Page 450 - 2018 Racecar Engineering Drag Racing Parts and Accessories Catalog

Throttle Return Kits Replacement Holley
Throttle Return Kits attach directly MOR64919 Carburetor Gaskets And Accessories
to carburetor and are designed to Reusable Metering Plate Gasket
clear most low-profile racing air MOR65222
cleaners. Sold complete with one Fits 4150/4160 carbs (Holley 108-29).
set of heavy and one set of light return springs
and necessary hardware. Drag Race Float Kit MOR65228
Notched to clear 3/4" long jet extensions in
Part No. Description
MOR64919 Throttle Return Kit, Satin Black, Holley 4150 Including HP Series carbs with center hung float bowls. Alcohol com-
MOR64923 Throttle Return Kit, Chrome, Holley 4500 Dominator patible. Sold individually.
Throttle Return Kit, Satin Black,
MOR64927 Reusable Float Bowl Gaskets
Holley Or Road, Speed Or Race Demon 4150/4160
MOR64929 Throttle Return Springs Only, Pair MOR65224
Carburetor Spacers Buna-N compound with anti-wicking nylon
Moroso offers open backing. Used with alcohol or gas. Fits 4150/4160 carbs (Holley
plenum and four-hole 108-32, 33). Two per kit.
carburetor spacers in Nylon Float Bowl Washer Kit
plastic, phenolic, wood, cast aluminum and billet aluminum. MOR65225
Spacers increase plenum distance for improved fuel distribution
and insulate the carburetor from the manifold. Stud installation Ten per package.
kit and gaskets must be purchased separately. Clear Sight Plugs MOR65226
Cast Billet
Plastic Phenolic Wood Aluminum Aluminum For Holley carbs, two per package.
Description Part No. Part No. Part No. Part No. Part No.
Standard Flange Spacers Hex Head Fuel Bowl Screws MOR65414
4-Hole Spacer, — MOR64943 — — — Hex head screws are 2-1/2" long and are
1/2" Tall, 1.75" Bores more easily removed from Holley carburetors.
4-Hole Spacer, MOR64930 — — — MOR64996 Packs of four.
1" Tall, 1.75" Bores
4-Hole Spacer, High Flow Squirter Screws MOR65442
2" Tall, 1.75" Bores — — — — — Fully radiused Allen heads reduce turbulence, increasing
Open Spacer, 1/2" Tall — — MOR65015 — MOR64985 air flow for improved throttle response. Screws are for gas
Open Spacer, 1" Tall MOR64940 — — MOR64980 MOR64981
Open Spacer, 2" Tall — — — MOR64970 — fed Holley carbs, sold individually.
Dominator Flange Spacers Holley Jet Extensions
Open Spacer, 1/2" Tall — MOR64947 — — —
Open Spacer, 1" Tall — — — MOR64950 MOR64951 Thread into the metering block and space the jets
back into the fuel bowl, preventing fuel starvation.
Carburetor Stud Kits CNC-machined brass extensions must be used with
“Bullet Nose” studs are rounded on MOR65228 float kit to clear extensions. Two per pack.
one end to allow easy nut installation. Part No. Description
Kits include four of each: studs, hard- MOR65440 Jet Extensions, 1/4"-32, Std. Holley Jets
ened flat washers and nuts. MOR37950 MOR37961 MOR65441 Jet Extensions, 5/16"-32, HP Holley Jets
Part No. Description
MOR37950 5/16" x 1-3/8", Fits Carbs With 1/2" Flange Base 1:1 Slip Link MOR65444
MOR37960 5/16" x 2-1/2", Fits Carbs With 1/2" Flange Base And 1/2" Or 1" Spacer Replaces the stock, progressive link,
MOR37961 5/16" x 3-1/2", Fits Carbs With 1/2" Flange Base And 1-1/2" Or 2" Spacer converting it to provide simultaneous
1:1 primary and secondary throttle opening. Fits all Holley 4150
Dominator Carburetor Adapter carburetors.
MOR65000 Carburetor Linkage Bushing Set
Use adapter to bolt a Holley Dominator carbure-
tor to any intake manifold with a standard Holley MOR64920
4150/4160 bolt pattern. Open plenum aluminum Steel bushing adapts a 1/4" fastener to the
adapter is 2" thick. 1/2" diameter hole found in the throt tle linkage arm on Holley
carbs.
Carb Caps Throttle Stop MOR65042
Keeps dust and other foreign material out of Adjustable throttle stop for Holley 4150
carburetor. Made of durable, high impact plastic.
carburetors provides a positive stop to prevent
Part No. Description side loading and worn throttle shaft bores.
MOR65802 Fits Holley, Thermoquad And Q-Jet Carbs With 5-1/8" Dia. Neck Mounts to carb hold down stud and is compatible with progres-
MOR65803 Fits Holley Dominator Carbs With 7-5/16" Dia. Neck
sive or 1:1 linkages.
Vacuum Line Cap Kit MOR41090 Carburetor Drain Cup MOR65805
Seal vacuum line connections at car- Specially-channeled drain cup catches fuel spilled
buretors, intake manifolds, etc. Includes from fuel bowl screws. Made from fuel resistant
20 vacuum caps in 1/8", 3/16", 1/4" and polyethylene.
5/16" sizes.

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