socorob Posted February 17, 2014 Share Posted February 17, 2014 As stated, has anyone put the ZX air cleaner into a Z? I have mine apart right now and am trying to find out if the enclosure will fit up there without interfering with anything. I want to modify the exit piping to 3.5" pipe, but would prefer to know for sure if it fits before I start cutting and welding. All the body parts are off the fri t of my car right now. I would appreciate any pictures someone may have so I don't have to assemble the while car back to see if it fits just to have to take it all back apart again. Thanks. Quote Link to comment Share on other sites More sharing options...
FricFrac Posted February 18, 2014 Share Posted February 18, 2014 Is there a reason you want to use the 280ZX cleaner? It's gigantic and heavy compared to a K&N cone filter... Quote Link to comment Share on other sites More sharing options...
socorob Posted February 18, 2014 Author Share Posted February 18, 2014 Don't necessarily want to use it except I have it and it would be easy to mod to make a 3.5" exit tube. I don't want to use a cone filter- I have one of those too- because I've been swamped by an 18 wheeler before in a thunderstorm and worried about the cone sucking in water. Just trying to find something with the filter a little more protected for daily driving and will throw the cone on there for autox,etc. Quote Link to comment Share on other sites More sharing options...
Tony D Posted February 24, 2014 Share Posted February 24, 2014 The stock filter housing from a 280Z fits just fine, and with a K&N Filter in it, showed me nothing at the dragstrip or dyno over the CAI that was on there before hissing like a snake on a bad acid trip. A ZX is bigger, and if you are going to use a ZX Filter, use one from a Turbo as one would think with the increased airflow the element would accommodate increased displacement or higher rev flows better... Quote Link to comment Share on other sites More sharing options...
bigbreak_2000 Posted February 28, 2014 Share Posted February 28, 2014 Sorry I cant answer your q on fitment of the 280zx filter housing in an earlier z. I share the quest for a better intake system. I had a big cone filter on my car mounted in front of the radiator but was also worried about water filtration. And I've often seen little stones and road debri caught in the filter element. My experience on the housing itself is this: The k&n oval filter that fits in this 280zx filter housing flows about 500 cfm. I was told that by the k&n technician. The 90 degree elbow on the 280ZX NA filter housing has a relative small ID (2.5 in). The inlet size and tubing ID is going to be your restriction. So, I modified the stock NA 280ZX airfilter housing so I could fit a 3 in ID tube that goes to the engine. Before I went through this trouble I should have done my homework. I later found out that the 280zx-turbo housing already has a larger 3 in elbow and also 2 intake ducks. This flows appropriate for my application (3.2 stroker making 240+whp). I bought a turbo filter housing off ebay for $10, cleaned and painted it. It looks all stock and I have not noticed any performance loss going to this setup vs. a open cone filter. Quote Link to comment Share on other sites More sharing options...
socorob Posted February 28, 2014 Author Share Posted February 28, 2014 I have 2 NA boxes. I cut the inlet off one to weld on the other like the turbo has. I will get some 3.5 pipe to weld for the outlet. I was hoping to hear that it fits up front before doing any work or having to put the whole front back together just to check fitment. Do you have a picture of it? Quote Link to comment Share on other sites More sharing options...
Tony D Posted March 4, 2014 Share Posted March 4, 2014 Interesting, I wonder why I suggested the Turbo ZX box with a K&N Filter in it.... With some cutting on an old cover you can make an 'open element' that flows well and is dirt cheap... None of this stuff bolts in without fabrication. The only thing that does is a 280Z air cleaner, and then only if you cut the bracket out of the 280Z and transfer it to the earlier car. 3.5" is way overkill for anything you're going to put in there. If a 9,000 rpm 320+RWHP running triple TWM ITB's can breathe just fine (less than 4" Water Column Restriction at full load) I'm thinking whatever you put in there will breathe just fine. The restriction will be what filter element you use, not the piping size. 3" like on a standard turbo, as stated, will work fine and with a K&N filter in that housing, the restriction (pumping losses) are much lower. Quote Link to comment Share on other sites More sharing options...
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