SKU: AD-BV54
Hilborn #54 Rotator Spool- Barrel Valve works in Kinsler

Barrel (Metering) Valve Rotator Spool for use with a secondary valve.  54 spool 

#54

This is the most popular of all spools for street, race,  engines, unblown on gas, E-85 , Alcohol, up to   575  cu in

......573” Dia    1.762”  long      dimensions

For huge unblown engines  , use a #56  spool 

Factory Hilborn rotator spool-
his fits all Hilborn barrel (metering) valves
 

These rotors are for the standard Hilborn metering valve. O-ring included. Choose from:
A - #57 Small motor on GAS 40-200 cu in  or methanol for 1 cyl engines   .090"
B - #54 Medium to large motor GAS or ALCOHOL  slot .186"
C - #56  or a 61  Medium to large motor,  Small percentages of NITRO. Slot width: .308"
A = .100"
B = .187"
C = .312"