Vac line size

[benebob]

Gonna work on syncing the throttle bodies when it cools off, Might as well replace the vac lines.  Can't find what size they are anymore  are the 5 or 6mm lines?

[JoeDirt]

I use 6.3mm or 1/4"... braided fuel line.

[Bixxer Bob]

they are 6mm stubs; I used 5mm pipe  because it was a tight fit.

[metalguru]

Use 5mm silicon VACUUM TUBE as the 6mm will eventually kink on the tight curves. Also the 6mm will loosen at the stubs.