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I supported Toymods
Location:
Berowra-Sydney
Registered:
July 2002
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Air Intake Length Long or Short?
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Sun, 15 June 2003 09:54
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Well its a question qhich many people have idea's about, for example my car.
MRT Performance claim to mount the unifilter straight onto the throttle body, while rospen motorsport claim that you get no gain from doing that and its better to have a long intake runner to the front of the engine bay, so two places that specialise in my car have different ideas.
i had it mounted straight onto the throttle body and yup made a lot of induction noise, now i made up a long intake runner so its at the front of the engine bay now, induction noise is almost gone but i can't really tell if its better or worse, still does 0-100km/h in 8.5s which is the same as before,
anyone else out there done experiments on mounting their ram pod on the throttle body then extending the intake to the front of the engine bay? which did you find better or did you get the same results?
rice wise having it on the throttle body makes more noise but having it at the front of the engine bay looks nicer as it looks like you put some effort into it.
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Air Intake Length Long or Short?
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Sun, 15 June 2003 10:15
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I would've thought a slightly longer one and sealing it off from the heat of the engine bay would've been ideal. Give it a cold air feed and it'd be nice.
Personally, short inlet tract or not, I don't think I'd like my air filter sitting right in the middle of my engine bay, it'd constantly be sucking hot air.
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Club Member
Location:
sydney
Registered:
May 2002
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Re: Air Intake Length Long or Short?
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Sun, 15 June 2003 10:17
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As I understand it.....
short pipe is used to improve high rpm range reduced restriction at high flow rate
longer pipe is used to improve low rpm by way of increasing air velocity into the chamber at low rpm
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: Air Intake Length Long or Short?
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Sun, 15 June 2003 10:36
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hence I guess the crazy jap dragsters with a bit of wire mesh over their turbos, and no air filter at all!
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Location:
Brisbane
Registered:
May 2002
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Re: Air Intake Length Long or Short?
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Sun, 15 June 2003 13:05
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Varying the length of the inlet tract (pre-throttle) is a useful tuning tool, but it only works well on individual throttle setups. I doubt you'd see any real-world difference between long and short inlet tracts on a single-throttle engine.
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I supported Toymods
Location:
Berowra-Sydney
Registered:
July 2002
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Re: Air Intake Length Long or Short?
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Mon, 16 June 2003 08:30
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i have no room to play with and to get a cold air intake, at the moment its right at the front sitting up behind the thermo fan so its getting air pushed in it but hot air at that.
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Location:
Lismore, NSW
Registered:
February 2003
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Re: Air Intake Length Long or Short?
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Mon, 16 June 2003 11:24
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Ive been told by many people that your filter piping should have no less then the capacity of the motor eg 2 Litre motor will need piping with a capacity of 2litres???? Beats me its only what i've been told.
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Club Member
Location:
sydney
Registered:
May 2002
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Re: Air Intake Length Long or Short?
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Mon, 16 June 2003 11:28
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I think you will find they are refering to EFI when they say that... e.g a plenium should be 2 x cc of the engine
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: Air Intake Length Long or Short?
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Mon, 16 June 2003 11:55
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the actual length of the filter piping shouldn't relaly matter, when you consider that there's already air in it. any bends in it would cause slight delays in the air reaching the throttle body, but insignificant really.
Ideally, you'd have your air filter *close* to your throttle body (or turbo), and a cool air intake from the filter to.. well, somewhere cool.
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