Rep Power: 0

ok forget the messed up title

im making my own intake (ghetto fabulous ), using the stock air filter box and mounting tubing coming out from that box.

got me some questions about like air resistance, flow, stuff like that

BTW, im using heavy duty PCV or PVC (whatever i forget) plastic piping. heat resistant, i think...

1. with the resonator off and the air going into the air filter box only, it gave me a loud sound and noticeable and improved air flow, especially at high revs. when putting a 2 inch piece of tubing inside the hole of the air filter box, it got quieter. would a bigger diameter piping give a louder sound?

2. with the bigger diamter piping, would it yield a huge loss of torque since the opening is too large and there isnt enough vacumm pressure to "motivate" the air into the throttle body?

3. when making this ghetto intake tubing, should i have the same size diatmer tubing (roughly 2.3in) to make up the intake tube, or use a larger diamter tube as the tube travels away from the air filter box?

4. tube with no filter on one side and use stock air filter/k&n drop in filter, or no filter box filter and use a cone filter at end of tube?

5. could i use something to put/apply on the custom intake tubing (thats made of PVC plastic) to make it even more heat resisiant (like applying some sort of tape or spray that acts like a heat shield)?

6. intake tube air inlet position: stock position? (behind battery, near front headlight), or AEM SRI location (near the front of the engine bay, in the open area where the resonator used to be)? or straight down behind the transmission? i want a bit of cold air...

7. am i crazy? ive spend $1 for the tubing so far, i need input/other ideas, cause i want to conserve money and hopefully this is SOMETHING good....


THANKS!!!!!!!!!!!!!

 
Rep Power: 0

eh...PVC pipes are NOT designed to take that kinda heat, even though it says heavy duty. U better check the temp. rating of those pipes to make sure they can handle all that heat the engine will be emitting. Also, there's an insulating tape thing u can get to wrap around ur piping, and i have no clue what its called >_<
now, onto your points:

1. bigger diameter usually leads to louder sound
2. no, our d17's are too small to notice any huge gains or losses, there isn't enuf "motivation" to begine with, just enough to run ourselves economically (ULEV) ^_^

3. it doesn't matter, it would be less hassle to keep the diameter the same though

4. i'd use a cone filter

5. Jethot (r) spray... i think that's what its called

6. get the cone as far away from the engine as possible, or build a custom box around the cone and open it on one side to allow cold air only. the cone will be placed inside that box (this setup should be cheap, space would be the only issue here)

7. ur not crazy...dunno how well this will work, but it will work that's for sure. and if you're really desperate to save $$, buy a generic one off ebay for like $20

have fun! ^_^

 
Rep Power: 374

pvc pipe will melt, just spend the money and get a true INJEN RACE DIVISION INTAKE.

Injen

 
Rep Power: 0

injencivic is right. buying a quality intake is better than trying to make your own. you have less of a chance of screwing something up.

 
Rep Power: 0

PVC won't melt, just don't rest it on the header. I've made intakes out of pvc for all kinds of cars and trucks and have never had a problem. Did you notice the stock air intake is plastic-duh. Larger piping is not better, try to get as close to the size as the throtle body diameter as you can that make the best velocity for the incoming air, and get the filter away from the engine, a box made of sheet metal or something around the filter will also help. Look at the k&n system. Don't waste 300 bucks on an air filter that one do very much. I can take a picture of the intake i put in my friends civic if you want.

 
Rep Power: 0

^^^ hey could ya? thanks!

 
Rep Power: 374

Ya, but you wont get the gains you will get from a true cold air intake IMO.

Injen

 
Rep Power: 0

I would get some coke cans and wrap them around it and say your sponsored by coca cola hahha or even sprite, or pepsi
that would be cool!!!!!!!!!!!!!!

 
Rep Power: 376

wtf are you talkin about....mine is plastic as well as the K&N FIPK...

they do not melt.....and the K&N is some heat resistent plastic...but mine im not sure...and it shows NO sign of melting

 
Rep Power: 0

I understand the custom but just go buy some cheap ebay intake that solve ur problem not knowing what kind of problem you with go with ur custom intake, but everthing is possible/

 
Rep Power: 310

You wanna conserve money? Just save yourself the trouble and get a cheap one off ebay...like kloverz said..

 
Rep Power: 0

how about using this????


NACA Duct Hose

3" wire reinforced hoses will not collapse so that continuous air flows to high temperature areas.

#60-020 Neoprene for standard temperatures 10' per box $49.95
#60-030 Silicone for extreme temperatures 11' per box $59.95
#60-018 Helmet Hose with cuffs $29.95

 
Rep Power: 0

Odds are, making your own intake will result in hp and/or torque LOSSES. An extensive amount of engineering went into designing the stock intake - to balance performance v.s. sound.

You can get *minimal* gains from an aftermarket intake. I'd say if you can get 5hp from one you're extremely lucky in our cars. Sometimes I get jealous. My brother installed a K&N FIPK and headers in his 1996 Z-28 and got a 25 hp gain at the WHEELS (dyno tested). You AREN'T going to see anything close to that with the civic. I/H/E = 10hp max, if running the best components out there.

Better off spending your cash on something that really improves performance - add it to a turbo-fund. Upgrade the suspension. Spend it on your audio system...

 
Rep Power: 0

geez it was only $5..... plus, its done already

im not doing this for the power, im doing it just for doing it. it was a good learning experience. i have done NOTHING with cars before this....

plus, it looks kinda cool and different cause it doesnt really look like any aftermarket intake, prollly cause it isnt as good haha

 
Rep Power: 376

the only ppl that put engineering into intakes are the ones that cost 150+

 
Rep Power: 361

I would just not sleep well looking under the hood of a car and seeing PVC for an intake. . It's just disturbing.

 
Rep Power: 374

i agree, just think about what people will do when they see what kind of "intake" you have.

Injen