autotech 10.109.401k ユーザーズマニュアル

Phone 949.240.4000  Fax 949.240.0450

32240-E Paseo Adelanto, San Juan Capistrano, CA 92675

 

Advancing the sprocket will increase low end (low RPM) performance, 
while retarding the sprocket will help the top end performance. This is 
also good when reinstalling a resurfaced head, because the timing will 
automatically be retarded when installing a head with the cam closer 
to  the  crankshaft.  This  sprocket  will  allow  you  to  adjust  for  the  peak 
performance and power range desired.

 
Procedure:
1.  Tighten the five flange head screws on the sprocket with a 5/16" 12-pt. socket to a  

torque value of 90 in. lbs.  Do not use locktite!

2.  Remove the upper timing belt cover to gain access to your stock sprocket.
3.  With the ignition key out of the car, and the car in neutral, take a wrench and turn the 

stock timing belt sprocket to the zero position lining up with the marks on either the 
cam cover or cylinder head as found in the instructions for finding Top Dead Center in 
your Volkswagen repair manual.

4.  With the large wrench, remove the center bolt on the sprocket and carefully slide the 

sprocket off the camshaft end without moving the timing belt.

5.  Install the adjustable cam sprocket with the TDC locating mark in the same position 

as the stock one was when you removed it. Install the bolt torquing it to factory specs 
(58ft./lbs.)  Use Loctite on this bolt!

6.  Loosen the five flange head screws in the slotted holes so that the plate can slide, then 

relocate it to the position of your choice. With a large wrench on the center bolt that 
holds the sprocket on, move the plate so the mark you are selecting is in alignment with 
the mark on the outer “Black” gear. 

 

Locating the timing mark on the black part of the sprocket from “0” clockwise or to the 
“R” side of the sprocket “retards” the camshaft in single degree increments up to 10 de-
grees. Moving in the opposite direction “advances” the camshaft timing.

 
 

CAUTION:

 Certain camshaft and engine combinations result in an "interference" engine, 

where excessive cam timing changes will result in engine damage. Be sure to rotate the 
engine over by hand to ensure valve-to-piston clearance 

BEFORE attempting to start any 

engine after adjusting cam timing.

7.  Retighten all five outer screws (90 in lbs) and test your car. It is a good idea to leave the 

upper timing belt cover off temporarily, while you test changes on the cam timing to suit 
your driving needs.

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