11.5psi, there is a diaphragm in the inlet manifold that cracks off when u reach over 11.5 to stop overboost. if you want to wind up the boost ull need to drill out the rivets and put a bigger spring in, or machine up a big bolt to blank it off. i have done so in my Navara and running 20psi with big intercooler. never had a problem
20
35 psi with stock turbo or 49 psi with stock head gasket.
Boost pressure is the amount of pressure above normal atmospheric pressure the turbo/supercharger is producing. Can be expressed in PSI (US used) or BAR (mainly outside the US). BAR = (boost pressure) * 14.7 (atmospheric pressure) / 14.7 (atmospheric pressure), an example 8psi of boost equals: 14.7+8/14.7 = 1.54bar
boost pressure, as you call it, will not show on gauge,if you have one, while engine is at idle the turbo pressure does not boost but runs all the time according to the revs of engine
you could have a pressure leak when the turbo spools up... check all your clamps and check for cracks or holes in your intercooler
no it doesn't so dont by thi7
If talking about a car, it means the amount of air pressure created by the turbo.
The waste gate controls the boost coming out of a turbo by bleeding off exhaust gases/pressure to the turbo's turbine. By control the amount of gases/pressure the turbine see's, it controls the turbo's speed/pressure.
When you press on the accellerator, combustion gas creates more exhaust pressure. The rise in exhaust pressure increases the speed of the turbo, thereby increasing the intake pressure, which is the turbo boost. You will not be able to benefit from turbo boost until the turbo spins up. That's where the lag comes from. It's inherent in turbo systems. Ive only had one turbo car but I know it had an air pressure activated dump gate that would only allow turbo air pressure to enter the intake at a preset PSI. There were ways to increase ( bigger boost) or decrease (more power throughout driving range) the gate release point with rheastats or performance chips.
The turbo blow off valve works by:If the throttle returns to idle while at high boost the valve opens and relives the pressure preventing turbo damage and speeding boost recovery time.This is done by use of a over pressure sensorOr by use of a throttle position and boost pressure sensor working together.
Yes.
Turbo chargers are all about boost. The amount of additional horsepower will depend on the amount of boost pressure you use. So just adding a twin turbo you can add just a few horsepower all the way to hundreds of additional horsepower.