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Installing Bleed Valve With Hybrid Fmic?

bernard R33

By bernard R33,
in Engines & Forced Induction

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bernard R33 Enthusiast

bernard R33

Posted
Posted

as topic state i have a hybrid fmic and about to install bleed valve. there is no hose going into the intercooler piping. did a search and ppl say they drilled a nipple into there intercooler piping. dont really want to do this. there must be a way to hook it up. any one done this b4? got any pics?

Gazee Grand Master

Gazee

Posted
Posted

Theres a vac line coming from the throttle body down and under your intake pipe where your bov sits going to your carbon canistor, put a 3 way thingo (cant remember wtf they're called) and then go to your bleed valve there... or use the search button..

WogsRus Veteran

WogsRus

Posted
Posted

actually you need to make one up, do not put vacume to the wastgate, as the diaphram is not designed to work under vacume, it will get damaged. Best thing to do is to drill and tap the stock cast intake pipe, BEFORE the TB and put a screw in nipple into it. That is how i did mine, works well.

tmc_2 Rising Star

tmc_2

Posted
Posted
actually you need to make one up, do not put vacume to the wastgate, as the diaphram is not designed to work under vacume, it will get damaged. Best thing to do is to drill and tap the stock cast intake pipe, BEFORE the TB and put a screw in nipple into it. That is how i did mine, works well.

A nipple on the pipe would still have vacum?? woudlnt it?

Gazee Grand Master

Gazee

Posted
Posted
actually you need to make one up, do not put vacume to the wastgate, as the diaphram is not designed to work under vacume, it will get damaged. Best thing to do is to drill and tap the stock cast intake pipe, BEFORE the TB and put a screw in nipple into it. That is how i did mine, works well.

Um... this doesn't make sense about the vacuume to the wastegate damaging the diaphram... doesn't the wastegate open and close on vacuume/boost pressure, isn't it designed like that from factory? And if you are right why does everyone that i've seen just run it from the vac hose, to the boost controller to the wastegate?

bernard R33 Enthusiast

bernard R33

Posted
  • Author
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the hose that is supposed to go onto the intercooler piping is t-pieced into a hose that runs to where the intercooler pipe joins to the intake plenum if that makes sence. can i just join the bleed valve to that line. if that doesnt make sence ill get a pic later.

WogsRus Veteran

WogsRus

Posted
Posted

no as soon as boost pressure is released the spring forces the gate shut, there is no vacume on the setup, as the stock boost tap is placed before the TB. Introducing vacume to the diaphram can couse the diaphram to pull away from the shaft mounting plate thing, sorry can't remember the techincal name. If you do use a one way valve, ensure that it is placed before the tee peece bleed valve, otherwise you will get boost goign to the gate, and then it will stay open as it will still be under pressure.

bernard R33 Enthusiast

bernard R33

Posted
  • Author
Posted

boostcontfitqo8.jpg

the yellow line is the one that is supposed to be connected to the intercooler piping. if i put the bleed valve between the yellow line and the actuator i still dont see how it wont work because the standard boost control is hooked in there and why would the mechanic hook it up like that if its wrong.

Gazee Grand Master

Gazee

Posted
Posted
boostcontfitqo8.jpg

the yellow line is the one that is supposed to be connected to the intercooler piping. if i put the bleed valve between the yellow line and the actuator i still dont see how it wont work because the standard boost control is hooked in there and why would the mechanic hook it up like that if its wrong.

As long as that hose has vacume pressure its the right one. Or am i wrong?

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