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Legacytuner · Post by **Legacytuner** » Wed Jun 23, 2004 6:42 am

Hey guys i wonder if this will work on our usdm they say the will work on an rs i dont know if they will work on our cars if anyone can look in to it that would be sweet

http://us1.webpublications.com.au/stati ... 1326tb.jpg

www.autospeed.com

mTk · Post by **mTk** » Wed Jun 23, 2004 9:49 am

Looks like it would work just fine. From the picture it appears to function much the same as a boost controller, bleeding boost so that the map sensor never sees above the desired level.

MK

vrg3 · Post by **vrg3** » Wed Jun 23, 2004 1:34 pm

I agree, MK.

The TurboSmart pneumatic FCD is either just a bleed valve or a ball-and-spring valve (or a combination of the two)... you could make the same thing yourself with like 10 bucks' worth of parts from the hardware store.

THAWA · Post by **THAWA** » Wed Jun 23, 2004 5:05 pm

even though I don't have any need for it this idea intriques me

I assume it would be setup exactly like a mbc, where there'd be a spring with a ball one side of the parallel part of the T, and then have it inline with the map. Also a screw on top so you can set what boost the map will see. Or is there more to it?

vrg3 · Post by **vrg3** » Wed Jun 23, 2004 5:17 pm

Umm... not quite... I think what you'd want with a ball-and-spring is for the valve to leak high boost pressure away from the pressure sensor.

Something like this:

Code: Select all

            --------------------
manifold <-                :    -> sensor
            ------------+ +-----
                        |O|
                        |\|
                        |/| 
                        |\+--
                        |/    -> atmosphere
                        |\+--
                        |#|
                        |#|
                        ### screw

The : is a restrictor. The O is the ball. The /\/\/ is the spring. The ### is the adjusting screw

mTk · Post by **mTk** » Wed Jun 23, 2004 5:31 pm

^^ exactly what i was thinking.

MK

THAWA · Post by **THAWA** » Wed Jun 23, 2004 5:31 pm

oh okay, I see, as for it venting to the atmosphere, wouldn't that mess stuff up? Wouldn't you want to it reenter the intake somewhere?

mTk · Post by **mTk** » Wed Jun 23, 2004 5:40 pm

Most mbcs also vent to air, i guess they're just betting that the small amount of leaked air won't make a difference.

MK

vrg3 · Post by **vrg3** » Wed Jun 23, 2004 6:54 pm

What MK said.

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FOUND GREAT LOOKING FCD CHECK IT OUT!

FOUND GREAT LOOKING FCD CHECK IT OUT!