[Dextrose]

Was just curious about what the consensus is regarding BOVs and superchargers. Is there any real world benefit? If so...what? Also, I've seen some pics of charges with BOVs installed, but the valve was AFTER the MAF sensor. That's bad right?
Thanks.

 

[vr6go]

Re: BOV with vortech supercharger?? (Dextrose)

I had one on my kit I bought used but it caused a lot of problems with the MAF. I received a lot of CEL's concerning air flow. I have bought a new charge pipe w/out the BOV adapter and will be installing it soon. Also, I'll try to work the BOV in before the MAF which has been done by several people. I've heard you don't need one unless you've got a smaller pulley but I liked the sound and the added safety offered.

 

[Dextrose]

Re: BOV with vortech supercharger?? (vr6go)

Well, I think for starters at least...you'll certainly want the valve BEFORE the MAF sensor...probably a good bit before the MAF sensor at that. But, as we all know there is a whole lot of pipe between the end of the charger and the MAF sensor location.
I'm curious though as to whether or not there are any justifiable gains (engine saftey, performance, etc) to be had with the valve as well.

 

[Dextrose]

Re: BOV with vortech supercharger?? (Dextrose)

Come on folks!!!

 

[Marty]

Re: BOV with vortech supercharger?? (Dextrose)

I personally think the minuses outweight the pluses, unless the "sound" is a must-have...

 

[Dextrose]

Re: BOV with vortech supercharger?? (Marty)

quote:[HR][/HR]I personally think the minuses outweight the pluses, unless the "sound" is a must-have...[HR][/HR]​

Okay, that's fine. I didn't mention anything about the sound right? I'm just trying to get some honest feedback here. But, I guess that's just too much to ask?? Nothing against you Marty, because you been a great help around these boards. Have you had any experience with BOVs on the charger?


[Modified by Dextrose, 10:53 AM 2-14-2002]

 

[Padfan1]

Re: BOV with vortech supercharger?? (Dextrose)

quote:[HR][/HR]Was just curious about what the consensus is regarding BOVs and superchargers. Is there any real world benefit? If so...what? Also, I've seen some pics of charges with BOVs installed, but the valve was AFTER the MAF sensor. That's bad right?
Thanks.[HR][/HR]​

No there is no real world benifit fro a BOV on a charger....
Branden

 

[Marty]

Re: BOV with vortech supercharger?? (Dextrose)

No personal experience. I wasn't giving you any flack, I was just telling you my summed opinion.
From what I've heard, it's kinda of a pain to get them running correctly (involving changing springs on some of the models), and when they are running properly, there isn't any gains other than the cool noise.
Theoretically, it takes the load off of the impeller in the supercharger during shifts or when you're off the throttle at high RPM, which in turn takes some load off of the belt and the engine. How much, and is it an issue? Dunno...

 

[VR6'n]

Re: BOV with vortech supercharger?? (Marty)

i was wondering about that to. i have a s/c on my VR6 and i asked around about if i should get a BOV but no solid answere. is the sound just like as if you had a turbo?

 

[Dextrose]

Re: BOV with vortech supercharger?? (VR6'n)

quote:[HR][/HR]i was wondering about that to. i have a s/c on my VR6 and i asked around about if i should get a BOV but no solid answere. is the sound just like as if you had a turbo?[HR][/HR]​

Yes, I know. I'm tired of getting worthless, biased, uninformed responses. I mean has anybody REALLY had any experience with attempting to set one up properly. I realize that the reality of the situation is that it's more than likely no real benefit. But, the whole point to asking the question was to GET TO THE BOTTOM of this topic. I'm not interested in hearing a "yes" or a "no" without a valid and meaningful explanation.

So, if that's all anybody else reading this has to offer, then please don't waste our time.

 

[Marty]

Re: BOV with vortech supercharger?? (Dextrose)

Beggars can't be choosers.

 

[Dextrose]

Re: BOV with vortech supercharger?? (Marty)

quote:[HR][/HR]Beggars can't be choosers.

[HR][/HR]​

LOL I know, but I'm just trying to keep the dead beats away.

 

[Padfan1]

Re: BOV with vortech supercharger?? (Dextrose)

fine you cry baby ill alaborate..a guy here in SD has a greedy type S BOV installed on his supercharged car..it sounds very cool....but the charger is pumping boost even while its blowing off so it doesnt matter..it doesnt save any energy..if anything it costs some sincethe charger has to work to replave the air you blow off...I think it sounds cool though...on my turbo car I plan to use one
Branden

 

[vr6machine]

Got the BOV setup on my car. Sounds nice, but I really couldn't say whether or not there were any benefits or harm done by putting it in.

 

[Dextrose]

Re: BOV with vortech supercharger?? (Padfan1)

quote:[HR][/HR]fine you cry baby ill alaborate..a guy here in SD has a greedy type S BOV installed on his supercharged car..it sounds very cool....but the charger is pumping boost even while its blowing off so it doesnt matter..it doesnt save any energy..if anything it costs some sincethe charger has to work to replave the air you blow off...I think it sounds cool though...on my turbo car I plan to use one
Branden[HR][/HR]​

Right. I guess I'm more concerned about aleviating un-necessary load/stress/boost on the engine...i.e. during times of non-acceleration, etc. I think it's fairly obvious that you're not going to GAIN anything in terms of peformance numbers. Maybe makre things a bit earier on your engine and charger...thus prolonging the life of both? I guess that's what I'm really getting at. http://****************.com/smile/emthup.gif

 

[vr6machine]

That is why I put the BOV on my car. I thought it would prolong the life of the engine and charger, but no proof of course. I think the most important part is just making sure it wouldn't hurt performance or the engine. If it helps or stays the same, ah well.

 

[Dextrose]

Re: BOV with vortech supercharger?? (vr6machine)

quote:[HR][/HR]That is why I put the BOV on my car. I thought it would prolong the life of the engine and charger, but no proof of course. I think the most important part is just making sure it wouldn't hurt performance or the engine. If it helps or stays the same, ah well. [HR][/HR]​

I would have to agree with that. I mean as long as it isn't TRULY hurting anything (assuming a proper setup)...and there is at least a chance that it's possibly prolonging the life of the charger and engine...then why not??

 

[jwatts]

Re: BOV with vortech supercharger?? (Dextrose)

IF you already have some sort of bypass, like the G60 does, then a BOV is redundant and not really needed. If not, then there is a pressure spike at max rpm and boost when the throttle blade is closed. Figure that it's well over 20 psi for a 10 psi setup... maybe more. Don't really know the exact figure. This surge will stress the impeller. Since the impeller is made of Aluminum in most cases, it has a limited cycle life. Eventually it will fatigue and fail (may be a long time, though). If you can reduce the forces, the cycle life will be much longer.
routing should be such that it doesn't pull anymore air through the MAF when it's releasing pressure. That would help to quell the rich/stalling condition when letting off the gas.
Hope this helps

 

[Dextrose]

Re: BOV with vortech supercharger?? (jwatts)

Jwatts, you make a good point. Just the issue I was worried about. I had no idea that boost spiked THAT high. I suppose a BOV would actually be quite handy for situations like that...right?

 

[ABTGOLF]

Re: BOV with vortech supercharger?? (Dextrose)

Dude i usto have a greddy type S on my charger, call me up man ill tell ya all bout it