The one universal law for any engine whether or not a cylinder head bolt can be ... and undermine the head bolt's ability to torque down and hold to specs. On the top end of the scale we have ...

Many modern engines use Torque-To-Yield (TTY ... such as a brake booster or master cylinder in the way, then head bolt might be necessary so the heads are easier to remove. This is also true ...

That can result in things like inaccurate torque readings ... the fact that you'll need to replace your head bolts if you separate the block and cylinder head for repairs, maintenance, or ...

However, that does not automatically translate to "bolt on better-flowing heads ... and found that when switching to larger cylinder heads, the torque lost on the low end compared to the power ...

In Tonawanda, N.Y., General Motors‘ factory temporarily installs a bolt with an embedded passive RFID tag on every cylinder head and engine block that GM uses to make its Gen 5 six- and eight-cylinder ...