1. Home
  2. Carburetors
  3. Carburetor Intake, Manfold and Adaptors
  4. Universal Intake, Manifold and Adaptors
  5. EC Universal Intake Manifold for HR Tillotson Carburetors
EC Universal Intake Manifold for HR Tillotson Carburetors
EC Universal Intake Manifold for HR Carburetors
Write a Review

EC Universal Intake Manifold for HR Tillotson Carburetors

Part Number: 477INT
Online Price: $55.00
Phone Order Price:$69.99
You Save:$14.99(21%)
EC HR Universal Intake Adapter for Tillotson HR/XHR Carbs
Availability: In Stock.

Send to:

*We'll ask for shipping info at checkout

Description

EC HR Universal Intake Adapter – For Tillotson HR & EC XHR Diaphragm Carburetors


The EC HR Universal Intake is a precision-machined billet aluminum adapter designed to offer flexible, custom-fit intake solutions when using Tillotson HR or EC XHR diaphragm carburetors. Whether you’re working with custom cylinder heads, unique port spacing, or simply need to change the orientation of your diaphragm carb, this intake gives you the versatility to do it right.


Perfect for builders, tuners, and racers who require custom setups for mini bikes, karts, or other small engine racing platforms.


Key Features & Benefits:

  • Dual-Side Design for Maximum Adaptability
    The intake features two functional sides:
    • HR Flange Side: 0.310" thick with a 1.360" bore. Includes integrated pulse channel for consistent carburetor diaphragm operation.
    • Universal Side: 0.850" thick, with a 1.100" bore and no pre-drilled bolt holes, allowing custom drilling for any bolt spacing or carb orientation.
  • Custom Fitment Made Easy
    The universal flange is designed to be machined to your needs—angle it, shorten it, or drill for any configuration. Ideal for adapting HR-style diaphragm carbs to custom heads or limited space engine bays.
  • Billet Aluminum Construction
    Machined from solid billet aluminum for strength, precision, and durability. Built to withstand high-performance racing environments.
  • No External Pulse Port
    The intake does not include a pulse hole for an external fuel pump—it is designed specifically for carburetors with internal diaphragm pumping using crankcase vacuum.


Specifications:

  • Material: Billet Aluminum
  • HR Flange Side:
    • Thickness: 0.310"
    • Bore: 1.360"
    • Integrated Pulse Path: Yes
  • Universal Side:
    • Thickness: 0.850"
    • Bore: 1.100"
    • Mounting Holes: Undrilled (customizable)
  • Pulse Hole for External Pump: Not included


Compatibility:

  • Carburetors: Tillotson HR series, EC XHR series
  • Applications:
    • Custom cylinder heads
    • Reorientation of carburetor positioning
    • Mini bike and racing kart builds
    • Engines requiring flexible flange positioning

FAQ

What is the EC HR Universal Intake designed for?

This intake adapter is made for customizing carburetor fitment when using Tillotson HR or EC XHR diaphragm carburetors. It’s ideal for race engines with custom heads, unconventional layouts, or where the carb orientation needs to be altered for clearance or airflow reasons.


Does this intake adapter have a built-in pulse channel?

Yes, the HR flange side includes a pulse path to operate the internal diaphragm of HR/XHR carburetors, eliminating the need for an external pulse fitting.


What if my engine uses an external fuel pump—can I still use this intake?

This version does not include a pulse hole for external fuel pumps. It's designed for carburetors that generate vacuum internally. If your setup requires an external pulse, you’ll need to modify the intake or choose a different version.


Can I machine the universal side for my specific carb setup?

Absolutely. The 0.850" thick universal flange is designed for custom machining—whether you need to change the angle, reduce thickness, or drill a custom bolt pattern, this adapter gives you the flexibility to make it fit.


What size are the bores on both sides?

  • HR Flange Bore: 1.360"
  • Universal Side Bore: 1.100"

These dimensions allow for efficient airflow while maintaining compatibility with common HR-series carbs.


Is this intake made in the USA?

Answer:
Yes, the EC HR Universal Intake is CNC-machined in the USA from billet aluminum to ensure top-tier quality, precision, and durability.

Related Items

Recently Viewed Items