Thanks, guys. Would this be the fault of the machine shop? Or just a random failure? These were fine 80 miles ago. The valve tip collapsing into the spring makes a lot of sense as to why I suddenly had to lengthen my pushrod.
If you have the tappet cover removed, you can look around inside the tappet galley to see if any lash cap is down in there. That's as far as it could drop, if it stayed in one piece.
Chas is correct on the caps last time I used a little heat and they came right off. ERC
Your eyes must be better than mine.In the two pictures of the intake valve I think I clearly see the two split collars and the end of the valve stem?I picture (in my mind) the stem cap as being a cylindrical disk that fits nicely into the pocket in the upper part of the valve spring retainer.It should have a nicely ground finish on both faces. IMO, if it were in place I wouldn't be able to see the end of the valve stem or the split collars but what do I know?
I cleaned everything in the head and lapped the valves. When I brought it in for assembly they said the seats were too wide, so I asked them to fix that.
One thing to know about taking anything for your Bullet to some machine shop is that nobody knows about Bullets, and you have to tell them specifically what to do, and double check everything after they do it.
I am in the tenn / north alabama area...So tell me more...who are the good bullet mechanics in this region ?...
Finally I got my head back from the machinist, with the new black diamond valves installed. I was going to smear some clay on top of the piston to be sure the valves weren't going to hit, but I dug out my box of sculpting clay and found it had dried out completely. So I shined a bore light down the compressor hole while looking down the spark hole and rotating the engine. Maybe not the best test, but it looked like there was plenty of space in there when at TDC. There should be anyway, with the 2mm spacer at the bottom of the barrel.Fired it up and wow... I was really impressed with how quiet the engine is now! Did my plug chops and put in some richer jets. Hope all is well from now on!