Hey we all know that our 3.5 is very strong when it's cold outside. Today is 35F outside, my car was so strong - felt like extra 10-15HP. Why such a difference.
Till what tempreture the decrease in tempreture is beneficial to our performence?

 

All cars benefit from cold air. Every -10deg = +1% HP (approx). Bigger engines see more powerful gains.

 

My question is how low can you go safely for the engine, and how can you achive cold tempreture.

 

dont think you can 'go too low' for the engine. the cold air isnt gonna freeze anything in your engine since it warms up as it enters, and as it gets colder the density of air increases, thats pretty much the reason for a power increase. denser air allows more fuel to be mixed with it, also explains why gas mileage decreases in the wintertime... To maximize the amount of cold air you pull in, hook up some piping to collect air from outside the engine bay, such as the one on my homepage. hope this helps

 

you can go as low as is safe for the oil, which, depending on the oil can be as low as -76`F.

 

How can you get to -70F temps.? Is there any way. And is it going to mean an about 10% encrease in power?

 

move to canada after you get the oil moving... but then again, i wonder if the colder air is denser so it'll have more friction, or if the ground is so cold at that point the tires have a harder time hooking up, or if the goo that makes your knuckles work will freeze so you can't shift...

 

No but seriously, is there any way to make the air cooler, lets say it its 35F outside how can I get -25F to the engine?

 

move to canada... seriously.

it'll take more energy to lower the temp than you'll get in return, so you can't really lower the temp without a 'cost' somewhere.

you could go nitrous... not colder, but it'd give you a boost of power when you want it.

but you can't make the engine bay any cooler than the air it's sucking in, sorry.

And if you're thinking about that ebay resistor piece of **** that's supposed to fake your car into thinking it's colder than it really is, just paypal me the money and I'll send you a Type R sticker and you can say you feel the difference and we'll both be happy

 

Sure. CAI, TB spacers, Intake MF spacers, and the best would be Cry02 by Design Engineering for instance will work in the summer and hotter temps. I'm gonna test that soon but first need a decent scantool. Not so much gains starting at 35F though. That's pretty cold to start with.

 

did you read his post?the answer is "no"

 

Has anyone ever heard of putting an intercooler on a N/A engine. Please don't flame me

 

Think about how an intercooler does its work...then read your question again. You'll see how silly it sounds

 

There is not need to charge air (intercool it) if it is not being compressed in the first place (turbo). When A car is boosted the air is compressed and made hotter, the IC cools it down before it goes into the engine; in laymans, I can't go into further detail because I don't know the technical stuff. Not a bad question though.



Back to the subject: When ambient air gets too cold the engine has to work harder and consequently burns more fuel. That's one downside of cold air.

 

wanna hear a silly question? Heres one: "has anyone put in conala oil instead of regular oil in the motor? if so any differences"


BTW, no question is too silly if the other person doesnt know much.... thats how we all learn...

 

I was just showing how you can get down to 35deg if it's hotter than that to begin with since it's not gonna be 35deg all the time (I'd hope).

With enough $ why couldn't you get the air temp down further? Yeah, we're talking below the F freezing point. What's colder than 32deg? C02, NOS, solid C02 (dry ice). What about an entire double layer intake pipe insullated / surrouned by something? With 1-3 chilled bulbs inside? Or some wacky cold air injection system into the airstream.

Sure diminishing returns after a while and as ABDomega said, maybe too cold is bad at some point. Then you look at cooling the engine, fuel, and other items. I for one plan on trying next year for that extra 6-11hp (8-13hp on a 2.3K engine).

 

Hm... Thats cool, the only thing is that how cool can you go without harm and max power increase? And dont flame me people, it is a good topic to start with.