Manual

COMP Cams®

3406 Democrat Rd.

Memphis, TN 38118

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

www.compcams.com

Part #187

Revised 7/17/06

#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.

INSTRUCTIONS

PAGE 1
INSTRUCTIONS #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.
PAGE 2
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.