One or Two BOV's? How to decide?
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Joined: Nov 2003
Posts: 13,616
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From: Norn Iron
Here's what scares me without a BOV. 92 mm throttle plate is about 10 square inches. Lets say at 20 psi, you close the throttle. Now you got 20 PSI on one side of the plate and a vacuum on the other side. So let's call it 30 pounds per square inch pushing against a 10 square inch plate or 300 lbs against the plate and shaft.
There are considerations and options all round. It probably does make sense to run a valve, whether one or two ( or more ) is irrelevant as ling as they're sized and positioned to do what you think they need to do. Some may do two purely for aesthetics, rather than actual function etc etc.
But in general, it probably is best to have some sort of escape path for boost on closing or even modulating the throttle at high loads.
When I was new to turbos and was building turbo 4 cylinder cars I installed BOV’s. Fanboi ****! That was over a decade ago. BOV’s are just another place for a leak. You should see the look on people’s face when I tell them I don’t run a BOV. It’s comical that people think you need one.
When I was new to turbos and was building turbo 4 cylinder cars I installed BOV’s. Fanboi ****! That was over a decade ago. BOV’s are just another place for a leak. You should see the look on people’s face when I tell them I don’t run a BOV. It’s comical that people think you need one.
When I was new to turbos and was building turbo 4 cylinder cars I installed BOV’s. Fanboi ****! That was over a decade ago. BOV’s are just another place for a leak. You should see the look on people’s face when I tell them I don’t run a BOV. It’s comical that people think you need one.
