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what u guys think of $50 bosch bov's?

Guest RaBZ3174

By Guest RaBZ3174,
in Engines & Forced Induction

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2fardown Experienced

2fardown

Posted
Posted

Blow off valves are blow off valves. Purchasing an aftermarket brand name BOV doesn't always mean its a quality product. Leave your stock one on unless its leaking. There is no performance gain in adding an aftermarket one. Save up for a worth while modification that you will benefit from.

Sorry didn't answer your question very well. Yes the Bosch BOV's are decent. I had a friend with one installed on his VL Turbo and it was loud. Did everything a BOV was supposed to do.

Zensoku Collaborator

Zensoku

Posted
Posted

boys boys boys. The Bosch BOV is a great blowoff valve, CAPA actually use two of these on all of their aftermarket Supercharger kits for Commodores, Falcons & Nissans - 6's and 8's...

Volvo, Saab and even some other european turbo cars use these from the factory...

I will only say this once: A BOV will only work best at holding pressures when it is mounted in the proper the location, (before throttle body is best) and whether or not it's vacuum line is receiving the same boost signal as the boost pressure that is trying to push the BOV open... This will ensure the BOV remains shut (no leaks) when both sides of the chamber have equal pressures. When you let your foot off the pdeal, the boost signal travelling along the vacuum line suddenly disappears (closed throttle, no positive pressure in the manifold) forcing the BOV open by the boost pressure trying to get past the throttle butterfly(s). Simple. No S*** i hear you say...

Well most factory BOV's leak because they are usually located after the turbo and before the intercooler, therefore when you increase the boost, the pressure drop across the restrictive intercooler core causes a lower than expected boost pressure to travel along the vacuum line (from the manifold) to the BOV, which causes it to leak.

The Bosch BOV is going to be exactly the same as your original BOV, but offers people an option when they are going to have a different inlet piping and want to ditch the stock setup. It's more functional rather than w**k value compared to other aftermarket valves, i reckon. Can be either rigged up to vent atmospherically or be plumbed back to the intake.

Part# 0 280 142 103 and can be bought for under $50 if you're lucky and know someone who has an account with Robert Bosch..

TTT Grand Master

TTT

Posted
Posted

to have the bosch bov venting to atmo without an AIR FLOW METER's car stalling, you will need to modify the bosch bov with a one way valve.

otherwise you MUST have it plumb back (unless your car doesn't have an air flow meter.)

if anyone wants details on how to make the bosch bov able to vent to atmo, I can post a link.

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