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Webber carbs on a SBC

Discussion in 'The Hokey Ass Message Board' started by swimeasy, Nov 17, 2011.

  1. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 5,492

    Ebbsspeed
    ALLIANCE MEMBER

    Weber. I'm kind of anal about the spelling, because my name is Bob Weber.

    A lot of times when I am at an event or ordering something, They ask for my name, to which I respond "Bob Weber". Often I will get a question in return: "Is that one 'b' or two?" When I say "three" it really screws up their day.
     
  2. ibcalaveras
    Joined: May 30, 2006
    Posts: 599

    ibcalaveras
    Member

    Here a 8 IDA set up the my younger brother put together. the other is a 4 IDA on a tunnel ran intake.He works for pierce manifolds in Gilroy Ca.
     

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  3. You did make (cast?) those adapters eh metalshapes? Nice way to go after that, smart thinking. How does it run, flow? Not too many SM's around anymore to pick over.
     
  4. When is to much too much....?:eek: I don't think I could see that many cfm going through that 409??? LOL it is different... kind of like running a pipe organ for an engine.

    How many of those carbs are actually functioning? How many vacuum leaks did you have to chase before you could get it to idle?

    At least there is a common plenum for each set of 4 carbs

    About the time I would have to tune those carbs... I would've pealed them off and got the Hilbourn to run on the street... I think it would've been much easier and just as impressive!
     

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    Last edited: Nov 19, 2011
  5. metalshapes
    Joined: Nov 18, 2002
    Posts: 10,710

    metalshapes
    Tech Editor

  6. Normbc9
    Joined: Apr 20, 2011
    Posts: 1,122

    Normbc9
    Member

    I have a set of three on a side draft Chevy 292 used as a daily driver and another on a similar engine for racing. Both are trouble free dependable and as pointed out; yes, expensive. BUT... you get what you pay for. How many Chevy inline 292's are out there dusting many varieties of small block V-8's? The Weber setup is easy to mount and to work with.
    Normbc9
     

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  7. feeeser32500
    Joined: Sep 30, 2011
    Posts: 23

    feeeser32500
    Member
    from PA

    i run 4 48 idfs on a 500 caddy. the intake i made with individual runners 1 carb per cylinder its alot easieser to set up than what everyone says the car runs perfect put about 1500 miles onit since i finished it in june. ther is no problem running them on a sbc. i got mine from inglese they were $400 a piece
     
  8. GassersGarage
    Joined: Jul 1, 2007
    Posts: 4,728

    GassersGarage
    Member

    A guy I know did that to a street/strip car. When it was tuned for the street, it fell on its face at the track. When it was tuned for the strip, it would load up on the street. He ended up going back to a single 4 barrel.
     
  9. fiveohnick2932
    Joined: Mar 29, 2006
    Posts: 889

    fiveohnick2932
    Member
    from Napa, Ca.

    I love WEBERS. Easy to play with and change jetting. IDAs are the ultimate. Dont worry about having too much carb, I have two 40mm IDFs on a 108ci 4 banger and they work fine (like having a 650-750 cfm holley). Alot of manifold/carburetor theory and math doesnt work the same for IR (isolated runner) systems like they do with a regular "plenum" style system. Oh, and Weber only has 1 "b".
     
  10. Dellorto quit manufacturing carbs a few years back, and production is now solely Fuel Injection.
    I was in the high-po VW field for many years, and found that the Dellorto was a lot more tunable than the Weber, as a general rule. Theres a lot that can be done to the worn-out Italian ones now, re-bush the throttle shafts, re-configure the ramp underneath for the accelerator pump ( a very common wear area), but it isn't cheap, it's somewhat labor intensive (spelled $$$) to farm out the repairs.
    That being said, I have a set of 48 IDA's on my 2 liter VW engine, Italian ones, and a guy in Salt Lake City drilled the 3rd progression hole in for me... I can go from 19 to 90 in 3rd gear, with no pops, farts, hiccups, or anything... it just pulls like a freight train (but a little one...)

    CB still has jets and rebuild kits for the Dellorto's, but last time I talked to Rick, the owner, he didn't have any more "Dells" for sale, they were all gone...
     
  11. propwash
    Joined: Jul 25, 2005
    Posts: 3,858

    propwash
    Member
    from Las Vegas

    Here's my contribution to the Weber® collection.
     

