Keith Black wrist pin lubricant Options

[jmargush]

I was reading the tech sheet that came with the pistons and they mention to make sure you use a high pressure lubricant on the pin and pin bore.

Is Brad Penn break in oil ok or do I need something else?

[rick 918-S]

Engine assembly lube on pins and bearing. Oil on rings and cylinders. It's about film strength until the oiling system is purged of air. Even a primed system can take a few seconds or longer to purge trapped air. This air can cause the surfaces to collide as it passes across the surfaces and looses film strength.

Also I don't think we had this discussion here but there has been mention of ring break in. I've read posts of like 500 miles to break in the rings.... (IMG:style_emoticons/default/screwy.gif) I've read it described as rings wearing into the cylinders. If this were the case and rings could actually wear in that fast they would be worn out in 10k miles.

Here's my take on rings. If your cylinders are true and the end gaps set properly the engine needs to purge the air from the oiling system. Once oil is collected on the cylinder walls the rings become a scrapper. oil is a pressure device filling the space between the piston gap and ring. That's where the break in ends. All you need a full heat cycle and good clean oil pressure.

Let the flames begin.