COMP Cams 4999 Rod Balancer User Manual

#4999 Rod Balancer

Thank you for choosing COMP Cams® products; we are proud to be your manufacturer of choice. Please read this instruction sheet carefully before beginning installation, and also take a moment to review the included limited warranty information.

Your rod balancer will produce very accurate results—better than almost any electronic unit—but it must be correctly used. Please understand that this is a precision tool and relies on the truth of the straight edges for proper function. Always store in a manner to protect these straight edges from even the slightest damage.

To get the best accuracy from your rod balancer, follow the steps as listed.

1. Place the balancer on a ﬂat - preferably machined – surface, and level the straight edges by adjusting the leveling screw on the bottom cross bar. Use a precision spirit level to achieve the desired accuracy.

2. Mount a pair of connecting rods, side by side, on the mandrel such that the little ends are pointing horizontally away from each other while the cross hole in the mandrel is vertical. To help stabilize the rod/mandrel assembly when it is mounted on the straight edges, set the rods at a slight 5-degree downward facing angle away from their directly opposing positions. Tighten the large rod securing nut just sufficiently to hold the rods in place but not so tight their position on the mandrel cannot be adjusted.

3. Place the desensitizing pin into the cross hole of the mandrel, and position it so that it divides the angle between the rods as evenly as possible.

4. Place the mandrel with the rods mounted onto the straight edge with the rods positioned horizontally. When released, the heaviest rod will drop. To balance this pair, grind material from the heaviest rod.

5. To balance the big ends, remove the adapter sleeve and mount a pair of rods with the little ends on the mandrel and the big ends pointing away from each other. As before, make sure there is a slight downward angle on the rods and that the desensitizing pin evenly splits the angle between them. Place them on the straight edge and release as before. Grind on the appropriate rod until the assembly stays level on the straight edge.

3406 Democrat Rd.

Memphis, TN 38118

Phone: (901) 795-2400 Fax: (901) 366-1807

www.compcams.com

COMP Cams®

INSTRUCTIONS

Part #187

Revised 7/17/06

Balancing Tips: If you are simply balancing a set of rods, first go through the set and find the lightest big end and little end. Next balance all the big ends to the lightest one, and then repeat the procedure by balancing all of the little ends to the lightest. Unless only small amounts of material were removed, go back and check the balance of the big ends again. If any were out far enough to justify correcting, recheck the balance on the little ends.

Race Lighten & Balance: This balancer is ideal for helping you make the most of a rod lightening exercise. The balance pads on production rods are material deliberately added to give production balancers somewhere to remove material so all production rods will weigh the same (supposedly). This means that the balance pad material is, for a high performance engine, excess material along for a free ride. To get your rods down to a minimum weight you must ﬁrst ﬁnd the rod out of the set which has the least amount of material in the balance pads. Rework the little and big ends of this rod until they are the form you want. It should now be the lightest, so now the rest of the rods can be balanced to this one.

Limited Warranty

Competition Cams, Inc. warrants that all of its products are free from defects in material and workmanship, and against excessive wear for a period of (1) one year from the date of purchase. This

limited warranty shall cover the original purchaser.

Competition Cams, Inc.’s obligation under this warranty is limited to the repair or replacement of its product. To make a warranty claim, the part must be returned within (1) one year of purchase to

the address listed below, freight prepaid. Items covered under warranty will be returned to you freight collect.

It is the responsibility of the installer to ensure that all of the components are correct before installation. We assume no liability for any errors made in tolerances, component selection, or installation.

There is absolutely no warranty on the following:

A) Any parts used in racing applications; B) Any product that has been physically altered, improperly installed or maintained; C) Any product used in improper applications, abused, or not used in conjunction with the

proper parts.

There are no implied warranties of merchantability or fitness for a particular purpose. There are

no warranties, which extend beyond the description of the face hereof. Competition Cams, Inc. will not be responsible for incidental and consequential damages, property damage or personal injury damages to the extent permitted by law. Where required by law, implied warranties or merchantability and fitness are limited for a term of (1) one year from the date of original purchase.

This warranty gives you specific legal rights and you may also have other legal rights, which vary from state to state.