Plugging the recirculation port

[DSMvroom]

Ok i've tried searching numerous combinations of words on how to plug up the recirc port on the intake pipe. I first went to auto shops to try to find some kind of rubber plug that could fit over it and clamp down using screw clamps. No luck.

Next I tried Home Depot. No luck.
Ace Hardware. No luck.

Anyone know of a good way to plug this port up or where I can find a rubber end cap to use?

thx guys

 

[b00St3DgST]

not a good idea to vent to atmosphere..but if u must...u used a type of radiator cap before i realized how much better it was to vent...just find a lid that is big enough to cover the hole..then get some clamps to hold it on.

 

[sonicnofadz]

Are you talking about the BOV recirculation (blow off valve) tube or the breather tube? Both run into the intake pipe. If your talking about the BOV valve, DO NOT PLUG IT UP. Venting to the atmosphere is very very bad if you don't have the GM MAFT setup. If your talking about the breather hose that runs from the valve cover, just plug some rubber or styrofoam in it and epoxy it up. Even better, buy a hard metal intake tube that doesn't even have the breather tube (and shitcan that rubber accordian piece of crap) from dejontool.com. =)

 

[Generation1JeY]

ok any person on this thread that preaches about venting, just disregard it completely, do not let a completely burnt out, overrated conversation topic change ur mind on what u want to do with ur car. Believe me these forums are not the best place to get information and precautionary advice on venting because half the people who post are just cliche performance junkies under the impression that doing something not performance related is ricer. If u want to vent ur BOV, go right ahead and don't let someone tell u not to because i gurantee some of the people telling u to not vent it have never even tried it before, let alone done it and determined the EXACT effects it has on performance.

But a word of advice from a experienced venter, if ur venting the 1g BOV, it WILL leak at idle, hence u will have a vacuum leak, so ur idle will pulse, u will bog when u put the clutch in and brake, and the 1g doesnt sound hard enough to vent anyways .

If you are going to vent the "wrong" way, get an aftermarket adjustable BOV that DOESNT leak at idle and u will have ZERO problems accept for the overrated "rich shifting" symptom. To do that of course u need to get a whole new set of upper intercooler piping, (unless of course u like to weld).

So if u have a -----==| NON CRUSHED OR MODIFIED |==----- 1G bov, do whatever everyone would say and just recirculate it. For a few reasons, one of course venting the 1g messes up everything because it leaks at idle, two because the 1g doesnt sound THAT GREAT vented, and three just save the giant hassle of pluggin up that bung and get a straight dejontool intake pipe, i just got mine and it works very well and looks great. It also eliminates the valve cover breather hose so u wont have anymore oil in ur intake, u can just get a breather filter and unhook the charcole hose and have a straight flowing intake pipe.

 

[Denji]

2 of my friends with turbo dsms vented into the atmosphere. Both of them turned off randomly sometimes when shifting at low rpms. Zero problems my butt! My friend with the greddy type-s vented back into the intake after he encountered problems and amazingly the stalling vanished. My other friend has an hks bov so he couldnt just easily recirculate..his still turns off sometimes.

 

[darkness_fallz]

The ECU on your car already accounts for the air that is pushed back into your Intake from your BOV. So when this actually quite massive amount of air is suddenly subtracted from the equation of what's going through your intake, your car can encounter all sorts of trouble.

I vented my 2g when I had it and was running severly rich, and had a lot of issues with idle surge, stuttering at various RPM's, stalling, etc. etc....

It's not worth it.

If you want to vent to the atmosphere, get a GM MAFT and run a blow through set up. It's easier than dealing with all of the problems that venting can cause.

 

[IMMORTALSPYDER]

Yes Yes we all know not to vent

I think it was Dejon Tool's site that said take a empty film case from a camera. Plug it with that, it fits pretty well.

 

[eclipsegs98911]

go to a boating place even wal-mart may have them. They are plugs that go into the rear of the boat when you want to put it in the water. It is used to drain water out of the inside of the boat. They go in an tighten by tiring it. They fit perfect and are very tight in the hole

 

[Denji]

2 liter bottle caps also work if you dont want to leave and you have to vent to the atmosphere.

