I have, in addition to "blue" both a 67 122 and a 68 144.
I don't drive the 144 because the motor died with a weird
clank clank clank noise that *wasn't* a blown timing gear.
I had been expecting it to die for a while, what with bad
dry compression and good wet compression and blowing oil
out the top of the motor from bad blowby.

Well, I finally hoisted the lump out of the car, after
sourcing a decent B18 from a 67 (I intend to sell this car
since it is either identical to or worse than my 164 in
every important way)

It turns out that the rear valve spring had simply
*broken*. It was broken in 2 places. The motor still
turns by hand, though there are some weird noises
that don't sound good, it does turn freely. I suspect
there is some other bad stuff going on inside.

The motor has never been opened up, and had only 140k
miles on it. Has anyone ever heard of a valve spring
simply breaking? Especially in 2 places? Nothing else
seemed out of the ordinary when I checked the plugs or
the oil or anything else.


Oh, and when did volvo go to the stronger head bolts?
chris