help, can i run tial bov with 22psi springs, if im only running 16-17?
08-24-2010, 11:37 AM
#1
help, can i run tial bov with 22psi springs, if im only running 16-17? will everything be ok im havin a tial 50mm shipped to me with the 22psi springs but for tuning and wat not ill only be running 16-17psi will this be ok??! and will the bov work correctly?
08-24-2010, 12:20 PM
#3
I thought your BOV spring is based off of the vacuum your engine makes at idle. That's how I picked my spring.
http://www.tialmedia.com/documents/w3_tial_bov50_sp.pdf
http://www.tialmedia.com/documents/w3_tial_bov50_sp.pdf
08-24-2010, 12:32 PM
#5
Look exactly what the PDF from tial says. What is your vacuum at idle? Either way I think you'd be ok just on the dyno, but thats not from experience.
I think you're getting confused. The pink spring for 22-23 in/hg vacuum at idle is a ,12 psi spring; which is the largest they show that they make for that BOV. For what its worth I make about 14-15 in/hg vacuum at idle.
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08-24-2010, 04:46 PM
#8
You should understand what's going on. Really the spring is have is probably not what you want. Will it work for the dyno, it'll probably be fine, but no way i'd leave it like that.
It's not confusing at all. Step 1: look at your boost gauge, how much vacuum do you make at idle. Step 2: Look at a chart that tells you exactly what spring to use based on the vacuum.
How is that complicated?
08-24-2010, 05:08 PM
#9
You should understand what's going on. Really the spring is have is probably not what you want. Will it work for the dyno, it'll probably be fine, but no way i'd leave it like that.
It's not confusing at all. Step 1: look at your boost gauge, how much vacuum do you make at idle. Step 2: Look at a chart that tells you exactly what spring to use based on the vacuum.
How is that complicated?
It's not confusing at all. Step 1: look at your boost gauge, how much vacuum do you make at idle. Step 2: Look at a chart that tells you exactly what spring to use based on the vacuum.
How is that complicated?
BOV spring has NOTHING to do with how much boost you run. It only needs to be strong enough to keep the BOV shut when idling. The boost from the vac/boost hose going to it will be holding it shut with what ever amount of boost your making at a 1:1 ratio.
08-24-2010, 10:11 PM
#13
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These guys are trying to steer you right, the bov spring is sized based on your idle vacuum, not your intended peak boost pressure. How many cubes are you running and what size cam? This will give us an idea of how much vacuum you can expect to see once you fire it up and will help you size your bov spring. Like kbracing96 said, yes, you can use it as-is when tuning without causing any harm, but the bov will not be operating optimally.
