Audi/Volkswagen 1.8L DOHC 20-Valve Gasoline Engine Valves
Technical information regarding valve issues in the Audi/VW 1.8L DOHC 20-valve gasoline engine.

Cummins K Series Valves
How to upgrade Cummins K series engine valves to material specific valves and seats to ensure satisfactory operational life.

LPG Cylinder Head Conversions
The recent move to clean up exhaust emissions has resulted in renewed interest in the use of LPG (Liquefied Petroleum Gas) as a motor fuel. This article discusses how this affects cylinder head rebuilders.

Ford 429/460 cid Propane Cylinder Heads
This technical article covers the importance of using the proper replacement parts for rebuilding Ford 429/460 cid propane cylinder heads.

Spiral-Reamed Valve Guides
The function of spiral-reamed valve guides is explained in this technical article.

Extending Valve Life
Understanding why valves fail can help you prevent a lot of costly mistakes from happening more than once, especially when it comes to today's hotter running, tighter tolerance engines.

Getting a Good Seat
How valve seat material, press fits and surface finishes, seat cutting techniques and accuracy requirements contribute to getting a good seat.

Warranties are Everyone's Problem
This article takes a look at who's really to blame for most warranty problems and how to effectively handle warranty-type customer complaints.

GM Big Block Engine Exhaust Valve Guide Removal and Installation
Technical information regarding the removal and installation of exhaust valve guides in GM 366 C.I., 396 C.I., 427 C.I., and 454 C.I. engines.

K-Line Bronze Bullet® Valve Guide Liner Installation
Instructional videos and print version on the installation of K-Line Bronze Bullet® valve guide liners.

K-Line® Valve Guide Liner Broaching Process And Tooling
Technical bulletin explaining the effects of using worn ball broaches in the valve guide liner installation process. In Adobe® Acrobat® PDF format (156 KB). En Español:

Guide-Liners for Diesel Applications
SBI's own Pim van den Bergh's outstanding article in the July-September 2011 issue of Engine Professional magazine regarding the use of valve guide liners as an effective and economic solution in meeting today's strict emission standards for diesel engines. (Used by permission of the AERA and Engine Professional magazine.) In Adobe® Acrobat® PDF format (3,920 KB).