My manual did not mention anything about retightening, neither did the lil piece of paper that came with the head gaskets, just to make sure you use proper sequence and incrased torque specs.

I think I did an okay job overall, no leaks at all, but now my dad broke his acclaim, had to spend some time fixing it, but it's back on the road.

xp

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1985 190E 2.3L - a constant project.