VERY interesting intake info/G35 Intake Temps (Merged the threads)

[Beancooker]

I know that this is a Maxima that the work was done on, but it has me thinking. I will be doing the same testing and wrapping on my car. I'll let you know if the air temps are as different as the ones on the Maxima.

READ THIS

[smockers83]

Interesting indeed. My first thought is that with the G, this shouldn't be to much of a problem. The plastic doesn't absorb heat as much as the aluminum. The filter is at the front of the vehicle, which is a much superior position than the filter on the Maxi, where it gets the cool air rushing in. Your results will be interesting to see.

[slobo7x]

I'm not trying to sound like an ***, but DUH!.

His typical "cold air intake" is drawing hot air from engine compartment. There is no technology built inside that cone to only take the cold air from outside. That's why you buy a name brand like Stillen or JWT intake that comes with a heat shield to block the hot engine air and direct the cold air from outside directly to the intake..

live and learn.

[Beancooker]

I'm not trying to sound like an ***, but DUH!.

His typical "cold air intake" is drawing hot air from engine compartment. There is no technology built inside that cone to only take the cold air from outside. That's why you buy a name brand like Stillen or JWT intake that comes with a heat shield to block the hot engine air and direct the cold air from outside directly to the intake..

live and learn.

Okay, maybe you didn't see where I put that it was a Maxima. Also, JWT and Stillen don't make a decent CAI for the Maxima. Just as well, I have a JWT with the heat sheild on my G. I will still be doing this as an experiment, to see what the air temps are. I know that the heat sheild is *suppose* to block the hot air from coming in, but the z tube still is hot. Hence my point in this experiment. Before I spend the money on getting the wrap, I will be testing the temps. I just have to wait for a break in the rain first.

[joe603]

This is why I wish I bought the Stillen version of the PopCharger. The housing around the filter looks like it would help keep the heat away.

At any rate, short ram intakes are better than cold air intakes due to the length of the intake track....the shorter the better!

[zozoka1212]

I totally agree with you.

Also there is a different between a plastic/rubber and the aluminium heat absorbing ability. The aluminium tube heats up more than the plastic/rubber tube. It is another thing how much the air takes when goes thru the system. I guess will see beencooker experiment. I am looking forward to see the results.

zozo

[slobo7x]

Okay, maybe you didn't see where I put that it was a Maxima. Also, JWT and Stillen don't make a decent CAI for the Maxima. Just as well, I have a JWT with the heat sheild on my G. I will still be doing this as an experiment, to see what the air temps are. I know that the heat sheild is *suppose* to block the hot air from coming in, but the z tube still is hot. Hence my point in this experiment. Before I spend the money on getting the wrap, I will be testing the temps. I just have to wait for a break in the rain first.

Yes but this is a G35 section j/k, I understand what you were talking about..

[USAF_G35_Guy]

Dang it! I was thinkin about designing this a few years ago and put it on the back burner...now someone else has the patent!

http://www.patentstorm.us/pate....html

does anyone know if anyone has actually made one yet? and is in production

[Beancooker]

Dang it! I was thinkin about designing this a few years ago and put it on the back burner...now someone else has the patent!

http://www.patentstorm.us/pate....html

does anyone know if anyone has actually made one yet? and is in production

Sort of. DEI makes (or sells) the "cryo system". It uses CO2 to cool it somehow. I haven't looked into it at all.

I have the test results, but couldn't post them last night, since it was wife night. I am cheating the time clock right now, and HAVE to get to work. My employees are looking at me like "WTF".

I'll post up the results tonight.

[USAF_G35_Guy]

I've heard of it too....works kinda like a dry NOS system and injects into the air intake...like artificial cold air

Feels like your driving your car on a freezing cold day when it's hot outside....to an extent.

[Beancooker]

Okay, most of you know what I drive, but for those that don't... 2004 G35 with a JWT pop charger and heat sheild, and a Skunk2 5/8" plenum spacer. I did some tests of the intake. I pulled the temps from 3 locations. The "under hood temp" is taken 12" in front of the battery. The "filter temp" is taken between the filter and MAF. The "TB temp" is taken about 2" before the throttle body.

I recorded the temps at start up, and while driving. One set was taken first thing in the morning, while the car was cold. The other set was taken after a 15 minute drive then parked and stopped for 10 minutes. Restarted the car, then recorded the numbers.

The first set of numbers shown are the test where I ran it for 15 min, shut off for 10 min, then restarted and recorded the temps.

The second set of numbers is where I started the car in the morning, and left for work.

[Beancooker]

KInda. It doesn't inject the Co2 into the intake to be used in combustion, but into a chamber, where the intake air is passed thru this area, and cooled down by it.

[Q45tech]

Great data ..............If it gets warm again you should see what happens on a 96F day, it is not quite linear with these cool temps vs max op conditions.

[Beancooker]

It didn't even get to 96º once this year. In about 9-10 months I will have an 85º to 90º day. But that is a long way out.

I think this shows that (in the cooler climate area) heat soak from the engine heats the intake tube, and causes warmer air to enter.

[zozoka1212]

Awesome, thanks for sharing the date with us.

But we still don't know what would be if you have the original intake. That would tell us how much the temperature difference infiniti vs aftermarket.

zozo

[USAF_G35_Guy]

really? cool....I must be thinkin of a different system, or maybe I just misunderstood it's application.

Either way....I'm gonna rig an extra duct coming off my stock AC system and have a chamber around my current air intake to keep the surrounding air cold! haha.....it's jerry rig time baby! :P

sounds special...but it could be beneficial I suppose, if someone were just bored one day and decided to build it.

[Q45tech]

Again all that counts is the air temperature in the plenum and every 11F decreases air density by 1.0%.

Normally the ecu enleans the mixture as the temp rises up to around 90F, THEN SUMMER PROTECTION equation comes into play where an excess of gasoline is used to cool the combustion chamber when accelerating.

Just like when coolant goes above 195-199.9F the ecu notes the start of overheat and takes some corrective action [increasing every 5F increments]to try to decrease power and thus heat.

[Beancooker]

That I didn't know. Thanks for the info.

[Q45tech]

Ford has a great patent for using an extra AC compressor/evap to chill a large quanity of water which is used WOT to chill the intake air via an intercooler.

One only needs 5-10 seconds at most of chilled air, just suck all the cold air out of your cabin ---wear ear plugs and auto open rear window at WOT.