Compressor Surge

[iceminion]

I "upgraded" to a knockoff BOV

Now, I had a factory new 14B :) that worked great, however I was using a knockoff bov and it alwasy "fluttered" couldn't make it go away.

A couple days later the innocent 14B blew up, the smoke my car made was epic!!! (the turbine wheel broke off, and dented my tubular O2 housing)

That turbo is a victim of compressor surge.

I have never liked crushing the 1G bov, so I leave them un-crushed

After reading the following mods, I decided to try this.

http://www.thedodgegarage.com/turbo_bov_mod.html

And now I have a ruined e3-16G and a ruined bullseye v-trim.

WTF guys? is any fluttering of a BOV acceptable? or should it be clean "pffffft" after letting off of the throttle?

I don't want to ruin my SC61.

[scheides]

That mod works well, I'd say go for it. Why would you leave the crappy ebay one on if it sucked so bad?

When you let off, should be one solid 'woosh' or w/e. Compressor surge is when accellerating and not letting off though, like lugging in 5th around 3000rpms (or wherever boost onset is on your turbo) and the bov/turbo going 'chah-chah-chah-chah' until you let off....or don't and your turbo blows up.

Wait, where the F are the carnage pics? Post them or ban!

[iceminion]

Ok, ok, ill get u the carnage pics when I get home.

Well, the knockoff BOV killed the 14B (very very broken)

I did modify a stock BOV which killed my e3-16g (Lots of in and out shaft play, sill spins)

And the modified bov on the car which has the bullseye has oil coming out the compressor side of the turbo, I assume from the "flutter" effect of the BOV

Note: they didnt always flutter, sometimes there is a huge "woosh" at higher boost levels, but it did flutter at lower boost levels.

I have no idea

Im just going to get an expensive Tial and call it a day.

Maybe I can rebuild the e3-16g

[wheelhop]

WHY?

The 1g bov is much more affordable and after the dodge garage mod, holds just about any pressure you can throw at it. And if your turbos failed after doing this mod, IT IS NOT BECAUSE OF YOUR BOV> > >AT ALL!

[Kracka]

The stock Evo IX BOV flutters so it can't be too bad for the turbo. Up until recently a lot of factory turbocharged applications didn't even come with BOV/DV's and those turbos had no problem lasting a long time. I'm betting your issue lies somewhere else.

[iceminion]

Then why is it fluttering? why is it compressor surging? rev the engine with hand near (not close) to the turbo and feel the air come out and get sucked back in when the BOV opens...

As far as I understand, if the BOV flutters at all, it is wrong.

[Kracka]

Why are you relating compressor surge to BOV flutter?

[Shane@DBPerformance]

Real compressor surge comes from the compressor and happens when a turbo makes too much boost at too low of an RPM. It's common to see if on 61mm turbos without anti-surge comp housing when running 20+psi on a 2.0l. They often surge bad when during spool in the 20-30psi range in the mid RPMs.

[Kevin 1G Drummer]

As others have stated, the BOV has nothing to do with the killing of your turbos. I would start by looking into your oiling system. Maybe you have too much/not enough oil pressure at the turbo?

[JET]

Yeah, BOv flutter and compressor surge are not related at all. I wouldn't worry about BOV flutter, that just means there isn't enough air coming out to keep it open all the time, it should not hurt anything. I doubt you are getting compressor surge on those little turbos either, the SC61 might, but not the others.