custom air cleaners
Thread Starter
Intermediate
Joined: Apr 2003
Posts: 25
Likes: 0
From: Detroit mi
custom air cleaners
Has anyone hade a custom air cleaner for their car? I measured the space between the top of the radiator and the hood and we are giving up almost 1 inch if using the stock air cleaner housing. If you have made or bought something please post pics.
Race Director
Joined: Jun 2004
Posts: 13,963
Likes: 709
From: WI
There are a few people that have made custom setups. By giving up almost one inch, I take this to mean you think the air filter housing should be larger? The size of the stock system is fine, it's size can support a hellva lot of HP.
Pro
Joined: Jan 2003
Posts: 664
Likes: 119
From: Albany OR
phughes69,
It has taken me a while to get my customer air cleaner box to the point shown below in the pictures. It still slightly dimples up the hood so I have more work to do in the area where the silver tape is above the air filter. But at this time it will work for me at the next couple of track day and then over the winter I can work to make a better fitting air cleaner box. I plan to modify/re-make this one as well as make something that is C5/C6 like. My new engine required much more air than the stock 85 filter box would flow and I also no long use a Mass Air Flow (MAF) system. This allowed me to switch to the inlet duct from the 89 to 91 C4’s that did not have the MAF sensor. This is not a direct swap, the air clean box from those later C4’s will not fit the early C4’s because of the changes they made to the radiator position (maybe you already know this). Anyway here are the pictures, let me know if you have any question and I can try to answer them.
Brian
It has taken me a while to get my customer air cleaner box to the point shown below in the pictures. It still slightly dimples up the hood so I have more work to do in the area where the silver tape is above the air filter. But at this time it will work for me at the next couple of track day and then over the winter I can work to make a better fitting air cleaner box. I plan to modify/re-make this one as well as make something that is C5/C6 like. My new engine required much more air than the stock 85 filter box would flow and I also no long use a Mass Air Flow (MAF) system. This allowed me to switch to the inlet duct from the 89 to 91 C4’s that did not have the MAF sensor. This is not a direct swap, the air clean box from those later C4’s will not fit the early C4’s because of the changes they made to the radiator position (maybe you already know this). Anyway here are the pictures, let me know if you have any question and I can try to answer them.
Brian
Pro
Joined: Jan 2003
Posts: 664
Likes: 119
From: Albany OR
So I have made another air cleaner system for my track car. The one in the post above did not work to well. I made it from .040”T aluminum sheet which was not rigid enough. Also the fit was not that great. So I made a new version out of .060”T aluminum and it is similar to the C5/C6 style air bridge-air cleaner system. See the pictures below. Track testing will come in late May.
Brian
Brian
Pro
Joined: Jan 2003
Posts: 664
Likes: 119
From: Albany OR
Brian
