FINALLY got my aquamist water injection in and running
 

After way too long (purchased the kit in like Sept of 03) and a clogged pump setback, my water inj system is in and running. As usual, chris carlisi was instrumental in the install. It is a pretty trick setup---I am using the stock washer tank as a reservoir, and the pump is mounted directly to the driver's side toe hook. All wiring, the relay etc is all in the driver's front corner of the engine bay.

It is set up now as a 1s system, metering fluid through the biggest nozzle (0.9mm) after 9 psi. I am only missing one module to turn it into the 2d system, which injects fluid at a variable rate based on fuel inj duty cycle. I also still need to mount the interior led display box.

Because I wanted to use the washer tank and because the pump should be below the tank to get the gravity feed effect, the toe hook was the only good solution we could find. the pump is tucked up out of the way, and if I bottom out the toe hook itself should save the pump from damage. I also think the pump will last longer not being subjected to constant engine bay heat. I am working on a solution to keep the pump relatively clean/dry.

Right now I am injecting windshield washer fluid, but plan to research methanol. Any feedback from guys with existing setups?

I am so friggin happy this thing is finally in and running right. It's nice knowing detonation should be a thing of the past (knocks on wood). Finding the time and patience to get it done right seemed to take forever--I suppose it's a bit of a steep learning curve. Hell, I would rather R&R and build a motor than install one of these things.

And pics will be up soon, they are on chris' camera.

congratulations! i installed an aquamist 2d kit on my buddy's GC8 impreza. what a PITA! IMO of course. many phone calls were made made but it all panned out in the end and worked great.

Did you notice anything different? Like... does it feel safer? I'm very curious...

^same question? I was wondering what the difference is, and if it is worth it?


thanks,
-josh

And to think all this time you've been mouthing off on how it's the best thing since sliced bread, but it took you this long to install it! :D

Bah, I was waiting for someone to spout off about that.

This is for you, Jules-------> :fawk:

much love,
Vincent

My knock readings dropped from mid 70s down to mid 40s. I made numerous 40 mph to 125 mph pulls last night and my intake temps stayed constant at around 25 degrees C. I was hoping to see them drop, but perhaps the temps were too low to drop anymore.

I unplugged the injection line and routed it by my windshield, and also later checked that the nozzle was unobstructed to verify that the system was working.

Rich

Congrats

Nice, cant wait to see pics..

Nice to see that you got the bugs worked out Rich!

What psi do you have your injector come on at? How much does it flow?

You might need a bigger injector since you are moving ALOT of air and running more power.

After that you might want to try a 50/50 mix. I noticed with straight water my knock went to the single digits on the PFC but less power by the butt dyno. With the 50/50 it feels like its all back with still a single count knock on the PFC.

I'm running a autox this weekend to see how it does under track conditions.

i want :)

Hi Bob,

I have the injector coming online at 9 psi. I'm using the biggest injector the kit provided, 0.9mm. I may have to surf over to their website and look for a bigger injector.

Where are you getting your methanol from? right now I am injecting windshield washer fluid, and although my knock #s went down from 70ish to 40ish, my intake temps didn't drop the way I thought they would.

Rich

What was the ambient temp during your runs?

Please post some pics, I want to use the windshield washer tank also.

I went to this place called Smiley's Racing. $5 dollars for 2 gallons.

There is a sticky at turbobuick with locations to get methanol
http://www.turbobuick.com/forums/forumdisplay.php?f=14

hey Rich,

did you notice anything different on your wideband with the alky injection on versus off?

Rich,
Try www.snowperformance.com :)

water has a much lower evaporative flash than alcohol especially when you have fairly low (intercooled and winter ambient) temps. so don't look for a big drop in IAT w water. do look for better knock and egts.

water does lower combustion temp more than alcohol, that's of course why your knock reduced.

you will get a larger IAT reduction as ambient temps rise during the summer.

the benefits of properly sized, installed and tuned AI (auxiliary injection) whether water and/or alcohol are currently under-appreciated, IMO, by our rotary community. given the fact that the rotary runs so much more egt than a piston engine and can have such a short life due to thermal considerations if i were an investor i'd be buying stock in AI...:)

i am finishing my Alkycontrol methanol system... a 4 gallon fuel cell located low in the pass side rear of the sparetire wheelwell w my pump protected behind the underskirt panel just in front of the driver's side rear axle. all aeroquip. fuelcell vented to the gas door so as to be invisable. dual nozzles. progressive. 100% methanol of course. i will post pictures and of course results in a few weeks.

unless you "tune up" for water you will make less hp. "tune up" as in more timing and/or boost. most tune w a primary eye for knock readings as timing/boost are raised.

howard coleman

What happens when you run out of water?
:squint:

Lets not think about that!
Its just one of the many things we as RX7 owners will have to add to a check lists...lol...

