Looking for ideas on making or buying a cold air box for 48IDA Weber on a 12a.
Thank you

 

Different intakes and porting places the carb at different locations; no one air box will fit all motors and intake manifolds. You need to figure out the hood clearance you have between the bottom surface of the air box (which is also the same surface as the air horn flange) and the hood. It is hard getting enough hood clearance. One way to measure is to set a base plate on your carb. Make tall cones of modeling clay, and close the hood, mashing the cones down. Now measure how tall each cone is, and then you know how much hood clearance you have at each location you put a cone.

Note that the hood curves left to right, and also curves down in the front. You have less hood clearance in the front, and less hood clearance on the passenger side of the hood.

I use the hood as the lid to my air box. I put a piece of soft foam as a seal around the top of the box. When the hood closes, it is all sealed up.

I have photos, but they are too big to attach. PM me with your email address, and I will email the photos to you.

 

Xtreme Rotaries in OZ makes a fiberglass version...here are some other pics I found...

 

Pirkka's is also very clean.....and you know it works 'cause he WINS!http://www.youtube.com/watch?v=I9WXE...eature=related

 

Thanks for the info and ideas......
Guess I will make my own

 

Jaime do you know if Pirkka sells those? Very nice car for sure. I checked to see if Xtreme rotaries had one they made, but the site is under construction. I'm in the market for one as well, or spend a quite a bit to have one fabbed for me. Here is another example that's on my EP car. Not quite cold air as I would like, but I'm working on a duct where the lights are.

 

I don't think Prikka "makes and sells" anything...I believe he is just the driver..and one hellova driver he is! The one you pictured would be real easy to fab up anyway....the hardest part is sketching out the baseplate with the proper holes and making sure it clears the hood.

The Xtreme version looks like the first pic, but its fiberglass...and uses straps I believe to close it up....or latches.

 

I have a carbon fibre one for my 3:



Very light and strong (plus bling factor!!)

 

That is sick...where and how much!@!?!

 

A few years ago, someone posted a writeup of their sheet metal airbox that was ducted into the scoop on a TII hood. IIRC, they simply used a K&N panel filter between the box and the hood. Like I said, it has been a few years since I saw this and it might have even been in another forum.

 

Jaime,

New Zealand, and expensive! There is an email address to buy these on the Car Domain link (pg 5 I think) below:

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Interesting. It uses the standard K&N filter for the IDA series, and the lower part of the filter housing. Thanks for the link to the great pictures. As speedturn discussed, clearence is going to always be an issue.

 

Wonder why my bro didn't look into this...

 

I had a similar box on my FB, but it has a single 3" pipe and a K&N cone filter on it. It flowed so poorly that the car wouldn't rev past 7k... Now I'm in the process of designing a new box, so I'm bumping this incase people have more pictures of other ideas.

 

I'm going to be switching to the bigger velocity stacks http://www.thesamba.com/vw/classifie...l.php?id=50845 so I was considering using one of K&N's sprint car air boxes and was wondering if anyone has used them and seen how they mount. The website doesn't really contain that much info.
http://www.knfilters.com/search/prod...?Prod=100-8569

I'm currently using the stock stacks and a custome air box that flows like crap...