8K wow that's insane....
I am having my heads redone right now by Sheldon @ Autohead Performance
For $350 a head
This includes:
A thorough chemical cleaning, resurfacing the gasket face of the head, cutting the valve seats with the renowned 3-angle valve job, installing new valve stem seals, cutting valves to ensure optimum valve sitting, precision polishing both intake and exhaust valves (a procedure only we perform), pressure testing, vacuum testing the ports to ensure seats are sealed and double checking to ensure everything is within BMW specs.
Of course this is the price for just the head work no R&R and gaskets ect. But for those tearing down the top of the engine to the heads themselves this an excellent option.
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