Thread: FI-R: Turbo VQ35 Spec V.. fire up video!

Originally Posted by g35

Man that looks nice. Where is your shop located at?

My "shop", is my garage.. I work from home, and have done so since 2005, when I lost my 4000 square ft building to Hurricane Katrina. We're in south Louisiana (Houma, LA). Less overhead, less stress, and more time with my family. You don't need a big shop with 10 people working for you, to build nice stuff.

Travis

no block off plate or spacers for that bad boy???

Nope.. vias delete and spacers really aren't beneficial for this project.

Originally Posted by 02 VQ35 6SPD..MAXIMA

no block off plate or spacers for that bad boy???

A few pics..





And, I snapped these when I was working on the fuel system.. I can't remember off hand how many miles James' car has on it, but, IIRC, it's around 60K? I cut the canister open from the fuel tank, to show you guys what kind of gunk can build up in the internal filter, and just how tiny the orifice is, that the fuel has to pass through after the filter.

Keep in mind, that this filter is white when it starts it's service life...


I know that it's not a very good pic (camera phone), but, look at the pepper looking stuff on the ground. I simply tapped the filter one good time, and that is what came off of the exterior surface.. Imagine what's embedded in the filter.


Now, this is the really disturbing part.. This is looking into the canister, from the bottom (cut off), where the filter would usually sit. The tiny hole in the center, is where your fuel passes through, after it goes through the filter. From that tiny hole, it travels through the plastic, convoluted tubing, out to the plastic housing's exterior nipple. I cut the top of the canister off, just so I could get a set of calipers into measure the hole. It has an ID (inner diameter), of just .150"!!.. That's one hundred and fifty thousanths.. or, a little more than an 1/8 of an inch. Scary... And, we wonder why people have random lean spikes/blown motors with turbo setups?! The messed up part, is there's no fix for this, because if you cut the filter apart to enlarge the orifice, you trash the entire assembly. It cannot be put back together.. I'm going to come up with a fix for this, and soon.
For this reason, I went ahead and converted James' car to a return style system. I completely did away with the factory crap, and the car now has no fueling issues, up to about 475whp. Cheap insurance, when you consider the cost of replacing a motor, because of inadequate factory parts.
I'm going to make a seperate thread about this fuel stuff.. but, I figured that I'd post it here, since it's on James' car.


Travis

just out of curiosity what made you decide to run the dp over the tranny? most boosted maximas I've seen have the dp run under the tranny then up.

Originally Posted by paperdukie

just out of curiosity what made you decide to run the dp over the tranny? most boosted maximas I've seen have the dp run under the tranny then up.

Space constraints on a Maxima will not allow you to run it over the trans.. The ABS module/lines are in the way.. Running it under the trans on the Spec V is an option, but, ground clearance suffers. As it is, we already have one pipe running under the car.. It is about even with the engine cross member, and as a rule of thumb, I don't like to go any lower than that.

Travis

Amazing. Cooling the intake air with windshield washer fluid. But I don't get is how you can use water at all without hydro locking the engine? (as you said Windshield washer fluid is 60% water, and water is not compressible)

When picking out windshield washer fluid I guess you would just check the label and look for anything that is just meth and water?
Can you still use the washer fluid on the windows?

Very nice setup.

Originally Posted by njord

Amazing. Cooling the intake air with windshield washer fluid. But I don't get is how you can use water at all without hydro locking the engine? (as you said Windshield washer fluid is 60% water, and water is not compressible)

When picking out windshield washer fluid I guess you would just check the label and look for anything that is just meth and water?
Can you still use the washer fluid on the windows?

Very nice setup.

You're not squirting huge volumes of liquid (water) into the motor.. The water and meth comes out as a mist, from a very fine nozzle, placed in the intake tract. As it goes into the engine, the mist turns into vapor (meth), and steam (water). The heat that it takes to create steam, and turn the liquid methanol into vapor, is the heat that is pulled out of the engine/combustion chamber, and charge air temps. Water absorbs heat, creates steam, and in the process, helps to keep the combustion chamber/exhaust ports clean of carbon. The methanol also absorbs some of the heat, as it turns to vapor, and it also increases the net octane rating of the gasoline/methanol vapor in the combustion chamber.

Travis

So I was talking to my mechanic friends about this and they all call shenanigans (bull shit) Reasons ranging from windshield washer fulid having many other chemicals in it that could cause problems, to just straight up hydro locking your engine. I showed them this thread but all the videos were removed.

So I'm looking for proof to show them. Some of them are Real mechanics meaning they've built engines, custom turbo jobs, and engine swaps. I'm hopping Trav will repost his videos (why were they taken down?) or offer some proof I can show them.

Tell your friends, to pick up a book, or read an article about meth/water injection. It's been around for a very long time.

The only chemicals in the type of washer fluid that we use.. (blue stuff), is Water (around 40-50%), Methyl Alcohol (methanol, around 40-50%), and a few drops of blue coloring agent to distinguish it from other types, which may contain detergents, glycol, etc.. You CANNOT use those types.. only the blue stuff.

Here's the MSDS sheet on blue washer fluid.. The only thing in it (besides very small traces of blue coloring), is water and methanol.

Equiva Services - MSDS

If you wanted to buy 100% methanol, and mix it 50/50 with distilled water, then, you would have the same exact thing that's in blue washer fluid. You could even put a few drops of blue food coloring in, for effect. Or, you can go to Walmart, and buy it for 1.50 a gallon.

You cannot hydrolock your engine with mist/vapor.. To hydrolock a cylinder, you would have to introduce liquid (of any kind), with enough volume to completely take up the squish volume in the cylinder, when the piston reaches TDC. We are talking about a fine mist, which atomizes upon contact with the 200+ degree cylinder head's ports, along with the gasoline mist that is being sprayed from the injectors.

Water (even in the form of vapor), has a very high degree of thermal latency (absorbs heat), as does methanol. The methanol also increases the net octane of the fuel (gas and methanol mixed), as it enters the combustion chamber. Both are beneficial in terms of supressing detonation in a turbocharged engine, and as a means of "chemical intercooling".

I appologize for removing the original video.. I took that video, and a later video, with highway pulls, and combined them into one video. Here it is..

[ame=http://www.youtube.com/watch?v=PnI9JOk1SWw]YouTube - FI-R: Turbo VQ35DE Sentra Spec-V[/ame]

Make sure to watch it in 720p..

I'd be more than happy to explain things to your buddies, further, if necessary.. Tell them to join in the discussion.

Travis

Originally Posted by njord

So I was talking to my mechanic friends about this and they all call shenanigans (bull shit) Reasons ranging from windshield washer fulid having many other chemicals in it that could cause problems, to just straight up hydro locking your engine. I showed them this thread but all the videos were removed.

So I'm looking for proof to show them. Some of them are Real mechanics meaning they've built engines, custom turbo jobs, and engine swaps. I'm hopping Trav will repost his videos (why were they taken down?) or offer some proof I can show them.