What is a ported lower intake manifold?
The VQ Boys Performance VQ35DE Ported Lower Intake Manifold is a stock intake manifold custom modified to produce significant gains in horsepower and torque across the the entire powerband. This is achieved by opening the runners to their largest possible diameter while maintaining the factory shape for optimal flow.
What is the lower intake manifold gasket?
What is an intake manifold gasket and how does it work? The lower intake manifold is a cast aluminum or molded plastic chamber bolted to the cylinder head of the engine. The intake manifold must be tightly sealed to the cylinder head(s) using a gasket in order to prevent air, oil, or engine coolant leaks.
What does ported intake mean?
Porting involves removing material in either a cylinder head or the intake manifold, in order to improve airflow. Porting is done with a grinding tool, much like a Dremel, only larger. You smooth out the passageways to improve flow, and sometimes enlarge them as well, to increase air volume.
Why does the Nissan VQ35DE have high oil consumption?
High oil consumption. The VQ35DE has a catalytic converter and they are very sensitive to the fuel quality. They produce ceramic dust, which damaging the cylinders sleeve and piston rings. As a result, the engine has low compression, high fuel and oil consumption. Such an engine requires repair or replacement.
How big is the intake valve on a Nissan VQ35DE?
The intake valve diameter is 37.0-37.3 mm (1.45-1.46 in) on early versions or 36.6-36.9 mm (1.44-1.45) on later versions and the exhaust valve diameter is 31.2-31.5 mm (1.22-1.24 in) on early versions or 30.2-30.5 mm (1.18-1.20 in) on later versions.
How does the intake manifold affect the power of the engine?
This depends greatly upon the design of the intake manifold. Dry fuel vapor is an ideal form of fuel charge, but present-day fuel prevents this unless the mixture is subjected to high temperature. If the fuel charge is heated too highly, the power of the engine is reduced because the heat expands the fuel charge.
How much horsepower does a VQ35DE engine have?
Unfortunately, the VQ35DE is limited to about 400whp due to weak connecting rods. However, with a built internals the stock block can take 700whp or more if you’re crazy enough. Just like any other engine in the world, the VQ35DE has some issues.