I know this has been discussed many times and I have researched but due to the lack of space I need to find a filter with a 5" inlet, and max of 3.5" in length thats including the inlet neck, I dont feel comfortable running a screen (have one on there now) and as the motor is totaly fresh and new I figure this is the time to make a decision......

Vibrant makes one but the filter totals 4 1/4" with the inlet neck so its slightly to big and I cant find nothing else

Suggestions please, thanks

 

shoot GoodfellaFD3S a pm, he uses a short filter on his 500r, not sure if it will work for yours though.

 

Do yourself a big favor and get the largest area air-filter you can. If I could find the picture of the one guy I did a 42r for you'll see what happens at 20+psi. The air-filter almost got sucked into the turbo! This was due to running a "shorty." Take my word as a grain of salt if you want...

 

I have heard of that, but with the 20b im not going to run more then 15psi, so a shorty is probably my only option unless someone makes an hks mushroom style filter with a 5" inlet.....?? which would most likely be ideal

 

Look on K&N's website under universal filters and search for the dimensions needed.

Jack

 

Its not the 5" inlet that the problem its the overal length that cant exceed 3.5", k & n does not make one that size

 

a filter that size sounds like it's gonna cause a major restriction, especially on a 42R and 20B. If it was me I would stick to the mesh, is there any way you can route some 5" piping to somewhere you could fit a larger filter?

Another option might be to run a turbo bellmouth: http://www.velocity-of-sound.com/com...&by_category=1 to increase surface area, and find a finer screen to cover it.

Triple edit: Another thing I've heard of is putting a layer of pantyhose over the screen for a dust filter. Don't know about that one though...

 

Sounds like the pantyhose with a screen is my best option lol
Unless I come up with some interesting fab work...... here is a picture to help

 

Hey dude. You know theres three rotors in there?!?!

 

I'd be more worried about that waterpump pulley slipping at high rpm.....

That's one big downpipe. Yikes. 5 inch? I'm running a four incher on my measley 2 rotor

 

it's a 5"

 

I have the same problem. I run a S475 on a 2 rotor and had a shorty filter from vibrant. I thought it was fine. Well i let a friend borrow it and i put a screen on mine. Well during the course of that time i ran a buddy with a 42r, he use to beat me. But now with just the screen i pull him at 1 bar and hes at 17 psi. Where at bar for bar he would beat me. Maybe its in my imagination, but the screen is awesome. Now im gonna do what was suggested....... a stocking over my screen...lol... nice

 

I don't know who thought of the panty "HOES" trick but it must have been a woman. That IMO is the worst idea ever. Too flexible and would most likely get sucked into the compressor wheel.

For the the people that don't want to believe that counter this point... What happens when a any foreign object with greater mass than the "HOES" gets by the compressor wheel? The answer = FATAL ATTRACTION.

If you would like the QUICK solution get the velocity bell-mouth and some screen. If you want the SMART solution pay a fabricator to do as someone already stated and route piping to the largest area you can and fit an air-filter there. Good-luck and take care of the 2 liters of fury...

 

As there is no filters that will fit and Im already running a screen but its dust that worries me... and since this is my dream machine I will be getting something designed to accomadate a filter and it will be designed to draw in cool air

Thanks for the ideas guys

 

for a GT42R i would stick with the screen, or find a finer meshed screen. from the pictures there does not look like there is enough room for a filter, then again ive never seen a filter big enough to go on the inlet of a 42R. if you good with metal i would try to make a custom intake from the 5in inlet and drop it down towards the bumper while making the pipe go from a 5in to a 3 or 4 inch so that a filter fits then making a custom airbox. but then again i dont know how much space you have to work with, if it were mine i would be perfectly fine running a mesh screen on such a large turbo.

 

Carlisi had a nice big air filter on his GT4202R.

 

i stand corrected ive now seen a filter that fits a 42R lol.

 

what about something like this?

 

that looks great, but i dont think it would work on his car. by looking at the pics of the engine bay he would run into his radiator hose and possibly his water pump.

 

Read my post again, I said panty "HOSE" overtop of a standard screen. If the foreign object is going through a screen anyways, you have bigger problems. And I also suggested the bell-mouth to increase the surface area and run a finer screen (or panty "HOSE"), that is what I will be doing if I can't fit a big enough filter on my S475.

The butt-welded 90* elbow right infront of the turbo inlet looks terrible....

 

I took some measurments and its going to be tough to fab anything, even if I could there is still not much room for a filter and the only place would be towards the passenger side pop-up light and its still would have to be a shorty.

Im thinking a mesh with the panty hose is the only solution..... I have run the mesh before on my last setup but figured with the 20b a filter would be nice but the engine bay is rather full :-)

 

could you fab up a frame to hold a square panel filter, just thinking it would be a thinner profile overall.

 

Holy shnikes that rad hose is close!!! Honestly, if you can run the bellmouth as well, you should. I don't really know how restrictive panty-hose is (lol) but again, the more surface area you have, the better off you will be. Plus it will make for smoother flow into the inlet

 

I use this filter on my S366
k&n 1034

 

Contact K&N i'm sure they have something that will fit. As well as answer any air flow related questions you may have.