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ELON1974

VW Ace
Registered: 05/04/08
Posts: 108
Reply with quote  #1 
I have been having an ongoing discussion with my local VW guy about the pros and cons of dual carbs. I was wondering, what do you guys think?

I hear they're a lot of tweaking, that you may be behind your VW adjusting more than you are driving come season changes in the weather.

How many of you run duals? What kit? Problems? Benefits? Smoke any hondas recently ?

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1974 SB - Lloyd
Ryan

Registered: 04/02/04
Posts: 697
Reply with quote  #2 
Usually when people say they are always messing with their carbs it's because they are either using a cheap linkage (that's wearing out) or they just can't leave it alone.  With the exception of having to re-tighten the manifold nuts once last month I haven't touched my carbs since I finished tuning them for the new engine about 25k miles ago.  Previous engine went 40k miles between tweaks, and that was just for the sake of checking the state of tune, there wasn't actually anything wrong with them.  --Ryan
staticattic

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VW Do-It-Yourselfer
Registered: 06/16/06
Posts: 377
Reply with quote  #3 
I have dual 44 weber's on my 1776. read my posts about them. mine are FINALLY dialed in right. she breathes fire now. unbaffled stinger and she is super loud with no backfiring. best advice I can give, is learn everything you can about them. don't be afraid to touch them. I can take mine apart, label all of the parts, clean them,reassemble them, and re-install them, with my eyes closed. paying the "pros" to work on them and adjust them doesn't seem to do anything other than drain the bank account. No one is going to work on your car with the same care that you will.
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Jeff
72 Super Beetle
BugMan

VW Lover
Registered: 12/03/06
Posts: 137
Reply with quote  #4 

Quote:
Originally Posted by staticattic
No one is going to work on your car with the same care that you will.


Just thought that line needed to be highlighted.  It's the #1 reason I refuse to take any of my vehicles to a mechanic.
fatalifeaten

VW Whiz Kid
Registered: 07/05/07
Posts: 448
Reply with quote  #5 
I have dual 40mm Kadrons on my engine. They barely took any time at all to synch and the only dialing in I had to do was while I was figuring out which jetting was optimal. I haven't had to touch them since.

Note: before I installed them  I had ZERO experience with duals, and the lit right up and idled well enough to set them as soon as I put them on. I've put maybe a total of an hour into them since I installed them. Good linkage is the single biggest help you can give yourself when you're ready so step up to duals.


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'66 Deluxe
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ryen74

VW Brainiac
Registered: 09/19/07
Posts: 185
Reply with quote  #6 
I had no problems with my Kadrons either. I took them off to do the fuel injection conversion because I wanted the project. The carbs are for sale if you are still thinking of going dual. Look under the "Parts" thread in the Open forum if you want more info.

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Ryen
"Arizona dreamin'"
olspeed

VW Know-it-all
Registered: 06/23/08
Posts: 507
Reply with quote  #7 
The only reason I went back to a single carb,was the gas mileage. The best I could get with any duals was about 27 mpg. This was after jet changes and getting them dialed in. My 44 Webers did have linkage problems when they were on my Baja but like the  Kadrons that I just switched out last summer, when they were in my Ghia they worked fine. The stock solex Pict 34-3 when jetted correctly for a larger displacement engine will give you fuel mileage above the 32 mpg mark and will do it consistently. The acceleration is not blinding by any means but it is a completely drivable combination. And with fuel prices fluctuating the way they are I have a feeling I will be staying with the single carb setup.
Olspeed  

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66 Ghia, "Dexter" 76 flat window Beetle
It's not a Car it's a VolksWagon!
kafertoys

VW Ace
Registered: 06/28/08
Posts: 115
Reply with quote  #8 
running duels 12+ years , Kadrons on both my beetle and westy only problem is keeping my foot off the pedel

I seem to get better gas milage around 34mpg lol that was before transmission swap

I do not want to make the poor hondy guys feel any worse they have to feel bad enough knowing that their hondys will be ragged out and worthless in short time. 

You would be doing very well to buy Ryans kadrons, knowing that they were being run is much better then buying a set that could have been setting for awhile (bad thing)



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olspeed

VW Know-it-all
Registered: 06/23/08
Posts: 507
Reply with quote  #9 
It could be the way you drive... Or it could be the way I drive Most of the people that I have talked to told me that the high 20's was about the best I could expect out of duals. Before I retired I had two years of commute 74 miles one way, to test my carb settings. But I still could not get above 30 mpg until I put my stock carb back on.
Olspeed

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66 Ghia, "Dexter" 76 flat window Beetle
It's not a Car it's a VolksWagon!
volky00

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VW Enthusiast
Registered: 12/24/08
Posts: 23
Reply with quote  #10 
in my country(dominican republic) the gas sucks.a few companies sell it mixed with WATER in to increase volume in sales.... this is why its a bad idea in dr o have dual carbs , and the prices are above 4 dollars almost 5 dollars....and a real low octanes...this why i have a progressive webber and i have a mpg really close like the 34pict3 the 1 i had before.......
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volky00

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VW Enthusiast
Registered: 12/24/08
Posts: 23
Reply with quote  #11 
in my country(dominican republic) the gas sucks.a few companies sell it mixed with WATER in to increase volume in sales.... this is why its a bad idea in dr o have dual carbs , and the prices are above 4 dollars almost 5 dollars....and a real low octanes...this why i have a progressive webber and i have a mpg really close like the 34pict3 the 1 i had before.......
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deutchsland uver alles.
Ryan

Registered: 04/02/04
Posts: 697
Reply with quote  #12 
That statement doesn't make any sense.  Dual carbs can get the same or better mileage than a stock carb.  Putting water into fuel is equally bad for both setups.  --Ryan
tncruzin

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VW Enthusiast
Registered: 04/03/12
Posts: 1
Reply with quote  #13 
I have dual Webers on a 1776 and I have problems starting, stopping the backfiring, and running rough. Can someone tell me how to adjust the carbs? I've not been able to find anything to tell me which adjustment is which on the carb. I've thought about changing it back to a single carb. But since I bought it with the duals I would have to buy everything needed to change back.
Wayne

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VW Guru
Registered: 02/17/04
Posts: 1,678
Reply with quote  #14 
Check in the High Perfomance 101 section. Ryan has a couple of articles on carb installation and set up.
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Wayne Dean

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Leafranklins

VW Enthusiast
Registered: 05/12/12
Posts: 1
Reply with quote  #15 
yeah ive never had a problem :/
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Lea
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