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Tillotson Short Gas .062 Inlet Seat
36A-27 Tillotson Short Gas Inlet Seat
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Tillotson Short Gas .062 Inlet Seat

Part Number: 36A-27
Online Price: $6.99
Tillotson 36A-27 Short Gas .062 Inlet Seat – OEM Carburetor Fuel Seat
Availability: In Stock.

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Description

Tillotson 36A-27 Short Gas .062 Inlet Seat – OEM Fuel Seat for Gas Carburetors


Precision Fuel Control for Gasoline-Powered Tillotson Carburetors

The Tillotson 36A-27 Inlet Seat is a short-length fuel seat designed for use in gasoline-fueled Tillotson carburetors. With a .062" orifice and an overall length of 0.538", this seat is commonly referred to as a "short gas" seat. It’s the standard inlet seat for most gas applications, delivering precise fuel regulation to the high and low side circuits of the carburetor.


This seat is ideal for piston port 2-cycle and small block 4-cycle engines running on gasoline. It is not typically used in rotary valve or reed valve 2-stroke engines, or larger displacement 4-cycles where a larger fuel volume is required.


Key Specs:

  • Part Number: 36A-27
  • Orifice Size: .062"
  • Overall Length: 0.538" (short style)
  • Material: Precision-machined brass
  • Fuel Type: Gasoline (Petrol)
  • Application: Gas carburetors in small engine racing or performance use


Performance and Compatibility Notes:

Using the correct seat for your carburetor and fuel type is critical. An incorrect seat can restrict fuel flow, reduce throttle response, cause engine flooding, or even lead to internal damage.

Always verify your carburetor model and application before ordering.


Avoid Aftermarket Failures:

Aftermarket seats often suffer from poor tolerances and weak sealing. These are among the most common causes of carburetor flooding after a rebuild — especially at idle. For best results, pair this seat with a genuine Viton-tip inlet needle and verify pop-off pressure using a gauge during reassembly.

FAQ

Q1: What is the orifice size of the 36A-27 inlet seat?

A: It has a .062-inch fuel inlet orifice, designed for gasoline-fueled Tillotson carburetors.


Q2: What engines is the short gas seat suitable for?

A: It’s ideal for piston port 2-cycle and small block 4-cycle engines running on gasoline.


Q3: Can this inlet seat be used with methanol?

A: No. For methanol, use a larger seat such as the 36A-38 (.093") Short Alky seat.


Q4: What problems can bad seats cause?

A: Poorly made or mismatched seats often cause fuel flooding, especially at idle. This can affect throttle response or even cause engine damage.


Q5: What’s the best way to confirm proper installation?

A: Always use a pop-off pressure gauge after installing the seat and needle to ensure they seal properly and deliver the correct fuel pressure.

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