pearljam724
Well-Known Member
These are few questions directed to those that have maybe rebuilt or worked on more than one LA engine small block.
What is generally the largest difference you would want to see performing a dry vs. wet compression test ? I understand that it’s important that each cylinder be within 20 psi give or take. But what about dry vs. wet ?
I understand LA factory engines are pretty low compression engines. Having said that, what is a minimal psi a good condition La engine would be ? My understanding is any reading over 100 and all cylinders being within 20-25 psi of one another is important. A better question might be. What is compression psi on a freshly rebuilt La engine that hasn’t had the compression bumped up from stock ?
Lastly. Should an engine with a mildly larger cam have a little more compression than a stock cam. A slightly larger cam with stock heads, stock pistons.
What is generally the largest difference you would want to see performing a dry vs. wet compression test ? I understand that it’s important that each cylinder be within 20 psi give or take. But what about dry vs. wet ?
I understand LA factory engines are pretty low compression engines. Having said that, what is a minimal psi a good condition La engine would be ? My understanding is any reading over 100 and all cylinders being within 20-25 psi of one another is important. A better question might be. What is compression psi on a freshly rebuilt La engine that hasn’t had the compression bumped up from stock ?
Lastly. Should an engine with a mildly larger cam have a little more compression than a stock cam. A slightly larger cam with stock heads, stock pistons.