Warpage or distortion in a material can be caused by uneven cooling, internal stresses, improper material handling, or excessive heat exposure. These factors can lead to a loss of dimensional stability and shape changes in the material.
rotted out headgasket and/or warped cylinder head . Aluminum head sensitive to no water in the engine.If it's just the headgasket it's not a big deal on a 4 cylinder datsun engine
usually there is a blown head gasket or warped head to get water in a cylinder
Usually the occasional spark plug that needs to be cleaned and gapped.
Warpage or distortion in welding is typically caused by uneven heating and cooling of the welded material. When the material cools down after the welding process, areas that cool faster may contract at a different rate than others, leading to warping. Additionally, excessive heat input, improper welding technique, or welding on materials with residual stress can also contribute to warpage or distortion.
cylinder stop drag
No spark.
What causes misfire 302, 304 and 306
They are both metals. The effect is that copper is more safer than aluminum. From Leah :)
Simply its dimensions
Sounds like a piston hitting the cylinder head. A lifter will usually tick, but a piston will sound more like this knocking noise.
This is usually a sign of excessive piston ring wear, however, there are other causes as well. You can get a more accurate diagnoses by performing a cylinder leak down test.