BOV? - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

 
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post #1 of 7 Old 05-15-2011, 06:14 PM Thread Starter
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BOV?

I have been thinking about putting a bov on my truck. Is this gonna help with reliability at all? I know an egr delete with wastegate would be the best bet but i dont quite have the funds for that yet. Any info would be helpfull. Thanks.

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post #2 of 7 Old 05-16-2011, 05:25 AM
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Adding a BOV to a truck that still has the full EGR system in place wont do anything. These trucks are wastegated through the EGR system, so if its in place than you are fine. If the EGR is deleted than like you said, you will see some benefits in having a BOV/wastegated system on the truck.

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post #3 of 7 Old 05-17-2011, 07:00 PM
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Originally Posted by blackcloud2k View Post
Adding a BOV to a truck that still has the full EGR system in place wont do anything. These trucks are wastegated through the EGR system, so if its in place than you are fine. If the EGR is deleted than like you said, you will see some benefits in having a BOV/wastegated system on the truck.
Would this still be true if the EGR system is turned off via tuning?? Spartan only cycles the EGR valve at idle, so wouldn't a BOV be helpful if when closing the throttle quickly under high boost while the EGR valve is shut???
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post #4 of 7 Old 05-17-2011, 07:49 PM
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Are you asking about a blow off valve or a wastegate? They do totally different things, which why I ask.

A blow off valve helps eliminate compressor surge, which is better on your turbos. However, I do not think this is necessary.

A wastegate is used to reduce back/drive pressure, which is hard on your valvetrain.

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post #5 of 7 Old 05-17-2011, 07:50 PM
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so can this be done to a 6.0?
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post #6 of 7 Old 05-19-2011, 01:43 PM
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Originally Posted by 08stroker250 View Post
Are you asking about a blow off valve or a wastegate? They do totally different things, which why I ask.

A blow off valve helps eliminate compressor surge, which is better on your turbos. However, I do not think this is necessary.

A wastegate is used to reduce back/drive pressure, which is hard on your valvetrain.
Yes but couldn't a BOV help with drive pressure too. If you don't have either a wastegate or BOV (which we don't) and the EGR sytem is turned off, when under high boost and you lift off the throttle quickly, boost would build in the turbo discharge with no place to go and drive pressure will also go up as outlet pressure of the turbo rises. So wouldn't a BOV , relieving the pressure at the outlet of the turbo, help keep drive pressure in check under a high boost , rapid throotle close situation??? I figure a full EGR delete with wastegate would be the best but those are damn expensive.
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post #7 of 7 Old 05-19-2011, 03:12 PM
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Yes but couldn't a BOV help with drive pressure too. If you don't have either a wastegate or BOV (which we don't) and the EGR sytem is turned off, when under high boost and you lift off the throttle quickly, boost would build in the turbo discharge with no place to go and drive pressure will also go up as outlet pressure of the turbo rises. So wouldn't a BOV , relieving the pressure at the outlet of the turbo, help keep drive pressure in check under a high boost , rapid throotle close situation??? I figure a full EGR delete with wastegate would be the best but those are damn expensive.
No. A BOV will not help with drive pressure. It relieves compressor surge, therefore it helps the turbos.

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2012 Ford F-250 Lariat CC/SB

Mods - Spartan tuned via laptop, 4" AFE stainless exhaust system, 2.5" PMF BMC leveling spacers, 3" PMF lift blocks, Fox Racing 2.0 shocks, Recon smoked mirror & cab lights
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