Page 213 - 2020-2021 Racecar Engineering Drag Racing Parts and Accessories Catalog

2020 DRAG RACING

Valve Spring Seat Cups Valve Spring Height Micrometers
And Locators Measure valve spring installed height easily and quickly.
Comp Cams’ spring seat cups and locators can Accurate instrument fits in place of valve spring and can
withstand the ex treme spring pressures and high RPM generated by modern be expanded until the valve, spring, locks, and retainer
race engines. Hardened alloy seats protect the head and shim. They also are firmly seated.
locate and hold the spring in place. Sold in sets of 16. Part No. Description
Fits Spring Fits Spring COM4929 1.600"-2.200" Range Height Micrometer
Part No. Description Thk. ID OD OD ID 1.600"-2.200" Range Height Micrometer,
COM4690-16 Spring Locator .120" .780" 1.253" — .878" COM4930 For Beehive Springs
COM4693-16 1 Spring Locator .060" .570" 1.300" — .800"
COM4694-16 2 Spring Locator .060" .570" 1.450" — 1.000" Valve Spring Seat, Cup
COM4695-16 Spring Locator .060" .520" 1.300" — .640" Valve Guide Cutters And Arbors
COM4696-16 Spring Locator .060" .570" 1.510" — .970"
COM4700-16 Spring Seat Cup .060" .640" 1.680" 1.550" — Handy tools help engine builders machine cylinder heads
COM4702-16 Spring Seat Cup .060" .640" 1.740" 1.650" — for larger-than-stock valve springs or PTFE valve seals.
COM4704-16 Spring Seat Cup .060" .640" 1.580" 1.475" —
COM4705-16 Spring Locator .060" .570" 1.300" — .875" Arbor/pilots are available in three sizes and must be used
COM4708-16 Spring Seat Cup .060" .640" 1.780" 1.690" — with each cutting tool. Arbor/pilots will also work with
COM4770-16 Spring Locator .060" .585" 1.500" — .690" valve guide cutters used for shortening the valve guide
COM4771-16 Spring Locator .060" .570" 1.550" — .690" when installing a high-lift cam.
COM4772-16 Spring Locator .060" .570" 1.550" — .750"
COM4773-16 Spring Locator .060" .630" 1.550" — .750" Part No. Description Cuts Guide
COM4774-16 Spring Locator .060" .570" 1.625" — .765" COM4715 Valve Guide Cutter .500"
COM4776-16 Spring Locator .060" .570" 1.550" — .790" COM4718 1.440" Spring Seat Cutter .630"
COM4777-16 Spring Locator .060" .630" 1.550" — .790" COM4719 1.550" Spring Seat Cutter .630"
COM4778-16 Spring Locator .060" .570" 1.550" — .730" COM4720 1.580" Spring Cup Cutter .630"
COM4780-16 Spring Locator .060" .630" 1.550" — .730" COM4722 1.680" Spring Cup Cutter .630"
COM4781-16 Spring Locator .060" .570" 1.550" — .715" COM4724 1.740" Spring Cup Cutter .630"
COM4782-16 Spring Locator .060" .630" 1.550" — .715" COM4725 .485" Valve Guide Cutter .485"
COM4783-16 Spring Locator .060" .630" 1.550" — .690" COM4726 .530" Valve Guide Cutter .530"
COM4784-16 Spring Locator .060" .570" 1.550" — .735" COM4729 Rocker Stud Boss Cutter N/A
COM4785-16 Spring Locator .060" .570" 1.550" — .810" COM4730 5/16" Arbor/Pilot N/A
COM4786-16 Spring Locator .060" .570" 1.635" — .870" COM4732 11/32" Arbor/Pilot N/A
COM4861-16 Spring Locator/LS1 .060" .501" 1.300" — .875" COM4733 1.440" Spring Seat Cutter .560"
1: Designed for COM26981 beehive springs. COM4734 3/8" Arbor/Pilot N/A
2: Designed for COM26986 or COM26995 beehive springs.
BB Chevy Valve Seat
Valve Spring Shims Spacer Kit
Comp Cams spring shims are man u fac tured COM4779-8
from the highest quality shim stock and are heat treated to Kit is designed to eliminate rotating retainers located on
withstand the punishment from modern race engines. Shims must be used the exhaust valves of late model big block Chevys. Eliminates
to equal ize the installed height of the valve spring when setting. Sold in the stacking of over .300" of shims under the valve spring.
sets of 16. Spacers properly locate the spring in the seat and prevent it
Part No. Thickness OD ID Quantity from “walking”.
COM4736-16 .015" 1.250" .814" 16
COM4737-16 .015" 1.437" .645" 16
COM4738-16 .015" 1.480" .765" 16
COM4739-16 .015" 1.500" .645" 16
COM4740-16 .015" 1.640" .635" 16 Ground
COM4742-16 .030" 1.250" .814" 16 Valve Train Assembly Spray Shipment
Only
COM4743-16 .030" 1.437" .645" 16 COM106
COM4744-16 .030" 1.480" .765" 16 Lubricant clings to components to protect valve springs, rocker
COM4745-16 .030" 1.500" .645" 16
COM4746-16 .030" 1.640" .635" 16 arms and pushrods at initial start-up.
COM4750-16 .060" 1.480" .765" 16
COM4751-16 .060" 1.500" .645" 16
COM4752-16 .060" 1.640" .650" 16

Valve Spring Shim Variety Packs
Part No. Thickness OD Quantity
COM4753 .015", .030", .060" 1.250" 16 Each Size
COM4754 .015", .030", .060" 1.437" 16 Each Size
COM4755 .015", .030", .060" 1.480" 16 Each Size
COM4756 .015", .030", .060" 1.640" 16 Each Size
COM4757 .015", .030", .060" 1.500" 16 Each Size
Jeffrey Klimp

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