Okay guys, I totally know this is something you'd think I could find by searching, but alas, here I am....


So question 1 - can someone take a few quick photos of how to vent the factory FD BOV to atmosphere (ie which hose). I think I have it figured out, but I just want to be sure.


Question 2 - can someone snap some pics of an aftermarket BOV mounted in the stock position and show me how it's mounted/hooked up? Or if it needs to be moved to the IC piping, what do I need to do with the stock BOV.



Thanks guys

 

No pictures, sorry.

The FD in stock form has two valves aft of the stock airbox that look nearly identical. The BOV is the one mounted farthest forward, nearest the airbox. Simply disconnect it from the airbox, plug the now unused short section of hose and you're set. Know that the stock BOV is sprung a little on the weak side. And at idle, if you listen closely, you can hear a sort of hissing/vacuum sound coming from it. That's unfiltered air going into the intake tract.
The second valve farthest aft is the CRV (charge relief valve). Just leave it as-is.

 

About what I figured. I didn't plug the airbox at first (I didn't drive it, just started it) but couldn't hear anything over the air being sucked into the airbox. I couldn't find anything to plug the now unused hole with so I hooked it back up.


Any suggestions as to what I could cap it off with? I assume I can get something generic from a parts store.


Can someone please supply photos of how to install an aftermarket BOV in the stock position? And can someone explain the advantage of mounting the BOV on the I/C piping or just generally closer to the throttle body? If that's the preferred method, what do I do with the OEM BOV?


Thanks for your patience guys.

 

Personally I don't think there's any real advantage to positioning the BOV upstream. Perhaps if your running seriously higher-than-stock boost.... maybe. Or maybe if you have alot of plumbing for something like a FMIC. But for most of us I doubt there's any real difference. If you haven't yet, search in the 3rd Gen. Section and in the stickys for options/opinions.
Otherwise there isn't any real secret to mounting an aftermarket BOV in the stock position assuming the BOV adaptor is sized correctly for the hose. Just secure it where it won't flop around.

Thinking out loud, why not just use some black friction tape (the 'electrical tape' that's sticky on both sides and has fibers for strength) to plug the airbox inlet? It's black like the airbox, stays flexible, and would seal air-tight. Just wrap some neatly around the inlet and replace the pinch-clamp to hold it on.

 

Good call thanks Sgt. You'd be amazed how hard this info is to find in the 3rd gen tech section.

I just wanted to be sure there wasnt something more to mounting an aftermarket BOV - On my 300ZX I had to have the flange welded on

Appreciate it

 

Hey Scrodes, I just did this to my oem BOV.

As you can see it's an aftermarket airbox. Once I took the hose off the airbox, I put some fabric over the hose attached to the bov (where the air rushes out or gets sucked in at vacuum) so that no big particles of anything would go in. I just secured the fabric using a zip tie as well as the original clamp.

Then I plugged the nipple in the airbox with a rubber leg tip (like you would put on a chair leg) which I got at the hardware store. I may need to tape it into place, but haven't yet.

 

guys can this be done to the CRV also? put a breather filter on it and not vent it back to the intake?