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So its definitely some sort of pitting. Occurred on 6 lifters. 2 pretty bad. 3 a few spots of it. And 1 just 2 small places. I'll take better pictures in a bit. Pretty pissed right now.
Exhaust lifters all look 100% fine. Cam journals look great, cam lobes all look fine.
I would put stock shims back in it. My guess is there is a material problem with those buckets, and you probably caught it early enough to save the cam. I would clean off any specs of metal stuck to the lobes and polish them, then go back with stock shims.
Right? I have no idea what caused it. Especially because the exhaust side looks perfect. But we all know how this market works. It was definitely my fault.....
I'm going to order 6 more tomorrow. Maybe overnight them. Not sure.
Replacing valve seals currently. Using my leakdown tester yo pressurize the cylinder. Leakdown number on cyl 1 looks good at least.
Right? I have no idea what caused it. Especially because the exhaust side looks perfect. But we all know how this market works. It was definitely my fault.....
I'm going to order 6 more tomorrow. Maybe overnight them. Not sure.
Replacing valve seals currently. Using my leakdown tester yo pressurize the cylinder. Leakdown number on cyl 1 looks good at least.
My best guess is the lifters are too soft. For sure your fault!
I think it's a lifter problem, cause stock lifters/stock cams don't do that. Are you ordering the same brand lifters as before to replace these?
Pretty easy to check hardness. I'd grab a stock shim and have the two tested. If you've ever used a spring loaded center punch it's like that but calibrated and then you measure the "crater" diameter.
A razor blade doesn't scratch the surface. So they aren't made out of cheese. I'm still stumped on why the exhaust lifters look so perfect compared to intake.
From memory there is one firm click, and they are seated. I used a couple light taps with a hammer (I used an extension and deep set socket to push them onto the guide) to make sure they were completely seated.