BOV Install

[maj Andres]

So I've been looking around and haven't really found a BOV install anywhere So would it just go inplace of the stock recercilation valve?

[SullivanRacing06]

what motor? usually the companys sell bov adapters for certian apps, depends on waht swap youve got, usually it takes the place of the stock recirc

[adrianfromthecastle]

So would it just go inplace of the stock recercilation valve?

yep, basically. Unless you decide to recirculate your new BOV (which you probably should), just plug up the bung that goes to the intake and the bung that goes to your SMIC. You can put the BOV basically anywhere on the intercooler piping.

[maj Andres]

[QUOTE=adrians_s13]yep, basically. Unless you decide to recirculate your new BOV (which you probably should)QUOTE]So... installng a recirculated BOV = stock recirculation valve stays installed? and are you talking about capping off the bungs on the FMIC piping that lead to the recirculation valve? Last question, where is the best place on the piping to put the BOV? hot, cold pipe, close to turbo, would there really be a difference when driving?

[adrianfromthecastle]

So... installng a recirculated BOV = stock recirculation valve stays installed?

no, if you remove your stock recirc valve, you'll need to cap off where the SMIC connects to the stock recirc valve and also where it recirculates to (the turbo inlet after the mafs). I'm assuming you still have your SMIC because you still have your stock recirc valve right? Not front mount?

Last question, where is the best place on the piping to put the BOV? hot, cold pipe, close to turbo, would there really be a difference when driving?

best by far is closest to the throttle body (on the cold pipe) for better response.

[maj Andres]

I got a Greddy FMIC, I was so confused when you were talking about SMIC and since you have a picture of a hot cup of joe with steam coming from it, can I get one with beer with foam continuesly dripping from it

[adrianfromthecastle]

I got a Greddy FMIC, I was so confused when you were talking about SMIC

how the heck are you still running a stock recirculation valve with your front mount? where you are running it at? more importantly... why??

since you have a picture of a hot cup of joe with steam coming from it, can I get one with beer with foam continuesly dripping from it

lol wut

[maj Andres]

it is on the cold pipe, lol it gives me a little "squeak" when i shift lol I got the HKS SSQV and I want to put it on my self. Gonna take my cold pipe to a muffler shop or something so they can cut the hole in it and weld the flange on since these are not my areas.
Modified by n2tg86 at 4:47 PM 12/16/2008

[steeda763]

Not to get sidetracked...but it was a PITA for me trying to find something to cap the Greddy FMIC BOV nipple. I went to Lowe's and the only suitable -- and legitimate looking -- piece that I could find was a rubber handle cap from a shovel. I bought the shovel, took the rubber tip off, returned the shovel, and clamped the rubber tip on the BOV nipple with a hose clamp. Perfect fit, and has never popped off up to 12 psi.

HeavyThrottle.com sells a hotpipe with a BOV flange of your choice installed.

[maj Andres]

Please excuse my noobness so...................

if this doesn't make sense how would I recirculate this BOV?

[steeda763]

The nipple that you have circled receives the vacuum/boost signal from the manifold, which you need to have connected.

You'll have to do more research regarding size and fit to your model SSQV, but this is basically what you'll need to recirculate:

http://cgi.ebay.com/ebaymotors...ories

[maj Andres]

Thanks steeda763, I now know how to recirculate the BOV Now I just need some advice in choosing which adaptor flange to use for the BOV.

To weld or not to weld?

Is there really a difference in using one these flanges:

As opposed to this one:

Would the smaller diameter on the NON-WELD flange hinder or improve the performance of the BOV?

Oh, and this BOV will be recirculated. Thanks NICO members

Photos courtesy of http://www.optionimports.com/acwefl.html

[veebee]

Not to get sidetracked...but it was a PITA for me trying to find something to cap the Greddy FMIC BOV nipple. I went to Lowe's and the only suitable -- and legitimate looking -- piece that I could find was a rubber handle cap from a shovel. I bought the shovel, took the rubber tip off, returned the shovel, and clamped the rubber tip on the BOV nipple with a hose clamp.

for some reason i found this hilarious

[steeda763]

Thanks steeda763, I now know how to recirculate the BOV Now I just need some advice in choosing which adaptor flange to use for the BOV.

To weld or not to weld?

Would the smaller diameter on the NON-WELD flange hinder or improve the performance of the BOV?

Oh, and this BOV will be recirculated. Thanks NICO members

Unless you're boosting massive amounts of pressure I don't really see a reason a smaller diameter flange would hinder your BOV's performance, as long as you're relieving the boost pressure so it doesn't surge back into the compressor. I personally prefer a welded flange with its cleaner look and better durability.

