Water Injection
Joined: Aug 2006
Posts: 7,244
Likes: 23
From: Austin, Texas
Water Injection
Is there anyone that is running a water injection kit on a N/A motor? Is there any benefit running a water injection kit on a N/A motor?
http://www.z1motorsports.com/350_g35...oducts_id=2230
-Sean
http://www.z1motorsports.com/350_g35...oducts_id=2230
In gasoline engines, as with any intercooler, Stage-2 MAF Boost Coolers suppress detonation so more power-producing boost and timing can be utilized. Water, with its high latent heat of vaporization, cools the intake charge and combustion. Methanol cools the charge and combustion, but also acts like an extremely high-octane fuel (some researchers claim as high as 120 octane), and adds more oxygen to combustion. These systems contain everything needed to start making big HP! They are designed for gasoline vehicles that operate with a mass air flow meter. They're perfect for 8-30 psig boosted engines. They work extremely well with positive displacement superchargers and fast-spooling turbos that have high boost at low rpm.
Registered User
Joined: Dec 2003
Posts: 2,514
Likes: 5
From: Marietta, Georgia
Water like unburned excessive gasoline* cools and slows down the combustion event.
* excessive gasoline is used under acceleration to SLOW the combustion [flame speed propagation thru combustion chamber].....time in milliseconds from spark plug to the edge of cylinder or when 68% of fuel mass has reacted. The ideal time results when the most force is applied to the piston to push downward WHEN the rod is 16 degrees after top dead center.
When max force occurs too soon the rod drives the force straight downward and pounds the crank bearing reducing its life [called knock or preignition].
Water [even with ethanol to avoid freezing] is less expensive than gasoline but storage and proper pumping and metering adds cost vs just making the normal [14.7 AF] mixture richer via longer injector open time during acceleration.
The question is how long will you operate at wide open throttle vs gasoline cost.
Does water have an advantage over excess gasoline, not really other than the heat of vaporization is higher.
http://www.audiworld.com/tech/eng80b.shtml
Spraying water into [After MAF] might drop air temp by 20F resulting in higher air density [in plenum] but at best this would be less than 2% [4 or 5 HP]. But the amount of water vapor [humidity] might [will] decrease the O2 amount in the intake charge so it probably would be half the theory say 2-2.5 HP.
Real on the road tests not dyno would be required to determine which way the gains/losses fall?
* excessive gasoline is used under acceleration to SLOW the combustion [flame speed propagation thru combustion chamber].....time in milliseconds from spark plug to the edge of cylinder or when 68% of fuel mass has reacted. The ideal time results when the most force is applied to the piston to push downward WHEN the rod is 16 degrees after top dead center.
When max force occurs too soon the rod drives the force straight downward and pounds the crank bearing reducing its life [called knock or preignition].
Water [even with ethanol to avoid freezing] is less expensive than gasoline but storage and proper pumping and metering adds cost vs just making the normal [14.7 AF] mixture richer via longer injector open time during acceleration.
The question is how long will you operate at wide open throttle vs gasoline cost.
Does water have an advantage over excess gasoline, not really other than the heat of vaporization is higher.
http://www.audiworld.com/tech/eng80b.shtml
Spraying water into [After MAF] might drop air temp by 20F resulting in higher air density [in plenum] but at best this would be less than 2% [4 or 5 HP]. But the amount of water vapor [humidity] might [will] decrease the O2 amount in the intake charge so it probably would be half the theory say 2-2.5 HP.
Real on the road tests not dyno would be required to determine which way the gains/losses fall?
Registered User
Joined: Oct 2005
Posts: 2,381
Likes: 0
From: NY
NA will benefit Water/Meth Injection only if you run more timing. Spraying meth will increase your Octane Rating so you can run more advance timing or more boost if you are FI'ed. Other than that then there is no advantage if you leave your timing curve untouched.
Joined: Aug 2006
Posts: 7,244
Likes: 23
From: Austin, Texas
Originally Posted by FI'ed G
NA will benefit Water/Meth Injection only if you run more timing. Spraying meth will increase your Octane Rating so you can run more advance timing or more boost if you are FI'ed. Other than that then there is no advantage if you leave your timing curve untouched.
-Sean
Registered User
Joined: Oct 2005
Posts: 2,381
Likes: 0
From: NY
Originally Posted by Nismo G
I have a +2 advanced timing on my car...i think that is what he advanced
-Sean
-Sean
Joined: Aug 2006
Posts: 7,244
Likes: 23
From: Austin, Texas
Originally Posted by FI'ed G
Who tuned your car and what EMS? Your tuner will be able to let you know how much more he can advance your timing without knocking. Timing changes are done on a dyno since that is the only way to find out if adding some timing does actually yield some power. Water/Meth really benefit FI cars since it help cool down the IAT and at the same time it allow them to run more boost or timing advance.
-Sean
Aquatune
I heard about this www.aquatune.com It is a water injection kit that claims to get more hp, tq and better MPG. It says it produces hydrogen molecules or some crap that make gas burn more effeciently I am not sure. I checked them on bbb.com and this company was in business since 2000, so they look legit. Also they show a video clip from some newsroom where they tested the product and it seems like it works. ANY FEEDBACK?
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