SKU: AD-VB8U-54
VB8U-54 Hilborn 4port Replacement 8 Cylinder Side Mount-Barrel for 4 Port Hilborns Upright

 VB8U-54  New Alkydigger produced in USA 

 * These open opposite of some original Hilborns  Depends on if Butterflies have been Flipped  

As long as you open it toward the wide side - it doesn't matter  

https://www.alkydigger.net/category/hilborn-barrel-valve-spool-orientation.html   click link  

The 54 Spool is for low boost engines on GAS looking for the best Drive ability   or Unblown 

 - Not all out Racing    Boost 5-12 lbs  on GAS  

Comes with a 54   Spool unless otherwise specified -  

 call Braden  or Mike  615-457-3192 for advice  

Side Mount 8 cylinder Metering Valve- Fits 4 port and two port upright Hilborn injectors-

Will not fit Shotgun - or E-style front butterfly type    without some manipulation of the hoses

This valve coordinates the fuel with the butterflies, which controls the air to the engine.

It consists of an anodized aluminum block, a metering rotor, a secondary outlet, and nozzle hose outlets.

The metering rotor is selected to serve a wide range of engine sizes and fuel requirements,

 making it unnecessary to change rotor sizes when cubic inches change.

• 8 cylinder, side mount assembly (for upright Hilborn 4 port and two port units )  NOT for forward facing 3" or Shotgun 
  
• #58  rotor spool  for blown alcohol   w 10-25 lbs boost   OR  a 54  spool for Blown Gas or Ubblown on a Tunnel Ram