 Venturi on Weber 40s?, Venturi advice |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| Boothy |
 Jun 21 2022, 07:10 AM
Post
#1
|
|
Member  Group: Members Posts: 91 Joined: 17-January 19 From: Abington, MA Member No.: 22,805 Region Association: North East States  |
Morning All,
I've searched but haven't located the info on venturi sizes for Weber 40s. I have a 1.7 with a big bore and CB carb cam. The Weber I have came with a bag of venturis so I'm trying to determine the right size. Thanks in advance! |
   |
 
|
  |
Replies
| Boothy |
Jun 21 2022, 02:07 PM
Post
#2
|
|
Member Group: Members Posts: 91 Joined: 17-January 19 From: Abington, MA Member No.: 22,805 Region Association: North East States |
Right on velocity. Bernoulli's principle. An increase in velocity results in a decrease in pressure.
When I was 19 in aircraft school the men's room had a sign "For those of you with short stacks and low manifold pressure, taxi up close." |
|
|
|
Posts in this topic
Boothy Venturi on Weber 40s? Jun 21 2022, 07:10 AM
jaredmcginness Somewhere in the neighborhood of 28-32mm vents wou... Jun 21 2022, 08:12 AM dr914@autoatlanta.com Richard Parr at PMO is the authority. Nice guy, c... Jun 21 2022, 08:14 AM Shivers When I was running a 1911, I had 28's in my 40... Jun 21 2022, 08:18 AM GregAmy Halfway down.
http://www.914world.com/bbs2/index.... Jun 21 2022, 08:32 AM Al Meredith I have the Weber manual and it has graphs that giv... Jun 21 2022, 08:43 AM sportlicherFahrer Another helpful post I used for figuring sizes for... Jun 21 2022, 08:49 AM Eric_Shea My spreadsheet coincides with @GregAmy's graph... Jun 21 2022, 08:59 AM nathanxnathan 1.7 with a big bore isn't a 1.7 anymore — I ... Jun 21 2022, 10:57 AM nditiz1 28's will be fine. I have run them up to a 20... Jun 21 2022, 11:05 AM
930cabman
28's will be fine. I have run them up to a 2... Jun 21 2022, 11:33 AM SirAndy I've searched but haven't located the info... Jun 21 2022, 01:00 PM Boothy As always, you guys are the greatest!
Thanks ... Jun 21 2022, 02:03 PM r_towle 28 Jun 21 2022, 06:49 PM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 10th June 2024 - 11:34 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.