M20 ITB vacuum lines to vacuum manifold

[zaq123]

Do you guys think good healthy engine will collapse relatevly thin wall vacuum lines from the runner to the vacuum block when the vacuum at its highest ( off throttle)? Brake booster thick wall line makes sense due to the check valve but what's your thoughts on the lines from each runner to the manifold and from the manifold to the fuel regulator and the vacuum gauge?

Your thoughts?

[digger]

Define thin walled? If it’s actual vacuum line it should be ok