Weber Jet Sizes?, Is there a "ballpark" starting point? |
|
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. |
|
Weber Jet Sizes?, Is there a "ballpark" starting point? |
Porsche Rescue |
Jul 4 2003, 01:48 PM
Post
#1
|
Saving and Enjoying Old Porsches Group: Members Posts: 2,978 Joined: 31-December 02 From: Bend, Oregon Member No.: 64 Region Association: None |
Can someone tell me the proper jet/emulsion tube sizes for Weber 40's on a near stock 2.0 (has "carb" cam but don't know specs)? So far I have only checked the idle jets and they are 45's. The engine runs OK but I think it could be better. There is a bit of a stumble at slack throttle around 3000 rpm. I think that is about the point of transition from idle circuit to main circuit. Any suggestions out there?
|
krk |
Jul 4 2003, 02:41 PM
Post
#2
|
Senior Member Group: Members Posts: 997 Joined: 27-December 02 From: San Jose Member No.: 22 |
Jim,
I have zero experience w/webers on 4 cyl's. But I've got a bunch of books -- got a /6 and had to learn somehow! But I can offer data from charts on "DCNF and IDF jetting for air cooled vw engines" courtesy of the Tomlinson book. (I have a couple of others I can look at as well) For dual carbs, they have idles at .55 down the (displacement) line for both carbs. venturi - 28mm, mains are 1.55 for 2L+, air at 2.00, E tube is F24 for DCNF and F11 for IDF. P-jet (needle valve I believe) at .50. Happy to look at more if it would help. kim. |
Lo-Fi Version | Time is now: 18th May 2024 - 02:18 AM |
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 ... |