I don't see how ppl would loose a significant amount of power due to the
"Bose Chamber"... but if so, would it be enough to warrent the time and
expense of fabbing up a solenoid? May be easier and cheaper to mod it up
somemore to make up for any loss ;)
not tryin to piss in your cornflakes, just stating my humble opinion...
_______________________
Jon Smith--Raleigh, NC
jon@fast4x4.net
www.fast4x4.net
> I posted this replying to the spark plug thread and there was no
> response. So now I'm giving it its own subject. C'mon guys, its
> not _that_ boring. Don't leave me hangin'!
>
> I was taking a better look at the underside of the stock 4.7 air
> hat and I think I know why you guys lose a bit of low end with
> the intake upgrades. They have a 'Bose chamber' in the air hat
> which will make the intake resonate at a lower frequency than the
> normal intake of that length would resonate. This will cause the
> intake to have its peak ram effect at lower rpms. As some of you
> may or may not know, as the intake valves open and close, the
> charge accelorates and brakes like a slinky or traffic. Given a
> certain desired resonance, when the valves open again, the air
> waiting outside is a pressure wave and not a rarefied valley.
> Longer intakes lower this resonance, shorter raise the resonant
> frequency. The frequence of the pressure waves is rpm dependent.
> Those Bose desktop radios with incredible bass response for the
> speaker size use the same principle. I know that some companies
> are experimenting with variable tuned intakes that change
> resonance continuously with rpm.
>
> I was thinking of sticking with the stock air had but put a
> solenoid driven butterfly valve that closes the entrance to the
> chamber at higher rpms and see what happens. This should push
> the resonance back up where the higher rpms can make use of it.
>
> Marty
>
>
>
>
>
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 11:54:39 EDT