Bob Bauer 26 #1 Posted September 8, 2023 So I’m replacing the valves on a k 91 and as careful as I was I messed up the intake by taking off 2 thousands of inch more than called for. So do you think I will be alright with that or should I replace? Thanks Share this post Link to post Share on other sites
ri702bill 7,384 #2 Posted September 8, 2023 (edited) If you cut the valve seat, just a tad, it will sink the valve a bit to get your .002 and a bit more back. Cut the seat, hand lap the valve to get a decent seating pattern, Remeasure the valve clearance and re-cut the stem.....BT,DT.... Edit - Grinding the valve angled surface does the same thing..... Bill Edited September 8, 2023 by ri702bill 2 2 Share this post Link to post Share on other sites
gwest_ca-(File Mod) 10,523 #3 Posted September 9, 2023 It will not take much lapping to get that .002" back. 3 Share this post Link to post Share on other sites
ri702bill 7,384 #4 Posted September 10, 2023 12 hours ago, gwest_ca said: It will not take much lapping to get that .002" back. agreed - as long as it is by hand a a good cup or morning coffee..... Share this post Link to post Share on other sites
