Has my engine been rebuilt???

[John A.]

Now that I've pulled both engines from the Type IV's I found (see needle in an Alaskan haystack) I'm lookin' at 'em more closely. The "cleanest" (the exterior of the case practically shines) of the two won't rotate (by hand) completely through without "hitting" something and coming to a stop. Sound bad, can't wait to pull the heads and see what kind of mess I got. Except for the EA, the rest of engine number on the case has been ground off and just above it on the vertical side of the breather chamber is a (green ink) stamp with the nomber 022.010A

Looks like this baby may have been rebuilt at some time. Oil in the crankcase is spotless. what do you think? This motor came out of a '71 411, Vin#4612059135. The heads are stamped 022.101.371D.

The other engine from the '73 412 is very dirty, but rotates through.

Thanks for your words of wisdom.
John A.

By the way, one of these two (1.7L) puppies is going to get "up'd", converted to an upright and stuffed into my '56 bug project.