Okay, help with my motor, was: "carb dial in help? (webber IDF 44)" |
|
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. |
|
Okay, help with my motor, was: "carb dial in help? (webber IDF 44)" |
VaccaRabite |
Jul 5 2008, 12:31 PM
Post
#1
|
En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
*edit* Note, cylinder bank 3/4 is not firing. Plugs are oil fouled. All four cylinders have decent compression, considering that the rings probably are not set yet. Carbs are fresh rebuilt, I have yet to check spark.*/edit*
I have set my idle at 1K rpm. Idle adjustment screws for the 3/4 bank is almost all the way out. Idle adjustment screw for 1/2 bank several turns in. Both carbs are idling at 5 kg/h according to my flow meter. Mix screws for all 4 carbs are 2.5 turns open. When I open the throttle to ~3K rpm, the 3/4 bank only sucks slightly more air. The 1/2 bank jumps up to about 15 kg/h. So, where am I off. I have my weber tech manual too, but thought I would ask here to see if I got a faster "ah-ha" type answer (like usual). |
VaccaRabite |
Jul 5 2008, 02:35 PM
Post
#2
|
En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Engine is a 2056.
Don't know the venturi size, or jet size. I bought the 2056 engine and carbs together, and then rebuilt the engine and carbs. The engine due to poor leakdown (collapsing registers) and the carbs just because I wanted the experience. I should have made note of the venturi and jetting when I had it apart, but I did not. Looks like another rain band coming in, so I have to get the engine cart back in the garage. By the way, I am getting spark to all 4. I cleaned the oil fouling off the plugs with a wire wheel, and the bank fired again. Engine idles great as low as 500 rpm. Where should I set my engine idle? The 3/4 bank is still sucking less then the 1/2 bank. Bring up to about 3K the 3/4 bank rises to about 7.5 kg/h, while the 1/2 bank is 2x that. I'll eyeball the butterflys at 1/2 throttle, and see what I can see. Zach |
Lo-Fi Version | Time is now: 11th June 2024 - 09:50 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 ... |