Boost controller question

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Feb 4, 2004 | 10:09 AM

#16

mobius97

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From: Seattle

Yep...I have seen some pullies vor the vortech S/C and they run about 70 bux for a 13.5psi set.

Feb 4, 2004 | 10:11 AM

#17

ozracer4

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From: Louisiana

is that the RIPPmods supercharger for the lancer?

Feb 4, 2004 | 10:16 AM

#18

mobius97

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From: Seattle

dont know hvent looked into S/Cing a lancer I dont own one.....

Feb 4, 2004 | 10:21 AM

#19

ozracer4

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guess i'll just have to talk to rippmods about some pulleys

Feb 4, 2004 | 09:18 PM

#20

tenkawa_akito

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From: Roanoke, VA

Re: More MBC vs. EBC tech

Quote:

Originally posted by machron1

There are at least 2 major types of MBC: ball/spring type and bleeder type. Bleeder type is basically just a controlled leak, while a ball/spring type holds boost till it pops the ball up against the pressure of the spring, thereby pressurizing the line to the wastegate diaphram and opening it. The TurboXS HPBC actually integrates both of these mechanisms in one controller, so you can set the ball to pop at a certain psi, and let the adjustable bleeder take over easing the boost curve and reducing spiking. The characteristics of the bleeder type are considered to be the less desirable because of the aforementioned point unless used in conjuction with a ball/spring type. Basically, if the spring has 22psi of force seating the ball, it's not going to move till it starts to see 22+ psi.

And about EBC's not leaking before full boost: Actually an advantage of "smart" EBC's is that you can start a controlled "fluttering" of the wastegate near the boost you want to achieve to minimize boost spikes. That is actually how the stock ECU operates, along with units like Apexi AVC-R. If you hook up an LED to the boost control solenoid signal from the ECU you'll see what I'm talking about, it will flash off & on at certain RPM's to tame the curve.

ahh! i always thought they had a diaphragm. guess i need to dremel my old stock controller open and see what it looks like. HKS offers a universal mounting MBC where you shorten/lengthen the actuator arm to change the tension on the spring, effectively changing the pressure needed to force the spring to compress

Feb 4, 2004 | 10:31 PM

#21

mobius97

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From: Seattle

Re: Re: More MBC vs. EBC tech

Quote:

Originally posted by tenkawa_akito

ahh! I always thought they had a diaphragm. guess i need to dremel my old stock controller open and see what it looks like. HKS offers a universal mounting MBC where you shorten/lengthen the actuator arm to change the tension on the spring, effectively changing the pressure needed to force the spring to compress

So this really wouldnt be a boost controller (in the way most would think of them). This is a mod of the actautor for the flapper that won't force open untill a set boost level depending on how you set the arm. If any one is interested..my favorites over at forced performance has these actautor ugrades for the t25 and the t28.....99 bux...

Feb 9, 2004 | 02:21 AM

#22

machron1

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From: Portland, Oregon

Re: Re: More MBC vs. EBC tech

Quote:

Originally posted by tenkawa_akito

ahh! i always thought they had a diaphragm. guess i need to dremel my old stock controller open and see what it looks like. HKS offers a universal mounting MBC where you shorten/lengthen the actuator arm to change the tension on the spring, effectively changing the pressure needed to force the spring to compress

I haven't ever seen a manual boost controller with an "actuator arm". Are you sure you aren't talking about the arm on the internal wastegate (the one that connects the flapper to the wastegate solenoid)? That DOES use a diaphram to push open the wastegate via that little arm, but that's not really a boost controller. Although for some low boost setups simply using the spring holding the flapper closed as a controller works fine. I.E. get an internally gated turbo w/, say, a 7psi spring, and plumb a hose directly from the intake manifold (or turbo outlet nipple, or some other boost source) right into the wastegate solenoid and you have a simple boost control setup.

Feb 9, 2004 | 09:13 PM

#23

tenkawa_akito

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From: Roanoke, VA

i call it an actuator arm cause it's an arm that comes out of the actuator selenoid.

and you just described exactly how my setup is done (from the TB). I do consider it a boost controller because it's still a method of controlling boost levels.

Feb 9, 2004 | 10:46 PM

#24

machron1

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From: Portland, Oregon

Right, that's not what most would consider a boost controller, but technically it controls boost by itself so I guess it's just interpretation. Anyway, most people would consider a boost controller to be anything that decides if/when the thing in the picture gets pressure to open the wastegate flapper, or an external gate if so equipped. You say potato...