Page 263 - VSI Master Catalog

METERING BLOCK SERVICE PARTS
MAIN JET ExTENSIONS
“STEEL” INLET NEEDLES
• An improved jet extension design that actually screws into the metering block. The main metering jet then threads into the end of the extension. The installation effectively moves the fuel entry point for the main jet out into the fuel bowl.
• “Steel-tipped” inlet needles are necessary when using exotic racing fuels or alcohol or when using benzine or acetone additives.
In this location it cannot be uncovered by fuel, causing a
HOL6-502-2 HOL6-515-2 HOL6-519-2
Seat Size
.120” .130” .150”
Type
Adjustable (2 pack) Adjustable (2 pack) Adjustable (2 pack)
lean condition, during periods of hard acceleration or braking.
• 2/Pkg.
WARNING: Requires the use of special notched” floats to achieve proper clearance and enable the float to operate normally.
HOL122-5000 (1/4" - 32 thread)
Idle Mixture Screw
HOL26-101 Accessible, Large Head Style
Idle Mixture Screw Gasket
HOL26-110-10 Replacement Cork Gasket (Pkg. 10)
Metering Block Plugs
HOL26-111-10 Main Well Plugs (Pkg. 10) .258” Diameter
METERING BLOCKS
• Model 4160 to 4150 Conversion Kits.
NOTE: Illustrated is a typical kit. Fuel bowls are not included and the metering block has no provision for a power valve. Both a “shiny finish” and a “standard finish” are available as denoted.
ADJUSTABLE NEEDLE AND SEAT HARDWARE KIT
HOL34-7 Kit Contains: 1 EA Adjusting Nut with Gasket, 1 EA Locking screw with gasket, 1 EA O-ring
POWER VALVES AND TOOLS
POWER VALVES
Single-Stage (Includes Gasket) Opening
Vacuum
1.0” Hg 2.5” Hg 3.5” Hg 4.5” Hg 5.0” Hg 5.5” Hg 6.5” Hg 7.5” Hg 8.5” Hg 9.5” Hg 10.5” Hg
Opening Vacuum
2.5” Hg 3.5” Hg 4.5” Hg 5.5” Hg 6.5” Hg 8.5” Hg 10.5” Hg
HOL34-6
HOL34-13
HOL34-13S HOL134-131
Finish
Standard Standard
Shiny
Gold Iridited
Application
0-1850 or Most Any Model 4160 with side Hung Float Bowls 0-3310 or Most Any Model 4160 with Center Hung Float Bowls 0-3310S & 0-80508S
0-3310 or Most Any Model 4160 with Center Hung Float Bowls
Standard Flow
HOL125-10 HOL125-25 HOL125-35 HOL125-45 HOL125-50 HOL125-55 HOL125-65 HOL125-75 HOL125-85 HOL125-95 HOL125-105
High Flow
HOL125-125 HOL125-135 HOL125-145 HOL125-155 HOL125-165 HOL125-185 HOL125-1005
2nd Stage Opening
5.5” Hg 5.0” Hg
NEEDLE AND SEAT ASSEMBLIES
“VITON” INLET NEEDLES
Two-Stage (Includes Gasket) 1st Stage
• Designed to be resistant to dirt and conforms nicely to the shape of the seat for superior sealing. For this reason it is not recommended to use a steel or titanium needle, except for racing. Thread diameter 3/8” - 32
Model 4160
HOL125-206 HOL125-207
Opening
12.5” Hg 10.5” Hg
Part #
HOL6-506 HOL6-508 HOL6-504 HOL6-518-2 HOL6-511 HOL6-513
Seat Size
.097” .097” .110” .120” .0785” .097”
Type
Adjustable (Single Pack) Adjustable (Single Pack) Adjustable (Single Pack) Adjustable (2 Pack) Non-Adjustable (Single Pack) Off-Road (Single Pack)
POWER VALVE PLUG AND GASKET
“TITANIUM” INLET NEEDLE
• With a .150” seat, this needle and seat assembly is about as big as you can get.
• Made of titanium! This needle design
is very responsive to changes in flow
rates and has excellent sealing capabilities.
HOL6-521 “Titanium” Inlet Needle
HOL26-36 Power Valve Plug and Gasket
SECONDARy DIAPHRAGM HOUSING AND COVER
• Replacement chrome housing and cover
for vacuum secondary carburetors.
HOL34-503
Secondary Diaphragm Housing and Cover
261