Economy blow off valve
Thread Starter
Joined: Sep 2007
Posts: 4,188
Likes: 292
From: woodbine, md
Economy blow off valve What are you guys using that's budget yet reliable, something that wont break the bank. I was looking at the Turbo Smart one for $129, prob don't need a huge one.
I don't run one like a stock buick gn. never had an issue . there are plenty of pro's and con's to running one .arguments both ways but my turbo's as tight as the day it went on 5 years ago. but I don't run 30 psi eather.
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Verdad Gallardo Thread Starter
Joined: Sep 2007
Posts: 4,188
Likes: 292
From: woodbine, md
Most of them seem to come with alumn. weld on flanges, I use steel, there are some steel flanges but not sure if they are designed to fit these valves.
They all seem to be the same, just diff names, lol.
They all seem to be the same, just diff names, lol.
TECH Enthusiast
Joined: Dec 2016
Posts: 547
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From: Texas
i got a rev9 one years ago when i did my build. i cut the spring down inside and ive never had a issue since. the spring was waaaay to stiff and the cold side pipe was popping off the coupling. after i cut the spring down never an issue again. been that way for a couple years.
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9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Been like it past 2 years although not a huge amount of usage.
I did have one for a while after I changed from the Vortech to turbos, but I changed some pipework and couldnt be bothered welding up another flange etc for the BOV and just ran without.
Although also since changed to DBW in the middle of last year...so you can play with throttle blade openings a bit that would allow airflow but not affect the actual feel of driving when lifting foot off the pedal etc.
Thread Starter
Joined: Sep 2007
Posts: 4,188
Likes: 292
From: woodbine, md
When I first started running Prochargers, I didn't run a valve-at cruise I would get a surging (hence surge valve, lol) once I installed the valve, it eliminated it. I run them, works for me.
9 Second Club
Joined: Nov 2003
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From: Norn Iron
They operate exactly the same way. I just used the Big Red when I changed to turbos.
Main difference is softer springing in the SC application so it will open much easier, although some will also have a much higher diaphragm to valve ratio again to ensure more force to open/close it more easily.
Main difference is softer springing in the SC application so it will open much easier, although some will also have a much higher diaphragm to valve ratio again to ensure more force to open/close it more easily.
Yes and no… out of the box they operate a little differently. I’m sure you could put a lighter spring in a “turbo BOV” and filter it, but most aren’t going to do that.
SC applications are made to stay open at idle and cruise… Turbo stuff is not. Most of the super charger BOV’s that come with the kits are designed differently as well with a mechanical arm on them. They generally don't seal as well either and should be filtered.
SC applications are made to stay open at idle and cruise… Turbo stuff is not. Most of the super charger BOV’s that come with the kits are designed differently as well with a mechanical arm on them. They generally don't seal as well either and should be filtered.