Intake manifold build
#190
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Here is some newer pics, and one of a flush mount velocity stack done recently.
Also shown in the pics is the new tapering runners.
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Here is some newer pics, and one of a flush mount velocity stack done recently.
Also shown in the pics is the new tapering runners.
#197
sounded like he was explaining what the velocity stacks are for to me..
Just think of a tapered runner as a very subtle velocity stack. By starting out with a larger diameter than the intake port of the head the effective unrestricted flow area can be equivalent to that of the head intake port diameter.
Notice the smaller unrestricted flow CSA (cross sectional area) in the top image. this same effect happens at the base of the velocity stack although it is not shown in the picture. The tapered runner helps combat the effects of this turbulence.
Just think of a tapered runner as a very subtle velocity stack. By starting out with a larger diameter than the intake port of the head the effective unrestricted flow area can be equivalent to that of the head intake port diameter.
Notice the smaller unrestricted flow CSA (cross sectional area) in the top image. this same effect happens at the base of the velocity stack although it is not shown in the picture. The tapered runner helps combat the effects of this turbulence.