 

[Generation1JeY]

2 of my friends with turbo dsms vented into the atmosphere. Both of them turned off randomly sometimes when shifting at low rpms. Zero problems my butt! My friend with the greddy type-s vented back into the intake after he encountered problems and amazingly the stalling vanished. My other friend has an hks bov so he couldnt just easily recirculate..his still turns off sometimes.

Ok wow not to turn this into a venting battle, but i'm mearly commenting on his lack of reading capabilities.

Let me ask u a question, why do u think that there cars "turned off randomly sometimes when shifting a low rpms"?

If u read my post u would already have the answer to that question, BECAUSE UR NOT VENTING CORRECTLY. If you have any problems with idling or bogging, all u have to look at is if ur BOV is leaking at idle. Just think about it dude, if u shift at low rpms, ok when u let go of the clutch int he next gear, ur rpms are going to go down even more, if u have a vacuum leak and ur at low rpms, ask me wtf do u think will happen?

Imagin just taking a drill and putting a big hole in ur intake when ur on vacuum, do u think that will affect performance? i wonder if it will or not i mean cause i cant put two and two together as that being what a leaky bov is.

As far as rich conditions, u can speak of it as much as u want to me or anyone else, but i have tested my bov too many times to count, to see the difference between shifts. and IN MY CAR, i have noticed nothing whatsoever. Now that doesnt mean that every car is as leniant as mine, some cars might just hate the hell out of it, but with mine as long as u adjust it properly it doesnt give a shit.

 

[Thomas91169]

wtf just use duct tape and stretch it over the hole and clamp the ends down with the hose clamp. sounds ghetto but it works.

and venting is bad if you really give a shit about running rich for .035 of a second while youre shifting. the only trouble i ever had with venting is whenever i had to unplug the battery and the ecu reset itself it couldnt find its idle half the time, so i just plug the recirc pipe back in for a hour and drive it then pull it off and its fine. venting vs recirc there is really no performance difference, you might lose like 1hp or something while youre shifting, if that. it sounds a whole lot better vented too. i think if you got a turbo car, show the shit off, let everyone know what youre packing under the hood so they dont ask stupid questions or assume youre n/t.

you do need a bov that has no leak at idle though. i have the greddy and no leak at idle for me so all is well.

 

[Diplomat]

"wtf just use duct tape and stretch it over the hole and clamp the ends down with the hose clamp. sounds ghetto but it works." - Thomas91169

Lol! I did that the day I bought my turbo. I just had to hear what it sounded like.

In response to earlier replies, note that venting your BOV isn't always about getting attention. Some people chose to do so because they actually felt that there was a performance advantage to doing so. You can search DSMtuners.com and read all about this. The theory goes that when you vent your BOV, there is less resistance for the escaping air to work against. Take the recirc (dump) tube off of your car and blow through it. Is it easier to breathe with it in front of your mouth or without?

From a performance stand point, people for and against venting are all after the same thing, keeping the turbo spooled. The point of your BOV, as you all know, is to try and keep the turbo spinning as freely as possible between shifts. It also serves to alleviate some shock to the poor thing caused by the abundance of air trapped before the throttle plate as it slams shut. So one can argue that recirculating is better because it spits that little bit of air back in front of the compressor, creating an effect similar to shooting canned air at your computers CPU fan. Plus, since the turbo is still spinning, there is a bit of suction to help "pull" that air through the dump tube and BOV as it opens.

So, assuming you have all of the supporting mods required to properly vent, which is better? The argument has gone on for so long, someone on DSMtuners is bound to have dyno results of a car that was run in both modes. I'd go by that, and nothing else. Otherwise I'm just bench racing and will be severely flogged for doing so.

Of course, if you're not concerned with performance, this probably doesn't interest you. But if you learned something new, it wasn't a complete waste of time, right? A complete waste of time would be continuing to read this as I try to justify typing my reply. Are you STILL reading this? Christ! Move on! What? Are you just bored or something?

