Tial BOV

[65Cobra]

I noticed in addition to an internal spring, the Tial BOV's also have an air fitting on top with a 10mm hose barb for "quick actuator response". One of the posts I read in the past mentioned how some BOV's also incorporate a Pop-Off Valve. Is that what the purpose of the air fitting on the Tial is for?

I've seen references to Blow-Off Valves (BOV), Pop-Off Valves (POV), Hobbs Switches and Bypass Valves.

I completely understand the BOV and Hobbs Switch but I'm not quite sure how a POV operates, nor have I ever (knowingly) seen one. I'm also in the dark about a Bypass Valve, or is that just a different name for a BOV.

 

[smithabusa]

its the signal line from the TBs, it has to be on there to work.

When you have pressure in the plenum and vacuum in the TBs it will open.

 

[cdhoroho]

the spring is to hold the BOV closed to a set psi and wont open untill it reaches a set vacuum amount

the signal line acts in both ways to hold closed under boost then open when seeing the vacuum under the TBs

 

[65Cobra]

Thanks... so the Tial BOV only functions as a BOV. Then how does a Pop-Off Valve work, what does it look like, and where do I get one? And a Bypass Valve... or is that just a different name for something else?