Electro-magnetic valves

[Rex Weatherford]

Bruce Plecan wrote:
> 
> Numerous attempts have been made at this.
> Some using two springs, and two coils, with valve parked 1/2 open.  Some
> tried moving the rocker arm pivots, etc etc.
> Might try hunting around the patent office to see what's been done already
> Grumpy
> 


How does the new Toyota VVTTi or whatever it's called work.  I had heard
that it used variable lift and duration...

That could have been bad information though.  I did drive a new Celica
GT-S with it and I was only 1/2 impressed.  The felt like a really wimpy
4 cyl until at least 5500 RPM.  Then it opened up and had good power up
to 8000 RPM.  It has a nice soft rev limiter at about 82-8300 RPM.

You need the 6 speed to keep the thing in the power band.. ;^)

I don't think it was any faster than my old Quad4.

Rex Weatherford
92 Beretta GTZ
15.531 @ 91.28 mph (stock)
http://www.beretta.net
http://www.mindspring.com/~rweatherford/rexw/rexhome.htm
----------------------------------------------------------------------------
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