Page 1 of 1
ISO: 8/9" Venturi tube(s)
Posted: Fri May 16, 2025 3:35 pm
by cwienk
I'm interested in changing my 4" venturis to 8/9" to increase vacuum pressure. I currently have one 4" on each side on a 170A.
cwienk.cfi(at)gmail.com
Re: ISO: 8/9" Venturi tube(s)
Posted: Fri May 16, 2025 3:52 pm
by DaveF
I've got two you can have. Worked great until recently removed.
PM me an address and I'll send them.
IMG_4973.jpeg
Re: ISO: 8/9" Venturi tube(s)
Posted: Fri May 16, 2025 3:53 pm
by brianm
I may have one in my hangar, I'll check the next time I'm out there. To help you with your search, the term "Super Venturi" is often used for 9-inch venturis. I believe it also crosses to Cessna part # 0511318-1. Univair has them brand new for $121.80.
Be careful with the salvage yards. They all carry lots of 4" venturis (AN5807-1) and they look so similar that it's easy to get the wrong part by mistake. When I was in the same boat some years ago I got the wrong venturi twice from one of the more reputable companies.
Re: ISO: 8/9" Venturi tube(s)
Posted: Tue May 20, 2025 7:06 pm
by GAHorn
cwienk wrote: ↑Fri May 16, 2025 3:35 pm
I'm interested in changing my 4" venturis to 8/9" to increase vacuum pressure. I currently have one 4" on each side on a 170A.
cwienk.cfi(at)gmail.com
It’s been discussed in other threads that Cessna placed dual venturiis on the Right side (see the IPC) and that venturiis on the Left side have been discovered to be “coasting” and ineffective.
I personally suspect that propeller “whirlwind” is the culprit of this oddity.
IMG_3365.png
IMG_3364.png