Is compressor surge bad for your turbo on low boost?

[adrianfromthecastle]

I'm talking about low, like 0.2 or 0.1 bar. I have the Greddy RS bov, and I could adjust the spring to make it softer, but I'm not gonna do it unless I should...

[nwmrkt]

why not, just adjust it man. No surge is best. Do you like the sound lol?

[Geno750]

I'm talking about low, like 0.2 or 0.1 bar. I have the Greddy RS bov, and I could adjust the spring to make it softer, but I'm not gonna do it unless I should...

You will be fine with surge at that small amount of boost, I wouldn't worry about it.

[AE86Gio15]

theres a lot of drifters out there running no bov at all and i have yet to hear of a turbo being damaged.

[adrianfromthecastle]

why not, just adjust it man. No surge is best. Do you like the sound lol?

nah cuz if I make it softer, I'm afraid I'll stall more.

theres a lot of drifters out there running no bov at all and i have yet to hear of a turbo being damaged.

that cuz they still have a stock recirculation valve

[nwmrkt]

nah cuz if I make it softer, I'm afraid I'll stall more.

ic coolio.

[AE86Gio15]

nah cuz if I make it softer, I'm afraid I'll stall more.

that cuz they still have a stock recirculation valve

nope not even the stock recirculation valve

[jlee29]

i agree

[jubee]

On a Stock T25 turbo compressor serge is gonna end its life quickly but on bigger turbos you really dont have to worrie.

[AE86Gio15]

not from what i have seen.

[adrianfromthecastle]

not from what i have seen.

that's insane dude... I've never heard such a thing

[homeslicej2]

I'm relatively new to turbos (as you know) but everything I've read or heard says that any compressor surge=not good. My 0.01 cents

[Seishuku]

At low turbine speeds it isn't a problem, but when you're running right in the efficiency range it isn't good at all, on ANY turbo.

At low boost (low turbine/compressor speed, probably around 1/4 to 1/3 the normal boost) it isn't going to cause any problems at all, but if you're getting surge at higher boost, that isn't good.

Edit:Although, no compressor surge would be ideal.

[Logan76]

Compressor surge is your turbo spinning backwards in a way, do you really think thats good for your vehicle? ITS NEVER GOOD! I dont care what anyone above me said, Running no BOV at all is ****ing terrible, at .1bar i doubt youll have trouble, but if you dont run a BOV, your dumb.

[DriftReadyS13]

get reid of the surge and you wont have to worry. it was a big thing on my srt-4 . espescially high gear low rpm. but i dunno stalling isnt good for the car either . but what do i know

[S3t0_S13]

since i can lend no knowledgable information to this thread

and i cant find a decent pic of the N/A Logo

seto ftl

[Seishuku]

Compressor surge is a turbine stall, it's not spinning backwards.To spin it backwards, you would need one hell of a large volume of back-flowing air at low turbine speeds. And the only real way for that to happen, is with a very large turbo. Which still isn't very likely, IMO.

But like I said, a turbine stall at high speeds is very bad, and could actually spin the compressor wheel's lock nut off.

But you are right, no bypass valve is a bad idea, but then again, venting to atmosphere with MAFS based management is a bad idea, but people will still do it.Not saying that a lot of people run with out a BOV, but it's their car and their engine and they'll do what they want to it.

Compressor surge is your turbo spinning backwards in a way, do you really think thats good for your vehicle? ITS NEVER GOOD! I dont care what anyone above me said, Running no BOV at all is ****ing terrible, at .1bar i doubt youll have trouble, but if you dont run a BOV, your dumb.

[Logan76]

Yes, I never said to vent to the atmosphere, A recirculated BOV, is always your best bet unless your running blow through MAF's or a Map sensor, Ive always been a firm believer that BOV's to the atmosphere are rice, especially if its hurting your performance.

[AE86Gio15]

iirc some of the drift alliance members do not run bov's
Modified by AE86Gio15 at 4:12 AM 7/19/2007