 Finally chased the gremlins out of the carbs..., And learned a whole lot as well! |
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| johnnie5 |
 Feb 13 2009, 09:43 PM
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#1
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914 lover  Group: Members Posts: 375 Joined: 14-October 08 From: San Diego, CA Member No.: 9,644 Region Association: Southern California  |
I have been fighting my dual 40 Webers, partially due to learning as I go (carbs have always been a weak spot for me). So when I transferred them from my 1.8 to the 2056, I did not do everything I should have when they were off. I DID change the venturies, main, idle, emulsion, and air to Mr Raby's recommended spec. I did NOT, however, check/adjust the float measurement (Jake had included #'s for this as well) or the needle/seat for wear. So, some of my troubleshooting is actually stuff that should have been done initially. I have taken apart the carbs on two seperate occasions to do things that should have all been done before the carbs were even put on the new motor. (IMG:style_emoticons/default/smoke.gif)
1st time apart, check float measurement....WAY off. Too far in, and too far down. Adjust to correct spec. Also examine needle/seat and find groove on both needle's. REPLACE. 2nd time apart, chasing gremlins out of idle circuit. Take out all 4 idle jets, air mixture screws, and carb tops off. Spray carb cleaner down into top of circuit and let soak, then blow out with air. Replace flat o rings on mixture screws. BTW, Jakes jetting recommendation for dual 40's on his/Marks 2056 was: 32MM venturi 55 idle (50 actually worked better for me) 130 main (135 w Cali crappy gas - I stayed w 130) 200 air (180 or 190 at sea level - I went with 180) F 11 emulsion Float - 10MM in and 23 on the drop. Thanks to a few of my friends holding my hand and walking me through the storm... and also to Mr McMark for a really solid carb 'lesson' he was kind enough to give me over the phone a few weeks ago ~ I am proud to say... THE GREMLINS ARE GONE!!! (IMG:style_emoticons/default/aktion035.gif) (IMG:style_emoticons/default/cheer.gif) (IMG:style_emoticons/default/smilie_pokal.gif) (IMG:style_emoticons/default/piratenanner.gif) (IMG:style_emoticons/default/driving.gif) Hopefully for at least the weekend! |
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| ssstikircr |
Feb 13 2009, 10:56 PM
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#2
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Member Group: Members Posts: 200 Joined: 11-January 09 From: Fair Oaks, Ca Member No.: 9,920 Region Association: Northern California |
Good deal.... now its time to enjoy your hard work! (IMG:style_emoticons/default/driving.gif)
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| McMark |
Feb 13 2009, 11:20 PM
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#3
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Glad to hear it! Drive the hell out of it. (IMG:style_emoticons/default/happy11.gif)
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| Gint |
Feb 14 2009, 10:25 AM
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#4
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Mike Ginter Group: Admin Posts: 16,071 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains  |
Grats! (IMG:style_emoticons/default/smilie_pokal.gif) Getting carbs right (or even close (IMG:style_emoticons/default/laugh.gif)) after dickin around for weeks is one of the most satisfying 914 experiences.
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| johnnie5 |
Feb 14 2009, 03:56 PM
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#5
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914 lover Group: Members Posts: 375 Joined: 14-October 08 From: San Diego, CA Member No.: 9,644 Region Association: Southern California |
QUOTE(Gint @ Feb 14 2009, 08:25 AM)  Grats! (IMG:style_emoticons/default/smilie_pokal.gif) Getting carbs right (or even close (IMG:style_emoticons/default/laugh.gif)) after dickin around for weeks is one of the most satisfying 914 experiences. AMEN Mike! I went for a drive today and it was just fantastic! Car/motor is just running near perfect! I am a happy camper, I love these damn cars! (IMG:style_emoticons/default/biggrin.gif) |
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| ConeDodger |
Feb 14 2009, 10:45 PM
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#6
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Apex killer! Group: Members Posts: 23,587 Joined: 31-December 04 From: Tahoe Area Member No.: 3,380 Region Association: Northern California 
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QUOTE(johnnie5 @ Feb 13 2009, 07:43 PM) I have been fighting my dual 40 Webers, partially due to learning as I go (carbs have always been a weak spot for me). So when I transferred them from my 1.8 to the 2056, I did not do everything I should have when they were off. I DID change the venturies, main, idle, emulsion, and air to Mr Raby's recommended spec. I did NOT, however, check/adjust the float measurement (Jake had included #'s for this as well) or the needle/seat for wear. So, some of my troubleshooting is actually stuff that should have been done initially. I have taken apart the carbs on two seperate occasions to do things that should have all been done before the carbs were even put on the new motor. (IMG:style_emoticons/default/smoke.gif) 1st time apart, check float measurement....WAY off. Too far in, and too far down. Adjust to correct spec. Also examine needle/seat and find groove on both needle's. REPLACE. 2nd time apart, chasing gremlins out of idle circuit. Take out all 4 idle jets, air mixture screws, and carb tops off. Spray carb cleaner down into top of circuit and let soak, then blow out with air. Replace flat o rings on mixture screws. BTW, Jakes jetting recommendation for dual 40's on his/Marks 2056 was: 32MM venturi 55 idle (50 actually worked better for me) 130 main (135 w Cali crappy gas - I stayed w 130) 200 air (180 or 190 at sea level - I went with 180) F 11 emulsion Float - 10MM in and 23 on the drop. Thanks to a few of my friends holding my hand and walking me through the storm... and also to Mr McMark for a really solid carb 'lesson' he was kind enough to give me over the phone a few weeks ago ~ I am proud to say... THE GREMLINS ARE GONE!!! (IMG:style_emoticons/default/aktion035.gif) (IMG:style_emoticons/default/cheer.gif) (IMG:style_emoticons/default/smilie_pokal.gif) (IMG:style_emoticons/default/piratenanner.gif) (IMG:style_emoticons/default/driving.gif) Hopefully for at least the weekend! Johnnie, Very cool! But be sure people don't think this is a general recommendation. Jake is talking about your engine at your altitude and climate. His recommendation for that same engine in Atlanta would probably be different. We don't want people to get the wrong idea... |
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