Forced Induction Supercharger/Turbocharger

What to do about filter

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Old Mar 13, 2008 | 01:07 AM
  #1  
reamo04's Avatar
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What to do about filter

well, i got my drain figured out, etc.
Now, im down to my filter on the free-air side.
Well, the top of the turbo hits part of the fan, so, cant put a filter on there really.

So, do I run a screen, or get slimmer fans, and try to squeeze a 90* 4" fitting on there and make a way to run a filter?

Are there little like 2" length filters, or what?

Im just at a loss here, and the car NEEDS to be done in a month.
Old Mar 13, 2008 | 01:38 AM
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Use a filter.

Hit up K&N's website. They've got filters in a million sizes. If you do some looking, you should be able to find something that'll fit.

It may require a cobra head to move the filter off by 90 degrees.

Also might require getting a single slimmer fan and keeping one stocker.

For the fab work you did though (and how fast you got it done!) maybe you could also consider "adjusting" the position and angle of the radiator and condenser. You've done so much work at this point, it shouldn't be a huge deal.
Old Mar 13, 2008 | 12:43 PM
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well geoff, in the future, I will stand my radiator vertical, and then squeeze a filter on that way.

Seriously, there is no room between the turbo and the radiator (at this point) to get an elbow, or anything on without standing the radiator vertical lol.

I guess i'll run a screen for a little while and then look at moving my radiator vertical.

I also checked the K&N website, and they dont have anything that'll fit my needs
Old Mar 13, 2008 | 04:19 PM
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why not move it vertical now guy...
Old Mar 14, 2008 | 10:47 AM
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It's your car, but I would strongly advise to use a filter as well. Screens won't really protect you from much other than just the big stuff like rocks and sticks which most likely won't ever get up under your hood anyways. Its all the dirt, and grime that will be injested into the turbo that I would worry about.

If you don't think it gets that dirty under your hood, then try not cleaning under your hood, and then driving the car for just 6 months to a year and see how clean it is. Now imagine all that dirt, dust, and grime all going through your Turbo. Not a good thing!

I understand you wanting to get the car done NOW, but its better to have it done right, then have it done wrong, and then having to deal with much larger issues not far down the road.

How much room is there exactly? Do you have any pics? There's literally only a few inches between the inlet side of my blower, and my first primary header on the drivers side of my car. Not enough room for just a filter, and a member on this board still was able to successfully fabricate an inlet tube down to where a filter could be put on. I'm not suggesting this individuals exact tube for your car, I'm just saying it can be done with little to no room.

Here's a pic of the inlet tube;


Here one is in SRZ's car. You can see how close it is to the header;
Old Mar 14, 2008 | 11:44 AM
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okay, hard to see. On the top, theres just under an inch, and on the bottom, about 2 (from very edge of turbo to fan, add about an inch where it'll actually slide onto the turbo)

Old Mar 14, 2008 | 11:51 AM
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Yeah, thats definatly not much room. I doubt you'll find a filter that will just fit onto the Turbo given that small space. However, I still think its possible to get a metal pipe fabbed up to hook up to the inlet side of the turbo past the cramped space next to the fan and get a filter on the other end in a more open area under your hood.

Do you have any more pics of the whole engine bay so we can see big picture wise what we're dealing with here?

I would try going to a exhaust shop as they have good experiences with making and bending of metal pipes. I know several guys who got their intercooling piping done at exhaust shops with some high quality metal, and it turned out great all for a fraction of the price I spent having my engine shop to all my work.
Old Mar 14, 2008 | 11:52 AM
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http://intakehoses.com/Merchant2/mer...gory_Code=CHEW

May not work, but its something else to look at.
Old Mar 14, 2008 | 12:19 PM
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Forgive the rough sketch, but I think you should look into getting something welded/fabbed up like this;

Old Mar 14, 2008 | 03:13 PM
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well, i think with slimmer fans, i can get hat 4" cobra head to fit, but right now it will not since its 4" and i only have 2", but, first i needa get injectors, and make sure my car even turns over haha.
Its been sitting, unran since october, so I know my battery will be dead, and then who knows what other problems im going to have. I need to drain my gas and put in my 109 at some point as well

I need to get something figured out though. It'll be ready to be started this week.
Old May 20, 2008 | 11:06 AM
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Your fan shroud could be trimmed down considerably with a dremel and put in an ebay 90 degree aluminum elbow. You probably don't need to stand your radiator up or get aftermarket fans. Then you could put in a 9-12" K&N cone filter. The air that comes through the fans is very hot so you will want to locate the filter up in the fender far away from the hot air around the engine bay. The filter and intake will make or break your airflow and IAT's to your motor so don't skimp there.

Last edited by 97WS6Pilot; May 20, 2008 at 11:18 AM.
Old May 20, 2008 | 11:41 AM
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I am going to run mine with just a screen. I managed to fit a 90* silicone elbow on it and crammed a filter in but because there is a little bit of pressure against the elbow it colapses really easy. Its run like poo since I put the filter on. I am going to pull it off and run it again tonight, if it improves I'll just drop to a screen only.

I don't drive this one much and figure I can just double my oil changes.

My turbo inlet points directly towards my fans. Even with no filter I have never seen more than @ 40* above ambient. Hell if the worst I see is 150 I am fine with that. They drop right back down at cruise. I see supercharged guys running well over 200.
Old May 20, 2008 | 12:10 PM
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Originally Posted by jsetzer
I am going to run mine with just a screen. I managed to fit a 90* silicone elbow on it and crammed a filter in but because there is a little bit of pressure against the elbow it colapses really easy. Its run like poo since I put the filter on. I am going to pull it off and run it again tonight, if it improves I'll just drop to a screen only.

I don't drive this one much and figure I can just double my oil changes.

My turbo inlet points directly towards my fans. Even with no filter I have never seen more than @ 40* above ambient. Hell if the worst I see is 150 I am fine with that. They drop right back down at cruise. I see supercharged guys running well over 200.
The air temps coming through the fans are around 180 degrees. Compress that 10 psi and your IAT's will be substantially higher. Putting hot air into your engine is similar to racing in Colorado at 5000 Density Altitude except the other guy is at sea level.

I don't see how doubling your oil changes would help anything.

Did you try a cast aluminum elbow so it wont colapse?

Last edited by 97WS6Pilot; May 20, 2008 at 12:16 PM.
Old May 20, 2008 | 12:50 PM
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i just stood my radiator vertical, and completely redid my setup haha. I got it to work though
Old May 20, 2008 | 12:53 PM
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I doubt the transfer is 100%. Air from the fans may be above 100*, but its not 180.

There is other air too, its not like the fans are air tight into the turbo.

No, I might do a mild steel one like shown, but a 4" mandrel is far too big to fit mine.

For Ream it looks to me like you could trim the fans a bit and get an elbow on it. Hard to tell from the shots though.



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