principle of operation..bypassvalve..

[zen]

reading whipple blurb..actuated by vacum ..i understand that fine,can this valve be used for controlling max boost..(is that why dual port bypass valve actuators exist?)i recon they can, if they dont i will pattern the idea quick!

they do not state..(atleast the bits i found dont state)

this in a quest to make one diy..(am i uk..superchargers?? what are they?mad max had one yes.??..you get the idea..cant just go buy one..)

if no it dont..whats the best way of controlling max boost, considering i want boost as low rpm as possible..

thank you ..

 

[Zuffen]

Drive ratio is the best way to control max boost.

No reason why you couldn't run a blow off valve to dump the air at a pre-set pressure.

Get the gearing near right and it will be near enough.

Have you read the book by Corky Bell called "supercharged"?

Lots of good information in there that you can use.

 

[cribbj]

Zen, the dual port actuators exist for the stated purpose.

The actuator comes with the spring above the diaphragm, and so it's in its extended position.

The port above the diaphragm is plumbed to your manifold so it will pull the actuator shaft and open the valve under high vacuum conditions.

The port below the diaphragm gets connected to boost so it does the same thing via whatever signal you decide to feed it, like a manual boost controller, or something fancier.

I have one of these actuators installed on my setup, but have only used the vacuum port so far. Next dyno run, we'll try to control boost with it.

Here's a little schematic I came up with to pipe it up, along with a truth table of all the conditions, using 2 of the AEM boost control solenoid valves (note, the ziggy lines in the head of the actuator are supposed to be the spring). I don't yet know if this schematic will work or not, so use it at your own risk.