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Bov Wont Vent, Cleaned And Checked Everything

2gceffy

By 2gceffy,
in Engines & Forced Induction

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2gceffy Rising Star

2gceffy

Posted
Posted

hey guys

i recently upgraded my BOV from a apexi item to a blitz item

since iv installed the blitz bov it wont vent, iv taken it apart cleaned it, the piston moves freely with no obstruction and backed off the spring all the way out its only like 3 turns in !!! my previous bov was atmo so i know the system works..

iv replaced the vac line there is no leak and i dont know whats the deal !

i was playing with it all afternoon and it vented like 3 out of 1000 !!! why wont it vent everytime??

car idles fine everything seems perfect cept the fact it doesnt vent all i gets flutter

oh btw this is on rb25 and im running 12psi which should be more than enough to open an un-tensioned bov

so if anyone has any suggestions to how i might fix this cause iv tried everything i can think of

thank you

Jarryd

2gceffy Rising Star

2gceffy

Posted
  • Author
Posted

got it working !!!

i got some 1200grit wet n dry and rubbed back everything to remove any burs or imperfections, used motor oil insted of water of course

put back together with grease insted of motor oil and seems to be working all good now

though i removed the plate that controls spring tension so i hope when i go for a dirve it wont open really early and leak..

so if anyone has the same prob just give that a go and see if it makes a difference

sky-017 Proficient

sky-017

Posted
Posted (edited)

haha point and case , if he has a knock off , then there is the answer to his question . go put your stock bov back on , they arent worth the hassel . unless your prepaired to spend over $450 for something really genuine and decent , otherwise your going to have leaks , idle troubles and just a plain old waiste of time and money

Edited by sky-017
2gceffy Rising Star

2gceffy

Posted
  • Author
Posted (edited)

its a genuine blitz bov

it only works in like 1st n 2nd, prob more presure in 3rd n doesnt release...

the spring tension is fine when it works it opens early as like hardly on boost.

the vac is fine it almost sucks my finger off

the internals seem fine i cant find any mechanical flaw in it, ie chips in piston n that

i was thinkin of buyin a new spring?

i got a prac day today and dont want to run flutter !! to much on/off throttle

it just doesnt make sence

btw its the blitz bov with the trumpet with 4 holes

Edited by 2gceffy
RBwhatever Veteran

RBwhatever

Posted
Posted

can't help you there. It seems very weird. Maybe throw your apexi one back on.

Maybe there's a leak in the diaphragm or something, so when the vac line tries to suck the diaphragm up to release, the air is getting around or through the diaphragm somehow..... Maybe connect a line to the nipple and see if you can simulate it.

Just a guess.

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