re: "...even though they had the casting bumps the NA blocks still may not have the squirters installed.... I guess I would like to hear from someone who as actually had a 1993 b230 apart...."
That's a reasonable skepticism. Can't really argue with that.
But I pose a counter-question to you (not having seen the insides of my car anyway):
With the casting bumps present, might not the tapped holes, inside, also be present? I don't know, I'm just asking.
And given that, wouldn't it be just as easy for Volvo to have provided squirters to cap those holes as it would have been to cap them with plugs? So why not go with squirters anyway?
But I confess that I'm prejudiced -- I lean toward believing (wishing?) that I do have the squirters simply because I have these two car with the engine in question, and I'd like to believe in anything that will contribute to their lasting a long time.
I wish I had the green manual, "New Car Features", for my '93 cars so I could give you a more authoritative answer (short of actually seeing the squirters with my own eyeballs) -- but I don't have that book.
I hope someone who has seen the insides does respond. Wishing good luck to us all!
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