1.5 or 1.6 roller rockers.

IQ52 said

Ain't that a kick in the pants? You never seen those afore? Yeah just let them slap around off the valve tip and guide themselves. The ones that showed up here actually contacted the retainer also. At least that doesn't appear to be a problem this time.

Click to expand...

Yep. Here is a picture of those rocker arms on a beehive spring. This type of setup will destroy an engine almost instantly! I'm not sure what the guy who designed those rocker arms was thinking about when he came up with that design but it was wrong. I told PRW about this design problem at least 10 years ago but evidently they never bothered to fix it.