PhatManBUD

I got a blowoff valve from blitz for free, and i am going to install it but i have a few questions

1. when i take off the blow off valve from the hose, do i just plug the blitz one into the same hose and use the same vacuum line on it?

2. also when i take out the hose from the intake box, and put the blitz bov on, it stays open, so how do i plug the spare hole in the intakebox, or can i just leave it open?

Thanx for any help

PhatManBUD

i mean the hole on the intake box stays open

Stevey629

hey, I have the same BOV, but I cant put it in cuz I dont have the "flange" that goes into that stock hose comming off the y-pipe. Where did u get that flange? I cant seem to find any place that has the flange that fits our car. Whats it look like? Oh, and the Blow off valve should have heavy duty vacuum hosing that came with it, that is, if u got it for free "in the box" with all the stuff, flange ring, vacuum line, plastic "T" fittings, etc.
And the hole on the intake box, I wouldn't suggest leaving it open, since its above the filter, but no worries as there are a lot of ways to easily cap it off or plug it. I vented the stock BOV, so what I did was I left the little bit of hose attached to the airbox, with the clamp on the end closest to the airbox, and the other end just open. This hose is the one that comes off the box and attatches to the blower end on the bov. From there, I found that the outer diameter of that particular hose allowed me to fit a water bottle cap over the top of that opening for a pretty decently snug fit. Ive heard of coke bottle caps from a 2 liter work well too. Of course there are other ways to do it, like a rubber cork or some sort plug and jam it in that hole. I just did this temporarily, but its becoming a permanent deal, and I haven't had probs with it yet. Hope that helps, and if u could let me know where to pick up a flange, or give me some type of measurements on that flange opening on both ends...that would be helpful. Pics might help a bunch too. Let me know if u have probs with that plug or cap.

PhatManBUD

Here is a pic of my bov, there was no hose or anything that came with it. but this should be all i need to isntall it right? and about plugging the hole on the intake box, does anyone have anypictures so i know what to do for guidance? thanx for the feedback

PhatManBUD

oops and heres the pic

Stevey629

whats the deal with the side of the BOV? is that a mounting bracket? If so, where does that hook up? Looks great, and still wanna know where u got it

um, sorry I dont have pics for what u need to do, but do u understand what I mean? Basically, cap off the end where the BOV would originally recirculate. Leave the little chunk hose on the box, and cap the open end. Like I was saying also, u can plug it.

PhatManBUD

yes im sure it is a mounting bracket, i dont know it came with the blow off valve, but do you think you can draw a picture in paint or something of what im supposed to do with that hose, like leave the piece of hanging hose on that connected to the original bov, and then cap ith with a bottle cap?

Stevey629

Im not sure if this attachment is going to work, since Ive never attached anything to a post before, but if it doesn't, here is as plain english as I can put it:

There is a hose approx 1 and a half inches long, that comes out of the airbox, and attaches to the BOV. The bottom (back) of that BOV has a hose that is the same diameter but different length, that connects to the Y pipe, or essentially the turbos. What u need to do, is disconnect the BOV and remove it entirely, including detaching the vacuum line that is attacthed to the BOV. Unplug both hoses from both sides of the BOV, and leave both hoses where they are hooked up, and remove the little brown BOV. Attach the hose that comes out of the Y pipe (longer hose) to the bottom of your Blitz BOV using the supplied flange, and cap off the one that used to hook up to the other end of the stock BOV (the side that vents the extra boost out).

Note: keep in mind that the BOV is the one that goes to the bottom of the airbox. Meaning, there will be two valves that look identical, but are vented to different locations. U will know, because the CRV has a hose that is much longer than the BOV.

Stevey629

Im not sure if this attachment is going to work or its going to turn out too small, since Ive never attached anything to a post before, . I dont see how I can attach a bigger pic without exceeding that limit. SO, here is as plain english as I can put it, its a bit wordy, but bare with me, I think u will know what to do after reading this:

There is a hose approx 1 and a half inches long, that comes out of the airbox, and attaches to the BOV. The bottom (back) of that BOV has a hose that is the same diameter but different length, that connects to the Y pipe, or essentially the turbos. What u need to do, is disconnect the BOV and remove it entirely, including detaching the vacuum line that is attacthed to the BOV. Unplug both hoses from both sides of the BOV, and leave both hoses where they are hooked up, and remove the little brown BOV. Attach the hose that comes out of the Y pipe (longer hose) to the bottom of your Blitz BOV using the supplied flange, and cap off the one that used to hook up to the other end of the stock BOV (the side that vents the extra boost out). Then, if u have a new vacuum line that came supplied with the BOV, detach the stock one that runs to the UIM. Use the new vacuum line and attach one side to the UIM (right where u just took the stock one out), and the other side to the nipple that is on the top of the Blitz BOV. If u dont have that vacuum line, leave the stock one where it was, and hook it up to that nipple on the Blitz Valve. Hope you can get it installed. Just make sure that you adjust the spring properly, if u have ques. just ask, and I'll explain how to adjust it to avoid compressor surge. Its not hard, u basically turn the screw (allen head) left to soften it, and right to tighten it. Tighter is for higher boost and a later opening valve, and softer allows the valve to open earlier, or if you are boosting lower.

Note: keep in mind that the BOV is the one that goes to the bottom of the airbox. Meaning, there will be two valves that look identical, but are vented to different locations. U will know, because the CRV (Charge Relief Valve) has a hose that is much longer than the BOV which runs to the airbox, and the CRV will be located closer to the firewall.

Stevey629

Jeez. That pic came out way too small. Sorry. Hopefully you'll get it with this explaination I gave u. I can't see how people can post huge pics. Am I missing something here?

