Quote:
Originally Posted by Dave2001S
I had a cracked head. Got a new head, both heads machined. Nothing done to the mid section. Pretty much everything replaced that could be. I'll be switching to 10W40 I guess, thanks.
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Now that I know you pulled the heads....
I'd 100% check timing.
If you split the case -- you could have a piston clip that didn't seat properly, and is catching on the cylinder wall.
Put a mechanical gauge and measure the oil pressure. It won't be perfect, but you can tap off the top of the heads.
You might have blocked some oil passages with sealant, it's real easy to put too much on when you are putting the valve covers back together.
check the vario-cam. Maybe air got trapped in there during sitting and its just not engaging and
you're getting some rattle in the chains/guides?
I'd check compression or do a leak down to confirm there's no bent valves, or something sticking on the valves/valves seats.
lots of possibilities -- try to narrow it down via diagnostics.
Mike