340 Static Compression Numbers and Test Procedure

Wyrmrider said

Let me bring something that was beat to death 10 years ago
To some camgrinders the lobe center is the high point of the lobe
To some it is the center of the .050 timing
which with an asymetrical lobe can be quite different
One reason some cam vendors want you to set the icl 8 degrees advanced
BVVC
I'll try and find the links
Racer Brown's article is one of them- anyone know where it went?

Click to expand...

Very true, the exact center of an asymmetrical lobe may not be at max lift.

That's why I don't run the lobe to max lift and zero the dial indicator. I zero the dial indicator on the base circle and then subtract .050 or .100 from max lobe lift (for example, if I have a .380 lobe, I'll use .350 or even .280 as a checking point on the lobe) and raise the lifter to that point (example....380 lobe minus .050 is .350) and read the degree wheel. Then I go over max lift and when I get to .350 on the closing side of the lobe, I read the degree wheel again.

The middle of those two readings is the actual ICL.