 Weber carb set up help, Jetting seemed to help but still slight popping/backfire |
|
|
|
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. |
|
|
| North Coast Jim |
 Oct 20 2016, 09:33 AM
Post
#1
|
|
Member  Group: Members Posts: 323 Joined: 11-December 15 From: Northern Ohio Member No.: 19,450 Region Association: MidAtlantic Region 
 |
Just finished a new 2 liter engine build with Webcam for carbs installed.
New Raby heads, Hoffman Eng, are used. New 44IDF Webers installed with cross bar linkage. Valve lash to spec and timing is spot on. Carbs are synched. Continue to hear a slight popping from only the pass side carb at partial throttle positions. Car starts and idles with plenty of power thru acceleration, but who knows I haven't driven one in over 25 years. It's a hoot to drive except for the Issue. Played with jetting to no avail. Any Carb guru's out there able to provide input to solve this dilemma. (IMG:style_emoticons/default/headbang.gif) (IMG:style_emoticons/default/confused24.gif) |
   |
 
|
  |
Replies
| Elliot Cannon |
Oct 20 2016, 10:34 AM
Post
#2
|
|
914 Guru Group: Retired Members Posts: 8,487 Joined: 29-December 06 From: Paso Robles Ca. (Central coast) Member No.: 7,407 Region Association: None 
|
This is interesting since I am having the same problem. Also popping on deceleration. I had this problem coming home from rt66. I overhauled the right carb and problem went away. After about a month, the problem reappeared. I then got off my ass and overhauled the left carb and problem still exists. After 13 years of trouble free operations (except for a few clogged idle jets easily fixed) I am faced with popping and back firing. Otherwise it seems to run great. Sorry if I highjacked this thread.
|
|
|
|
Posts in this topic
North Coast Jim Weber carb set up help Oct 20 2016, 09:33 AM
Catorse
Just finished a new 2 liter engine build with Web... Oct 20 2016, 09:43 AM
North Coast Jim
Just finished a new 2 liter engine build with We... Oct 20 2016, 10:22 AM stugray I struggled with my carbs lately and just got them... Oct 20 2016, 11:50 AM Kansas 914
I struggled with my carbs lately and just got the... Oct 20 2016, 01:45 PM Mark Henry 98% of the time it's a linkage issue, both car... Oct 20 2016, 10:46 PM stugray
98% of the time it's a linkage issue, both ca... Oct 21 2016, 02:07 AM Elliot Cannon I decided to check the idle jets one more time. E... Oct 20 2016, 01:34 PM stugray
I decided to check the idle jets one more time. ... Oct 20 2016, 02:29 PM Elliot Cannon To make sure mine opened all the way to WOT and op... Oct 20 2016, 10:52 PM Mark Henry To me, cable or not, you still have one carb openi... Oct 21 2016, 04:46 AM North Coast Jim
Just finished a new 2 liter engine build with Web... Oct 21 2016, 12:13 PM SKL1 Good info- some news tricks as I'm fighting t... Oct 21 2016, 09:39 PM Perry Kiehl Clone Here's my carb tuning procedure from a March 0... Oct 22 2016, 06:39 AM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 9th May 2024 - 04:58 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.