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Manual Boost controller ideas please!

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jdpolzin

Well-Known Member
Joined
Dec 5, 2004
Messages
8,495
I'm in the process of finally putting the final touches on my Stage 2 motor and have a few questions about a manual boost controller. I ran a silicon vacuum line into the car with the thoughts I would install a manual controller inside the car but the line is quite long. I blew through the hose, which is a 7/32 line, and it's awfully hard to blow through. I can feel the air but it's nt exactly a smooth flow. So, I'm wondering if this is going to be an accurate way to control boost? I have a TurboSmart External gate to control. I may try a buddy's manual valve he bought of Ebay and install it next to the turbo and see how well it does. I'd really like to install and in-car controller though. Any good ideas?
 
I've been having great results with a MSD electronic boost controller that has fully programable boost curves. Of course, there are other more expensive ones with more options out there as well.

msdbc.jpg
 
I have a turbonetics manual controller. I have 2 6mm lines going to the gate and have a splice near the contoller inside the car the goes from the 6mm to 4mm to attach it to the 1/8 npt fittings on the controller. Let me know if you need pics.
 
I used to run a manual controller inside the console using the same 7/32 size line with no issues. As long as your gate has the capacity it should work fine.
 
Run a MBC under the hood and then tee into the compressor side and run a bleeder into the car. This allows you to set a minimum setting with the MBC and then you can up it from inside the car. Also, since you're bleeding from the compressor side you'll retain all the benefits of the MBC. Of course, you could just run the one under the hood. I mean, after you get the boost set how often you you change it anyway? HTH james
 
Run a MBC under the hood and then tee into the compressor side and run a bleeder into the car. This allows you to set a minimum setting with the MBC and then you can up it from inside the car. Also, since you're bleeding from the compressor side you'll retain all the benefits of the MBC. Of course, you could just run the one under the hood. I mean, after you get the boost set how often you you change it anyway? HTH james

Thats pretty much what I was thinking. I will probably never change the boost setting unless I have to change fuels.
 
What do you guys think of the cheapo manual controllers with the simple ball inside? Do they do the trick?
 
Let me dig you up a setup the turbo dodge guys use. They love it and it seems to work great. I may be able to find you more than one way, they are BIG diy guys cause there isn't near as much aftermarket support as the turbo buicks.

www.DempseyBowling.com

click on turbo performance upgrades. It may work, it might not. Haven't really looked into it that much.

the 2 stage setup may work well????
 
I just switched over to the Hallman. Welcome to Hallman Boost Controllers

I have the one with the cable that runs inside the car. It gives you in the car adjustability but the controller is actually under the hood so the vac lines are short. I had a boost spike issue with a Turbonetics style controller in the car and this Hallman fixed it.
 
Jeremy, if you want go cheap, back in the day we used to buy the valves that they sell at the pet stores for aquariums to control air pump air distribution. We just let it hang inside the car from a line that is T into the waste gate boost line. In your case the back part of the diaphragm. It also sounded pretty cool inside the car as it bleeds out air. Worked like a charm for $2.00.

Prasad
 
The wastegate is a TurboSmart ProGate50 external gate.

In my experience, the bleeder style boost controllers are less consistent on the external gates, because the air leaking past the valve guide in the gate will vary with temperature.

I always ran the external gates with a pressure regulator.

Run a hose from the turbo boost port directly to the side port on the gate.

T this hose, run it to a pressure regulator, and run the output of the regulator to the top port of the gate.

Run as low a pressure spring in the gate that will allow you to run your desired boost.

When I had an Hks gate set up this way on my 274" stage1 setup the boost was dead consistent, no overshoots.

Bob
 
Jeremy,

I have the Hallman boost controller and it is spot on in its adjustment. No boost creep at all.

Rob
 
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