Aquamist is perhaps the AI company with the longest operating record and has a breathtaking array of proprietary product. primarily water. a huge amount of excellent tech exists for the reading on their site. AQ had an awesome forum that is currently down and hopefully will reappear.

http://www.aquamist.co.uk/

Richard L has posted on our section and is a key tech person for AQ and should always merit your attention.

though a U K company, AQ has a number of U S dealers all of whom are invited to post.

howard coleman

 

Thanks for the mention.

I will be a bit more useful to the forum in a month or twos time when my workload lessen after Christmas. We are trying to finsh off all the outstanding development work on this side of Christmas.

I am hoping to get a specific system design for the RX7 community - especially for those alcoholics.

Richard

 

thanks for the post Richard.

we look forward to developing a close relationship w you and AQ. i, being a methanol guy, would be especially interested in anything you might come up w re alcohol...

AI readers should know that Richard and AQ have contributed greatly to moving the AI ball forward. AQ has been primarily water oriented and has accomplished great things within their space. visit their site.... lots of tech.

welcome!

howard coleman

 

Richard,I just bought a system 2d from my friend Andrew in New Zealand.
I should receive it soon.

 

As an Aquamist user I do have a suggestion: higher pump capacity. Since the race pump will only flow +- 600cc/m (with a booster pump). An RX7 application will very easily out strip the available flow. With alcohol this issue will be even more prominent given the higher volumes required.

If the race pump can not be made to flow more, maybe make the fittings available to use a surflow type pump. I’m sure some one will make the argument of using 2 race pumps. But at $500 a pop, it’s not an economical approach to the problem considering the price of surflow pumps.

 

i use 1200 cc/min alcohol and second Pimp Hand's comments re AQ deliverability.

howard coleman

 

The quality of the aquamist stuff is top draw along with the tech back up and knowledge.

When the time comes i will run only aquamist. After a glimse at the best i now know its the only way forward.


ola Richard
Scott

 

Thank you all for the encouragements. We have started the Shurflo based system slready but not quite ready for the masses. At present we have offered a custom system for the Subaru community, can be viewed here.

This system is based on a 150W custom shurflo pump, kindly built for us by Shurflo. Compatible with methanol. I believe by February next year, a RX7 compatible system will be available and offered at about the same price range as most Shurflo based systems currently on the market.

The original aquamist pump was designed and built for the WRC cars, commissioned by a well known team. The pump must weight less than 1kg, high pressure and instant pressure and zero run-on. Without help from a solenoid valve (extra weight). We have achieved all those specifications. The pump only weights 850g (without water inside).

Richard

 

love hearing about those lightweight rally bits

are the normal aquamist kits compatible w/ alky and methanol?

 

Twin pump custom system here :P

lol, had to post that !

 

We can supply two version of hi-flow systems, based on twin aquamist pump or one shurflo pump:





Designed for alcoholics


Richard

 

or

 

Richard,

Are the Aquamist pump safe to use with striat methonal?

I have the 806-052 pump


and a MF2, is there a better controller?

my system has never been installed and I wanted to ask the question before I run methonal in it.

 

Could you let me know the serial number of the pump and I will check for you. Aquamist pump can unstandard methanol up to 75% but the user the years, the seal has been changed. Last updates were: 2003 December and 2006 August.

It is not relates to the methanol's corossive properties, it is about the lack lubrication of the valves. All aquamist pumps casn run 100% methanol, seasl may have to be changed after 50hours of usage. It only cost a few dollars and if prepare to do it yourself.

Another problem to deal with is the fire hazard of the application, This is why we only recommend 50/50 normally.

NOTE: The piston seals is not compatible with ethanol (denatured). No more than 5%.

Richard

 

We are considering designing a brand new 100% alochol compatible injection system for the RX7, mirroring the the duty cycle of the sum of the priming and secondary fuel injectors combined. It will be based on the 150W Shurfl pump.o

This will mean tuning is a simple because the alcohol/fuel is totally predictable - please chime in and make some comments and perhaps adding other improvements on the basic concept

Richard

 

Sounds good.
Where will the injector duty signal come from?
Will I be able to specify no water below a certain boost level?
I'll be using 100% water. Will there be a nozzle suitable for injecting pre-turbo?

thanks,

Steve

 

Will this system have some sort of injector/high speed solenoid that pulses to control the flow instead of the pump? If so what will the flow limit be?

 

Richard,

that's exactly what is needed as the next step for the rx7. keyed off the total injector duty cycle. sign me up.

howard coleman

 

Steve,

1) We tap the signal from the "pulsed" side of the fuel injector.

2) The system can be triggered by MAP sensor or IDC.

3) In order to inject pre-turbo, we have to make a water jet holder. The jet is positioned about 20mm in front of the compressor wheel nut. If you position far away from the compressor wheel, some water may be collected on the surface of inner bore, slowly trickling down towards the compressor wheel tip and causes unnecessary errosion. (the outer tip runs at much higher linear speed).

I believe Pete at Rice racing uses air-assisted atomising jet, producing much small droplet size - little effect on tip waer long term. If he can chiome in and give us a few lessons on this.

Here is an example of such a holder:

 

i followed the thread on your forum where you introduced this centered water jet holder. did you ever go through with desigining one that fed the water to the nozzle by hollowing out one or more of the supports so that no extra lines would need to be running inside of your intake piping?

i'm very interested in pre-turbo injection as an alternative to using an intercooler in an effort to drop a ton of weight and also, to reduce lag. given that this is a weekend (more like every other weekend) car, doing a pre run check up to make sure everything was functional to avoid catastrpohe wouldn't be a problem for me to do every single time.

please let me know where you're at with pre-turbo systems

thanks
ryan

 

We have successfully drilled a 1.6mm hole right through one of the splines, but yet to modify the jet for "side feed" . Just too many interesting things happen this years for us. We really should finish one project before starting the next.

More thing we made is encouraged by the customers, therare just no end of good ideas. We can make a great living just desiging specials.

Again, we have no plans to bring it to the market place unless we have a reasonable order quantity to get us started.

 

what is a reasonable amount of people? I'm definitely one. please post or PM me what you'd charge for one for me without them being in production, if you'd be willing to make another one for me.

thanks
ryan

 

reasonable quantity?

It is not just quantity, each holder will be have different diamemter unless all 50 people usess the same turbo, then it is viable for setting up our machine to run a batch.

We have been charging GPB80 each at one off and 50 pounds for two (same size). Large quantity, say 5 will be £30.00 each (same size).

Richard

 

I'd normally be interested but I think I'm going to wait until you and Scott get this new system sorted out, it sounds very promising. How far into next year do you think that'll be?

I've pm'ed Rice a couple of times about his setup but not had any replies so I've given up on that route.

 

I have also PMed Rice several times regarding his setup and have not gotten anything in way of a reply. I need water injection for a 15psi of boost setup (about 400whp), just for safety sake on track days. Also, ambient temps get into the 115+ degrees fahrenheit range in the summer here and I would like extra safety during those months as well (although I try not to boost with ambients in the extreme zone).

Do you think your most basic kit will suit my needs? I thought about pre-turbo...but I am not so sure anymore... I definately do not want to do any percentage of alcohol due to cost, availability and track racing sanctioning body requirements.