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Old 03-02-2008, 04:41 AM   #1
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Default Water tank level gauge?

I'm researching water/meth injection as an alternative to adding an intercooler when I bump a stock greddy setup up to 8 psi - this would save weight and avoid the pressure drop from the long tubing and IC. Both +'s. I'm just worried about the chance of running out of water and thought that maybe a simple aftermarket fuel level gauge could be adapted to show the water level in the tank for the washer fluid tank.
What do you guys think / would this be difficult to do? With the ability to see the level from the driver's seat, you would never have to worry about unknowingly running out of water any more than you would have to worry about accidentally running out of gas...

And a side question: roughly how long does it take to go through a washer fluid container's worth of water/meth mix? Is this a fill every two days thing or daily or weekly?

-Ryan
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Old 03-02-2008, 09:23 AM   #2
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the ABS cars have a bigger washer fluid tank in the front bumper. it has a low level indicator. lights up in the gauge cluster.
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Old 03-02-2008, 12:01 PM   #3
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Search. I think joe perez covered this and how to add the light to cars

Depends on how much your boosting and injecting. Float switches, if your not afraid of very simply wiring is the way to go.
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Old 03-02-2008, 12:16 PM   #4
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Search? Heck, it's still on the first page: https://www.miataturbo.net/forum/showthread.php?t=9256

That covers the non-ABS equipped NA cars. Like paul said, the ABS cars, on account of their hidden bottle, already have an indicator.

Loki's pretty much got it in terms of tank longevity. If you've just got a sedate highway commute, then a washer bottle will last you a full tank of fuel. If your daily drive is all city, all hills, then expect to fill it every couple of days.
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Old 03-02-2008, 11:39 PM   #5
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Thanks guys. I would prefer to do a gauge as opposed to a warning light - it's much more informative to have a level indicator to always be able to monitor instead of hoping the light will turn on to warn - if water injection is instead of an intercooler and the bulb for the light goes out and you forget to pop the hood and visually check one day, boom no motor. This is why I'm considering a gauge.

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Originally Posted by Loki047 View Post
Float switches, if your not afraid of very simply wiring is the way to go.
I can do any wiring that's no problem.
What are float switches?
I thought I would find several fuel level gauges on summit racing but they've only got fuel pressure gauges. I'm sure they've got to make aftermarket fuel level gauges - anyone know where one can be found?
-Ryan
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Old 03-02-2008, 11:52 PM   #6
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Well i have an idea for an potentiometer and an arm similar to whats in your toilet.
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Old 03-03-2008, 12:08 AM   #7
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Seriously? What do guys use for a fuel gauge for race cars that have a custom tank and the stock dash/gauges removed? There's got to be a fuel level gauge with some sort of sensor/sender unit.... no?

EDIT: Okay, found this:
http://www.autometer.com/cat_accesso...il.aspx?vid=71
It works with any 240/33 ohm empty/full fuel gauge and is adjustable for depth...
Which will work with a gauge like this:
http://www.autometer.com/cat_gaugede...id=3054&sid=13


What do you guys think?

Last edited by ThePass; 03-03-2008 at 12:27 AM.
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Old 03-03-2008, 10:27 AM   #8
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ok thats pretty much what i had in mind, but you will most likely have to shorten the arm and get a float that is more buoyant
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Old 03-03-2008, 02:14 PM   #9
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I'm giong to have to do a bit more research and asking of annoying questions before I decide wether to go with IC or water injection but if I do go this route I'll be experimenting with this gauge/sender.
-Ryan
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Old 03-03-2008, 05:18 PM   #10
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if you dont get round to it, i'll give er a shot in the next 2 weeks when i inmstall my WI. I am going WI only y and this sounds cool.
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Old 03-03-2008, 10:08 PM   #11
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i just contacted AEM about all this, and i will give you all the info when i get it from them.
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Old 03-04-2008, 04:50 AM   #12
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cool. let us know how it goes! I won't be going with water injection for some time, as I'm not even installing the turbo for another few weeks.
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Old 03-04-2008, 04:56 AM   #13
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It can be done and very simply after all it is, just a fluid container.
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Old 03-05-2008, 04:41 PM   #14
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both the products you posted are compatable together. i think i will pick one up, and use it in my system. i like it.
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Old 03-06-2008, 03:22 AM   #15
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Do you know how much those tanks are from Mazda? I'm quite sure we don't have any ABS equipped NA fives in Australia.

The tank sounds ideal, I don't really want to run **** all the way from the boot.
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Old 03-06-2008, 11:36 AM   #16
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Perhaps more importantly, has anyone actually measured the capacity of the ABS-style water bottle? Unless it's significantly larger than the US-spec LBS-style bottle, I think you will find its capacity to be insufficient.
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Old 03-07-2008, 10:30 AM   #17
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Quote:
Originally Posted by Joe Perez View Post
Perhaps more importantly, has anyone actually measured the capacity of the ABS-style water bottle? Unless it's significantly larger than the US-spec LBS-style bottle, I think you will find its capacity to be insufficient.
I did so to use two of them as reservoirs for my a/w Intercooler.

Compared to the normal miata water bottle, it's really big, it's actually the size of your trunk mounted reservoir tank :-)

I'ts got a capacity of 5.5l or 1.2gal!

so I'd say, along with the low level indicator, it's an ideal WI reservoir, easy to refill and it doesn't take space away in your enginecompartment or trunk
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