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Analysis of Intake Manifold and Runner Modifications

2:10
20:26
440.6K views

At 2:10 in

UP CLOSE: Ernie Irvan's 1991 Daytona 500 Winning Intake Manifold & Cylinder Heads (Larry McClure)

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What happens here

The intake manifold features an integrated "valley plate" that is not separate, meaning it was made as a single piece. The intake runners are heavily modified with epoxy to change their volume, and the manifold itself shows extensive welding, indicating it was cut apart and put back together. This complex welding work was performed by a specialist welder named Mark Giles. The small holes between the runners are designed to keep the gaskets from moving.

Goal: Comprehend the intricate modifications made to the intake manifold, including runner optimization and structural changes

Tools and materials

  • Epoxy Not specified — Changing the volume of the intake runners

What they say

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interesting what these heads see the uh the valley plate is made under the intake manifold because it's not separate yeah one piece so when you change it you got into antifreeze these are all epoxies to change the runner volume one of these little holes between the runners for for the in keep the gaskets from moving really I don't know if you had a light you could probably see down in there but this intake I mean no telling I mean you look right here at the whale beads oh wow so you know it's been uh they've got another Marine back anymore yeah what the heck is going on in there it looks like cylinders with ridges and little holes

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