The Ford 4.7 DOHC engine in the cobra comes with a set of valves in the intake
manifold for every cylinder to vary its geometry. Ford motorsports sells a kit
to REMOVE it to get more power.
Mopar gets 380 hp out of its crate 360 with a 4bbl carb and a plain old
manifold.
Dr. Pat
----------
>From: Jon Steiger <stei0302@cs.fredonia.edu>
>To: dakota-truck@buffnet.net
>Subject: Re: DML: RE:DML Smooth air...
>Date: Fri, Feb 12, 1999, 11:17 PM
>
>
> On Fri, 12 Feb 1999 Shaun.Hendricks@bergenbrunswig.com wrote:
> [...]
>> You don't need to redesign the valves or engine at all, just optimize the
>> whole setup to begin with. My personal preference would be to eliminate the
>> intake manifold altogether, design a custom venturi air valve for controlling
>> air flow to each cylinder, an O2 sensor at each exhaust output reporting
>> combustion efficiency back to the computer and each cylinder being totally
>> independent of the other, the intake venturi valve adjusting for each one
>> optimally at whatever level the demand is.
>
>
> Does the Viper engine use something like this? I seem to recall
> looking at a picture of the Viper crate motor in the MP catalog, and
> I think it had a "throttle body" type thingie for each cylinder.
>
>
>> I can draw up the idea for the system, but it certainly wouldn't be cheap
>> to make...
>
> True. :-) You know, this is one area where the consumer would
> really benefit if the auto manufacturers were to embrace "open source"
> software. Or at least "open specs"... Can you immagine if Dodge were
> to publish a manual that basically laid out what they expect to
> see from each of the sensors, what certain readings from certain
> sensors mean, etc.?
>
> That would allow a shadetree mechanic to rather easily implement
> a system such as you describe above. The hardest part would be
> the actual machining of the manifold, venturis, etc. Tools for
> programming microcontrollers are readily available, and any poor slob
> with a basic understanding of C or Assembly could create their own
> computer. Its sad, really... The computer holds the key to unlocking
> the true potential of our engines, but instead of being our savior,
> they are nothing but a hinderance. Its stuff like this that makes
> me wish I had some beater motors to play with; you could probably
> design your own computer from the ground up, but I don't want to
> screw up my daily driver. :-) (I have the feeling there is a
> lot of money to be made in this arena, if someone were so inclined.)
> Immagine a computer that you could buy and use INSTEAD of the stock
> or MP PCM; but you could hook it up to your desktop computer or
> laptop and change absolutely everything that the computer can
> control... I can see a section of the DML home page dedicated
> to "engine images". Someone finds a particulary sweet configuration
> for a particular setup, and uploads it. Anyone with one of these
> computers could download it and try it on their own truck...
>
> Oh well, time to snap back to reality. :-( (this is gonna
> hurt) ;-)
>
>
> -Jon-
>
> .--- stei0302@cs.fredonia.edu ----------------------------------------.
> | Jon Steiger * AOPA, DoD, EAA, MP Race Team, NMA, SPA, USUA * RP-SEL |
> | '96 Dodge Dakota v8 SLT CC (14.58@93.55), '96 Kolb FireFly 447 |
> `--------------------------- http://www.cs.fredonia.edu/~stei0302/ ---'
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