1g bov vent to atmosphere? [Merged 6-8] venting

[TSIAWDTalon]

I have read a lot of "controversy" regarding bov venting to the atmosphere. I want to vent mine, for my own reasons, but I don't want to change from the 1g. Is this possible? Any help would be appreciated, and no flaming, please.

 

[TurboBlue]

Thats what the Type H-34 BOV is for, its the RFL without the horn, instead it has a fitting to re-circ back into the intake...

 

[DSMeclipse4G63]

Ok OK I wasnt asking about venting...I was asking about LONG TERM effects. I know from reading and posting as well as venting a stock bov(for 1 mile)...so I know what happens. If you read up top youll see what the thread is all about, and also that I experienced NO problems other than a little lag on spool up(which is how the turbo will respond when its not getting air to keep it going). Thats all Im not trying to vent out just merley asking the long term effects...oh well its hooked back up. Thanks
Andrew

 

[vinh766]

sorry, i just figured that since the rfl is the loudest one, then that would be the best, but guess you guys are all ahead of me by a step or two.

 

[98spydert]

Just like everyone said:
worse mpg
wets the cylinders causing excessive wear and ring deteriation
clogs the cat
excessive carbon build up in exhaust and intake mani
fowled plugs under constant light driving conditions


those are long term effects


To fix the problem, buy two stainless steal hose clamps if you don't have them already. buy a foot of 1 inch(or whatever you need) coolant line from any parts store. Cut to fit and strap it on. I've got an aftermarket intake, aftermarket uicp, and the same greddy type S. Worked for me.

 

[1G/TS-ituner]

with my stock 1st gen my friend indented the top of the BOV so it looks like a tiny soup bowl, and it keeps it from leaking any boost untill it dumps.....so get a 1st gen BOV then indent the top, to avoid leaks, then you wont have any problems

 

[ARTSUPRA]

Usually the main reason of car stalling on idle is that BOV leaks due to age. Simple test, try blowing into the BOV trough the discharge hose if you can blow trough it...........it leaks


As per long term effect gas milage is a sure thing, then carbon build-up (will take too long to notice), will puff black smoke on shifts, cat might get cloged, however I never heard of cylinder and rings being washed away


I say you vent it, you probably won't keep the car for too long to notice any long term effect, I know I wouldn't.

One thing for sure FARTING SOUND ROCKS, fart if you can:laugh:

 

[paranoidTSi]

If venting is so bad why are the top blow-off valves designed to vent? ::coughSSQcough::

I've had my BOV venting for over a year, car runs fine and I have experienced none of the problems described here.

 

[Rx3]

Originally posted by Red97Eclipseboy
Wow, theres a thread about this every week! Funny how it never sinks in though.

Even funnier that no one uses the search button either

Originally posted by paranoidTSi
If venting is so bad why are the top blow-off valves designed to vent? ::coughSSQcough::

I've had my BOV venting for over a year, car runs fine and I have experienced none of the problems described here.

Last I checked, the HKS SSQ has a recirculation kit It's a universally designed BOV, so it can either be vented or recirculated. It's up to the purchaser to know which configuration is supposed to be used with his engine. It's not designed to vent because venting is always better.

Maybe you haven't experienced any of the problems because you don't know what to look for? Have you logged your car over a few days or so? Judging from your profile and your mods list you have or will have a lot of problems that you haven't experienced yet. Of course I could be wrong..

 

[98spydert]

Originally posted by ARTSUPRA
As per long term effect gas milage is a sure thing, then carbon build-up (will take too long to notice), will puff black smoke on shifts, cat might get cloged, however I never heard of cylinder and rings being washed away


I say you vent it, you probably won't keep the car for too long to notice any long term effect, I know I wouldn't.

