Shimming springs?? Help for a newbie.

[Jesse/DVK]

I would like to know more about the shimming of valve springs. Why do you need to do it and how do you do it? I should recieve my bugpack 4046 next week and I would like to know how to install them on my heads. I've searched a bit on the forum and I read something about coil bind, it's bad if the coil touch each other but to much of a gap is also not good?

Also with break-in of the engine should I remove the inner valve spring?

Thanks!

[Peter]

hey Jesse,
i dont know if its completely correct,
but for my motor, i had 2.5 mm before coil bind at full lift
you also have to check the retainer to guide clearance, and piston to valve clearance
i ran the double springs directly, but i have udo lifters... dont know for other brands of lifters
hope it helps you a bit...

[airstuff]

hey ruff,which springs did you use with your web 86c?

how much should they last?

[Peter]

original CB springs that came with the heads,
they wont last long i think, valves are floating at 7000
i will buy jpm springs in the future i think