[maj Andres]

Does it matter if the weld on flange is aluminum or steel? (I have aluminum piping)

[wa-chiss]

alluminum would be better with alluminum pipe.

[jessetang]

I guess welding aluminum to aluminum makes more sense?

And installing a bov can be as easy as removing the stock dump value or as hard as custom piping and custom bov location.

[Ghast]

THIS IS JUST THE THREAD I NEED!

Ok i am torn between the synapse and the HKS SSQV!

If i am worried about reliability on the engine and running a setup that is going to AID in a longer lasting turbo/engine life.

Do i want to do Blow off to Atmosphere or Run Recirculated?

If i have a FMIC how the heck do i run recirculated ( you don't need to go into super detail i just want to know where it goes haha ) I thought the point of a blow off valve was to relieve the pressure. So if i am running recirculated then how am i getting rid of pressure if its going right back in ?

I need to search yes i know.

And can i still HEAR the blow off if i am running recirculated?

Bottom line question: What is better for the engine/turbo? Atmosphere or Recirculated?

Thanks a lot guys!

One Love,

Ghasty

[maj Andres]

This is my FMIC with the stock recirculation valve that is recirculated back to the air intake.

Would that air that is being recirculated be unaccounted by the MAF?



I would llike to know the answers to your other questions as well!

[HeckYes]

Not to get sidetracked...but it was a PITA for me trying to find something to cap the Greddy FMIC BOV nipple. I went to Lowe's and the only suitable -- and legitimate looking -- piece that I could find was a rubber handle cap from a shovel. I bought the shovel, took the rubber tip off, returned the shovel, and clamped the rubber tip on the BOV nipple with a hose clamp.

HeavyThrottle.com sells a hotpipe with a BOV flange of your choice installed.

thats awsome

[jessetang]

This is my FMIC with the stock recirculation valve that is recirculated back to the air intake.

Would that air that is being recirculated be unaccounted by the MAF?



I would llike to know the answers to your other questions as well!

Yes. The bov recirculated behind the MAF because it has already read the air. Open air bov usually has idle problem because when it opens, MAF is still reading air the turbo pulls, and the engine is running too rich (more like there is no air).

[maj Andres]

Okay, so I went ahead and got the weld on flange, now is it possible to cut a hole in the pipe and cover it up with something, IDK what, and drive and be safe? Drive to a welding shope, have them weld it on and then cover up the flange hole and drive back to my residence to finish up the install.

[White Comet]

my car had the bov on the hot pipe but i plan on moving it to the cold pipe when i swap the engine into the new shell. i ran mine unrecirced though and had no problems. i dont plan on recirculating this time either

[hpballer76]

i am running my bov unrecirculated and my car idles fine just kinda high [around 1600] could my bov be the cause of this?

[White Comet]

mines not rough at all. its at a solid 800 rpms

[maj Andres]

when i first start up my car and it's cold it idles at 2k for about 1min then to 1.5k for 30 secs. then it stays at 900-1k rpm's.

[maj Andres]

Okay, so I decided to just take my car to McKinney Motorsports in Temecula CA, and have a proffesional install the BOV. When I got there I soon discovered that I did not have the retaining clip So they took off my stock recirculation valve, capped off the bunghole with a piece of aluminum and welded on the flange but didn't cut the hole in the pipe. I told him I could finish up the install since I have access to an auto hobby that is on base (I'm in the military). So I drove away slowly trying to keep the boost at a minimum since I didn't have a BOV. I was getting compressor surge all the way back to the hobby shop.

So I got the BOV on, couldn't recirculate it because I didn't have the right angled hose so I left the recirc. fitting on there. Statrted up the car and I reved it expecting to hear that sweet sound we all crave, but all I was hearing was surge I checked all the connections and all was good. I drove away and i could vaguely hear the BOV, but I could definatly hear that fluttering. Fluttering is not coming from the BOV, but the air fliter. Sounds just like it doesn't have a BOV. Help!Here is a pic:

[ZOMG.SR20]

because a SSQV sounds like compressor surge and like fluttering

[maj Andres]

Do you own a HKS SSQV BOV? Does it sound like this http://www.youtube.com/watch?v...lated

[SR20DET.240]

Ok, did you hook up a vacuum line to the inlet on the BOV that connects to your intake manifold, the BOV operates by vacuum, when your throttle plate closes it activates your BOV. I have the same BOV although it is on the hotpipe and it whistles when it releases the boost. It sounds like you are getting compressor surge. If I have time tomorrow I will take pictures of my setup so you can see what I am talking about.