Air filters for ITBs

Whizbang · 12-19-2009, 02:14 AM

so i am kinda stuck on how to get a functioning air filter on my itbs yet still maintain the benefit of the ram tubes....

IH8DSM · 12-19-2009, 04:06 AM

the closest ive found where socks that go completely over the horns. I've been trying to find filters for inside the horns as well.

heres a link to the socks
http://forums.club4ag.com/zerothread?id=26038

Silver86 · 12-19-2009, 06:36 AM

http://www.tweakit.net/shop/product_...roducts_id=450

these would work, wouldnt they? only place ive ever really seen them.

RotaryProphet · 12-19-2009, 10:45 AM

Ram socks work, but something like this: http://www.efihardware.com/products/...mm-ida-3.25-KN is probably closer to what you're looking for.

I used a Weber 48mm IDA carb to good effect, and I had a similar (and much cheaper) filter canister on it, that allowed the velocity stacks to extend up into the filter area; as that throttle body is an IDA style, and therefore the spacing should be the same, I wonder if a Weber IDA filter could be made to work with some mild adjustment?

NoDOHC · 12-19-2009, 11:50 AM

An airbox is by far the simplest. It will also give you the possibility of taking in cold air from outside rather than engine bay air that you would get from the socks.

sen2two · 12-20-2009, 05:41 AM

a friend of mine just used some filters from a snow mobile. they look basically the same as a cone filter that comes on just about every regular intake. but instead of being huge, its ITB sized. they sell them on eBay...

FujiRacing · 12-20-2009, 08:13 AM

Pipercross is what our customers use. We use them for the street on our car. We do carry them. We have also carried these nets that do not filter the smaller stuff but are popular.

Whizbang · 12-20-2009, 12:13 PM

how much for the pipercross? its dust here so screens arent going to cut it

FujiRacing · 12-21-2009, 04:46 AM

Pipercross is $55.00 for the pair plus $4.95 S&H.

Whizbang · 12-21-2009, 06:45 PM

will they fit my efi hardware itbs? any pics?

Whizbang · 12-21-2009, 06:51 PM

Quote:

Originally Posted by FujiRacing

Pipercross is $55.00 for the pair plus $4.95 S&H.

i looked online and i think i saw what your talking about on their site and im pretty sure that is the way to go. How would i go about paying you?

FujiRacing · 12-23-2009, 04:12 PM

You can reach me directly @ 352-217-5554 or email @Fujiracingusa@aol.com. Thanks!

Black91n/a · 01-01-2010, 06:58 PM

No offense, but pretty much any arrangement where you have a small filter on the horns, well, sucks. If you look at factory ITB setups on BMW's and such, they have one thing in common, they use a plenum. That is what I suggest that you do if you want it to perform as best as possible. This allows you to do 2 things, for one, you can take "cold" air from outside the engine bay and feed it to the engine, but secondly, you can get more filter area and get it away from the TB's, reducing the turbulence and giving better performance.

Whizbang · 01-01-2010, 08:52 PM

to make that work it a bit more involved that it sounds. i just need something to cover the air horns for now. I eventually DO want to go with something along those lines, but that will require some ingenuity since there is nothing "ready to go" to make that work.

FujiRacing · 01-05-2010, 09:39 AM

I agree a plenum box will be better than the sock type filters but there is alot of work and cost involved.

12-19-2009, 04:06 AM	#2
IH8DSM RCC Contributor Join Date: Mar 2008 Posts: 610 Rep Power: 18	the closest ive found where socks that go completely over the horns. I've been trying to find filters for inside the horns as well. heres a link to the socks http://forums.club4ag.com/zerothread?id=26038 __________________ 85 rx7 gsl-se - AA tags/ never ending project will never run

12-19-2009, 06:36 AM	#3
Silver86 now what? Join Date: Jul 2009 Location: SE Wisconsin Posts: 178 Rep Power: 17	http://www.tweakit.net/shop/product_...roducts_id=450 these would work, wouldnt they? only place ive ever really seen them. __________________ 1986 Rx7 coupe - arctic silver - sold aka - 20bforme

12-19-2009, 11:50 AM	#5
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 17	An airbox is by far the simplest. It will also give you the possibility of taking in cold air from outside rather than engine bay air that you would get from the socks. __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)

