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Speedmaster PCE118.1003 2-Circuit 4 Barrel Carburetor Metering Block [Red Anodized Finish]

746-PCE118.1003


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PCE118.1003 2-Circuit 4 Barrel Carburetor Metering Block [Red Anodized Finish]
2-Circuit Carburetor Metering Block
  • For Use With 4-bbl Carburetors
  • Billet Aluminum
  • Red Anodized Finish
  • Sold Individually
  • Currently unavailable.
    This product is not available, please call customer service for options, at 1-800-345-4545.

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    PCE118.1003 - Speedmaster Billet Metering Blocks is rated 2.5 out of 5 by 2.
    Rated 2 out of 5 by from It's in the Details I bought these as 'cores' to do a custom calibration instead of using a set of old metering blocks or a pair of new aluminum castings since I didn't want to drill the emulsion holes. Unfortunately the Speedmaster parts have some design issues that would have changed my direction. 1. The emulsion well is very tall and the gasket provided will not work with a carb that has an timed vacuum port. Because of the height of the emulsion well, the hole in the gasket for the timed vacuum port overlaps with the feed from the main well to idle well. The carb would never run right with this configuration and the bowl would drain into the engine when turned off. 2. On my unit, one of the accelerator pump passages was not drilled the whole way so the pump would not function. 3. The machining of the boss for the main jet is too large and forces the fuel bowl up out of alignment and Holley fuel bowl gaskets need timed slightly to fit. 4. The provided vent whistles and gaskets are not high quality and I would not use them. Some FYIs: 5. There is no provision for a timed vacuum port on the side of the block or the dog leg channel on the main body side of the block. 6. The block comes with 6-32 jets for all the IFR, PVCR and Emulsions. They are pre-drilled to ~0.023" which is a nice feature.
    Date published: 2023-10-22
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    Do these fit 4500 dominator

    Asked by: Little
    The Speedmaster 746-PCE118.1003 metering blocks do not fit 4500 carbs.
    Answered by: jshook
    Date published: 2023-03-09

    Do these fir a 4150 style carb

    Asked by: Gabbin
    The Speedmaster 746-PCE118.1003 metering block kit will work with a 4150 carb.
    Answered by: jshook
    Date published: 2022-10-12
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