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EFV-8 Club Forum / General Ford Discussion / Phenolic spacer between carb and manifold

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Discussion Topic: Phenolic spacer between carb and manifold -- page: 1 2

DEAN333

12-28-2012 @ 6:17 PM

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Just looking for feedback on installing a phenolic spacer between the carb and manifold to prevent new gas from boiling in the carb. I have a '36 Deluxe Touring Fordoor.

TIM CARLIG

supereal

12-28-2012 @ 8:16 PM

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The main generator of carb heat is the exhaust passages cast into the intake manifold. The intent is to aid vaporization of the fuel to aid combustion. Rather than adding insulation to the carb base, you can plug those passages. We used to use pennies for the purpose to add some tone to dual exhausts. So far,, the "new" gas hasn't presented a boiling problem, as the refiners closely control the "vapor pressure" of the fuel to lessen problems. If the current interest in increasing alcohol content proceeds, that may change. We have used carb base insulators on some modern engines, but not old ones. Fuel boiling is usually associated with "heat soak" when the engine is shut down. This causes evaporation in the carb, which can interfere with restarting. A good fuel pump usually cures that.

This message was edited by supereal on 12-28-12 @ 8:19 PM

12-28-2012 @ 11:02 PM

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There have been several good threads posted on Fordbarn regarding problems with ethanol enriched gas when used in early Ford Flathead powered V8's. G.M. (George Mitch*ll) has come up with some good ideas on how to reduce operating temperatures that normally occur at the fuel pump and carburetor. You should be able to find these threads by using the search function.

JM

12-28-2012 @ 11:04 PM

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Eliminate duplicate post.

This message was edited by JM on 12-28-12 @ 11:07 PM

TomO

12-29-2012 @ 8:12 AM

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If you are having flooding problems after your car warms up, you should check the fuel level in the carburetor. The phenolic spacer is just a band-aid.

Tom

DEAN333

12-29-2012 @ 8:59 PM

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I'm not having any problems. I got new thermostats from Robert Shewmake and he included a picture of the spacer in the box, promoting the spacer. Was looking for feedback if it was a good idea to install when I take the '41 intake off to install the correct '36 intake.

TIM CARLIG

v8teditor

12-31-2012 @ 12:59 PM

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From the next V-8 TIMES:
Always thinking of helping V-8 enthusiasts, tool and die maker Robert Shewman of Kimberton, Pennsylvania has come up with two new products to add to his popular flex fuel line for the Ford flathead.
Robert is now making a phenolic spacer to keep your carburetor cool when using ethanol based gas. Can be used with either Stromberg or Holley. A spacer kit comes with one spacer that fits between the intake manifold and the carburetor, two gaskets, and three longer studs which help with installation. Sells for $28/each ppd.

nelsb01

12-31-2012 @ 1:17 PM

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In my limited experience, the gas is already hot by the time it gets to the carburetor. The ideal place for a 'spacer' would be the fuel pump. Most vapor lock occurs from the fuel pump to the carb. Or why else would everyone recommend putting a cold rag on the fuel pump and gas line to carb when you experience vapor lock?

supereal

12-31-2012 @ 2:02 PM

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More often than not, "vapor lock" is actually caused by an overheated coil, usually an old one that hasn't been rebuilt with modern materials. The one place where alcohol laced gas is causing problems is in the gas line, itself. The original lines are 1/4", and when rust develops due to the oxygenated fuel, and deposits are loosened, fuel volume decreases in an already limited system. I have a rebuilt coil, and it flummoxed me as to why my car would buck and die now and then until I measured the fuel delivery and found it weak. A new gas line cured it for good. The copper inside coating had disappeared, and the line was so rusted that a wire couldn't be put thru. A carb spacer probably can't hurt, but the flatheads haven't needed them for eight decades.

DEAN333

12-31-2012 @ 5:53 PM

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Correction, I meant Robert Shewman.

TIM CARLIG

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