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07-26-2019, 09:17 PM | #1 |
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Identifying carburetors
So, I looked through the archives but couldn’t find the answer so here comes the question. . .
How do I determine if my carburetor is a stromberg 48 or a 97? Interestingly, Mac’s (gulp)🤪 has a page or two that describe what the various ones look like... BUT !!! All of their pictures of the NEW 97s show casting details that their description page says is a 48! HELP! |
07-26-2019, 09:38 PM | #2 |
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Re: Identifying carburetors
Post a photo of the carb, front back side etc.
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07-26-2019, 09:49 PM | #3 |
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Re: Identifying carburetors
It's the two sides that count for specific identification purposes.
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07-26-2019, 10:13 PM | #4 |
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Re: Identifying carburetors
Behind the choke kicker linkage - on the passenger side - you'll see a small raised circle on the main body. 1-1/32 indicates a model 48. A model 97 reads 31/32. There are also differences in the airhorn, throttleshaft and linkage pieces.
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07-27-2019, 12:40 PM | #5 |
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Re: Identifying carburetors
Thank you, Uncle Max.
I have a 48. Darn it! |
07-27-2019, 02:03 PM | #6 |
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Re: Identifying carburetors
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07-27-2019, 05:23 PM | #7 |
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Re: Identifying carburetors
Bub,
Like Max says there are other things to eye ball.........it could be a model 40, or a Packard. If yours is a 48 or a 40 I'll swap you for a 97.....no problemo. Charlie ny [email protected] |
07-27-2019, 08:01 PM | #8 |
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Re: Identifying carburetors
Ford Barn is awesome!
I have no competent opinion about the 48. Didn’t know about it until a short time ago. Just that the 97 was some sort of thing that was a good thing. After a little thought on the matter, I assume (ass of you and me) that there is little difference between the two in performance. I have a 1947 59 a-block. Could run just about any carb built by anybody from 1934 to 1948. My reason is because I rebuilt a Holley and the “economize” drips out the float chamber in less than 24 hours. So the real question is. :why does my carb leak out its float chamber? And the ARGH |
07-27-2019, 10:10 PM | #9 |
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Re: Identifying carburetors
as uncle max stated, the throat is slightly bigger on a 48. so, some of the guys with big cubic inch motors trying to get big horsepower like the 48's. the 97 is more common, and more popular with many because it is a simple carb with a good rep for reliability. thats my thoughts on that, and i will let the real carb people tell you whats wrong with your holly
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07-28-2019, 02:37 AM | #10 |
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Re: Identifying carburetors
Your Economizer's diaphragm has either been blown out by a backfire through the carb, melted away by modern fuel, or isn't seated with it's gasket properly. Take it out, check the mating surfaces and gasket, and suck it to your tongue to verify the diaphragm.
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07-28-2019, 02:46 AM | #11 |
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Re: Identifying carburetors
Bub,
My fix for that leak is to machine the gasket face on the e'miser and use a specific nylon gasket. As stated if the diaphragm is blown all the lathe work in the world ain't gonna help. Charlie ny |
07-28-2019, 11:08 AM | #12 |
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Re: Identifying carburetors
Thanks guys.
The gasket face is in good shape and the economizer has never seen a running engine. I suspect ethanol damage. Now where do I find an economizer that has been built to handle ethanol? |
07-28-2019, 11:24 AM | #13 |
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Re: Identifying carburetors
The mating surfaces of the new Economizers don't match the old carburetors. Charlie ny has what you need.
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07-28-2019, 08:25 PM | #14 |
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Re: Identifying carburetors
I see where Charlie ny is going. However, an extra thick gasket will solve the problem of eliminating the gasket leak. I think.
Inelegant, I agree. But easy to try and NBD. Perhaps I should “Man up” and rebuild my 48! It doesn’t have an “economizer” valve. Comments on that approach are encouraged! |
07-28-2019, 10:51 PM | #15 |
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Re: Identifying carburetors
The #9 comment above could be interpreted to mean that the Stromberg 48 is a more complex carburetor than the Stromberg 97. I'm sure that is unintended as the two carburetors are identical in mechanical design with only the venturi and jet sizes different.
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07-29-2019, 09:31 AM | #16 |
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Re: Identifying carburetors
This post refers to 48 and 97 carbs. The carb on my '46 (late year build) has the number 59 cast on the body and Ford on the other side. What company built this carb? Is it comparable to the 48/97 or is it a different breed as far as parts/settings go?
