jmb614

I talked with Jeff over at Howerton Engineering and he recommended one to two 1mm nozzles post IC. I have seen several mentione #3 and #7 nozzles but I assume that is relative to the manufacturer of the respective kit.

I've read some threads that say to place the nozzle pre-IC before the fins, others saying to place a nozzle post-IC and a nozzle pre SC, which may or may not cause issues with the SC bearings?

I guess it really all comes down to testing and goals etc. With that said, I would like to keep IAT's as close to ambient or even below if possible without tuning to remove fuel. What ratio mixture and which size nozzles should I use with regards to the HFS-3? Where should these nozzles go for best results, atomization pre-IAT/MAP sensor etc.

Thanks for any help!

Hulk

Although the aquamist is a great system and different from the others, I would still use one nozzle. You just have to figure out if you will use 100% water or 50/50 mix because the nozzle should be smaller for 100% water

BagMan

If the nozzle is installed just after the intercooler, can you get in there to change the nozzle without removing the blower?

jmb614

I would like to refrain from having to take fuel out of the tune to compensate for the meth, from what some have mentioned a 50/50 mix would likely enrichen the mixture, correct? Would one nozzle with say an 80/20 mix be enough to keep IAT's below say the 115F mark? Unless of course the tuner has changed the default of a second 3* of timing being pulled at ~115F IAT.

From Jeff--
"
The cliff notes is water only cools down to 130F or so, meth will cool sub ambient. My guess would be one large to two large jets as a starting point. Probably 2 x 1.0mmm jets after the IC if possible, you may need more depending on the readings.


The kit comes with every bit needed to run a two jet system except for a tank.



Jeff"

Hulk

Bagman, You would have to take off the blower to install the nozzle

Jmb, water will cool to below 70*, I and many others have seen that

jmb614

So water will cool the intake charge to whatever temperature the water in the tank is? If so, what ratio and nozzle size should I use?

Hulk

I have seen my iats go down to 60* sometimes. Because its only water you can use a small one like .7mm

jmb614

If you use straight water then you wouldn't get the benefit of octane boost with the methanol, correct? Would a .7mm nozzle be large enough for an 80/20 or 90/10 mix?

Hulk

Yes on the mix and it will still provide detonation protection with only water

jmb614

So you are running one nozzle, what size and mixture ratio?

According to this article:http://howertonengineering.com/tech-...ating-jetting/

If following the formula and assuming 8 cylinders with 550cc fuel injectors and also assuming between 12.5% - 17.5% of fuel flow as 100% water requires between 10-15% of fuel flow, and 50/50 requires 15-20% of fuel flow, (I stated 12.5% - 17.5% due to 80/20 mix), then it appears that two jets would be needed in the range of .8mm to .9mm.

Given that it is difficult enough to find spots to place the nozzles I would assume if you are only going with one nozzle, even with 100% water, wouldn't you want to do a 1mm to 1.2mm nozzle, or is my math off?

Of course if your real world testing says otherwise than I am fine with that given that so many others have said #2 or #3 in the TB housing and #7 post-IC.

Hulk

Ya, I had the bigger nozzle and it just didn't work because it was too big , either would bog or if I used meth it made it rich so I changed to smaller noz

jmb614

So a .7mm nozzle perhaps in the Denroll location with a 65/35 or 80/20 water/meth mix?

Hulk

IMO I don't like that location because it sprays right on the iat sensor. To the side right after the ic

jmb614

Would this bogging issue be avoided on the Aquamist since it injects based on IDC?

Hulk

Possibly because of the idc.
Imo .7mm is fine

jmb614

I think we may be talking two different sizes however, as a M7 in devils own 'speak' is a 1.2mm nozzle in regards to the Aquamist.

Hulk

I'm talking about the aquamist nozzle, not any other company. I use the .7mm from AQ

jmb614

Oh no šhit eh? I thought you were running a different kit entirely? So you only run one .7 nozzle post IC aka Sneakyneon location across from the MAP sensor?

Hulk

Yes same position as sneaky
Now what happened to me is I got a DO pump with the boost activation an went with the aquamist nozzle after using the DO nozzle which I didn't like.

I saw a friends set up with the AQ and really good and I said if I could do again it's AQ all the way.

The AQ system I the best imo

jmb614

According to Jeff at Howerton a M3 is about (.6mm)250cc and M7 is about (1.2mm)600cc.

If you run the calculations, and considering the HFS-3 injects differently than the DO, it appears that, with a 50-/50 mix, around 800-850cc of injection is needed.

I'll likely try a .4 pre-SC and 1.2 post IC and see how things shake out. I could always easily blank the .4 pre-SC and if absolutely necessary drop injector down in size on the post IC.

Hulk

Too much in my opinion...especially post ic

jmb614

Isn't an M7 what most have ran post IC, with success? Are you speaking to a bogging issue with the amount that is injected using that size of injector?

Hulk

I had a bigger nozzle, close to m7 and afr became rich and lost power, saw it on the dyno. you want to cool only, no tuner will tune for it.

.7mm aquamist nozzle post ic, that's my opinion, you can do what you want though.

03svtkiller

I would listen to hulk he knows his stuff but like we spoke on the phone I run a #7 and #4, yes it runs a little richer but not too bad. Also you can change the mixture from 50/50 to like a 30/70 which I plan on trying next week to see what it will do to my AFR but I don't mind it running a little rich plus you gain boost either the 50/50 mix so it equals out.. I'm happy with my setup but deff going to try some different mixtures to see what it'll do to my AFR. Good luck.

jmb614

Thanks for the help Hulk, much appreciated. I really want to be able to play around with jet sizes and such, maybe start off with just one jet at a .7 and see how it goes.