastefully use it while idling in your driveway when you can use it only in on boost situations?

heres the situation. im running a haltech e6x. on a rotary setup, the injectors are staged from primary to secondary. When im in off boost, the primaries are the only ones working. on boost, the secondary (1600cc X 2) bank fires up. they have their own separate fuel rail and whatnot. So i was thinking. Why fill up my tank with 93 ( way more expensive and harder to find now a days ) when i can have 87, and run that ---- during cruize and whatnot, and when i hit 1 psi, i can just switch over to using 93 or e85 and just rocket.

Re: smallest fuel cell with a lvl sensor?
 

around here 93/94 is $.20 more than 87. so an extra $1 per 5 gal is not a deciding factor imo
however your idea is very interesting. best of luck

Re: smallest fuel cell with a lvl sensor?
 

yeah i know. the thing is, i can make my own e85 and put that ---- in there and drive off slamming the boost and be perfectly happy.

Re: smallest fuel cell with a lvl sensor?
 

That is a nice idea. Sounds like a hassle IMO but to each their own.

What about in the high-load low rpm range? You could still have det. problems even out of boost...

As far as the fuel level goes...worst case you could take a fuel level sender from some stock car and wire up an led to come on when the fuel reaches the appropriate level on the potentiometer. At least then you would know when its getting low.

Re: smallest fuel cell with a lvl sensor?
 

btw what is the static cr of those crazy wankels(how big of an issue is det)
i kno just about nothing about rotaries :1

Re: smallest fuel cell with a lvl sensor?
 

what do you mean? im runing a compression ratio of 9.1:1 if thats what you mean.

not an issue. at every 500 or so rpms, we have a negative side and a positive side of the map. left side is negative and right side is positive. if im not making boost at 5k rpms, it will still be on the regular bank of injectors.


i could totally not use the 1600's if i run no boost. ill have to figure out what the staging values are cus id like to just have one swift cut off point. cus as far as i know.

Re: smallest fuel cell with a lvl sensor?
 

That would be a good idea if you wanted to run race gas in the second fuel cell.. Solid way to hustle people at street races.

Re: smallest fuel cell with a lvl sensor?
 

ha ha ha yeah. good way to hustle, but i dont street race man. i dont want to get my ---- crushed, or kill someone.

what i have decided is that a level sensor is just a lil more complicated. what i will do is just so simple it hurts. the 3gallon tank usually has two fittings on top and two on the bottom for returns and feeds and so on and so forth. so what i will do is just run a clear hose from the top to the bottom to give me an indication at what level the fuel is at.

now i just have to make sure that the haltech is fireing them off by themselves rather than just mixing the 550's with the 1600's.

Re: smallest fuel cell with a lvl sensor?
 

Use a bevel and gauge from a seadoo. It would be perfect for that and it's just 1 12v source and a ground.

Re: smallest fuel cell with a lvl sensor?
 

well good luck your fuel swapping idea. however i wouldn't do it.

if your running a 2nd gen rx7 there are 2 types of fuel rails in those years between 86'-90.

the series 4 rx7 between 86-88 has had the infamously known problem of a Pulsation Damper. honestly the biggest ---- up Mazda ever made. (and i know i had rx7 catch in flames)

anyways I believe the fuel start off at the primary fuel rails and ends and the Secondary Fuel rail. (don't quote me i don't have my diagrams in front of me) it has 1 damper and 1 regulator. the Series 5 89-90 has a solid pulsation damper so it wouldn't leak and 1 regulator. i also believe they reverse the flow of the fuel. starts off at the secondary rail and ends at the primary rail.

anyways your going to have to a lot of problems how redesign the new fuel rails. they are going to have to be different as you cannot use the existing rails. plus your going to need 2x fuel regulators and 2x dampers so you don't have fuel shock in the fuel rails. of either of them.

on top of it, you going to tune out the transition of 550 cc primary injectors to 1600cc injectors with different fuel curves of your 1600cc.

what gets me is this. if your 1600cc only come on during boost. you'll only be running on 2 injectors not in boost, now that your 2x 550cc injectors maxed will only support 150 hp max. granted i doubt your motor would ever hit over 150hp on a light throttle not in boost.

then your going to have to install the safety feature of where to put the fuel tank. (and if you say back in the hatch you a moron.)

but aside the custom fuel rails, the extra money it takes to for the additional Dampers and regualtors, and the added expense of retuning your car.

i am sure it'll pay off.

Re: smallest fuel cell with a lvl sensor?
 

because your an idiot

o really? i guess i better undo my $500+ dollar custom fuel setup then.

a lot of after market regulators have FPD

yo momma

your an idiot. i don't need custom fuel rails, i don't need anything. my whole damn engine, fuel management, and fuel delivery is custom you ---- stick.

Re: smallest fuel cell with a lvl sensor?
 

so unnecessarily angry... sounds like somebody needs to get laid.

Re: smallest fuel cell with a lvl sensor?
 

zing

Re: smallest fuel cell with a lvl sensor?
 

u have no idea.

Re: smallest fuel cell with a lvl sensor?
 

:l

Sounds like a solid way to save $3.72 a year. :1 That could add up to about $223 in a lifetime! :o Minus the cost of the setup you will be lucky to break even after 60 years. :S

Re: smallest fuel cell with a lvl sensor?
 

Jesus just stop right now.Why do people insist on doing super custom waste of time setups.I know it hurts to hear but you are the same as every other guy to build a second gen RX7 just run 93 in the tank and some meth injection if needed and be done with it.Everybody wants to reinvent the ------- wheel when there is no reason to.Just cut and paste someone elses build and enjoy having a fast car.This plan is full of aids :3

Re: smallest fuel cell with a lvl sensor?
 

jesus. i ditched the plan.

Re: smallest fuel cell with a lvl sensor?
 

let me get this right... you call me an idiot twice, because you didn't mention you already had spent a ridiculous amount of money on your "custom fuel system" $500 custom fuel setup half of that already went into the on just 2x 1600cc injectors. if you are running 550cc +1600 cc injectors.

but Regardless your still a moron. WHY would you want to have this setup only to run 91? Come up get out of your closet and spend the money on 100+ octane fuel. i mean that's the reason why you want to do this right? better fuel for boost on the fly. why not run 100+ octane

this thread is pointless if a guy ask a question only to rebuttal with ---- like "yo momma and your an idiot". what's the point of making a thread asking a question only to be a moron. wait wait. unless that person is a noob asking stupid question he should already found alternatives for.

but i find Kain always has constructive arguments. with ---- like, "Idiot, Yo Mamma, ----, My rx7 can kick your cars ass, I'm an idiot, Blah blah blah blah, I don't need piston in my life." but enough about constructive people

Let me save you some money and a little bit of wasting your life (not that your life is important). instead of trying to get a 87/91 setup going.

GET alcohol/water injection does the same thing your looking into getting. not only that it's been known to increase your octane value seeing how water is not flammable.

you don't even have to use alcohol. WATER alone help by alot. AND IT's FREE you cheapo mother fucker.

now go ---- a goat.