"Vacuum" Hoses - Toyota Nation Forum : Toyota Car and Truck Forums

MTL1324 · 11-23-2002, 06:38 PM

Does anyone know the size of the vacuum hoses on the gen 3 v6? Or how I measure inside or outside? I have two different sizes coming from my stock intake

urusai · 11-24-2002, 12:39 PM

The one on the left feeding the crankcase vent is 12mm. The one on the right, the thicker one, is 15mm. Injen makes those size hoses. Its what I used, and its working for me.

MTL1324 · 11-24-2002, 03:18 PM

Thanks ! Did you make your own intake?

urusai · 11-24-2002, 11:50 PM

Yep. I'll post pics of it a little later when I meet up with my friend who has a digicam.

MTL1324 · 11-25-2002, 11:28 AM

cool do it up!!

racerhex · 11-25-2002, 12:18 PM

Quote:

The one on the left feeding the crankcase vent is 12mm. The one on the right, the thicker one, is 15mm. Injen makes those size hoses. Its what I used, and its working for me.

If thats the hose size what is the pipes size that they fit to? I need to know for CTmotorsport intake design for the top piece! Thanks

urusai · 11-25-2002, 06:43 PM

Quote:

Originally Posted by racerhex

If thats the hose size what is the pipes size that they fit to? I need to know for CTmotorsport intake design for the top piece! Thanks

Um, what? 12mm translates to about 1/2 inch (.472 inches more accurately) and 15mm is like 5/8th of an inch (.59 inches). Anyway, I'll post some pics and a write-up of how I did it in a couple of days as soon as I catch up with my friend.

racerhex · 11-26-2002, 09:12 AM

I understand the conversion but like say if the hose size is 12mm ok then the fitting that it fits to is the same size or is it smaller to fit the hose. I guess its the same size because 12mm for the hose is the inner dim. and the 12mm for the fitting to the pipe is 12mm outer! I think I answered my own question....duhhh..... :wink: ! eah post some stuff on it because Im about to get these done!