Quote:
Originally Posted by shabby
The vacuum line provides both pressure and vacuum to the bov, pressure keeps the bov closed and vacuum helps open it.
The hks bov is different, its a pull type design and doesnt need pressure to keep closed. Unless the stock bov is a pull type design, which i doubt, it works totally different then the hks unit.
Here is a diagram of the stock bov, as you can see its not even remotely the same as the hks bov. The only thing keeping the oem bov closed is the spring, that simply cant hold all the pressure in the piping so it needs additional pressure that the vacuum line provides. |
apparently the design is varied, however, the spring apparently does have this capability, since it is currently doing so on my car right now and there is no leak. like i said before, i can say its blue and you can say its white but facts dont lie. as tested on my car the facts say that it doesnt leak ergo it doesnt leak. by the way you are neglecting that by capping the vacuum line insert the pressured in the valve will also work in conjunction with the spring to hold it shut. air has ot go somewhere and with the hole closed up it simply cannot.
