aquamist race pump - increase flow
 

hi all,

one question about the Magnetic piston pump (race version) and how to grow the flow !

when using a priming pump activater. ( it is about 20 dollars. (size: 12mm x12mm x 12 mm) )
http://www.pltek.net/catalog/images/clip_image0023.jpg

and this pics :

http://www.aquamist.co.uk/forum/priming.png
http://www.aquamist.co.uk/forum/stretcher.GIF


and a quote of ricard.l of aquamist on an other forum,



i need a max of 900cc of WI for my 3000GT
i bought a aquamist 2C and a 2S

i would like to put the 2C ( controled with emanage ultimate sub I/J map ) at the throttle in order to kill the knock and increase compression ratio
i would like to use the 2S at the output of the 2 smics ( using dual nozzles ) ( to decrease air temp )

the max flow of the 2C system sould be 300cc max.
but i need a big flow for the 2S system ( 600cc for a boost pressure of 25PSI max )


Richard, is this setup a realist setup ?
can i grow the flow of the race pump to 600cc with the help of a priming pump ?
what priming pump can be used ? any windscreen washer type ?

or the best way is to go to Aquamist HFS-5 ?
( as i have the 2C and the 2S, i don't really like to buy an othe WI system, but .... )


and an other question :

Aquamist jets using Aquamist race pump
https://i116.photobucket.com/albums/.../flowrate6.gif

Aquamist jets using Aquamist/Shurflo 150 psi pump
http://www.aquamist.co.uk/forum/gallery/HFS/flow4-s.gif

a nozzle of 0.4 can flow a max of 165cc-min with a race pump from 4bar (58PSI) to 12bar (175PSI) ! the flow is constant even if the pressure is fluctuating, no ?

so why it can flow from 100 to 200cc-min or more at differents pressures with a shurflo pump ?

it seems that the race pump fonction is to increase the internal pressure but it will keep a limited constant flow. ( so a priming pump can be used to increase the flow at the exit of the race pump )

in that case, i could understand the characteristic for the shurflo pump.
are you using a speed control of the pump in order to increase the flow at the exit of the pump ?
increasing flow means more pressure, and more flow at the exit of the nozzle.

in any case, if i'm right; the flow at the exit of a nozzle depends of
- a minimum of pressure between pump and nozzle
- a variable flow at the exit of the pump

am i right richard ?


thank's for the help

@+
fred

bump,

any comments for increasing the flow of the pump an the other question ?

thank's
fred

Fred,

I somehow missed this post... sorry.

The aquamist pump works differently from the Shurflo pump. It acts more like a solenoid valve than a rotary pump. The internal piston goes back and forth fifty times a second. 50% of the duty cycle is priming the other 50% is injecting.

Since the pump can only deliver a fixed amount of fluid, flow over 330cc/min means a gradual decrease in pressure and flow. Adding a priming pump will extend the capacity, hence delivery.

http://www.aquamist.co.uk/cp/sys1/te...animation1.GIF

hi richard,

what do you recommend for priming pump ?
- a simple pump like headlight washer pumps
- a marine pump with high flow ( 10L/min ) and a cut of at 17PSI ( for example ) ?

how to know the flow of the WI with a priming pump and a specified nozzle ?
must we make some tests before the use ? or is it possible to calculate the amount of flow ?

my goal is to flow 600cc with a race pump and 2 nozzles. do you think it's possible ?

thank's
fred

When I did the test. I used a priming pump made by elice (Brazilian maker). I picked it up from our local motor accessory shop. It made ~35psi at 12V. The flow was tested and measured at 570cc/min.

You just need to do the test yourself with a stop watch and measuring jug. I really cannot recommend a priming pump because there are usually sourced without a specific manufacturer.

600cc/min+ is not a problem with a slight reduced pressure or if you want to use a headlamp washer pump - I believe it is more powerful and turn up the water pressure a bit more (2c or 2d).

Fred, I used a Flowjet LF-122 pump for my setup. Its probably a little more then what you need but it worked great for me.

IF you go with this pump let me know, I have a couple of small 6mm barbed fittings that help with using this pump for a primer.

it seems that this flojet Pump is a good product. 12 Vdc, 1.0 Gpm, 35 Psi (max).

i really need a priming pump if it can increase the flow of the 2S or 2C.
did you used the pump as a priming pump + magnietic pump ?

if i want 600cc with a magnietic pump, the priming pump must flow 600cc/min.
1Gpm represent 3.8L/min and i need 0.6L/min so that's more than i need :lol:

but i wonder how the system will work with a high flow priming pump.
if you have good feedbacks, please tell our your comments.

i think that increasing the flow will increase the pressure.
adjusting the pressure switch should limit the flow at the exit of the nozzle.

but regarding this, at the same pressure, why the flow is different for the same nozzle ?
a 0.9 nozzle can flow 325cc/min at 6bar ( 87 PSI ) with a race pump
so why a 0.9 nozzle at 87 psi flow more than 370cc/min with a shurflow pump ?

Aquamist jets using Aquamist race pump
https://i116.photobucket.com/albums/.../flowrate6.gif
Aquamist jets using Aquamist/Shurflo 150 psi pump
http://www.aquamist.co.uk/forum/gallery/HFS/flow4-s.gif


because i think i must play with the setting of the pressure switch to limit the flow.

i wonder if i think good with a setup priming pump + magnietic pump.





@+
fred

Hey Fred, valid questions. I'll let Richard comment of the pressure/flow/jet aspect of your questions he does much better in conveying a proper answer then I on this subject.

A couple of years ago I was in the same boat as you, I wanted more capacity out of my race pump. I went with the Flowjet LF-122 as a primer and did not have any issues, the barbs makes the install using the existing lines pretty clean. Now to be truthful I had my HSV controlled by an SMT-6 and I had jet adapters to make jet swapping easier.........all this means is that I was able to tune my system with high output primer pump to get very very near the exact results I wanted.

Like Richard has mentioned earlier, a simple priming pump, nothing fancy is all thats needed which means that an off the shelf windshield washer pump will suffice to increase the race pumps output. I have an unused new open box ANNCO universal pump that can be used as a primer pump that I can send to you if you would like, its only collecting dust on my end but you will need to fab up something to fit the 6mm lines to it.

is it still available ?
what could be the increase of the flow ?

thank's
fred

I'll need to see if I can find it. I'll check tonight. Its a pretty low cost item at the parts store if I can't.

You will need to test it out to see the increase.

FWIW I have used the "race" pump, just in Perrin PWI-1 set-up.

I got about 300 cc/min out of the race pump, a little less when injecting it into a pressurized system.

With a primer pump all I could get out of it was about 400 cc/min into a 20 psi sealed container.

In order to increase flow, you need to use an additional jet for it to reach 600cc.

I did.

I had two 0.6 mm nozzles.

I tried two 0.8 mm but it didn't make any difference.

what pressure did the small pump generate?

I'm running the race pump along with a primer pump and a 100cc acumulator and picked up some power when I went from twin .6mm nozzles to twin .8mm nozzles. I was able to lean out my afr's about 1/2 a point and run a little more timing. It just worked for me. I still need test out how much my pump is actually putting out with my twin .8mm nozzles, I'm very curious.