Author Topic: Carburetor Float Leak  (Read 1083 times)

Offline frank37

  • Posts: 29
  • Name: FPezzimenti
Carburetor Float Leak
« on: January 17, 2018, 05:54:44 PM »
Does anyone know of a way to seal a Carb float on a 1930s Cad. Carb. that has developed a pinhole leak?? Will something like JB weld work? or some type of epoxy?  Thanks   Frank Pezzimenti

Offline The Tassie Devil(le)

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  • Posts: 12413
  • CLC Number: 18992
  • Name: Bruce Reynolds
Re: Carburetor Float Leak
« Reply #1 on: January 17, 2018, 06:22:19 PM »
If it is a brass float, simply solder it.

Bruce. >:D
'72 Eldorado Convertible (LHD)
'70 Ranchero Squire (RHD)
'74 Chris Craft Gull Wing (SH)
'02 VX Series II Holden Commodore SS Sedan
(Past President Modified Chapter)

Past Cars of significance - to me
1935 Ford 3 Window Coupe
1936 Ford 5 Window Coupe
1937 Chevrolet Sports Coupe
1955 Chevrolet Convertible
1959 Ford Fairlane Ranch Wagon
1960 Cadillac CDV
1972 Cadillac Eldorado Coupe

Re: Carburetor Float Leak
« Reply #2 on: January 17, 2018, 06:50:04 PM »
Bruce, Bruce, Bruce,

One needs to make sure the gas is out of the float before soldering or one might have a nice squirt of flame out of the float, or worse.

But I agree soldering is the best solution.

The Johnny
John Washburn
CLC #1067
1937 LaSalle Coupe
1938 6519F Series Imperial Sedan
1949 62 Series 4 Door
1949 60 Special Fleetwood
1953 Coupe DeVille
1956 Coupe DeVille
1992 Eldorado Touring Coupe America Cup Series

Offline Dave Shepherd

  • Posts: 2426
Re: Carburetor Float Leak
« Reply #3 on: January 17, 2018, 07:26:39 PM »
What about the added weight of soldering this can cause the float to sink some in the fuel bowl. Fuel resistant epoxy may be a better choice. Yes getting the fuel out of the float is problematic also.

Re: Carburetor Float Leak
« Reply #4 on: January 17, 2018, 07:28:24 PM »
Yeah Bruce, and before you do that make sure the motor is off.
Cadillac Kid-Greg Surfas
Director Modified Chapter CLC
CLC #15364
66 Coupe deVille (now gone to the UK)
72 Eldo Cpe  (now cruising the sands in Quatar)
73 Coupe deVille
75 Coupe deElegance
76 Coupe deVille
79 Coupe de ville with "Paris" (pick up) option and 472 motor
514 inch motor now in '73-

Re: Carburetor Float Leak
« Reply #5 on: January 17, 2018, 07:46:43 PM »
Folks,

Soldering is the best way to go. A look at the float and one will notice solder at the joints. A little more added will not sink or degrade the ability of the float.

Dave not sure getting the gas out of the float is problematic. If one does not get it out the gas fumes are what can kill you when add too much heat or a spark.

My opinion the Johnny

and yes I was poking fun at Bruce.
John Washburn
CLC #1067
1937 LaSalle Coupe
1938 6519F Series Imperial Sedan
1949 62 Series 4 Door
1949 60 Special Fleetwood
1953 Coupe DeVille
1956 Coupe DeVille
1992 Eldorado Touring Coupe America Cup Series

Offline Bobby B

  • Posts: 2732
  • Mendham, New Jersey
  • Name: Bob Bender
Re: Carburetor Float Leak
« Reply #6 on: January 17, 2018, 08:43:56 PM »
What about the added weight of soldering this can cause the float to sink some in the fuel bowl. Fuel resistant epoxy may be a better choice. Yes getting the fuel out of the float is problematic also.

Easily done by drilling a hole where the problem is, and letting the fuel drain out. You're going to solder the hole right back up anyway. Wash the float with dishwashing liquid (like Dawn), and let it dry completely before soldering. Done........
                                Bobby
1947 Cadillac Series 62 Convertible Coupe
1968 Mustang Convertible
1973 Mustang Convertible
1969 Jaguar E-Type Roadster
1971 Datsun 240Z
1979 H-D FLH

