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carbking

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Everything posted by carbking

  1. As a general rule, the Schebler model D is the most reliable of all of the Scheblers. Try removing the bowl, and lapping the fuel valve seat with some valve lapping compound. Be sure to wash the residue thoroughly. It should work. If this is not satisfactory to you, we need to play "20 questions" to answer your request. By the way, very pretty car! Jon.
  2. Thanks Gary - I have mis-pronounced and misspelled this word my entire life! Guess you can teach an old dog new tricks! Corrections made! Jon.
  3. Question was asked in another thread about does modern fuel effect neoprene fuel valves. I started the new thread because I believe it to be an important issue, and did a tech/history article on it years ago. The article may be found here: Carburetor fuel valves We have found ethanol fuel will eventually degrade either neoprene valves or Monel steel valves. But the mean time to failure is longer with the neoprene valves than with the Monel steel valves. The removal of the "staking" step in the manufacture of the valve seats is much more destructive to the n
  4. Zeke - it is a great question, and I think I will post a new topic for it. Jon.
  5. 0.116 is huge for a 218 engine. Rochester used 0.112 on a Pontiac 400. I would have to pull a print to check the diameter of the 25-102s, but Carter used 0.086 for the Chevrolet 216. I sell enough of those to remember. Jon.
  6. Carter developed the spring-loaded fuel valve in the 1930's for use with off-road vehicles, and marine applications. It was not original to your carburetor. If the plunger is Monel steel, and you don't off-road, the neopreme-tipped valve with the correct orifice seat would be way to go. Jon.
  7. Piedmont used a Carter type L-0 (the 0 is a zero, not a oh) from 1917 through the end of production of the four cylinder, with one exception. For part of 1919, they used a Carter type F-0. I have found no explanation of why, or why they switched back to the L-0. Jon.
  8. "Should the inlet needle and seat in a Carter BB carburetor be spring loaded ? " - Maybe "The carb is a DTE2." - Not originally in this specific BBR carburetor. Carter made lots of different fuel valves (well over 1000). Since the BBR is not one of my favorite Carters, have not studied the differences in the various models as I have some of Carter's better offerings. But the specified (original) fuel valve for the DTE2 was 25-102s which was brass seat with Monel steel needle. Once neopreme needles came out, the Monel steel needle was superseded by the neopreme needl
  9. The obvious solution is to start the car everyday As to the Holley being easier to rebuild than other 4-barrels (Frank's comment)??? Familiarization makes anything easier. I personally would rather do a boat load of Carters than 1 Holley; wonder how Cliff would vote on ease of the Holley vs a Q-Jet? Jon.
  10. No comment about the pricing, I don't know. Comments about the car (RED FLAGS): Aluminum heads SCREAM premium fuel, or race fuel (read $$$$$). Headers SCREAM periodic maintenance (read $$$$$), PLUS do you really not wish to talk to whomever is sitting beside you when the engine is running? Scatter shield on a 350 SCREAMS I'm gonna race the crap out of this thing, and I want to save my legs when I over rev the engine. How hard has it been run? What type of warranty? No mention of the camshaft used. The aftermarket carb may/may not be the correc
  11. Good question: Older automatic transmissions have considerable power loss through the fluid coupling. I am told by automatic transmission specialists that this is not true for modern (last few years) automatics. The power loss requires gasoline. While there is some power loss in standard transmissions, it is much less than with older automatics. Typically, a carburetor designed to be used on an engine with an automatic transmission will be calibrated from 1/2 to 2/3 of a calibration size RICHER than a carburetor designed for the exact same engine with a standard transmi
  12. Before you subject the carburetor to the smelly stuff, remove it, turn it upside down to drain any gasoline, place it in a zip-lock back, and place it in your freezer overnight. Sometimes, the expansion/contraction rates of different metals will allow a tiny amount of movement. If you can get any movement, then try the stinky stuff. I don't know current values, but the 144/170 CID carbs used to resemble gold, thanks to the dudes restoring Rancheros and Econolines; plus many of the carbs were trashed long ago, so the supply is short. PATIENCE IS YOUR FRIEND in disassembly of that ca
  13. 4-barrel carburetor??? In 1918??? Jon
  14. Paul - I show 115 different Stromberg type U-2, and 68 different Carter type BB-1 in my database. Jon.
  15. Ben - 30 years ago, the youngsters had no clue as to the meaning of vinyl records and turntables; now once again these are quite popular. Now the younger generation knows little about carburetors. Perhaps future generations will tire of EFI, and upgrade to carburetors! It is said that history repeats itself! Jon.
