Hi Friends,
A new Ask Ed is coming soon to Barry T's Garage.
Ed had a Chevrolet six-cylinder exhaust manifold in his hands. A viewer had asked him to revisit something he mentioned in an earlier show: how do you split one for dual exhaust?
This time, Ed could show us on the part itself. It's a manifold for a Chevrolet 230, and the most important detail is the cut he doesn't make.
Why not just saw the casting into two pieces? Because then the mounting flanges have to line up again when the manifold goes back on the engine. Ed shows a narrow slot, a steel divider and a second outlet—all while leaving the original mounting structure together.
Then he turns the manifold and catches another problem. The added outlet on this example points right at the starter. Ed shows where he'd rather have the pipe come out.
And that's just the first shop question in Ask Ed 68:
Why does air speed matter when choosing an intake and Weber IDAs for a big-block Chevrolet boat engine?
Does faded cylinder crosshatch mean an otherwise healthy engine needs rebuilding?
For a street-driven Chevrolet 377, would Ed choose a Holley or an Edelbrock carburetor?
What makes a 1937 Ford 21-stud Flathead a difficult rebuild?
What did Ed do with $50–$75 circle-track cars in the 1950s?
What was inside those old Frantz “toilet-paper” oil filters?
Ed turns the Chevrolet six exhaust manifold in his hands while explaining where the cut should stop.
“You haven't separated anything.” — Ed Smith
That's Ed's point about keeping the manifold aligned. But the starter-clearance catch makes the demonstration more interesting: a modification can solve one problem and create another if you don't picture the part back on the engine.
Later, Ed recalls a fuel-injected Chrysler 426 Hemi in a jet boat and the first change he made to his 1936 Ford when he wanted to go racing. The questions move from the bench to the track, but Ed keeps coming back to what a part actually does once it's installed.
Ask Ed 68 is coming soon. Watch for Split a Chevy Six Manifold—Without Cutting It in Two | Ed Smith with Barry T | Ask Ed 68 on Barry T's Garage.
What would you like me to ask Ed next?
Barry T
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