Reviving NOS Webers, Initial Settings? |
|
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. |
|
Reviving NOS Webers, Initial Settings? |
bbrock |
Mar 20 2019, 08:55 PM
Post
#1
|
914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains |
I didn't want to hijack the other thread but have a question about my own Webers. They are Italian 40IDFs I bought in the late 80s or early 90s. Other than finger tight bolting them on to my engine to see how cool they looked, they have never been used. No fuel has touched them. I don't remember if I even opened them to set the float levels. BUT... they were stored in a humid basement for several years before I moved to a civilized climate. So, the magnesium housing is tarnished on the outside and the plating has deteriorated on a few of the levers and such. Pretty minor stuff from what I can see.
My question: is there is anything special I should do or check other than inspecting for corroded parts and normal setup as I prep these for service? |
porschetub |
Mar 23 2019, 02:59 PM
Post
#2
|
Advanced Member Group: Members Posts: 4,697 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
28mm vents will work fine,they will offer a great response down low and into the driving range we mostly use,check on carb size formula charts and from memory the 28 is only slighty too small,still sounds like you will be really close.
Yes larger vents will work but there is a trade off @ the bottom end within the range of the low speed (idle jets) due to decreased vacuum signal. When I did my ''6'' Zeniths I first fitted 32mm vents ,engine bogged down low then felt like it was taking off @ higher rpm right up to the rev limiter,changed to 30mm vents and that really worked better,great response from idle to transition on to the mains. Over size vents cause issues when fine tuning and also with fuel economy,my engine started better on the smaller vents as noted. |
Lo-Fi Version | Time is now: 23rd April 2024 - 07:47 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |