can you anyone tell me more about this fmiC w/the boV on it....

thanks for any help

 

Pointless. The BOV should be close to the throttle to prevent gas reversion.

 

http://www.full-race.com/catal...id=72

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beepy &raquo;</TD></TR><TR><TD CLASS="quote">Pointless. The BOV should be close to the throttle to prevent gas reversion.</TD></TR></TABLE>

Some setups dont have room for a BOV on the pipe before the TB. For example a EF,EG,EK with a turbo K20 might not have enough room.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beepy &raquo;</TD></TR><TR><TD CLASS="quote">Pointless. The BOV should be close to the throttle to prevent gas reversion.</TD></TR></TABLE>

Two reasons, you're trying to protect the turbo not the throttle body so it should be closer to the turbo. Second is that you warm up your IC as the boosted air goes through it, why would you want to blow out and release all the air you just got done cooling down?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Two reasons, you're trying to protect the turbo not the throttle body so it should be closer to the turbo.</TD></TR></TABLE>

There have been many discussions about this before. The BOV should be close to the source of the blockage, the throttle. If the BOV is near the turbo, and it opens, the entire pressureized volume of the charge pipes will have to stop, do a 180, and travel all the way back to the turbo.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ScottEK &raquo;</TD></TR><TR><TD CLASS="quote">Two reasons, you're trying to protect the turbo not the throttle body so it should be closer to the turbo. Second is that you warm up your IC as the boosted air goes through it, why would you want to blow out and release all the air you just got done cooling down?</TD></TR></TABLE>

Beepy is correct, <u>ideally</u> you would want the BOV to be as close as possible to the throttle plate. There is less disturbancein the airflow this way. Look at it like this:

Turbo-------BOV--------Throttle Plate


The dashed lines represent the intake/IC piping. When you let off the gas the turbo does not stop sending compressed air to the throttle plate. The air between the BOV and throttle plate 'stops' and may even revers it's flow when the throttle plate is slammed shut. The air between the turbo and BOV is still moving. When you increase the distance between the BOV and throttle plate, you are increasing the amount of air that is being 'stopped' and decreasing the amount of air moving in from the turbo. All that air between the BOV and throttle plate will have to get moving again eventually when the throttle plate opens and the air starts moving again. The setup with the BOV close to the TB is going to have the least amount of air turbulance or airflow loss.

 

THANKS PEEPS