Page 347 - 2018 Racecar Engineering Drag Racing Parts and Accessories Catalog

Jet Assortment Kit HLY36-181 Power Valve Plug HLY26-36
The pro fes sion al way to track-tune a carburetor Plug blocks the power valve circuit. An
for top performance. Kit contains two each of 36 increase of 6 to 8 jet sizes is recommended to
dif fer ent jet sizes, rang ing from 64 to 99 pack- compensate for the loss of enrichment.
aged in a plas tic case to keep them separated for
easy access. Vacuum Gauge HLY26-501
A great tuning aid. Chrome-plated, 2" diameter
Alcohol Jet Kit HLY36-201 vacuum gauge reads 0-30 in. HG and includes a male
Kit includes four each of 24 jet sizes from 1/8" NPT fitting.
.132" to .200". Jets fit only Holley HP series Heat Shield HLY108-70
650, 750 and 950 CFM alcohol carburetors.
Packaged in a plastic carrying case. Aluminum shield is used to insulate the
carburetor from the intake manifold to provide
improved performance through improved air/
Main Jet Removal Tool HLY26-68 fuel density. Fits all square flange Holley carbs.
Removes Holley jets without damage. Complete with gaskets.

“Viton” Inlet Needles And Seats
Part No.
Part No.
Main Jet Extensions HLY122-5000 Adjustable Description Non-Adjustable Description
Extensions thread into the metering block. HLY6-506 0.097" Seat Size HLY6-511 0.078" Seat Size
Main metering jets thread into the extensions. HLY6-508* 0.097" Seat Size HLY6-513 0.097" Seat Size (Off-Road)
The point of fuel entry is moved into the fuel HLY6-504 0.110" Seat Size HLY6-510 0.110" Seat Size
bowl, preventing fuel starvation under hard acceleration. Use a HLY6-518-2 0.120" Seat Size
notched float for proper float clearance. * Premium design.
“Steel” Inlet Needles And Seats
Quick Change Jet Kits For High Performance Fuels
Chang e jets quickly and easily without remov- For use with alcohol, or additives (benzine or acetone).
ing the fuel bowls. Kits fit car bu re tors with cen- Part No. Description
ter hung fuel bowls. In clude fuel bowl, gaskets, HLY6-501-2 0.097" Seat Size
plugs and jet re mov al tool (tool included with HLY6-500-2 0.110" Seat Size
pri ma ry bowls only). HLY6-502-2 0.120" Seat Size
HLY6-515-2 0.130" Seat Size
Part No. Description HLY6-519-2 0.150" Seat Size
HLY34-24 Model 4500 Dominator, Prim. And Sec. Dual Inlet Fuel Bowls
HLY34-25 Model 4150/4160 Carb, Prim. Fuel Bowl With Single Fuel Inlet Titanium Needle And Seat HLY6-521
HLY34-26 Model 4150 Carb, Sec. Fuel Bowl With Single Fuel Inlet And Accel. Pump Large .150" titanium seat is among the largest
HLY26-85 Replacement Fuel Bowl Plugs, Pair available anywhere. Very responsive to changes
in flow rates, it has superior sealing qualities and is
Single-Stage Power Valves recommended for racing only.
Available in standard and high flow,
gasket included. Adjustable Needle And
Seat Hardware Kit HLY34-7
Part No. Description Part No. Description
Standard Flow High Flow Includes adjusting nut, locking screw,
gaskets and O-rings.
HLY125-25 2.5" Hg. HLY125-125 2.5" Hg.
HLY125-35 3.5" Hg. HLY125-135 3.5" Hg. Floats
HLY125-45 4.5" Hg. HLY125-145 4.5" Hg.
Replacement floats are available in nitrophyl or brass. Notched
HLY125-50 5.0" Hg. HLY125-155 5.5" Hg. floats for use with jet extensions are also available.
HLY125-55 5.5" Hg. HLY125-165 6.5" Hg.
Part No. Description
HLY125-65 6.5" Hg. HLY125-185 8.5" Hg. HLY116-1 Nitrophyl Side Hung Float, Adjustable
HLY125-75 7.5" Hg. HLY125-1005 10.5" Hg. HLY116-2 Brass Center Hung Float
HLY125-85 8.5" Hg. HLY116-3 Nitrophyl Center Hung Float
HLY116-4 Brass Side Hung Float
HLY125-95 9.5" Hg.
HLY116-10 Notched Float With Two Main Jet Extensions
HLY125-105 10.5" Hg. HLY116-11 Notched Float Without Main Jet Extensions
HLY216-43 Nitrophyl Side Hung Float, Non-Adjustable
Power Valve Check Valve Kit
HLY125-500 Float Hanger Hardware Kit
Power valve “blow- HLY20-105
out” pro tec tion can Hardware for float installation.
now be added to older Fuel Bowl Vent Baffle
model 2300, 4150 and
4160 carbs. Kit in- HLY26-89
cludes a spring, brass seat, check ball and instructions. Baffle is 1-7/16" long, and prevents fuel
from splashing out of the vent tube.
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