Vacuum hose inside diameters?

[skiddusmarkus]

I want to relpace them all as my car is still hunting for revs after an engine rebuild and it could possibly be an air leak somewhere.

 

[JU5TY]

Its not that expensive, so I just ended up buying every size samco did to ensure I had the right sizes.... :lol:

 

[Fast Guy]

Maybe 3mm at a guess?

 

[geoff pine]

not samco sport 5.omm b x 2.5mm w length 3 meters took the boost controler the one on passenger side wing with pipe that is attatched to it as iwanted to fit a boost gauge needed a t piece and the pipe took it to demon tweeks thay checked the pipe size with vernier calipers also got akit with the boost gauge the kit fited but could not renew the rest of my boost pipes the samco pipes way to big waste of a tenner still abs prob solved light now goes of and stays of :lol: