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weber carb

Discussion in 'Flat Fender Tech' started by Griff, Jul 11, 2005.

  1. Jul 11, 2005
    Griff

    Griff Member

    Sylacauga ,Alabama
    Joined:
    Oct 11, 2004
    Messages:
    66
    I have a 60 3B with a weber carb that I have been running for about 3 years. Never any problems. For the past month I have had points and timing trouble so I decided to drop the petronix unit in it. Took to a local off-road place to have that and other stuff done. The local mechanic told me 90% of the trouble was running a weber carb. Too much fuel. I love the weber ever since i put in on. Has anyone ever heard this?
     
  2. Jul 11, 2005
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
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    23,596
    Well, I assume that you are running a 32/36 DGEV progressive-style carb. I don't know how the venturi size of thie 32/36 compares with the similar carbs that were used on Pintos and VWs (aftermarket), but they used a progressive carburetor too. That is, the primary opened first, like a 4V with vacuum secondaries. A Pinto is 2000 or 2300cc, about 120 or 138cid resp. comparable to the 134, although you'll never get the revs from a 134 that you can get from a Pinto.

    You could call somplace that sells the Weber carbs now, like Redline, and ask them if the 32mm primary is suitable for a 134cid engine. You might also do some research and see if you can find out the venturi diameter of the Weber/Holley used in the Pinto. That would give you some idea of the optimality of your current carburetor.

    My feeling is that your mechanic doesn't realize that this is a progressive carburetor. With the 134, you may never see the air flow and vacuum needed to open the secondary much, but the primary will still flow enough air to give good atomization and mixture control. The primary velocity/volume is what you need for good driveability.

    hth
     
  3. Jul 11, 2005
    Mark W.

    Mark W. Banned

    Joined:
    Jun 25, 2005
    Messages:
    71
    The weber is a mechanical progressive. I have one on my 67 Mustang a 200 cu in engine. I know two guys running them on 134L's and will on mine when it's ready for a carb. THEY work great.

    Make sure you have no more then 2.7lbs fuel pressure this is very very important with the Weber. The 32mm primary is much smaller then the Carter YF single barrel.

    It is also possible your jetting may be off. I could describe how to check for that but it will have to wait until after work.
     
  4. Jul 11, 2005
    Griff

    Griff Member

    Sylacauga ,Alabama
    Joined:
    Oct 11, 2004
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    Thanks Tim/Mark for the reply. It is the 32/36 DGV . It is the correct application for the 134 engine. like I said , never any problems but that mechanic had me worried
     
  5. Jul 11, 2005
    jd7

    jd7 Sponsor

    Nacogdoches,Texas
    Joined:
    Mar 30, 2004
    Messages:
    1,745
    Redline sells this carb with an adapter for both 134's. I always wondered how it did on these engines. Well just overall I've wondered how Webers do in off road off camber up and down situations. I have been considering one for my 252. Any wisdom to share?
     
  6. Jul 11, 2005
    Mojave

    Mojave Member

    California High...
    Joined:
    Jul 1, 2005
    Messages:
    134
    The 32/36 DGV should work well on your 258, JD7. I’ve had one for years on my 63 Landcruiser pickup with a 237 straight 6, and no complaints. I get 17 MPG, and no stumbling in rough terrain or on steep climb angles. Rebuild parts are available in most race shops.
     
  7. Jul 11, 2005
    Mojave

    Mojave Member

    California High...
    Joined:
    Jul 1, 2005
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    134
    Oops - I meant 252!
     
  8. Jul 22, 2005
    BlueFlu

    BlueFlu past owner of some ecj5's

    Hermitage, TN
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    Jan 21, 2004
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    1,552
    For what its worth, I ran a Weber progressive on an off road rail VW powered 1641cc, never any problems. Then I went to dual 40mm carbs.

    As stated the fuel pressure is the key with any Weber.
     
  9. Aug 19, 2009
    504fun

    504fun New Member

    Riverside CA
    Joined:
    Aug 18, 2009
    Messages:
    6
    Did some searching:)

    Do properly setup Webers perform as well or better than a solex or carter on steep or rough stuff?
     
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