Join Date: Nov 2009
Location: Lander, Wyoming
A good lap dance, err I mean Valve lap job is a good thing. Do you know what is even better for your KLR cylinder head?
Narrowing the valves seat to near Minimum Specs! It increases the psi of seating spring pressure.
I'll about bet your valves have 2+ mm of contact surface. Maybe as much as 3 mm?
Specs call for .8 - 1.2 mm. That is .032 - .048 inch.
The work hardened surfaces will retain adjustment far longer, because of less seepage from both lapping & narrowing.
Modify at "YOUR OWN RISK"!
Still riding my 1987 KL650-A1. 84,000+ miles & counting