Offline fishnjim

  • Posts: 2431
  • Name: J. Bozin
Re: Carburetor Float Leak
« Reply #7 on: January 17, 2018, 09:12:22 PM »
I'd look for a replacement first.   Even if you have to scavenge a good/new float off something else that's close.   You adjust the arm to the right level anyway.
If you try repair and it warps, doesn't seal or float after - excess solder can wick inside, you've ruined it and will need one anyway.  It's difficult to solder a hole without a plug.   A lap joint is what you see.   It won't take much solder (~8 g/ml) to cancel a lot of gas (~0.8 g/ml) volume, Archimedes.  There's "anti solder" that wicks away excess to minimize (electronics or electrical supply).   If it's that badly rotted, it's not likely to last either.   The loss of zinc content is the culprit.
If they sit with gas/dirt in the bowl, moisture gets in and they corrode.   Best to drain bowl or run gas out, if sitting.   A lot of motors in that day had a fuel shutoff cock or needle valve on the fuel bowl to do just that.
There might be someone who repairs them with new metal but I've not come across any. 
Another one of those repair parts that you used to be able to get at local parts store that's gone by the way.   
You might try the carb places, but prewar NOS is getting mighty scarce.   A pre-war restorer might have leads.    A rebuild kit may come with a float.   I don't do prewar, so it's off my radar.   I can get my era.

Offline Dave Shepherd

  • Posts: 2426
Re: Carburetor Float Leak
« Reply #8 on: January 17, 2018, 09:16:49 PM »
All good info by everybody, but I can tell after many years of carb rebuilds in my shop, any additional weight added to that float is going to affect it's buoyancy may not be much but will affect float level setting.I was posting this just as you were, sorry if any  overlap.
« Last Edit: January 17, 2018, 09:19:22 PM by Dave Shepherd »

Offline 49 Convertible

  • Posts: 91
  • CLC Number: 19416
  • Name: Herman Desser
Re: Carburetor Float Leak
« Reply #9 on: January 17, 2018, 10:33:30 PM »
If it is only a pinhole, heat the float with a hairdryer on your work bench, and then a drop of krazy glue will do the trick, but let it sit for about 2 or 3 hours after glue
Herman Desser
clc # 19416

Offline Dave Shepherd

  • Posts: 2426
Re: Carburetor Float Leak
« Reply #10 on: January 17, 2018, 10:38:52 PM »
Hmm, worth a try, wonder if ethanol would affect it, next time I'm going to try thst, let the float sit in fuel over nite to see what happens!

Offline Bobby B

  • Posts: 2732
  • Mendham, New Jersey
  • Name: Bob Bender
Re: Carburetor Float Leak
« Reply #11 on: January 18, 2018, 12:39:56 AM »
If it is only a pinhole, heat the float with a hairdryer on your work bench, and then a drop of krazy glue will do the trick, but let it sit for about 2 or 3 hours after glue

Krazy glue was actually developed for Dental use until it was discovered that it gets broken down by saliva. Is Saliva more acidic or potent that Ethanol?  ???
                                                                                          Bobby
1947 Cadillac Series 62 Convertible Coupe
1968 Mustang Convertible
1973 Mustang Convertible
1969 Jaguar E-Type Roadster
1971 Datsun 240Z
1979 H-D FLH

Offline Steve Passmore

  • Posts: 5768
  • Name: Steve Passmore - Sadly Deceased
Re: Carburetor Float Leak
« Reply #12 on: January 18, 2018, 04:21:51 AM »
I can attest that this will not work after trying every alternative for more than 30 years. If you have one pinhole corroded and attempt to enlarge it you will find more pinholes. Dave Sheppard is right on. Whatever you use to fill the hole will by its very nature spill inside. The weight of that as tiny as it might be will alter the setting completely. I have tried everything over the years and everything adds weight.  Stromberg's and Carters are prone to it so I started buying NOS whenever I came across them then they started reproducing them.
If Franks name (frank37)  means he has a 37 Cadillac these are easily available saving all this messing about. .

https://www.ebay.com/itm/1937-55-STROMBERG-2-BARREL-MODEL-AA-BRASS-CARBURETOR-FLOAT-ALL-MODELS-NEW/252153466960?hash=item3ab5849050:g:Qq4AAOSwo0JWOOzs&vxp=mtr
Steve

Present
1937 60 convertible coupe
1941 62 convertible coupe
1941 62 coupe

Previous
1936 70 Sport coupe
1937 85 series V12 sedan
1938 60 coupe
1938 50 coupe
1939 60S
1940 62 coupe
1941 62 convertible coupe x2
1941 61 coupe
1941 61 sedan x2
1941 62 sedan x2
1947 62 sedan
1959 62 coupe

Offline frank37

  • Posts: 29
  • Name: FPezzimenti
Re: Carburetor Float Leak
« Reply #13 on: January 18, 2018, 07:45:48 AM »
Problem Solved---Thanks Steve  I took your advice/link to order a newly made float off Ebay. After all, if there's one hole, who knows where the next one will occur and I really don't want to do this job all over again. Thanks to all for all the wisdom and advice  Frank Pezzimenti

Offline David King (kz78hy)

