Home » Facts About Wrist Pin Keepers » Facts About Wrist Pin Keepers - Technical Tip  
Business Hours
Phone Service
Placing Orders
Shipping Policies
Returns For Credit
Warranty Policy
Privacy Notice
Contact Us
Facts About Wrist Pin Keepers » Facts About Wrist Pin Keepers - Technical Tip
Internal snap rings replace wire clips. Some who have had problems with wire clip keepers coming out have installed Teflon buttons to keep the wrist pin in the piston. Many devices have been made to trap the wrist pin in the piston. Most are not effective, cause other damage, such as wear to the cylinder, and/or break. Internal snap rings always hold the wrist pin in the piston unless one or more of these problems exist:

1. Bent rod.

2. Case line bored out of parallel to the spigot holes, which is very common with the present rebuild type of line bore equipment.

3. Crank flexing or bending in the middle, pushing the rod sideways with every up and down motion. Travelling down, it pushes the pin forward in the hole; up it pushes it the other way. This almost always happens with cast cranks, non-counterweighted cranks and even a high HP engine with a cheap forged crank. This problem was solved with the properly counterweighted and new forged Berg crankshafts over 18 years ago. No other company's crank meets this rigidity.

4. Endplay too loose allows crank to move back and forth too much. This moves rods back and forth, putting end thrust on the wrist pins. This also causes the brass distributor drive gear to wear prematurely.

Common sense should tell us that any one or a combination of the above engine problems can cause the keepers to burr up the piston or come out of the piston.

Note: If you are still not convinced and want better protection, we can machine the piston to accept double snap rings, LA PST021-4 Cut pistons for double snap ring (requires 2 sets of new GB 203 keepers). This will allow us to reduce the wrist pin endplay.

GB 203 22mm internal snap ring wrist pin keepers (set of 8)


Web design and hosting by Canvas Dreams LLC and California web design by Pearl Compass.

Please contact us about errors or questions. We value your input!

Any and all references to the company Volkswagen, or the VW name are strictly for reference only. The GENE BERG name and GENE BERG products are protected under trademark, copyright and patent law, any violations will be pursued. GENE BERG ENT. is not a part of any companies mentioned or linked to this website and any beliefs of those companies are not necessarily the beliefs of GENE BERG ENTERPRISES.

Copyright ©2022 GENE BERG ENTERPRISES all rights reserved