Step-By-Step Guide on How to Lap Valve Seats For A Perfect Fit Lapping may look simple—but doing it right takes attention to detail. Here’s a practical walkthrough of how to lap valve seats like a pro.

Note: This chapter shows the basic steps for repairing valve seats by lapping the valves. Each engine has its own specifications for valve seat angles, and you will find these specifications in your …

Available in Australia: http://bit.ly/2DLoEfv NZ: http://bit.ly/2IH37sf Valve lapping is an essential part of an engine rebuild, and must be performed even when installing new valves – to...

Lapping is a finishing step and should NOT be used to correct a bad seat, or worse yet, a valve that is improperly ground. As always, if you have any questions about Valve Lapping or any other engine …

Aug 15, 2011 · The exhaust valve runs VERY hot, and the hot valve hits the seat and transfers heat when in contact with it. If the contact patch is too big, it can cause the seat to get hot enough to …

The primary purpose of valve lapping is to achieve a good, if not perfect, seat for the valves. The process will produce finer surfaces, correct minor imperfections, produce closer fits and close or tight …

Apr 25, 2025 · Its primary function is to grind the valves against their seats, eradicating imperfections and ensuring a perfect seal. The grinding compound plays a vital role in enhancing the performance …