Kyle Hagemann wrote:
> Hi all -
>
> Finally got around to removing the U20 head. (Takin' it slow;-)
>
> The headgasket had been seeping a bit, so I thought I'd replace
> it while the engine was out. I checked it with a straightedge,
> and holey smokes, it's flat. Or at least it seems flat within
> a thousandth, which I figure is just fine, right?
Yes. Anything less than .004" is supposedly okay.
> But I saw something goofy - the valve seats appear to have been,
> umm, "gripped" into the head, by punching the head right next to
> them. So there's these three little divots around each valve
> seat. What's the story here? Some novel way to keep the seats
> in or what? Pretty freaky stuff. Something like:
>
> .
> (O)
> ' '
Nope, that's the standard technique for retaining the valve seats.
> Incidentally, on the subject of washers, I've noted that many of
> the bolts on my engine (and elsewhere, perhaps) have TWO washers
> stacked on top of each other. PO's, huh?
Sounds like.
--
Gordon Glasgow
http://www.gordon-glasgow.org
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