One thing for sure FARTING SOUND ROCKS, fart if you can:laugh:

Funny how you note the black smoke but then say that you won't notice the build up. Do you think all that black smoke cruises right on through the exhaust without leaving deposits anywear? Or how about the small amount of exhaust kicked back into the intake manifold before the intake stroke? Gonna leave a little build up, that's for sure. And piston rings don't get washed away. Excessive fuel in the combustion chamber turns to drops of fuel and sticks to the cylinder wall. It's called washing the cylinders. Fuel is supposed to stay atomized and not form droplets or stick to anything except air molicules. The piston rings are not designed to ride over the cylinder wall while it's caked with fuel so it shortens their life. It's obviously not going to destroy them in a weak from venting but the whole point of this thread was this guy wondering about the long term effects.

 

[g0tEclipseD]

how much have you guys seen your MPG go down from venting. When I vented my Type S it went down almost 40-50 miles per tank....right now i have it recirculated because i cant afford 2.60/gal in san diego.

 

[junk240sx]

Has anyone ever looked into the HKS AFR? Or if you're already using it, HKS's site says that the AFR can take into account cars with MAF and BOV's venting to atmosphere and prevent it from going rich/stalling.

just curious...

 

[98spydert]

Interesting, what's the web site you read that on?

 

[junk240sx]

Here you go:
http://hksusa.com/products/more.asp?id=811

Additionally, an Electronic Idle Stabilizer function (EIDS) function, which buffers the dramatic airflow meter signal fluctuations, prevents the engine stalling or stumbling effect associated with the sudden imbalances in the air/fuel ratio of airflow meter-equipped vehicles that utilize discharge blow-off valves that vent to the atmosphere.

 

[MyEclipse5]

Originally posted by junk240sx
Here you go:
http://hksusa.com/products/more.asp?id=811

Isn't it cheaper to get the GMAFT?

 

[junk240sx]

I dunno...like I said, if someone is already using the HKS AFR, I thought this might be already fixable for them to just vent to atmosphere. I just got my HKS AFR for $120 from some guy so i guess the deals are out there.

 

[Eliminat0r]

ok well im going to be getting a 95 tsi awd with a 6 bolt swap very soon, and it has the crappy 2g bov on it, so the first upgrade im going to buy is the bov because it already has gauges and controller, and ive read that venting to the atmosphere is better than venting to intake if you have the right stuff to do it. I was thinking of either getting the turbo smart bov or the tial and venting it to atmosphere, all i need is the maf and maf translator right? Where can i get the maf, and the maft from? also it asks for flange kit since i have the 6 bolt do i put down 1g or 2g.

Thanks,
Pce- J

 

[L2RTSiAWD]

You don't need the flange for a 1g or 2g you need a universal flange you can weld to your custom IC pipe.

You can get a MAFT from Ramchargers

You can a used MAF from any fbody sites.


There are many many threads on this.

 

[L2RTSiAWD]

Check out these threads

http://dsmtuner.com/forums/search.p...d=568780&sortby=lastpost&sortorder=descending

 

[Devicex]

I would get the maft from http://www.fullthrottlespeed.com which is run by Mike Licht who created the maft for ramchargers. Top notch service and translator message boards are quite nice.

 

[Eliminat0r]

on dsmparts it says buy a flange so you dont have to weld, and i dont have a custom ic pipe, im just gonna buy one.

 

[L2RTSiAWD]

They don't make many IC pipes already flanged for a TIAL BOV.

 

[Eliminat0r]

o you were talking about the Tial im probably gonna get the turbo smart one.

 

[Devicex]

Turbo smart?

I bet the tial is smarter.

 

[Eliminat0r]

^^ check the bov's on dsmparts.com, also thanks for the link to that shop, the guy lives down the road from me, or at least somewhere close.

 

[Defiant]

Originally posted by Eliminat0r
ive read that venting to the atmosphere is better than venting to intake if you have the right stuff to do it.

I doubt you've read that here. If you do the GM MAF conversion to a blow-through, and MANY other supporting mods, you can vent to atmosphere. The ONLY advantage is the blowoff noise. Recirculation helps the turbine stay spooled.

And with that, I'm referring you to the search engine, and its endless supply of pre-existing Venting articles.