There's already so much Ernie, I can't take it any more! :pfanndina

45-50 degrees F? Not positive.

Pics will be up whenever carlisi gets off his ass and posts them :D

Negative. EGTs dropped by about 100 degrees F.

But ernie, I hate skiing :(

how clean of a install was it? got any pics?

Did you read my first post in the thread?

Yah, but it's all words for me since I don't know crap about FD's or what they look like under the hood.

DOH!!

http://snowperformance.net/

what he said

geez there is already enough gauges, sensors, additives, and other misc crap used to keep these engines alive at higher boost

In my first post I said that (a) it was a clean install, and (b) that pics were forthcoming.

much better, thanks man. That boost juice stuff looks interesting, but 11 bucks a gallon, yikes. I drive my car so infrequently that I'll probably pull the trigger on it.

if you plan a water alcohol mix just cruise on over to Home Depot and grab a gallon of paint thinner isopropyl alcohol (around 8-10$) and a gallon of distilled water and your cost is now $5/gallon.

check out the sticky thread at Turbobuick.com as to local methanol vendors... you should find methanol around $3 a gallon.

howard coleman

pics
 

pics of pump install

1
https://www.rx7club.com/attachment.p...hmentid=165350

2
https://www.rx7club.com/attachment.p...hmentid=165351

3
https://www.rx7club.com/attachment.p...hmentid=165352

4
https://www.rx7club.com/attachment.p...hmentid=165353

thanks for the pics!

no problem man. ccarlisi crawled around on the ground and took them :)

don't mean to hijack yoru thread rich:) But has anyone actually used their products? Feedback?

I'll let you know next month. Just got their stage 2 kit.

So you did go with them then...good to know...I talked with ray a little about the setups myself a few weeks back...guess I will just place the order nowand we will probably be tuning around the same time :)

Yo Big Bob,

how did the autox go?

Rich

Good! got first place in SM2....after alittle help from DamonB.

Interestingly, I saw lower knock and AIT after each run. On the last run I notice my AIT was higher than the others:eek:

I thought I had something fail on the water injection...instead I must have accidently hit the on/off switch and turned it off!

On another note. Saw Steve today and did some street tuning. Seems something is wrong with the Profec B install as it wasn't letting us do anything with boost. However, the boost could be controlled with the PFC.

After tuning, car felt great, then we did some pulls with the water injection on. I think Steve said less knock but also almost a point higher on AFR! (I'm running 50/50 water methanol). I have the dual stage kit and Steve thinks the nozzle is too big and boggin the car. I'm going to order a smaller nozzle first and if that doesn't work, increase the psi that the secondary comes on at.

**you caught me searching the forum on the profec install!!! BTW, the 99 spec caliper height is around 44mm.

do you think the point higher on the AFR was because of the methanol being mixed in with the water? is it possible you could try a pull running straight water to verify? i'm just kinda curious, good to hear everything is working out pretty well tho congrats on the 1st place finish

addicted,

don't want to clutter Rich's thread. I will post a follow up to the tuning session I had with Steve.

But basically, after realizing how easy it was to turn off the WI and not know it....I realized it would be safer to NOT tune for WI, unless you have all of the fail safes in place.

With that being said, most FD owners have noticed a slight HP decrease on the dyno. I chose 50/50 because some suggested that that combo would not cause as much HP loss as you are adding fuel.

By the "butt" dyno, my initial stage one injector seems not to bog the car, and the AFR seemed to stay the same. Steve said the AFR looked the same until 10psi when my second stage comes in (larger injector). I'm hoping I can keep the same HP but reduce combustion temps and knock/chance of detonation.

After I sort out the profec issue, I'll have Steve do another tune and then do some pulls on the dyno to get numbers with and without the injection

ahhh ok so its not so much that your running the mix, its because of the AMOUNT of it being injected by having the second stage coming on at 10psi. gotcha, thanks for the quick reply :) i'll look for your other thread for more updates

.

I'm wondering if this thread should be added to the archives.....

back from the dead Rich, but i think it should,

I installed mine on my previous race car and saw huge difference. I have installed it on my rx7 but havent yet run it (im using the coolingmist not the aquamist) and i was kinda wondering for the numbers

Good and helpful Thread

99.x% pure methanol can be found through biodiesel suppliers as well. I lost all of my bookmarks so I can't get you any links, but it might be easier to get it from them than a speed shop or race track.