Vacuum Hose Diameter - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Dream240 · 02-28-2007, 10:21 AM

okay, flaming is expected. I'm feeling stupid today. And I did search (hose, size).

Exactly what is the correct size for all the small vacuum lines in our cars? Lines for the EGR, EGR-BPT, PAIR, TB, etc.
Is it 5/16" or 3/8". Also, to find out, you measure the inside diameter of the hose right? Not the outside diameter.

I just want to make sure I'm using the right size. I have been using 3/8" but maybe it's too big and causing some leaks? Or maybe I just have my sizes all screwed up.

thanks guys.

02-28-2007, 10:21 AM	#1
Dream240 Nissanaholic! Join Date: Dec 2002 Location: Inland Empire, California Age: 46 Posts: 2,188 Trader Rating: (8) Feedback Score: 8 reviews	Vacuum Hose Diameter okay, flaming is expected. I'm feeling stupid today. And I did search (hose, size). Exactly what is the correct size for all the small vacuum lines in our cars? Lines for the EGR, EGR-BPT, PAIR, TB, etc. Is it 5/16" or 3/8". Also, to find out, you measure the inside diameter of the hose right? Not the outside diameter. I just want to make sure I'm using the right size. I have been using 3/8" but maybe it's too big and causing some leaks? Or maybe I just have my sizes all screwed up. thanks guys. __________________ Don't mess with my monkey...he's loaded.