Great pictures and very helpful comments. I'll be replacing the head on my '85 300D with a rebuilt one this next weekend (as discussed in previous posts). I have a couple of questions:

1. I will be pulling prechambers from the old head and installing into new head. (I have proper tools and seal rings). What should I do to clean/inspect the pre-chambers...I dont really know what to look for. I havent bought any new ones as I expect to use the old ones...but I wont put in bad ones. If one is bad, should I replace all?

2. What should I look for on pistons or in cylinder bores...I'm not planning on doing any cylinder work....the head is going on no matter what, but I should be aware of any indications of damage.

thanks

Mark

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1984 300TD Wagon, 407,800 mi (current daily driver)
1985 300DT Sedan, 330,000 mi (gone to that great autobahn in the sky)