Effectiveness of RAM induction?

[Fran and Bud]

Bruce,
I would sure like to take a look at the info on design elements of a 
forward opening scoop.  

Do you have any info/title/number/etc. to better identify the "Mopar book"?
Is this something available at Mopar dealers?  
At book stores - "How to modify your Mopar for fun and profit".

Bud

----------
>From: "Bruce" <nacelp at bright.net>
>To: <diy_efi at diy-efi.org>
>Subject: Re: Effectiveness of RAM induction?
>Date: Tue, Oct 12, 1999, 6:11 PM
>

>
>they are able to manipulate the nder hood air flow alot more then the
>average Joe, since they don't have to worry about snow, or heavy rain.
>There is a Mopar book that shows the design elements of a forward opening
>scoop which in MO is far different from ram air.
>Bruce
>
>
>----- Original Message -----
>From: "Don Berry" <donbe at MICROSOFT.com>
>To: <diy_efi at diy-efi.org>
>Sent: Friday, October 12, 2001 2:46 PM
>Subject: RE: Effectiveness of RAM induction?
>
>
>> The Pro Stock drag races have done significant testing in this area -
>> Warren Johnson in particular. Their conclusion was that the increased
>> drag offset any gains in ram effect.
>>
>> -----Original Message-----
>> From: Diehl, Jeffrey [mailto:jdiehl at sandia.gov]
>> Sent: Friday, October 12, 2001 11:26 AM
>> To: 'diy_efi at diy-efi.org'
>> Subject: RE: Effectiveness of RAM induction?
>>
>> That seems fair.
>>
>> The car in question is an MR-2, which is a mid-engine rear drive, Toyota
>> 4
>> cyl.  In factory trim, the engine is transverse mounted on the
>> passenger's
>> side and the TB is in the center.  From the TB, the intake makes 2 90
>> degree
>> accordion bends and enters a flapper-type Air Flow Meter.  From the AFM,
>> it
>> has a 1 foot long tube that leads to the air filter box.  From the air
>> filter box, there is a tube which traverses the width of the car back to
>> the
>> passengers side, up the rear quarter panel to a vent in the side of the
>> car
>> behind the passenger's door.  All told, about 15 feet of intake tube.
>> My
>> car sucks air through a damned STRAW!
>>
>> On common intake mod for these cars calls for removing the 2 90 degree
>> bends
>> and mount the AFM to the TB and the air filter to the other side of the
>> AFM.
>> Now the air filter is inside the engine compartment and is sucking HOT
>> air.
>> Remember this car is mid engine and there is no real way to cool the
>> engine
>> compartment.  This modification is known to produce 5hp on an engine
>> with
>> only 112 before.
>>
>> Now here is what I'm planning to do...
>> From the TB, I'll go through a hot-wire MAP.  I'll have to build a
>> circuit
>> to make the MAP look like the AFM for the ECU.  From the outside side of
>> the
>> MAP, it's going to trumpet out to about 8"x6" and bend up toward the top
>> of
>> the engine compartment.  This 8x6 intake box will come up through the
>> engine
>> hood, where the air filter will mount.  Then I'm going to have a duct,
>> which
>> is hinged over the rear window.  This duct will continue from the air
>> filter, up and over the rear window.  I'm toying with the idea of having
>> the
>> duct trumpet out yet some more to about 6" height and 36" wide, right
>> above
>> the passenger compartment.
>>
>> I think this system will remove most of the restriction present in the
>> other
>> systems.  It will get cold air.  Depending on the thermal qualities of
>> the
>> material used, (ceramic coated?) I should minimize the amount of ambient
>> engine compartment heat that gets transferred to the air.  I've also
>> opened
>> the system up quite a bit, instead of having to breath through a
>> tube/straw.
>>
>> So, if I build this system, should I see any RAM effect.  I drive down
>> the
>> street at 30mph and stick my hand out the window and feel my hand pushed
>> back.  At the TB, the air is traveling at about 55mph @ wot.  But at the
>> end
>> of the trumpet, the intake are is only traveling at a fraction of this
>> speed.  I should see ram benefit at above this speed, right?
>>
>> Thanx for any input.
>> Mike Diehl,
>> '87 MR-2, 7age, Dual Pipes, hand-bent header.
>> '96 4-Runner, Bone stock.
>> '90 Corolla, Disguised as a Geo Prism!
>>
>>
>> > -----Original Message-----
>> > From: Bruce [mailto:nacelp at bright.net]
>> > Sent: October 11, 1999 9:00 AM
>> > To: diy_efi at diy-efi.org
>> > Subject: Re: Effectiveness of RAM induction?
>> >
>> >
>> >
>> > So many different versions of what people call Ram Induction,
>> > you'd have to
>> > mention exactly what your talking about.
>> > Bruce
>> >
>> >
>> >
>> > From: "Diehl, Jeffrey" <jdiehl at sandia.gov>
>> > Subject: Effectiveness of RAM induction?
>> > > How effective is ram induction?  I've heard claims as high
>> > as 25%.  I've
>> > > also heard people say that it's only effective at 150mph...
>> > > Care to discuss it?
>> >
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