93iditurbo
Full Access Member
im planning on making a custom air intake for my truck, i have some 3in exhaust tube lying around, im just wondering if 3in tube will be big enough to keep up with the engines demand for air. what r your thoughts?
custom air intake size
- Thread starter 93iditurbo
- Start date
Silver91Hatch
Full Access Member
What size is the opening for the air cleaner, IIRC its a 5".
93iditurbo
Full Access Member
i was planning on using this airfilter
http://www.usedvictoria.com/classified-ad/UNI-3-oiled-foam-performance-air-filter_13873442
http://www.usedvictoria.com/classified-ad/UNI-3-oiled-foam-performance-air-filter_13873442
funnyman06
Full Access Member
Well I cant comment on the size, i don't see why it wouldn't work. But UNI makes good filters. They are HUGE in the offroad industry. Make filters for dirt bikes and the such.
alienturtle
Human
i have those filters here at the honda shop i work at. Not a bad filter but in my opinion nothing filters better than paper baby! check out here and see what you can find. id get you a picture of my setup with a huge paper filter and 4" tubing but im at work right now and i dont have any pics of it
http://www.fleetfilter.com/
http://www.fleetfilter.com/
tractorman86
Registered User
I wouldn't use anything less than 3.5 with a wix 46637 filter
CDX825
filtration nut
Id go with 4" and a bigger filter.
Uni does make a good filter though! The drop in filter I have is pretty much the same thing as a uni filter.
Uni does make a good filter though! The drop in filter I have is pretty much the same thing as a uni filter.
rhkcommander
Full Access Member
4" is what i got on my turbo... seems to do just fine. gonna cut the rad support eventually and have it extend out for 'true' cold air later after it runs perfectly 
f-two-fiddy
Registered User
FYI- exhaust tubing will corrode. Unless it's SS.
MidnightBlade
Shiftin' Smooth
id go with 5" tubing, may be a little over kill but too much is better than not enough right?
what about conduit tubing? will that still corrode?
what about conduit tubing? will that still corrode?
greg_a_morton
Full Access Member
are we talking non turbo only? I am going 2.75 for my kit.
ghunt
Full Access Member
Bah, you can use exhaust pipe, it doesn't matter. Paint it inside and out though, that helps.
I used exhaust pipe for the intercooler pipes on my old TC and never had a problem with them rusting. Like I said you gotta paint the inside. With a good coat of paint they really don't rust at all.
I used 4" pipe for my intake, with a 4x3 reducer where it goes into the turbo.
I used exhaust pipe for the intercooler pipes on my old TC and never had a problem with them rusting. Like I said you gotta paint the inside. With a good coat of paint they really don't rust at all.
I used 4" pipe for my intake, with a 4x3 reducer where it goes into the turbo.
93iditurbo
Full Access Member
so to recap, 3in might be a bit small and i should probably get some 4in stuff? what is the size of the air inlet on the turbo?
ghunt
Full Access Member
Unfortunately the inlet on the turbo is actually something like 2 3/4". Why, I don't know- I actually wrapped a thin piece of aluminum around my inlet and siliconed it in place to bring it closer to 3" so the coupler wouldn't fit so loose.
This is what I did one mine- made this all out of one 90* bend plus a short straight piece. I had started working on a box to go around the filter but never finished it...will have to get to that at some point.
This is what I did one mine- made this all out of one 90* bend plus a short straight piece. I had started working on a box to go around the filter but never finished it...will have to get to that at some point.
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93iditurbo
Full Access Member
looks good man, u kinda had to relocate the fuel filter a bit though eh?