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07-29-2019, 10:33 AM | #17 |
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Re: Identifying carburetors
Your carb is a Ford/Holley, which replaced the Stromberg carbs. Nothing is compatible between them. The model 59 was used on Ford products from 1945 till 1948, and but for the controls, was the same as earlier carbs starting in 1938 as Chandler Grove carbs. Your particular carb sports an earlier air horn, having an external vent as opposed to the vent tube seen inside the air horn on later carbs.
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07-29-2019, 02:26 PM | #18 |
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Re: Identifying carburetors
It's worth adding to the info above that the carb above is commonly known as a "94". The venturi diameter is 15/16" which is roughly .94 decimal.
It could have been made by Ford Holley or Chandler Grove. Holley also made a 1" bore carb called a 2100 and a 1-1/16" bore carb called a 2110. The bigger ones were fitted to some Y block powered vehicles. Mart. |
07-29-2019, 03:12 PM | #19 | |
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Re: Identifying carburetors
Quote:
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07-29-2019, 04:08 PM | #20 |
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Re: Identifying carburetors
I'm old enough to have been taught all the old units and witness the gradual but incessant metrication by stealth that is taking place. I still think in inches and my lathe and milling machine have imperial graduations.
Thanks for pointing it out. |
07-29-2019, 10:08 PM | #21 |
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Re: Identifying carburetors
mart, things could get confusing in your shop!, david g, yes, post # 9 was only intended to be a reference to the bore size, not the complexity of a 48. sorry to any who may have been misled
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08-01-2019, 09:08 PM | #22 |
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Re: Identifying carburetors
Mart, you have mentioned a serious problem for us old timers, but might not have noted why. You are UK. You are metric. We are not.
The rest of the world, all 6 billion of them, are metric. We, all 300 million or so, who have cars built to the imperial system, are not. Guess where that puts us? On the back end. When we buy parts for our old clunkers that are manufactured elsewhere, (and many, many of the local folks are metric), they try to accommodate, but standards and other stuff gets in the way and they don't fit quite right. Because they are using metric tooling to get close to inch series parts. |
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08-01-2019, 09:14 PM | #23 |
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Re: Identifying carburetors
Carbs
Stromberg 48 times 2 equals 96 plus 1 equals 97! Is there a something there? Seriously, Are they so similar that body parts from one could be combined with parts from another that you could have a cast iron lower part combined with a 40 central part combined with a 97 upper part? Because that is what I think I have. |
08-02-2019, 06:45 AM | #24 |
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Re: Identifying carburetors
Over the years it often happens that 40, 48 and 97 parts and pieces are interchanged bolted together and sold on a vendors table at a swap meet. You have to know what your looking at or deal with a highly respected seller.
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08-02-2019, 09:45 AM | #25 |
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Re: Identifying carburetors
I will never agree to go full metric! However, that being said, I can still land a 40 mike mike grenade into a 50 gallon oil drum at 400 meters on the first shot.. using a tried & true M-79 grenade launcher.. those under barrel M-16/M-203 just have too much wiggle play to be so accurate!
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08-02-2019, 03:06 PM | #26 |
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Re: Identifying carburetors
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08-04-2019, 08:22 PM | #27 |
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Re: Identifying carburetors
So
The 40, 48, and 97 share common cast parts. and can be bolted together to make competent (sort of) carburetors. We shall see . . . |
08-05-2019, 07:37 AM | #28 |
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Re: Identifying carburetors
They do not share common cast parts. There is a long list of differences in the castings, some insignificant and some important. plus there are two different 97s one marked "ELMIRA, NY" and another "SOUTH BEND" these two Carbs have additional casting differences
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08-05-2019, 11:39 PM | #29 |
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Re: Identifying carburetors
Hi; that external float vent carb is correct for engines with crank mounted fans, i understand. Old posts mentioned problems with air pressure [flow] from top mounted fan installations. A desirable carb for the correct set-up. Walked down a Concours V8 line and marveled at the '40s without that carb. Newc
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05-27-2021, 08:04 PM | #30 |
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Re: Identifying carburetors
To get back, sort of, to my original question, where do I find an economizer valve for my Ford or Holley carb that will not leak because of the ethanol in modern fuels?
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05-27-2021, 08:07 PM | #31 |
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Re: Identifying carburetors
Daytona Parts Co. daytonaparts.com/index.html
World Class Carburetor Restorations and Carburetor Kits
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