  16. It is this feature that unfortunately, often get beginners to the old car hobby in trouble. For instance, someone may read that a Stromberg SF-4 is an excellent choice for a 1929~1932 Packard to be used for touring. (Opinion - IT CAN BE!). But what isn't written, or possibly written, and ignored, is the fact that Stromberg made hundreds of different type SF-4 carbs for engines from 318 CID to 1503 CID. But there were seven different venturii of different sizes which could be used in the SF-4. Too small a venturi, and the engine will run very well (but poor fuel economy) to a certai
  17. Ed - I don't know, but I would guess it had to do with proximity. (Both were located in Detroit). When Cadillac discontinued the Johnsons, they used another Detroit company (Detroit Lubricator). Communications and transportation were better than a waxes string with beer cans at both ends, and pack mules; but how much better? Why did Buick stick with Marvel for so many years (both located in Flint)? By keeping one's sources close to home, one could minimize both travel time and costs. Jon.
  18. A bit more information on "chicken/egg": In this age of instant, well generally instant, information, etc., it is important to remember time frames were not always so short. Just looking at part of the Carter prototype file this morning, and noticed some date information. The first issue of the Carter prototype 2507s AFB for the 1957 Buick was completed 21 December 1955. The same day, Carter finished the initial prototype WCFB's for dual quad 1957 Pontiacs. Assigned numbers were 2508s, 2509s, 2510s, and 2511s. There are four numbers because of ca
  19. I think maybe it was the rooster! Of all of the original carburetor documents I have acquired over the years, I was never interested in, nor attempted to acquire, correspondence. So, guessing: The carburetor companies, as new technology developed, would produce a "standard" carburetor. And while I know 31Plymouth asked about the Carter DRT-08, I am going to answer the question with much later Carter carburetors, the AFB 4-barrel. The AFB debuted in 1957. Carter produced standard carburetors in sizes of (approximate) 400, 500, and 625 CFM.
  20. I have never seen ANY documentation on the Cadillac/Johnson carburetors from Johnson. There is some documentation on repair in the Dykes Encyclopedia, as well as the Radco repair manuals. We do custom make rebuilding kits for these; however to add to Ed's comments: The most expensive component to the rebuilding of the Cadillac/Johnson carburetors is the automatic, underhood halon fire estinguishing system. Remember, these things come from the same company that thought the way to preheat fuel (other companies used water jacketed or exhaust jackete
  21. http://www.thecarburetorshop.com/Troubleshooting.htm#Fuelleak Jon
  22. If the results of checking issues Bloo mentioned doesn't help, this link might: Carter Ball & Ball issues Assuming you have the original carburetor, better carburetors were, and are, available. But the originals were cheap! Jon.
  23. I have now more than 1000 pieces of original literature on my website, with the majority being carburetor related from about 1909 to 1974. http://www.thecarburetorshop.com/Carbshop_lit.htm If there is carburetor literature you would like to see that you don't see, please let me know. What is there is the proverbial tip of the iceberg. Jon.
  24. Jack - the Rochester model B was introduced to (foisted upon ???) the world in 1950 on 6 cylinder 216 CID and 235 CID Chevrolet. There may or may not be some additional stamped numbers on the throttle body (lower casting) that might date it later. There originally would have been a triangular tag under one of the four screws holding the top casting (air horn) to the center casting (bowl). Should the tag be present, there would be a seven-digit identification number plus a date code. If the tag is gone, so is the ability to narrow it to year. Jon.
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