12-20-2009, 05:41 AM	#6
sen2two KTEC Join Date: Jan 2009 Posts: 642 Rep Power: 0	a friend of mine just used some filters from a snow mobile. they look basically the same as a cone filter that comes on just about every regular intake. but instead of being huge, its ITB sized. they sell them on eBay... __________________ what I have: 1985 Gs:12a All motor Drag car - 1973 Rx2: Play car What I had: 93 Touring: TRADED - 91 Coupe: TRADED - 90 GTU: RHD - 88 10AE: SOLD - 87 Base: SOLD - 86 Base: SOLD - 1985 GSLSE - 85 Gsl: SOLD - 80 Gs: TRADED - 1972 Rx2

12-20-2009, 12:13 PM	#8
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 21	how much for the pipercross? its dust here so screens arent going to cut it __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

12-19-2009, 10:45 AM	#4
RotaryProphet Rotary Fanatic Join Date: Sep 2008 Posts: 147 Rep Power: 17	Ram socks work, but something like this: http://www.efihardware.com/products/...mm-ida-3.25-KN is probably closer to what you're looking for. I used a Weber 48mm IDA carb to good effect, and I had a similar (and much cheaper) filter canister on it, that allowed the velocity stacks to extend up into the filter area; as that throttle body is an IDA style, and therefore the spacing should be the same, I wonder if a Weber IDA filter could be made to work with some mild adjustment?

12-21-2009, 04:46 AM	#9
FujiRacing Rotary Fan in Training Join Date: Dec 2009 Posts: 90 Rep Power: 16	Pipercross is $55.00 for the pair plus $4.95 S&H. __________________ Jimmy FujiRacing www.fuji-racing.com *2010 13B Rotary Miata Semi-PP* 2009 REDLINE TIME ATTACK Modified Class Winner Nashville & Englishtown NJ.(Miata Piston Motor n/a) 2008 REDLINE TIME ATTACK Overall Winner VIR Street Class (Miata Piston Motor n/a) 1990 FC3S Street Car

12-21-2009, 06:45 PM	#10
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 21	will they fit my efi hardware itbs? any pics? __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

12-23-2009, 04:12 PM	#12
FujiRacing Rotary Fan in Training Join Date: Dec 2009 Posts: 90 Rep Power: 16	You can reach me directly @ 352-217-5554 or email @Fujiracingusa@aol.com. Thanks! __________________ Jimmy FujiRacing www.fuji-racing.com *2010 13B Rotary Miata Semi-PP* 2009 REDLINE TIME ATTACK Modified Class Winner Nashville & Englishtown NJ.(Miata Piston Motor n/a) 2008 REDLINE TIME ATTACK Overall Winner VIR Street Class (Miata Piston Motor n/a) 1990 FC3S Street Car

01-01-2010, 06:58 PM	#13
Black91n/a Rotary Fan in Training Join Date: Mar 2009 Posts: 39 Rep Power: 0	No offense, but pretty much any arrangement where you have a small filter on the horns, well, sucks. If you look at factory ITB setups on BMW's and such, they have one thing in common, they use a plenum. That is what I suggest that you do if you want it to perform as best as possible. This allows you to do 2 things, for one, you can take "cold" air from outside the engine bay and feed it to the engine, but secondly, you can get more filter area and get it away from the TB's, reducing the turbulence and giving better performance.

01-01-2010, 08:52 PM	#14
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 21	to make that work it a bit more involved that it sounds. i just need something to cover the air horns for now. I eventually DO want to go with something along those lines, but that will require some ingenuity since there is nothing "ready to go" to make that work. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

01-05-2010, 09:39 AM	#15
FujiRacing Rotary Fan in Training Join Date: Dec 2009 Posts: 90 Rep Power: 16	I agree a plenum box will be better than the sock type filters but there is alot of work and cost involved. __________________ Jimmy FujiRacing www.fuji-racing.com *2010 13B Rotary Miata Semi-PP* 2009 REDLINE TIME ATTACK Modified Class Winner Nashville & Englishtown NJ.(Miata Piston Motor n/a) 2008 REDLINE TIME ATTACK Overall Winner VIR Street Class (Miata Piston Motor n/a) 1990 FC3S Street Car

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