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Flutter And Vent?!

JoelyMoley

By JoelyMoley,
in Engines & Forced Induction

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JoelyMoley

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hey guys, just strapped a new Blitz DD BOV onto my r33 gtst and even when the adjustment screw is on the loosest im still getting flutter at low boost and flutter followed with a vent, just wondering if this ok or if its going to ruin the turbo

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https://www.sau.com.au/forums/topic/331104-flutter-and-vent/
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JoelyMoley Mentor

JoelyMoley

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If its "New" it shouldnt need oiling. It could be the fact that the spring is alot harder than stock even on soft, so with low boost its just a bit slower to react.

My Greddy Type RS does it too.

sorry, my mistake using the word new, its a used bov, new to me :):P yea thats what i was thinking, its probably really made for 15+psi when im only running .8bar it does vent properly at/close to full boost, just abit worried about any detrimental effects the surge may have (damn it sounds trippy fluttering/venting :()

gotRICE? Veteran

gotRICE?

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sorry, my mistake using the word new, its a used bov, new to me :D:) yea thats what i was thinking, its probably really made for 15+psi when im only running .8bar it does vent properly at/close to full boost, just abit worried about any detrimental effects the surge may have (damn it sounds trippy fluttering/venting :D)

:D I figured.

Could be the reason then.

I know with my Greddy, i got it brand new, and it only flutters at very low boost and vac. But if i rev it a bit higher, even if still only 2-3psi it opens at per normal. No problems at all at full boost.

I dont mind the flutter. Like you said, sounds trippy haha. And seeing as its only doing it at very low boost im not worried about this "surge" people go on about. I always thought surge was when the compressor actually stalls under full boost. If it was surging you'd be seeing it on the boost gauge anywho wouldnt you?

JoelyMoley Mentor

JoelyMoley

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its funny that it actually holds boost better then the stockie ever did (even when it was working) at higher rpm the boost would be all over the place and the car would feel like it was coking at times, now its just perfect :D

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