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FOUND GREAT LOOKING FCD CHECK IT OUT!
Posted: Wed Jun 23, 2004 6:42 am
by Legacytuner
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
Posted: Wed Jun 23, 2004 9:49 am
by mTk
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
Posted: Wed Jun 23, 2004 1:34 pm
by vrg3
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.
Posted: Wed Jun 23, 2004 5:05 pm
by THAWA
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?
Posted: Wed Jun 23, 2004 5:17 pm
by vrg3
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
Posted: Wed Jun 23, 2004 5:31 pm
by mTk
^^ exactly what i was thinking.
MK
Posted: Wed Jun 23, 2004 5:31 pm
by THAWA
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?
Posted: Wed Jun 23, 2004 5:40 pm
by mTk
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
Posted: Wed Jun 23, 2004 6:54 pm
by vrg3
What MK said.
