Air filter thoughts
#1
Damn, it did start!
Thread Starter
Air filter thoughts
I have an SA with a 13b turbo and Im thinking of air filters. Im trying to keep the air cool as possible so I want to avoid sucking heated air from under the hood. Im looking at drawing air in from under the bumper/headlight. There is space, I just need to drill the 3.5 hole to facilitate a 45* tube.
my original thought was to buy K&Ns Orion universal in-line enclosed cone filter. 4in 3 out. There is consideration of a 3.5 velocity stack at the mouth of the intake tube.
So it would go:
3.5 velocity stack, 3.5 45* pipe, silicon reducer 3.5 to 4, enclosed air filter, silicone reducer 3 to 3.5 another 3.5 45* pipe to the 3.5 compressor inlet.
bpv vent between the air filter and the compressor inlet.
or
i stick a air filter at the mouth of the tube and have a clear shot to the turbo. Air filter service would require wheel removal and wheel splash hard removal. Im not talking about a daily driver so this would be an inconvenience but no hardship,
pros and cons? Would the both flow the same? One louder than the other?
any thing I missed?
my original thought was to buy K&Ns Orion universal in-line enclosed cone filter. 4in 3 out. There is consideration of a 3.5 velocity stack at the mouth of the intake tube.
So it would go:
3.5 velocity stack, 3.5 45* pipe, silicon reducer 3.5 to 4, enclosed air filter, silicone reducer 3 to 3.5 another 3.5 45* pipe to the 3.5 compressor inlet.
bpv vent between the air filter and the compressor inlet.
or
i stick a air filter at the mouth of the tube and have a clear shot to the turbo. Air filter service would require wheel removal and wheel splash hard removal. Im not talking about a daily driver so this would be an inconvenience but no hardship,
pros and cons? Would the both flow the same? One louder than the other?
any thing I missed?
#2
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i might do like the example pic, and put the filter thing on the turbo (or turbo adjacent, depending on the easiest place), and then just run a duct to the front of the car somewhere, you can run flexible hose, doesn't need to be round the whole time either
#4
www.AusRotary.com
If you shift the radiator around 140mm to the left (drivers' side for LHD car), this creates a nice opening for a cold air fed airbox that will shoot directly into the compressor inlet. Or if you want to use a pod style filter, you can enclose within the airbox.
This is how the factory Mazda Competition Manual prescribes the intake setup for 1st gen race cars. That was for a NA 13B application but the design will still work for a turbo. I'm adopting this design on my turbo car.
See pages 11 to 12 of the Competition Manual here: http://foxed.ca/rx7manual/manuals/comp.manual.pdf
This is how the factory Mazda Competition Manual prescribes the intake setup for 1st gen race cars. That was for a NA 13B application but the design will still work for a turbo. I'm adopting this design on my turbo car.
See pages 11 to 12 of the Competition Manual here: http://foxed.ca/rx7manual/manuals/comp.manual.pdf
#5
Rotary Freak
iTrader: (1)
I routed the turbo air inlet to the right of the radiator and put a dual cone filter in front of the intercooler. I'm blocking some airflow to the intercooler and radiator, but the system seems to work well -- good IAT and coolant temps. Hoses and tubing are 4".
Also, the filter has remained fairly clean over 12 years / 30K miles.
Also, the filter has remained fairly clean over 12 years / 30K miles.
The following 2 users liked this post by elwood:
Maxwedge (10-23-21),
WANKfactor (10-23-21)
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