my new intake
03-16-04, 06:52 PM
#1
proper motoring
Thread Starter
my new intake
i just ordered a whole sh*t load (at least to me it is) of new stuff for my FD. i'm wondering what to do about the intake though. i ordered an Apex'i Power intake to replace the big bulky stocker. when i pull the old filter box, should i leave the stock intake duct inplace to pull air into the intercooler and deposit intake air in front of the new filters... or should i remove all of the stocker intake stuff and buy/build some sort of specialized ducting for the stock IC?
if you think the second idea is better, then any suggestions on where to buy the ducting at or how to make it myself, i would REALLY appreciate it
if you think the second idea is better, then any suggestions on where to buy the ducting at or how to make it myself, i would REALLY appreciate it
03-16-04, 08:32 PM
#3
Rotary Freak
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If you are running the stock intercooler, keep the stock duct. You will always need some kind of duct for a stock mount intercooler otherwise it will not function properly without airflow. It would be hard to improve upon the stock duct unless you are really good with molding plastic and fiberglass.
03-16-04, 10:06 PM
#4
aka KingDrunk
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just fab a peice of black plastic or someting to go over the hole in the ic duct, and get rid of the box above it that goes to the stock intake. the hole that you will need to cover is approx. 4X6 inches.
03-16-04, 10:28 PM
#5
Eats, Sleeps, Dreams Rotary
I did what the two above posts said when i had the stock IC. Chris at rx7.com seemed to think it was important to put that piece of plastic over the gaping hole in the IC duct...
03-16-04, 10:34 PM
#6
aka KingDrunk
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yea, if you dont cover the hole, the ic does not function as well. and since your intakes are using warmer air, you need your ic to cool the air as much as possible.
03-17-04, 06:47 AM
#7
proper motoring
Thread Starter
so, i need to cover a aprox. 6"x4" hole and should probably have a heat sheild fabbed up in an attempt to keep my intake air cooler... perhaps i'll get something like the FEED headlamp cover with the intake built in too... thanks guys the best part of this is that where i work, we have access to a HUGE machine shop that could really easilly make this stuff for me
the best part of this is that where i work, we have access to a HUGE machine shop that could really easilly make this stuff for me
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03-17-04, 08:34 AM
#8
Originally posted by SNracing
yea, if you dont cover the hole, the ic does not function as well. and since your intakes are using warmer air, you need your ic to cool the air as much as possible.
yea, if you dont cover the hole, the ic does not function as well. and since your intakes are using warmer air, you need your ic to cool the air as much as possible.
pugg57, if you don't cover the hole in the IC duct, you need to keep the front cover so it can redirect the air over to the intakes. If you don't keep the cover, then the air will just go straight up into the hood and not do anything productive.
Here's a pic of my old setup:
http://mahjik.homestead.com/files/FD...3/MVC-002F.JPG
I retained the hole and allowed more air into my intake. I'm no longer using the Blitz SMIC so I have a different IC and duct.
03-17-04, 01:02 PM
#11
PV = nRT
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The front plastic transfer duct is a huge flow restriction.
It's also a dangerous way to duct air in this configuration. Mazda themselves have found the ducting to provide an alternate airpath for the stock intake (and in this configuration most likely the cone filters as well) to pull heat-transfered air back through the intercooler and into the intake at high RPM operation.
It IS a bad design, don't use it.
It's also a dangerous way to duct air in this configuration. Mazda themselves have found the ducting to provide an alternate airpath for the stock intake (and in this configuration most likely the cone filters as well) to pull heat-transfered air back through the intercooler and into the intake at high RPM operation.
It IS a bad design, don't use it.
03-17-04, 03:04 PM
#14
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Here is a pic of mine with the Blitz intake. I just had to cut part of the stock ducting to clear the filters. The Apex kit is pretty much identical so you would have to do the same thing.
03-17-04, 03:37 PM
#17
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Originally posted by clayne
The front plastic transfer duct is a huge flow restriction.
It's also a dangerous way to duct air in this configuration. Mazda themselves have found the ducting to provide an alternate airpath for the stock intake (and in this configuration most likely the cone filters as well) to pull heat-transfered air back through the intercooler and into the intake at high RPM operation.
It IS a bad design, don't use it.
The front plastic transfer duct is a huge flow restriction.
It's also a dangerous way to duct air in this configuration. Mazda themselves have found the ducting to provide an alternate airpath for the stock intake (and in this configuration most likely the cone filters as well) to pull heat-transfered air back through the intercooler and into the intake at high RPM operation.
It IS a bad design, don't use it.
03-17-04, 04:47 PM
#18
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I agree, it is highly unlikely for it to happen with aftermarket cone filters that have also have external access to air.
It will happen with the stock air box, however.
In addition, I don't really see much productive airflow occuring with the stock intake removed. Might as well make use of all of it for the intercooler.
It will happen with the stock air box, however.
In addition, I don't really see much productive airflow occuring with the stock intake removed. Might as well make use of all of it for the intercooler.
03-17-04, 05:32 PM
#19
Originally posted by pugg57
Mahjik, so if i leave the stock intake ducting on i'm ok? that seems to be what you and Fumanchu have done.
Mahjik, so if i leave the stock intake ducting on i'm ok? that seems to be what you and Fumanchu have done.
But, then again, I still have my A/C, PS and AST.
03-17-04, 06:00 PM
#20
"It's not that simple"
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Originally posted by BoostCrzy
Heres my altered APEXi setup....
Heres my altered APEXi setup....