I know the wastegate of a turbo is to regulate the exhaust so it can control the boost. Doesn't the wastegate stay open some of the time and close( under full power). So quicker they close the quicker the turbo will spool up.
Now could you do away with the wastgate and install a wastgate or bypass valve to control the boost, but do it through the intake charge. The turbo would have full exhaust flow or energy going to the turbo. That would mean less lag time.

What do you think? The only thing that I see might be a problem would be overspinning the turbo.

How about for the supercharger guys, install a wastgate or valve on the intake side(boost) so you could have pulleys for HIGH BOOST LEVELS, but regulate it with a valve so you could run pump gas etc..., then turn a ****(like the turbo guys) to increase the boost, instead of have to change pulleys?
What do you think?
Yes the blower would be spinning faster, more wear, more power to turn it, but for the easy of adjusting boost wouldn't it be worth it?

 

They've already figured the wastegate out and it works how it's supposed to.
Overspinning a turbo can destroy the turbo and your engine.

They already made turbos that spool incredibly quick, but they are very expensive.

Intake side? yeah it's called a blow-off valve.



[This message has been edited by The ODB (edited February 19, 2001).]

 

I was considering a similar thing for my future procharged application. A wastegate wouldn't work because all of the flow would go to the lower pressure zone when the wastegate opened, you wouldn't be able to control it. You could open a valve to run semi-NA because the pressure would equal out. The only way you could control boost like that would be to have a restriction upstream of the air intake of the supercharger, if you decrease the amount of air going to the supercharger, no matter how fast it is spinning it won't create but so much boost. It would probably be damaging to the supercharger though. You have to think about the physics of airflow and pressure.

------------------
1986 Iroc Z 305
3.23 posi-rear
ported mass-air
custom ram-air
removed air pump, converter, straight pipe no muffler
0-60 5.5 sec
1/4 mile at 102mph
top speed 160mph (racing a mustang)
est 285hp
fiberglass hood
$2000 Alpine stereo hit 135 in spl comp.

 

I'll look in my old GM High Tech and Chevy High Perf mags. There was a guy named Preston (cant remember if it was his first or last name) who had an IROC with a Vortech on his car. He had a blow off valve and could change his boost setting by either opening or closing the manifold signal to it. When I find it, I will let you know the month and year of the issue, and what page the article starts on.

 

The guy you are talking about is Preston Smith (also known as "Smitty"). His car was featured in the May 98 issue of High Tech Performance magazine (it didn't have the "GM" label at that time). I think Preston is a member of thirdgen.org, so you might look up his e-mail address in user profiles.