 

[DSMvroom]

hey guys i appreciate all the input, and for those that offered solution i thank you especially.

For those that offered your opinion on venting to atmosphere, again I appreciate the input but you notice I didnt not ask for consultation. I am fully aware of the circumstances, consequences, and whatnot of venting to the atmosphere. I have searched, and read for long hours about DSMs even before I bought my 99 GST.

I was simply looking for a cheap method of trying to plug the recirc port for the bypass tube to try it out. Why? Because I saw the turkey call video

I am running Greddy hardpipes, Type S, and hard intake currently recirculating and I have no real intention of changing that.

Anyway, thanks again for all your words guys. More solutions on this matter would still be appreciated.

 

[chris gst]

I went to NAPA here in FL and got something called a "Freeze Plug". I got a large enough one and plugged it in. I was afraid that it might come loose so I bought the black tar adhesive and made sure it stuck for good. No problems with venting. Just a minor drop in idle after shifting.

 

[btracer]

Ok wow not to turn this into a venting battle, but i'm mearly commenting on his lack of reading capabilities.

Let me ask u a question, why do u think that there cars "turned off randomly sometimes when shifting a low rpms"?

If u read my post u would already have the answer to that question, BECAUSE UR NOT VENTING CORRECTLY. If you have any problems with idling or bogging, all u have to look at is if ur BOV is leaking at idle. Just think about it dude, if u shift at low rpms, ok when u let go of the clutch int he next gear, ur rpms are going to go down even more, if u have a vacuum leak and ur at low rpms, ask me wtf do u think will happen?

Imagin just taking a drill and putting a big hole in ur intake when ur on vacuum, do u think that will affect performance? i wonder if it will or not i mean cause i cant put two and two together as that being what a leaky bov is.

As far as rich conditions, u can speak of it as much as u want to me or anyone else, but i have tested my bov too many times to count, to see the difference between shifts. and IN MY CAR, i have noticed nothing whatsoever. Now that doesnt mean that every car is as leniant as mine, some cars might just hate the hell out of it, but with mine as long as u adjust it properly it doesnt give a shit.

i completely agree with Generation1JeY... if done properly it should never be a problem. ive been venting for over a year and never once had that car try to stall on me. i say we take this argument to the dyno someday and settle it once and for all!!!

 

[DSMvroom]

for those that ARE venting to atmosphere, do you guys have a hardpipe w/o the recirc port? if not, how are you plugging it up?

 

[Dieselboy]

20oz pop bottle cap, Autometer tachometer light cover, radiator port caps, just a few suggestions. All this since the greek gods said you MUST vent.

 

[Generation1JeY]

see my profile i have dejontool 2 3/4" hard intake pipe with no holes in it for any vacuum lines, which means u HAVE to vent, u HAVE to get a breather filter for ur valve cover and the charcole vacuum line that i have no idea what it does u just leave unplugged.


http://www.dejontool.com/DSM 1gC Intake.htm model CIP-1gMx WITHOUT THE BOV TUBE. it looks a lot better than that if u order it almost chrome and it matches their almost chrome UICP

 

[DSMvroom]

i can't use a 20oz bottle cap, it isn't big enough. the recirc port's outer diameter is 1.25"

 

[Dieselboy]

i can't use a 20oz bottle cap, it isn't big enough. the recirc port's outer diameter is 1.25"

Well....okay, use a 1 liter bottle cap.

 

[DSMvroom]

liter bottle caps are the same size as the 20oz ones. hard to imagine all these people on this board venting to atmosphere have intakes w/o a recirc port.

 

[Korndogg]

a 1 liter bottle cap is big
a 2 liter bottle cap is the same size as the 20oz..

 

[LandoAWD]

How the hell I missed a thread about venting BOV on Karman Vortex MAF equipped cars is beyond me.

VPC, MAFT, standalone, or plumb the thing back.