PRW 16 PQ Series Billet Steel Flywheel User Manual
Page 2
For tech help, contact:
PRW
Toll Free (888) 377-9779
PQ Series SFI Billet Steel Flywheel
Installation Instructions
Step 1
Begin the shimming process by using a feeler gauge to measure the flywheel to starter clearance with the current
setup. If you don’t have a set of feeler gauges, a paper clip can be used as a cheap alternative. They are normally
around 0.035” thick. Insert the measuring tool between the flywheel teeth and starter teeth. You are looking for
clearance between 0.035” and 0.065”. If clearance is too close, you will need to add shims where the starter mounts to
the block.
Step 2
If shimming the starter is necessary, be sure that the starter mounting surface is clean by removing any excessive gunk
or paint. After cleaning reinstall the starter and recheck the clearance between the starter teeth and flywheel teeth.
Step 3
After cleaning the mounting surface and rechecking the clearance, if the tooth - to - tooth clearance is still not correct,
start adding one shim at a time until proper clearance is achieved. Most aftermarket starter shims are 0.015” and
increase the tooth - to - tooth clearance to about 0.0075”. Normally using one shim will cure the alignment problem. If
more than four shims are used, there is a good chance that the mounting surface has been machined down, or it is
warped.
Please refer to your local machine shop for advice if you encounter this situation.
Step 4
After adding the shim or shims, recheck the clearance in several different locations, preferably at 120° apart.
Step 5
One more critical location to check is the clearance between the flywheel ring gear and starter. Normally this is not an
issue, but make sure there is a 0.100” clearance with a variance of +/ - 0.040”. Again check it in several locations. If
there are clearance issues the flywheel may be warped, and should be returned to your dealer.
If you need technical information, or additional information regarding the installation of this product, call us toll -
free at: (888) 377 – 9779 or Email: [email protected]
PRW Industries, Inc.
1722 Illinois Avenue
Perris, California 92571
Tele: (951) 436-7900 FAX: (951) 928-8555
Tech: (888) 377-9779
www.prw-usa.com
P:\Product\Installation Guides\New Revisions 10-1-08\PRW Billet Steel Flywheels.doc