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  12. 2OLD2FAST
    Joined: Feb 3, 2010
    Posts: 3,314

    2OLD2FAST
    Member
    from illinois

    simply beautiful!!!!!! dave
     
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  13. big duece
    Joined: Jul 28, 2008
    Posts: 6,152

    big duece
    Member
    from kansas

    Here is my set of IDF's. Building a IDA setup too...
     

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  14. Kerrynzl
    Joined: Jun 20, 2010
    Posts: 2,283

    Kerrynzl
    Member

  15. mike c
    Joined: Jan 14, 2006
    Posts: 61

    mike c
    Member

    I have a book how to build & power tune weber & dellorto by Des Hammil. It has been the best book for understanding weber's tuning. It is mostly tuning of 4 cylinders. Hope it will help someone. Mike
     
    volvobrynk likes this.
  16. racemad55
    Joined: Dec 14, 2005
    Posts: 1,149

    racemad55
    Member

    Do a search on the H.A.M.B. classifieds for "weber look a likes"
     
  17. swimeasy
    Joined: Oct 17, 2006
    Posts: 1,067

    swimeasy
    Member

    Wow! I have ordered a book and have now learned to spell "Weber". I want a setup like this!
     
    volvobrynk likes this.
  18. One thing I found when tinkering with these carbs was that I got better all around performance on the street with the smallest 37mm chokes in the IDF's and IDA's took less tinkering for street use mainly because their choke sizes can run smaller. Larger chokes are fine if for high rpm engines but I don't see many of those running the streets reliably... or for very long!

    The most important piece of information I can give anyone running Webers is to run large fuel lines and "never" exceed 3 1/4 lbs of fuel pressure... in fact if you can run 3 lbs and not starve the carbs on long full throttle blasts that would be perfect! You're looking for high Volume to the bowls not high Pressure!
     
    Last edited: Nov 19, 2011
  19. Deuces
    Joined: Nov 3, 2009
    Posts: 20,117

    Deuces
    Member
    from Michigan

    Go on ebay and type in "Weber side draft intakes" Let us know what you find!!
     
  20. powers524
    Joined: Sep 24, 2011
    Posts: 16

    powers524
    Member
    from mesa

    jiminglese.com has them
     
  21. metalshapes
    Joined: Nov 18, 2002
    Posts: 10,710

    metalshapes
    Tech Editor

    Thanks. :)
     
  22. Lotek_Racing
    Joined: Sep 6, 2006
    Posts: 690

    Lotek_Racing
    Member

    The nicest thing about Weber carbs is the fact that you can change the venturi size in the carb to match your airflow requirements.

    They offer more tuneability than any other carb I've dealt with.

    Shawn
     
    volvobrynk likes this.
  23. Deuces
    Joined: Nov 3, 2009
    Posts: 20,117

    Deuces
    Member
    from Michigan

    I have 4-bbl carb that has interchangable venturies also... It's called a "Gold Claw"...
     
  24. Lotek_Racing
    Joined: Sep 6, 2006
    Posts: 690

    Lotek_Racing
    Member

    Never heard of a "gold claw" until now.

    Googled it, looks pretty cool.

    I wonder if there will be any support for them in the near future.

    Shawn
     
  25. bonez
    Joined: Jul 16, 2007
    Posts: 3,492

    bonez
    Member
    from Slow lane

    :O
    Thats actually a 4 DCOE+4IDF, but it is still crazy.
    I'd really like to hear it, but mostly does it really need 8 of those?
    The roadster i know, i got a few pictures, that manfold w/ the 4 DCOEs is awesome.
     
  26. If you run a Inglese set up with 4 48 idf's on a sbc. What distributer would you recomend... What did you guys use, Its a tight fit...
     
  27. Louvers is correct. Webers whether IDA or IDF are great. I run both and prefer the race proven IDAs.

    Run 4 48s on a lil 327. Most critical issue is have a cam ground specifically for Webers. (Very little valve overlap) 3.5# fuel pressure. I run 100 LL Av Gas in mine and the perform flawlessly. Initial tuning is required , but pretty straight forward.
     

  28. I use a Unilite on one motor and a Joe hunt magneto on the other.
     
  29. Harell Los Angeles
    Joined: Dec 26, 2001
    Posts: 151

    Harell Los Angeles
    Member

    I have run 48's on my 327 for a few years now, I love them. The whole setup came from Inglese. The jets have the numbers ground off of them, I guess that was common in their old days, the guy didn't want you to have all the info on it. That is what I was told on the phone when I called them. I love it and would definitely run them on other projects.
     

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