"Leaf Blower" Forced induction idea

[Ian Habicher]

>Sorry for the slightly off topic post, but as most of us here are
>intereseted in this stuff, i though ppl wouldn't mind..
>
>What do you think of a 'leaf blower' used to force air into an engine?
>Has anyone tried this before? Some of these things can blow a LOT of air...
>they can also be run independanly from engine speed/exhaust

They won't provide enough air.  There's a good reason why a '400 HP' 
supercharged engine might only produce 320 HP at the flywheel!  Lots of 
folks come up with 'electric superchargers' and shit but have no idea just 
what sort of power it takes to compress that much air that quickly.

Look at it this way:  how much pressure will that leaf blower produce? 1/4 
to 1/2 PSI when it's in a good mood? :)  Also, will it keep it up at 
automotive-engine airflow rates?  Nope.

Turbochargers were developed to overcome the problem of superchargers eating 
an enormous amount of power at high boost levels by using the wasted exhaust 
gas energy instead of valuable shaft power.  Shaft-driven superchargers have 
the advantage on the street in that there is no 'turbo lag' or throttle 
response delay.

Your leaf blower might give a tiny engine another 1/2 horsepower at idle 
speed if you've won the lottery 3 or 4 times this month :)  Above that, 
it'll become a restriction.

>Just wondering what people think..

Never ask people what they think :)

>Cya

Later dood

Ian
1987 RX-7 T2
_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org