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Bov Or Turbo Flutter

quick 33

By quick 33,
in Queensland

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Danski Veteran

Danski

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yeah man i get ya now , so is there any one out there that can tell me for sure that removing the bov will defanitly cause damage to my turbo ?

There will always be people out there that say it defiantly will and others will say defiantly wont.

IMO the cars come with a stock BOV for a reason so regardless of whether its damaging to the turbo ide just leave it on (plumb back or atmo your choice)

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Bunta Grand Master

Bunta

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A mate of mine ran his to4z on his rb26 for over 2 years with no BOV and never had issues, it probably is bad for your turbo over the long run but we are probably talking a very long time!

but if it is a bush bearing turbo apparently the damage occurs much sooner

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Danski Veteran

Danski

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Even if its not doing damage you loose efficiency because of the back pressure on the turbo . . . .

Blowoff valves are used to prevent compressor surge, a phenomenon that readily occurs when lifting off the throttle of an unvented, turbocharged engine. When the throttle plate on a turbocharged engine closes, the high pressure air in the intake system is trapped by the throttle and a pressure wave is forced back into the compressor. The compressor wheel slows rapidly and may even stall, and the driver will notice a fluttering air sound. The rapid slowing or stalling stresses the turbo and imparts severe turbo lag if the driver accelerates immediately after the surge event.

Quoted from good old wikipedia :3some:

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Oblivion Grand Master

Oblivion

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A mate of mine ran his to4z on his rb26 for over 2 years with no BOV and never had issues, it probably is bad for your turbo over the long run but we are probably talking a very long time!

but if it is a bush bearing turbo apparently the damage occurs much sooner

Zachary!

I will affect the life of your turbo, but no damage so that you will notice it. But if you were to look at it as that if you had a BOV then your turbo will last longer then if you didnt have one then yes damage occurs.

Lets say 200,000 klm turbo life with BOV. to

180,000 klm turbo life without BOV.

It's not something that can be documented effectively, and also chances are that something else would cause your turbo to shit itself before this time anyway, like oil contamination.

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r33cruiser Grand Master

r33cruiser

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There will always be people out there that say it defiantly will and others will say defiantly wont.

IMO the cars come with a stock BOV for a reason so regardless of whether its damaging to the turbo ide just leave it on (plumb back or atmo your choice)

??

stock ca's dont come with bov's

stock fj's dont come with bov's

check this out http://fdowners.com/showthread.php?t=217

'But at the end of the day. We could turn this into a 5yr long thread debating whether or not u NEEEEED them.

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astrotristan Grand Master

astrotristan

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compression surge is not healthy unless u live in vic and drive a VL ? and go to bell st maccers

i loled :)

yeah man i get ya now , so is there any one out there that can tell me for sure that removing the bov will defanitly cause damage to my turbo ?

yep, i wouldnt do it, especially on a brand new turbo - if it was the stock turbz and i was looking to upgrade in the near future i'd be more inclined to block it off

bov's are shit.. enough said.

and what turbo are you running?

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Beelzebub89 Grand Master

Beelzebub89

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won't affect turbo life noticeably. May affect turbo efficiency ie more lag. Does it really matter? All you need to know is if you have a BOV and want it to be legal make sure it is plumbed back into the intake. /End thread.

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shaggy_76 Contributor

shaggy_76

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This is a very interesting topic and makes me feel like I've been living under a rock as I never new that you could run a turbo charged engine without a BOV. I've quite enjoyed reading this thread.

I see there is no definitive answer so one would have to conclude that if you think its right for your cars setup than so be it. Some people like black some people like white none are wrong or better than the other just a personal preference.

In my opinion a factory BOV setup is to make the cars 'nice to drive' with minimal engine bay noises. They may also help meet certain emission standards. And possibly aid in the re-spool of the turbo between gears how ever marginal the difference would be.

It would be interesting to know how many people are running 'NO' BOV with there factory turbo's and if they have experienced any problems and or failure?

As I am keen to try a 'NO' BOV setup on my factory Toyota Caldina GT-4. Also how much boost can safely be run on a factory turbo with 'NO' BOV? Is there any tuners who specialize in these setups?

Great thread guys I hope we can find some solid Pro's and Con's for both setups.

Maybe someone could start a poll to see haw many people out there run what setup?

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Oblivion Grand Master

Oblivion

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This is a very interesting topic and makes me feel like I've been living under a rock as I never new that you could run a turbo charged engine without a BOV. I've quite enjoyed reading this thread.

I see there is no definitive answer so one would have to conclude that if you think its right for your cars setup than so be it. Some people like black some people like white none are wrong or better than the other just a personal preference.

In my opinion a factory BOV setup is to make the cars 'nice to drive' with minimal engine bay noises. They may also help meet certain emission standards. And possibly aid in the re-spool of the turbo between gears how ever marginal the difference would be.

It would be interesting to know how many people are running 'NO' BOV with there factory turbo's and if they have experienced any problems and or failure?

As I am keen to try a 'NO' BOV setup on my factory Toyota Caldina GT-4. Also how much boost can safely be run on a factory turbo with 'NO' BOV? Is there any tuners who specialize in these setups?

Great thread guys I hope we can find some solid Pro's and Con's for both setups.

Maybe someone could start a poll to see haw many people out there run what setup?

You can run as much boost as you usually would....running NO BOV should create less problems really.

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shaggy_76 Contributor

shaggy_76

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White is better though :P

:D I think I'll leave that one alone...

You can run as much boost as you usually would....running NO BOV should create less problems really.

Cheers mate. I might give it a go soon.

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