Using a wastegate solenoid/s for staged boost control?

[Blazer406]

Anybody ever use a wastegate solenoid to make a staged boost control?

I need some electrical guideance.... I assume you hook 12v and ground the wastegate solenoid opens up... and vents to atmosphere?

Could you hook up lines to both sides... where the port was closed.... and applu 12v... the ports are open... and boost flows thru the solenoid?

I guess my question is... can a wastegate solenoid be wired up to 12 v all the time? i.e. 100% duty cycle? w/o frying?

I'll try and post a little diagram of what I am talking about doing.....

 

[Blazer406]

Here is a basic diagram I just drew up.... the jist of it is.... you use the third and 4th gear switch in the tranny to activate another stage of boost control.... in this case... several psi lower than in other gears..... because the engine is under more load in high gear... so it is more prone to detonate...so I am attempting to take advantage of the engine being under less load in the 1st two gears... and run a little more boost......

I might have to modify the design a little... depending on how the solenoids operate... and what is their default state... as I learn a little more about their operation.

What I am trying to achieve is a boost setting in 1st and second... of 26 psi.... and a setting of 23 psi... in 3rd and 4th..... and if anything were to fail.... it would go back to 23 psi....

Make sense?

 

[salvageV6]

You could save yourself some time and trouble by picking up a used BSTC boost controller which has this feature.

Dual solenoids and a HD wastegate actuator would work with it.

If you know that already then nevermind.

 

[Blazer406]

You could save yourself some time and trouble by picking up a used BSTC boost controller which has this feature.

Dual solenoids and a HD wastegate actuator would work with it.

If you know that already then nevermind.

I was really throwing the concept out there to check if it will work..... I'd like to progress this into 3 stages.... which I don't think any of the cheap boost controllers will do.....

Transbrake activated launch boost......then 1st and second gear boost.... then high gear (and 4th) boost....

 

[TurboBob]

your sketch will work I think.

The stock GN boost solenoid opens when you apply power. So you would have 2 boost settings based on the "RJC" grainger valves.

These Guys have some nice solenoid equipped grainger valves, with knurled adjustment knobs and such. I have used their stuff before with good results (on my Stealth RT/TT)

Perhaps they have a 3-stage kit......

Bob

 

[Blazer406]

Here is a sketch on a 3 stage controller.... It requires 2 solenoids (total)... and a micro switch that mounts inside console that gets depressed when the shifter gets put in manual low (1st gear)..... or the activation position for the stagerite style trans brake.

If the system would have some sort of meltdown... it should default back to the 23# setting.

I could probably wire it up where it would default to the 10# setting....

The 10# launch boost would require I change my actuator out to one that would cut down that low......

 

[Blazer406]

your sketch will work I think.

The stock GN boost solenoid opens when you apply power. So you would have 2 boost settings based on the "RJC" grainger valves.

These Guys have some nice solenoid equipped grainger valves, with knurled adjustment knobs and such. I have used their stuff before with good results (on my Stealth RT/TT)

Perhaps they have a 3-stage kit......

Bob

Cool setup... reasonable too.... I get satisfaction from doing something the hard way I guess...... I'm stubborn that way.....I might have to give my home-made setup a try.....