PhatManBUD

K quick quest about the spring thing.... like... either way will it still sound the same? cuz i believe i will be boosting very low because im not going to push my car when it has 118k miles on it. that maybe to too dangerous, haha maybe after the rebuild i will have to tighten it, but how do i tell if its too tight or if its softended to much? thanx

rx7raca

ok this pick is of how to make the the stock bov make its lil noise, but if you look at step 3 on there, its that lil piece that u should take and use to plug off the air box, i used a water battle cap on the end of the small black pipe, you dont want anything to get in that airbox thats not supposed to...
geoff
my .02 cents

rx7raca

here

rx7raca

damn...

rx7raca

i dunno it wont work for me, its saying the file is to big even tho it was on the forum be4 so i dunno...

PhatManBUD

K well after an hour of trying, (getting the hoses off!! AHH!!) it seems as tho my vacuum line is not long enough to reach the blow off vavle, and also the piece of the bov that goes into the hose does not seem to fit tightly even after the clamp, so for now, i put the stock one on, and just left it unconnected to the intake box, and i plugged the hose from the intake box with a bottlecap and clamp, and im just wondering if it is ok for me to leave the stock bov open like that?

Stevey629

wait, u tried to put the Blitz valve on, and the clamp did not hold the new flange tightly? hmm...u might wanna try putting something around the flange to increase the diameter or something like that, or try getting a new hose (the one that runs from the turbos to the BOV). Either way, what u basically did just now is fine. U vented the stock bov the exact way I did, and as long as u capped off that little chunk pipe that comes off the intake, ur in good shape. Its funny how that vacuum line wouldnt reach the Blitz Valve. I dont know cuz I can't see what ur doing, but Im assuming that where ever that valve mounts up, it gets too far away from the vacuum line. Interesting. Well, I would go to any hardware store or even a home depot or something like that, and get some of that vacuum line. Just bring the bov into the store, and get a hose that is the right size for that nipple on the valve, and make sure its snug, because u will want it to fit on the UIM with a snug fit too. Zipties or even clamps to hold down this vacuum line might help if u have trouble finding the right diameter hose for tight fittment. As for that screw, u wanna have it tight enough so it doesn't leak during boost situations, but when the throttle plate closes u want it to open as soon as it can. This can be accomplished in a number of ways: Obviously, the valve needs to be fully installed. Loosen the spring to its softest setting. It should go vroommmpssshhhhh. Now, tighten it enough so that when u boost, it goes vroommm....psssshhh. This pause inbetween means that it is over tightened, and from this point, slowly loosen the screw, repeating testing inbetween, until the valve sounds the same as it did when it was entirely loose. Do u see how this is done? The screw is tightened to the point where it is holding boost and not leaking, but opens just intime for the excess boost to escape. Again, if u still have probs. understanding what I mean, just ask.

wonder1and

I think there is too much typing on this post for my poor little eyes...

1. Disconnect the two hoses that sit ontop of eachother that are on the left hand side of the box.

2. remove each hose from what they are attached to (BOV and CRV)

3. A. Remove the Vac. hose from the bov (closest to the airbox) B. Remove the BOV from the hose leading to the Y-pipe.

4. Look at hose, put hand on it, and see if you can move it around easily. If so replace the stock clamp with a screw-band clamp.

5. take black hose and try and connect it to the bottom of your new BOV. If it does not fit, the flange connection needs to be redone by someone with a welder. If it does fit put a clamp on it.

6. Take BOV and move it around untill you think you have found where you want it to go. (I say mount it to the bottom bolt that is holding down an olive green plate which holds some fan relays) If your bracket does not work well with this idea, bend the f-er untill it agrees with you. If still no good go to home depot and buy some brackets that will work.

Have fun... this is where it all starts... rotary addiction.
Ryker

PhatManBUD

rotary addiction is the word alright, so since i dont have a long enough vacumm hose, ill just have to play with the stokco ne for now, here are pictures i took of in place, i got a bottom cap on ,it hit tight, but i put the clamp half way on the bottle cap and half way on the hose just to be sure.
http://www.geocities.com/phatmanbud/Image209.jpg

http://www.geocities.com/phatmanbud/Image210.jpg

my bov seesm to be about 2 times longer then the stock one. so it extends about past the length of the bottle cap, this is one thing i dont like the clutter, its hard to find a way to position the blitz bov. but the stock one just seems sooo pinner, i tested it today, little sound boo, doesnt sound mean enough. rotary fever, need more

mike172rg

I have one question. Why would you put a BOV on tyour car when it has the stock intake? It wont make you anymore HP so what gives? Is it the sound? I like the sound too but, you can vent your stock BOV!! iT IS VERY LOUD THAT WAY!!! It isnt as high piched as the blitz but, it is loud!! All you have to do is pull the tube that leads to your stock BOV off the air box!!

PhatManBUD

i did vent mine it shows it in the pictures, i just hope the pictures work , haha

Stevey629

That sux that that valve doesn't fit, damn. After all that typing, no luck. Sorry man. I guess I wont be able to fit mine in either. I was hoping I could have found a flange of some sort for it, but I guess not. Maybe Ill try getting a flange anyways, and see if I can get it to work.

Hate to ask again, but do u know where u got that flange? I know it doesn't fit all that great, but its better than not having one at all to even attempt to put on. Because, I might try to figure out a way for this to work, and I'll let ya know.

mks

There's a reason that the stock BOV vents to the filtered side of the airbox you know. At idle, the vacuum in the manifold may open the BOV and let the engine draw air through it. If you pull the hose from the BOV to the airbox, you should put some other kind of filter on it, or you're letting unfiltered air into your engine at idle.

PhatManBUD

what would some recomend as a filter?