> I am not sure how many "spare" 3, 4 and 4a heads are
> available but I am
> guessing there are some. I see them on Ebay all the time in various
> conditions.
But very few of them say "magnafluxed for cracks".
Someone on this list, maybe Rob Blubaugh (who is no longer here), reported
going through a whole stack of heads being sold at auction, and finding that
most of them were cracked.
> But Moss does sell both cast iron and aluminum replacements
> heads. Not sure of
> the quality but there is a source for heads for now.
For a price, of course. Buying a $3000 head for a $10,000 car may seem a
bit extreme to some.
It might be worth commenting, though, that a crack does not necessarily make
a head unusable. Many of them crack in the area between #2 and #3 liners
where it makes no difference at all.
> Just in case, I managed to get my hands on 4 spares through
> the years.
I've likewise got a modest stash.
> Last year I had the head on the TR4 project cleaned, shaved
> (just a little)
> and had new guides + hardened exhaust seats installed.
Ironically enough, I never had trouble with valve seat recession ... until I
had hardened seats installed ! Still don't know why that is, but likely it
was because I switched to "racing" valve springs as well.
Randall
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