cold air intake

[dohcfiend]

i have built a cold air prototype for my car. it was surprizingly cheap to build. i have a pic of it, but i just kinda snapped a shot with a friends digital camera and e-mailed it to myself and it is too big pixel-wise for this board. if anyone is interested just reply and i will e-mail you the pic i have and you can let me know what you think. don't be too harsh it is just a prototype after i get my hands on a welder and some more resources i will build a prettier finished product.

also if anyone knows how to shrink the pic i can also do that and attach it to the post.

[pocket-rocket]

http://www.dominativ.com/thotor/

Free download for a pic editing program.

[Lyle's GTP]

Send it my way dude.

Lyle

[bluegtp]

you want to send her my way too? also, if you have Paint on your computer, you can easily resize in there. I think its under Image->Stretch/Skew. Also, I was just wondering if anyone knew any real gains out of the cold air intake system. does it actually do anything, or is it just myth?

Danny

[34T]

Bobby: I haven't seen a pic, but have you worked in/considered a water deflector/shield or 'stopper' (for lack of a better word)?

I mention this 'cause last fall a 'ricer' came to a sudden, unplanned stop in front of my house. He hit a puddle maybe 4"-5" deep and his cold air intake took a big gulp. That did it; the car stopped like the emerg brake was yanked. Right in the middle of the puddle. Prob not all that healthy for the internals, either!!! and it DID NOT want to start. He ended up leaving it there (his girlfriend was impressed, getting out into 4" of water!!) with its $5000- $10,000 of nice stuff....... for the rest of that day till he could get it dried out. It was an eye opener for me as I hadn't given any thought to the importance of 'water'...... till then. Now, when I do my cold air intake I am going to be thinking about that VERY much.
just my two cents
good luck
gp

[dohcfiend]

blue gtp wrote:

you want to send her my way too? also, if you have Paint on your computer, you can easily resize in there. I think its under Image->Stretch/Skew. Also, I was just wondering if anyone knew any real gains out of the cold air intake system. does it actually do anything, or is it just myth?

Danny

hmm.... where do i start..ok. the gains depend on alot of things, air temp, elevation, the effiency of your filter, the length of the tube, and last but not least how fast you are going. me personally i know it works by doing sensor readings of the iat sensor on a scanner. after i built it it took approximately 10 min to install. be4 i installed it i drove 5 mi adn came back outside tem was in the mid 60's the sensor read about 112* after i installed it i done the same thing and the sensor read 86*. and the reasoning behind that is the colder an intake charge is the denser it is. meaning more o2 molecules are present at ignition.

i can't say for sure what kind of hp gains it would give without a dyno comparison and that might not be accurate being how the car is not moving. if i had to guestimate i would say about 4 hp@ 75 and maybe 7hp@90+. if u really want to see benefits i would suggest trying it on a tgp. but just to clarify cold air is NOT ram air. the intake tube would have to be drastically shortened and air would have to be focefed via a scoop or a hole in your fascia.

[dohcfiend]

34t wrote

Bobby: I haven't seen a pic, but have you worked in/considered a water deflector/shield or 'stopper' (for lack of a better word)?

I mention this 'cause last fall a 'ricer' came to a sudden, unplanned stop in front of my house. He hit a puddle maybe 4"-5" deep and his cold air intake took a big gulp. That did it; the car stopped like the emerg brake was yanked. Right in the middle of the puddle. Prob not all that healthy for the internals, either!!! and it DID NOT want to start. He ended up leaving it there (his girlfriend was impressed, getting out into 4" of water!!) with its $5000- $10,000 of nice stuff....... for the rest of that day till he could get it dried out. It was an eye opener for me as I hadn't given any thought to the importance of 'water'...... till then. Now, when I do my cold air intake I am going to be thinking about that VERY much.
just my two cents

i haven't had any problems with water yet. but i haven't ran through any monster puddles either. mine is different though. most setups have the air filter at the end. mine is in the beginning right after the maf sensor. but the water issue is a concern for me. but for now the engine isn't even in the car. so it is a very minor concern. i was thinking about maybe unplugging it after the filter when it is raining. but thanx for the cents.

if u want to see picks just pm me your e-mail and i will send them to u. i promise i won't spam u or anything. and if u can shrink them just e-mail them back and i will post them.ltr.bobby.

[pocket-rocket]

Water should be a concern! Water does not compress like air. If your engine takes a nice big swig of mud puddle, it will either blow holes in pistons, or bend rods, or both (even nicer!). So do yourselves a favor and put it up at least 8 inches or so to be safe. Most people that do CAI move the battery to the fender well, and run the tube where the battery used to be and into the fender.

[Anonymous]

Water should be a concern! Water does not compress like air. If your engine takes a nice big swig of mud puddle, it will either blow holes in pistons, or bend rods, or both (even nicer!). So do yourselves a favor and put it up at least 8 inches or so to be safe. Most people that do CAI move the battery to the fender well, and run the tube where the battery used to be and into the fender.

Mine is up about 9 in from the bottom of the GFX, so about 16 from the ground. I havn't had a problem yet. I have gotten waer up in it, but the water evaporates from engine heat b4 getting to the lower intake.

[Lyle's GTP]

Isn't the vapor still going into the engine though? Also that's a pretty fast process, at the rate the air flows into the engine I kinda think it wouldn't have time to evaporate. The engine is hot, yes, but I wouldn't say it's hot enough to instantly evaporate water.

Lyle

[pocket-rocket]

Evaporated water shouldn't hurt it. As long as it's not a shitload. Ever hear of water injection? It's mostly for FIA though. Lowers intake charge temp, and prevents detonation. It also kinda cleans the engine. Aaron has the right idea and would have to drive through a lake to ruin his engine.

[dykz34]

Not that it has to do with our motors.... but a friend of mine in his turbo Talon hit a HUGE water puddle last summer. The water came up over his hood! Anyways, he bent a rod from sucking in water, had to rebuild the motor. So ya, I'd say you wouldn't have to worry about a little vapor. Hell, like Jon said, a little vapor would be BETTER! Helps keep the air cool, and more dense.

[Anonymous]

Not that it has to do with our motors.... but a friend of mine in his turbo Talon hit a HUGE water puddle last summer. The water came up over his hood! Anyways, he bent a rod from sucking in water, had to rebuild the motor. So ya, I'd say you wouldn't have to worry about a little vapor. Hell, like Jon said, a little vapor would be BETTER! Helps keep the air cool, and more dense.

I am having trouble believing any amount of water could get by the turbo without evaperating.

[dykz34]

Ya, you're right--as always. The rod bent itself.

[Anonymous]

Ya, you're right--as always. The rod bent itself.

I was just wondering how water gets through a 400-500 degree turbo, that's all.