  • Posts: 1647
  • Check out the Eldorado Brougham Chapter
  • CLC Number: 22014
  • Name: David King
Re: Carburetor Float Leak
« Reply #14 on: January 18, 2018, 10:07:40 AM »
Call or email Daytona Parts. they probably have a new float for you.

https://daytonaparts.com/carburetor-kits-and-parts.html

David
David King
CLC 22014  (life)
1958 Eldorado Brougham 615
1959 Eldorado Brougham 56- sold
1960 Eldorado Brougham 83- sold
1998 Deville d'Elegance
1955 Eldorado #277
1964 Studebaker Commander
2012 Volt
CLCMRC benefactor 197

Director and Founder, Eldorado Brougham Chapter
Past President, Motor City Region

Rare Parts brand suspension parts Retailer via Keep'em Running Automotive

Offline Steve Passmore

  • Posts: 5768
  • Name: Steve Passmore - Sadly Deceased
Re: Carburetor Float Leak
« Reply #15 on: January 18, 2018, 11:25:20 AM »
He's already ordered one David. They are all over eBay.
Steve

Present
1937 60 convertible coupe
1941 62 convertible coupe
1941 62 coupe

Previous
1936 70 Sport coupe
1937 85 series V12 sedan
1938 60 coupe
1938 50 coupe
1939 60S
1940 62 coupe
1941 62 convertible coupe x2
1941 61 coupe
1941 61 sedan x2
1941 62 sedan x2
1947 62 sedan
1959 62 coupe

Offline Bobby B

  • Posts: 2732
  • Mendham, New Jersey
  • Name: Bob Bender
Re: Carburetor Float Leak
« Reply #16 on: January 18, 2018, 06:18:52 PM »
He's already ordered one David. They are all over eBay.

Steve,
 Good Call  ;)......For $50.00 I wouldn't have even bothered with it either. I thought they were unobtanium....
                                                                                                                               Bobby
1947 Cadillac Series 62 Convertible Coupe
1968 Mustang Convertible
1973 Mustang Convertible
1969 Jaguar E-Type Roadster
1971 Datsun 240Z
1979 H-D FLH

Offline The Tassie Devil(le)

  • Administrator
  • Posts: 12413
  • CLC Number: 18992
  • Name: Bruce Reynolds
Re: Carburetor Float Leak
« Reply #17 on: January 18, 2018, 06:32:23 PM »
Wish it was that simple.

Down here we HAVE to repair stuff, and simply soldering a brass float isn't that difficult.

I had to repair the one in my boat engine, but replaced the tank one with a cork one, as the float was caked full of crap.

The same will work for Cadillac, and this one is the "Cadillac" of boats.

Bruce.  >:D
'72 Eldorado Convertible (LHD)
'70 Ranchero Squire (RHD)
'74 Chris Craft Gull Wing (SH)
'02 VX Series II Holden Commodore SS Sedan
(Past President Modified Chapter)

Past Cars of significance - to me
1935 Ford 3 Window Coupe
1936 Ford 5 Window Coupe
1937 Chevrolet Sports Coupe
1955 Chevrolet Convertible
1959 Ford Fairlane Ranch Wagon
1960 Cadillac CDV
1972 Cadillac Eldorado Coupe

Offline Roger Zimmermann

  • Posts: 4555
  • Switzerland
  • CLC Number: 21015
  • Name: Roger Zimmermann
Re: Carburetor Float Leak
« Reply #18 on: January 19, 2018, 02:51:10 AM »
Bruce, we in Europe are more or less in the same "boat" than you! We cannot go to places like NAPA or whatever the people in the US can go and buy parts at a fair price. Therefore we have to be more creative!
1956 Sedan de Ville (sold)
1956 Eldorado Biarritz
1957 Eldorado Brougham (sold)
1972 Coupe de Ville
2011 DTS
CLCMRC benefactor #101

Offline Steve Passmore

  • Posts: 5768
  • Name: Steve Passmore - Sadly Deceased
Re: Carburetor Float Leak
« Reply #19 on: January 19, 2018, 04:06:53 AM »
Wish it was that simple.

Down here we HAVE to repair stuff, and simply soldering a brass float isn't that difficult.

Bruce.  >:D

No not difficult Bruce, but it is more so with a twin-float type. It puts the whole balance out between the two and there is no room in the early carb for any counterbalance measures like bending the arm.  Like you, nothing is available here but if they can be bought easily as these can and posted, why bother with the hassle?

Steve

Present
1937 60 convertible coupe
1941 62 convertible coupe
1941 62 coupe

Previous
1936 70 Sport coupe
1937 85 series V12 sedan
1938 60 coupe
1938 50 coupe
1939 60S
1940 62 coupe
1941 62 convertible coupe x2
1941 61 coupe
1941 61 sedan x2
1941 62 sedan x2
1947 62 sedan
1959 62 coupe

 

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