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Author Topic: R32 Cold Air Box - DIY  (Read 3182 times)

BADHAB|T

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R32 Cold Air Box - DIY
« on: December 23, 2010, 08:24:16 PM »
Well, I had put off doing this for a very long time.... I finally found some motivation and made a cold air box.
I'm not 100% happy with it because its not perfect but it will have to do....
There is still 1 small area left to do on the other side of the i/c pipe, but that can wait.
Cost = less than $20
I had to buy -
Split cable wrap stuff $12 iirc
Boot seal (from an S14 at pick a part) $6
Skin - yep, the car gods got yet another involuntary sacrifice. Cost me nothing as I didn't bother using a plaster lol
The metal cost me nothing, I got it free years ago from a place I used to work at. I used most of it when I did the cold air box on my old R33 (yonks ago) but had just enough to do this car (hording parts pays off :D)
I use the split cable wrap on the edges of metal so there are no sharp edges and metal on metal contact. A small cable tie wrapped around it keeps it in place (you will see them in the pics).
The boot rubber has metal through it so its perfect to use as it can be crimped, I use a pair of pliers to 'crimp' it to the sheet metal - it holds very well!

I'll let the pics do the rest of the talking!

First piece cut to the rough shape


Back piece cut





Hole for the i/c pipe made




Hole for the intake pipe made




Main part of the box finished

BADHAB|T

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R32 Cold Air Box - DIY
« Reply #1 on: December 23, 2010, 08:25:08 PM »
I made a piece to cover the wheel well and 1/2 the i/c pipe. It ended up bent in the wrong area, but it turned out ok as the AFM wire needed somewhere to come through plus it had to be bent down a fraction or the intake pipe was going to hit it too. I'm certainly no metal worker lol. The angles were a bas+ard to deal with as the wheel well slopes away as it gets closer to the engine.










« Last Edit: December 23, 2010, 08:48:03 PM by BADHAB|T »

gtsr

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R32 Cold Air Box - DIY
« Reply #2 on: December 23, 2010, 08:28:29 PM »
Awesome. :)

BADHAB|T

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R32 Cold Air Box - DIY
« Reply #3 on: December 23, 2010, 08:34:01 PM »
That is now combined with a cold air intake I made about 12 months ago.
Is 125mm overkill? Pfft! :D Its not totally clear in the pics, but I have a 125mm Y fitting shaped to fit around the fmic piping and shaped to fit in the factory hole in the bumper for to direct the maximum airflow into the ducting.








r33per

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R32 Cold Air Box - DIY
« Reply #4 on: December 23, 2010, 08:35:29 PM »
hey bad habit can you take a pic of the air vent going to the box
Understeer is when you hit the wall with the front of the car
Oversteer is when you hit the wall with the rear of the car
Horsepower is how fast you hit the wall
Torque is how far you take the wall with you


Originally Posted by Stalk3r
could well be the radiator overcooling...
pleb at works honda has an aftermarket alloy radiator that overcools to a point where vtacks stop working because the oils too cold, its hilarious

BADHAB|T

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R32 Cold Air Box - DIY
« Reply #5 on: December 23, 2010, 08:36:28 PM »
Hopefully all that give someone some ideas on how to do it.
Not saying mine is the best way to do it, but it works :D

BADHAB|T

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R32 Cold Air Box - DIY
« Reply #6 on: December 23, 2010, 08:38:43 PM »
Quote from: r33per;522066
hey bad habit can you take a pic of the air vent going to the box

The ducting? I just cut a hole in the metal and made it fit :cool: It comes through close to where the factory smic pipes come through. So not a lot of cutting was done!

r33per

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R32 Cold Air Box - DIY
« Reply #7 on: December 23, 2010, 08:43:40 PM »
thats pretty pro
Understeer is when you hit the wall with the front of the car
Oversteer is when you hit the wall with the rear of the car
Horsepower is how fast you hit the wall
Torque is how far you take the wall with you


Originally Posted by Stalk3r
could well be the radiator overcooling...
pleb at works honda has an aftermarket alloy radiator that overcools to a point where vtacks stop working because the oils too cold, its hilarious

r33per

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R32 Cold Air Box - DIY
« Reply #8 on: December 23, 2010, 08:45:48 PM »
does the box itself bolt on to anything else?or it just sits there?
Understeer is when you hit the wall with the front of the car
Oversteer is when you hit the wall with the rear of the car
Horsepower is how fast you hit the wall
Torque is how far you take the wall with you


Originally Posted by Stalk3r
could well be the radiator overcooling...
pleb at works honda has an aftermarket alloy radiator that overcools to a point where vtacks stop working because the oils too cold, its hilarious

b00stinz

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R32 Cold Air Box - DIY
« Reply #9 on: December 23, 2010, 08:47:51 PM »
Would it cause too much lag if I were to get a longer pipe from turbo inlet and move my air filter to where your tubing is behind bumper?

BADHAB|T

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R32 Cold Air Box - DIY
« Reply #10 on: December 23, 2010, 08:50:27 PM »
Quote from: r33per;522084
does the box itself bolt on to anything else?or it just sits there?


The main part is sitting on the chassis rail, it can't move due to the i/c pipe and intake pipe holding it in place.
All other parts are cable tied together :D
Its in there pretty solid though, it certainly can't move!

BADHAB|T

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R32 Cold Air Box - DIY
« Reply #11 on: December 23, 2010, 08:52:29 PM »
Quote from: b00stinz;522085
Would it cause too much lag if I were to get a longer pipe from turbo inlet and move my air filter to where your tubing is behind bumper?

The only problem I could see with that is it sucking in water when it rains! Otherwise, I see no reason why it can't go there....
ffs, I forgot to reply to your pm.... that can be something to discuss at the meet tomorrow lol

con-air

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R32 Cold Air Box - DIY
« Reply #12 on: December 23, 2010, 08:55:58 PM »
Do you actually notice any power differences?

BADHAB|T

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R32 Cold Air Box - DIY
« Reply #13 on: December 23, 2010, 09:02:23 PM »
Quote from: con-air;522092
Do you actually notice any power differences?


Not sure yet, just as I finished it dinner was ready.... and I can't be bothered taking it for a drive now lol.
When I did it on my old R33 it made a noticeable difference!

gtsr

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R32 Cold Air Box - DIY
« Reply #14 on: December 23, 2010, 09:03:26 PM »
Just make sure you don't drive through one of those massive puddles on side of road.